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Linux Analysis Report
main.sh4.elf

Overview

General Information

Sample name:	main.sh4.elf
Analysis ID:	1584441
MD5:	e19779488b479dd3c5a4ff184cbda783
SHA1:	9b5ba2e036e97816f36a3275b21d3393c52bbef6
SHA256:	285914eabaccc837a9732c0024ed61c3d36f90d5f61b1a910b0e020bc2ab4a94
Tags:	elfuser-abuse_ch
Infos:

Detection

Mirai

Score:	80
Range:	0 - 100
Whitelisted:	false

Signatures

Antivirus / Scanner detection for submitted sample

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for submitted file

Yara detected Mirai

Sample deletes itself

Uses dynamic DNS services

Detected TCP or UDP traffic on non-standard ports

Sample contains strings indicative of BusyBox which embeds multiple Unix commands in a single executable

Sample has stripped symbol table

Sample tries to kill a process (SIGKILL)

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

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

Yara signature match

Classification

General Information

Joe Sandbox version:	41.0.0 Charoite
Analysis ID:	1584441
Start date and time:	2025-01-05 14:57:05 +01:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 4m 35s
Hypervisor based Inspection enabled:	false
Report type:	full
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
Sample name:	main.sh4.elf
Detection:	MAL
Classification:	mal80.troj.evad.linELF@0/0@1/0

Runtime Messages

Command:	/tmp/main.sh4.elf
PID:	6238
Exit Code:	0
Exit Code Info:
Killed:	False
Standard Output:
Standard Error:

Process Tree

system is lnxubuntu20

main.sh4.elf (PID: 6238, Parent: 6160, MD5: 8943e5f8f8c280467b4472c15ae93ba9) Arguments: /tmp/main.sh4.elf

main.sh4.elf New Fork (PID: 6240, Parent: 6238)

main.sh4.elf New Fork (PID: 6246, Parent: 6240)

cleanup

Malware Threat Intel

Provided by

Name	Description	Attribution	Blogpost URLs	Link
Mirai	Mirai is one of the first significant botnets targeting exposed networking devices running Linux. Found in August 2016 by MalwareMustDie, its name means "future" in Japanese. Nowadays it targets a wide range of networked embedded devices such as IP cameras, home routers (many vendors involved), and other IoT devices. Since the source code was published on "Hack Forums" many variants of the Mirai family appeared, infecting mostly home networks all around the world.	No Attribution	http://osint.bambenekconsulting.com/feeds/ http://www.simonroses.com/2016/10/mirai-ddos-botnet-source-code-binary-analysis/ https://blog.malwaremustdie.org/2020/02/mmd-0065-2021-linuxmirai-fbot-re.html https://blog.netlab.360.com/another-lilin-dvr-0-day-being-used-to-spread-mirai-en/ https://blog.netlab.360.com/mirai_ptea-botnet-is-exploiting-undisclosed-kguard-dvr-vulnerability-en/	https://malpedia.caad.fkie.fraunhofer.de/details/elf.mirai

Yara Signatures

Initial Sample

Source	Rule	Description	Author	Strings
main.sh4.elf	JoeSecurity_Mirai_8	Yara detected Mirai	Joe Security
main.sh4.elf	Linux_Trojan_Gafgyt_28a2fe0c	unknown	unknown	0x15c0c:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15c20:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15c34:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15c48:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15c5c:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15c70:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15c84:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15c98:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15cac:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15cc0:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15cd4:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15ce8:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15cfc:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15d10:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15d24:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15d38:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15d4c:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15d60:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15d74:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15d88:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15d9c:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F
main.sh4.elf	Linux_Trojan_Gafgyt_ea92cca8	unknown	unknown	0x15acc:$a: 53 65 6C 66 20 52 65 70 20 46 75 63 6B 69 6E 67 20 4E 65 54 69 53 20 61 6E 64

Memory Dumps

Source	Rule	Description	Author	Strings
6238.1.00007f6fc8400000.00007f6fc8418000.r-x.sdmp	JoeSecurity_Mirai_8	Yara detected Mirai	Joe Security
6238.1.00007f6fc8400000.00007f6fc8418000.r-x.sdmp	Linux_Trojan_Gafgyt_28a2fe0c	unknown	unknown	0x15c0c:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15c20:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15c34:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15c48:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15c5c:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15c70:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15c84:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15c98:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15cac:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15cc0:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15cd4:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15ce8:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15cfc:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15d10:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15d24:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15d38:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15d4c:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15d60:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15d74:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15d88:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15d9c:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F
6238.1.00007f6fc8400000.00007f6fc8418000.r-x.sdmp	Linux_Trojan_Gafgyt_ea92cca8	unknown	unknown	0x15acc:$a: 53 65 6C 66 20 52 65 70 20 46 75 63 6B 69 6E 67 20 4E 65 54 69 53 20 61 6E 64
Process Memory Space: main.sh4.elf PID: 6238	JoeSecurity_Mirai_8	Yara detected Mirai	Joe Security
Process Memory Space: main.sh4.elf PID: 6238	Linux_Trojan_Gafgyt_28a2fe0c	unknown	unknown	0x439d:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x43b1:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x43c5:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x43d9:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x43ed:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x4401:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x4415:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x4429:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x443d:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x4451:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x4465:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x4479:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x448d:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x44a1:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x44b5:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x44c9:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x44dd:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x44f1:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x4505:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x4519:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x452d:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F
Process Memory Space: main.sh4.elf PID: 6238	Linux_Trojan_Gafgyt_ea92cca8	unknown	unknown	0x4283:$a: 53 65 6C 66 20 52 65 70 20 46 75 63 6B 69 6E 67 20 4E 65 54 69 53 20 61 6E 64
Click to see the 1 entries

Suricata Signatures

⊘No Suricata rule has matched

Joe Sandbox Signatures

Click to jump to signature section

Show All Signature Results

AV Detection

Antivirus / Scanner detection for submitted sample

Source: main.sh4.elf

Avira: detected

Multi AV Scanner detection for submitted file

Source: main.sh4.elf	ReversingLabs: Detection: 52%
Source: main.sh4.elf	Virustotal: Detection: 46%			Perma Link

Networking

Uses dynamic DNS services

Source: unknown

DNS query: name: unixbot.ddns.net

Source: global traffic

TCP traffic: 192.168.2.23:47300 -> 123.253.61.116:3778

Source: global traffic	TCP traffic: 192.168.2.23:43928 -> 91.189.91.42:443
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: 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: 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: global traffic

DNS traffic detected: DNS query: unixbot.ddns.net

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

System Summary

Malicious sample detected (through community Yara rule)

Source: main.sh4.elf, type: SAMPLE	Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: main.sh4.elf, type: SAMPLE	Matched rule: Linux_Trojan_Gafgyt_ea92cca8 Author: unknown
Source: 6238.1.00007f6fc8400000.00007f6fc8418000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: 6238.1.00007f6fc8400000.00007f6fc8418000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Gafgyt_ea92cca8 Author: unknown
Source: Process Memory Space: main.sh4.elf PID: 6238, type: MEMORYSTR	Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: Process Memory Space: main.sh4.elf PID: 6238, type: MEMORYSTR	Matched rule: Linux_Trojan_Gafgyt_ea92cca8 Author: unknown

Source: Initial sample	String containing 'busybox' found: /bin/busybox
Source: Initial sample	String containing 'busybox' found: /bin/busybox/usr/lib/systemd/systemd/usr/libexec/openssh/sftp-serverusr/shellmnt/sys/bin/boot/media/srv/var/run/sbin/lib/etc/dev/telnetsshwatchdogsshd/usr/compress/bin//compress/bin/compress/usr/bashmain_x86main_x86_64main_mipsmain_mipselmain_armmain_arm5main_arm6main_arm7main_ppcmain_m68kmain_sh4main_spchttpdtelnetddropbearropbearencodersystem/root/dvr_gui//root/dvr_app//anko-app//opt//tmp/var/mnt/boot/home/dev/..//root(deleted)/proc/self/exe

Source: ELF static info symbol of initial sample

.symtab present: no

Source: /tmp/main.sh4.elf (PID: 6246)

SIGKILL sent: pid: 2, result: successful

Jump to behavior

Source: main.sh4.elf, type: SAMPLE	Matched rule: Linux_Trojan_Gafgyt_28a2fe0c os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = a2c6beaec18ca876e8487c11bcc7a29279669588aacb7d3027d8d8df8f5bcead, id = 28a2fe0c-eed5-4c79-81e6-3b11b73a4ebd, last_modified = 2021-09-16
Source: main.sh4.elf, type: SAMPLE	Matched rule: Linux_Trojan_Gafgyt_ea92cca8 os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = aa4aee9f3d6bedd8234eaf8778895a0f5d71c42b21f2a428f01f121e85704e8e, id = ea92cca8-bba7-4a1c-9b88-a2d051ad0021, last_modified = 2021-09-16
Source: 6238.1.00007f6fc8400000.00007f6fc8418000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Gafgyt_28a2fe0c os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = a2c6beaec18ca876e8487c11bcc7a29279669588aacb7d3027d8d8df8f5bcead, id = 28a2fe0c-eed5-4c79-81e6-3b11b73a4ebd, last_modified = 2021-09-16
Source: 6238.1.00007f6fc8400000.00007f6fc8418000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Gafgyt_ea92cca8 os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = aa4aee9f3d6bedd8234eaf8778895a0f5d71c42b21f2a428f01f121e85704e8e, id = ea92cca8-bba7-4a1c-9b88-a2d051ad0021, last_modified = 2021-09-16
Source: Process Memory Space: main.sh4.elf PID: 6238, type: MEMORYSTR	Matched rule: Linux_Trojan_Gafgyt_28a2fe0c os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = a2c6beaec18ca876e8487c11bcc7a29279669588aacb7d3027d8d8df8f5bcead, id = 28a2fe0c-eed5-4c79-81e6-3b11b73a4ebd, last_modified = 2021-09-16
Source: Process Memory Space: main.sh4.elf PID: 6238, type: MEMORYSTR	Matched rule: Linux_Trojan_Gafgyt_ea92cca8 os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = aa4aee9f3d6bedd8234eaf8778895a0f5d71c42b21f2a428f01f121e85704e8e, id = ea92cca8-bba7-4a1c-9b88-a2d051ad0021, last_modified = 2021-09-16

Source: classification engine

Classification label: mal80.troj.evad.linELF@0/0@1/0

Hooking and other Techniques for Hiding and Protection

Sample deletes itself

Source: /tmp/main.sh4.elf (PID: 6238)

File: /tmp/main.sh4.elf

Jump to behavior

Source: /tmp/main.sh4.elf (PID: 6238)

Queries kernel information via 'uname':

Jump to behavior

Source: main.sh4.elf, 6238.1.000056319fb6c000.000056319fbcf000.rw-.sdmp	Binary or memory string: 1V5!/etc/qemu-binfmt/sh4
Source: main.sh4.elf, 6238.1.00007ffd98817000.00007ffd98838000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-sh4
Source: main.sh4.elf, 6238.1.00007ffd98817000.00007ffd98838000.rw-.sdmp	Binary or memory string: 6x86_64/usr/bin/qemu-sh4/tmp/main.sh4.elfSUDO_USER=saturninoPATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/snap/binDISPLAY=:1.0XAUTHORITY=/run/user/1000/gdm/XauthoritySUDO_UID=1000TERM=xterm-256colorCOLORTERM=truecolorLOGNAME=rootUSER=rootLANG=en_US.UTF-8SUDO_COMMAND=/bin/bashHOME=/rootMAIL=/var/mail/rootSUDO_GID=1000SHELL=/bin/bash/tmp/main.sh4.elf
Source: main.sh4.elf, 6238.1.000056319fb6c000.000056319fbcf000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/sh4

Stealing of Sensitive Information

Yara detected Mirai

Source: Yara match	File source: main.sh4.elf, type: SAMPLE
Source: Yara match	File source: 6238.1.00007f6fc8400000.00007f6fc8418000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: Process Memory Space: main.sh4.elf PID: 6238, type: MEMORYSTR

Remote Access Functionality

Yara detected Mirai

Source: Yara match	File source: main.sh4.elf, type: SAMPLE
Source: Yara match	File source: 6238.1.00007f6fc8400000.00007f6fc8418000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: Process Memory Space: main.sh4.elf PID: 6238, type: MEMORYSTR

Mitre Att&ck Matrix

Reconnaissance	Resource Development	Initial Access	Execution	Persistence	Privilege Escalation	Defense Evasion	Credential Access	Discovery	Lateral Movement	Collection	Command and Control	Exfiltration	Impact
Gather Victim Identity Information	Acquire Infrastructure	Valid Accounts	Windows Management Instrumentation	Path Interception	Path Interception	1 File Deletion	OS Credential Dumping	11 Security Software Discovery	Remote Services	Data from Local System	1 Encrypted Channel	Exfiltration Over Other Network Medium	Abuse Accessibility Features
Credentials	Domains	Default Accounts	Scheduled Task/Job	Boot or Logon Initialization Scripts	Boot or Logon Initialization Scripts	Rootkit	LSASS Memory	Application Window Discovery	Remote Desktop Protocol	Data from Removable Media	1 Non-Standard Port	Exfiltration Over Bluetooth	Network Denial of Service
Email Addresses	DNS Server	Domain Accounts	At	Logon Script (Windows)	Logon Script (Windows)	Obfuscated Files or Information	Security Account Manager	Query Registry	SMB/Windows Admin Shares	Data from Network Shared Drive	1 Non-Application Layer Protocol	Automated Exfiltration	Data Encrypted for Impact
Employee Names	Virtual Private Server	Local Accounts	Cron	Login Hook	Login Hook	Binary Padding	NTDS	System Network Configuration Discovery	Distributed Component Object Model	Input Capture	12 Application Layer Protocol	Traffic Duplication	Data Destruction

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
main.sh4.elf	53%	ReversingLabs	Linux.Trojan.Mirai
main.sh4.elf	46%	Virustotal		Browse
main.sh4.elf	100%	Avira	EXP/ELF.Mirai.Z.A

Dropped Files

⊘No Antivirus matches

Domains

⊘No Antivirus matches

URLs

⊘No Antivirus matches

Domains and IPs

Contacted Domains

Name	IP	Active	Malicious	Antivirus Detection	Reputation
unixbot.ddns.net	123.253.61.116	true	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
123.253.61.116	unixbot.ddns.net	Thailand	136523	COLODEE-AS-APCOLODEEDIGITALNETWORKCOLTDTH	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	Threat Name	Link	Context
109.202.202.202	kpLwzBouH4.elf	Get hash	malicious	Unknown	Browse	ch.archive.ubuntu.com/ubuntu/pool/main/f/firefox/firefox_92.0%2bbuild3-0ubuntu0.20.04.1_amd64.deb
91.189.91.43	fuckunix.arm7.elf	Get hash	malicious	Mirai	Browse
	Space.spc.elf	Get hash	malicious	Mirai	Browse
	main.mpsl.elf	Get hash	malicious	Mirai	Browse
	z0r0.arc.elf	Get hash	malicious	Mirai	Browse
	main.x86.elf	Get hash	malicious	Mirai	Browse
	fenty.arm4.elf	Get hash	malicious	Mirai	Browse
	Space.arm7.elf	Get hash	malicious	Mirai	Browse
	Space.arm.elf	Get hash	malicious	Mirai	Browse
	main.arm6.elf	Get hash	malicious	Mirai	Browse
	main.m68k.elf	Get hash	malicious	Mirai	Browse
123.253.61.116	fuckunix.arm7.elf	Get hash	malicious	Mirai	Browse
	main.mpsl.elf	Get hash	malicious	Mirai	Browse
	fuckunix.x86.elf	Get hash	malicious	Mirai	Browse
	main.x86.elf	Get hash	malicious	Mirai	Browse
	main.arm.elf	Get hash	malicious	Mirai	Browse
	main.mips.elf	Get hash	malicious	Mirai	Browse
	fuckunix.arm.elf	Get hash	malicious	Mirai	Browse
	main.ppc.elf	Get hash	malicious	Mirai	Browse
	main.m68k.elf	Get hash	malicious	Mirai	Browse
	fuckunix.ppc.elf	Get hash	malicious	Mirai	Browse
91.189.91.42	fuckunix.arm7.elf	Get hash	malicious	Mirai	Browse
	Space.spc.elf	Get hash	malicious	Mirai	Browse
	main.mpsl.elf	Get hash	malicious	Mirai	Browse
	z0r0.arc.elf	Get hash	malicious	Mirai	Browse
	main.x86.elf	Get hash	malicious	Mirai	Browse
	fenty.arm4.elf	Get hash	malicious	Mirai	Browse
	Space.arm7.elf	Get hash	malicious	Mirai	Browse
	Space.arm.elf	Get hash	malicious	Mirai	Browse
	main.arm6.elf	Get hash	malicious	Mirai	Browse
	main.m68k.elf	Get hash	malicious	Mirai	Browse

Domains

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
unixbot.ddns.net	main.mpsl.elf	Get hash	malicious	Mirai	Browse	123.253.61.116
	main.x86.elf	Get hash	malicious	Mirai	Browse	123.253.61.116
	main.arm.elf	Get hash	malicious	Mirai	Browse	123.253.61.116
	main.mips.elf	Get hash	malicious	Mirai	Browse	123.253.61.116
	main.ppc.elf	Get hash	malicious	Mirai	Browse	123.253.61.116
	main.m68k.elf	Get hash	malicious	Mirai	Browse	123.253.61.116
	main.arm5.elf	Get hash	malicious	Mirai	Browse	123.253.61.116

ASNs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
CANONICAL-ASGB	fuckunix.arm7.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	Space.spc.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	main.mpsl.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	fuckunix.x86.elf	Get hash	malicious	Mirai	Browse	185.125.190.26
	z0r0.arc.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	z0r0.mips.elf	Get hash	malicious	Unknown	Browse	185.125.190.26
	z0r0.mpsl.elf	Get hash	malicious	Unknown	Browse	185.125.190.26
	main.x86.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	fenty.arm4.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	Space.arm7.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
CANONICAL-ASGB	fuckunix.arm7.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	Space.spc.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	main.mpsl.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	fuckunix.x86.elf	Get hash	malicious	Mirai	Browse	185.125.190.26
	z0r0.arc.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	z0r0.mips.elf	Get hash	malicious	Unknown	Browse	185.125.190.26
	z0r0.mpsl.elf	Get hash	malicious	Unknown	Browse	185.125.190.26
	main.x86.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	fenty.arm4.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	Space.arm7.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
INIT7CH	fuckunix.arm7.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	Space.spc.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	main.mpsl.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	z0r0.arc.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	main.x86.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	fenty.arm4.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	Space.arm7.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	Space.arm.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	main.arm6.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	main.m68k.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
COLODEE-AS-APCOLODEEDIGITALNETWORKCOLTDTH	fuckunix.arm7.elf	Get hash	malicious	Mirai	Browse	123.253.61.116
	main.mpsl.elf	Get hash	malicious	Mirai	Browse	123.253.61.116
	fuckunix.x86.elf	Get hash	malicious	Mirai	Browse	123.253.61.116
	main.x86.elf	Get hash	malicious	Mirai	Browse	123.253.61.116
	main.arm.elf	Get hash	malicious	Mirai	Browse	123.253.61.116
	main.mips.elf	Get hash	malicious	Mirai	Browse	123.253.61.116
	fuckunix.arm.elf	Get hash	malicious	Mirai	Browse	123.253.61.116
	main.ppc.elf	Get hash	malicious	Mirai	Browse	123.253.61.116
	main.m68k.elf	Get hash	malicious	Mirai	Browse	123.253.61.116
	fuckunix.ppc.elf	Get hash	malicious	Mirai	Browse	123.253.61.116

JA3 Fingerprints

⊘No context

Dropped Files

⊘No context

Created / dropped Files

⊘No created / dropped files found

Static File Info

General

File type:	ELF 32-bit LSB executable, Renesas SH, version 1 (SYSV), statically linked, stripped
Entropy (8bit):	6.22559443794169
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	main.sh4.elf
File size:	117'568 bytes
MD5:	e19779488b479dd3c5a4ff184cbda783
SHA1:	9b5ba2e036e97816f36a3275b21d3393c52bbef6
SHA256:	285914eabaccc837a9732c0024ed61c3d36f90d5f61b1a910b0e020bc2ab4a94
SHA512:	577a4fdbb1b0558ec7409e1e0407e20e84d530e28f34008a3812a90ee2b06d125dd387f56df84694ffeaee4ca27b1acf78fcdbb8e966b83255e322b1a6844cec
SSDEEP:	1536:BGeH/d2Uz35mlbjE1BtkACcbpKGLaSVEYm9RzrWU26K9HtZMyJ:EEl2U4lXKt3HbQGeYmvrW56K7K
TLSH:	B0B35AB3D8266F58D255D470B0B18F796F63A59482871FBE19B6C2B04083D8EF605BF8
File Content Preview:	.ELF.....................@.4...........4. ...(...............@...@.h\|..h\|....................B...B.DI..x...........Q.td............................././"O.n........#.@........#.*@.S...o&O.n...l..............................././.../.a"O.!...n...a.b("...q.

Static ELF Info

ELF header
Class:	ELF32
Data:	2's complement, little endian
Version:	1 (current)
Machine:	<unknown>
Version Number:	0x1
Type:	EXEC (Executable file)
OS/ABI:	UNIX - System V
ABI Version:	0
Entry Point Address:	0x4001a0
Flags:	0x9
ELF Header Size:	52
Program Header Offset:	52
Program Header Size:	32
Number of Program Headers:	3
Section Header Offset:	117128
Section Header Size:	40
Number of Section Headers:	11
Header String Table Index:	10

Sections

Name	Type	Address	Offset	Size	EntSize	Flags	Flags Description	Align
	NULL	0x0	0x0	0x0	0x0	0x0		0
.init	PROGBITS	0x400094	0x94	0x30	0x0	0x6	AX	4
.text	PROGBITS	0x4000e0	0xe0	0x15320	0x0	0x6	AX	32
.fini	PROGBITS	0x415400	0x15400	0x24	0x0	0x6	AX	4
.rodata	PROGBITS	0x415424	0x15424	0x2844	0x0	0x2	A	4
.ctors	PROGBITS	0x428000	0x18000	0xc	0x0	0x3	WA	4
.dtors	PROGBITS	0x42800c	0x1800c	0x8	0x0	0x3	WA	4
.data	PROGBITS	0x428020	0x18020	0x4910	0x0	0x3	WA	32
.got	PROGBITS	0x42c930	0x1c930	0x14	0x4	0x3	WA	4
.bss	NOBITS	0x42c944	0x1c944	0x5634	0x0	0x3	WA	4
.shstrtab	STRTAB	0x0	0x1c944	0x43	0x0	0x0		1

Program Segments

Type	Offset	Virtual Address	Physical Address	File Size	Memory Size	Entropy	Flags	Flags Description	Align	Section Mappings
LOAD	0x0	0x400000	0x400000	0x17c68	0x17c68	6.9434	0x5	R E	0x10000	.init .text .fini .rodata
LOAD	0x18000	0x428000	0x428000	0x4944	0x9f78	0.4215	0x6	RW	0x10000	.ctors .dtors .data .got .bss
GNU_STACK	0x0	0x0	0x0	0x0	0x0	0.0000	0x7	RWE	0x4

Network Behavior

Network Port Distribution

TCP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Jan 5, 2025 14:57:51.185889959 CET	47300	3778	192.168.2.23	123.253.61.116
Jan 5, 2025 14:57:51.190728903 CET	3778	47300	123.253.61.116	192.168.2.23
Jan 5, 2025 14:57:51.190793991 CET	47300	3778	192.168.2.23	123.253.61.116
Jan 5, 2025 14:57:51.192192078 CET	47300	3778	192.168.2.23	123.253.61.116
Jan 5, 2025 14:57:51.197038889 CET	3778	47300	123.253.61.116	192.168.2.23
Jan 5, 2025 14:57:51.197081089 CET	47300	3778	192.168.2.23	123.253.61.116
Jan 5, 2025 14:57:51.201898098 CET	3778	47300	123.253.61.116	192.168.2.23
Jan 5, 2025 14:57:52.198189020 CET	43928	443	192.168.2.23	91.189.91.42
Jan 5, 2025 14:57:57.573436975 CET	42836	443	192.168.2.23	91.189.91.43
Jan 5, 2025 14:57:58.597290039 CET	42516	80	192.168.2.23	109.202.202.202
Jan 5, 2025 14:58:01.200974941 CET	47300	3778	192.168.2.23	123.253.61.116
Jan 5, 2025 14:58:01.205866098 CET	3778	47300	123.253.61.116	192.168.2.23
Jan 5, 2025 14:58:01.554847956 CET	3778	47300	123.253.61.116	192.168.2.23
Jan 5, 2025 14:58:01.554893970 CET	47300	3778	192.168.2.23	123.253.61.116
Jan 5, 2025 14:58:13.443255901 CET	43928	443	192.168.2.23	91.189.91.42
Jan 5, 2025 14:58:23.681962013 CET	42836	443	192.168.2.23	91.189.91.43
Jan 5, 2025 14:58:29.825088024 CET	42516	80	192.168.2.23	109.202.202.202
Jan 5, 2025 14:58:54.397846937 CET	43928	443	192.168.2.23	91.189.91.42
Jan 5, 2025 14:59:01.600687027 CET	47300	3778	192.168.2.23	123.253.61.116
Jan 5, 2025 14:59:01.605606079 CET	3778	47300	123.253.61.116	192.168.2.23
Jan 5, 2025 14:59:01.955212116 CET	3778	47300	123.253.61.116	192.168.2.23
Jan 5, 2025 14:59:01.955442905 CET	47300	3778	192.168.2.23	123.253.61.116

UDP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Jan 5, 2025 14:57:51.144318104 CET	47673	53	192.168.2.23	8.8.8.8
Jan 5, 2025 14:57:51.176719904 CET	53	47673	8.8.8.8	192.168.2.23

DNS Queries

Timestamp	Source IP	Dest IP	Trans ID	OP Code	Name	Type	Class	DNS over HTTPS
Jan 5, 2025 14:57:51.144318104 CET	192.168.2.23	8.8.8.8	0x0	Standard query (0)	unixbot.ddns.net	A (IP address)	IN (0x0001)	false

DNS Answers

Timestamp	Source IP	Dest IP	Trans ID	Reply Code	Name	CName	Address	Type	Class	DNS over HTTPS
Jan 5, 2025 14:57:51.176719904 CET	8.8.8.8	192.168.2.23	0x0	No error (0)	unixbot.ddns.net		123.253.61.116	A (IP address)	IN (0x0001)	false

System Behavior

Analysis Process: main.sh4.elf PID: 6238, Parent PID: 6160

General

Start time (UTC):	13:57:50
Start date (UTC):	05/01/2025
Path:	/tmp/main.sh4.elf
Arguments:	/tmp/main.sh4.elf
File size:	4139976 bytes
MD5 hash:	8943e5f8f8c280467b4472c15ae93ba9

Chronological Activities

Analysis Process: main.sh4.elf PID: 6240, Parent PID: 6238

General

Start time (UTC):	13:57:50
Start date (UTC):	05/01/2025
Path:	/tmp/main.sh4.elf
Arguments:	-
File size:	4139976 bytes
MD5 hash:	8943e5f8f8c280467b4472c15ae93ba9

Chronological Activities

Analysis Process: main.sh4.elf PID: 6246, Parent PID: 6240

General

Start time (UTC):	13:57:50
Start date (UTC):	05/01/2025
Path:	/tmp/main.sh4.elf
Arguments:	-
File size:	4139976 bytes
MD5 hash:	8943e5f8f8c280467b4472c15ae93ba9

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 (ex: Ingress Tool Transfer ) 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:	Command: Command Execution, File: File Deletion
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:	Command: Command Execution, Firewall: Firewall Enumeration, Firewall: Firewall Metadata, Process: OS API Execution, Process: Process Creation
Platforms:	Azure AD, Google Workspace, IaaS, Linux, macOS, Office 365, SaaS, 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:	Network Traffic: Network Traffic Content
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may communicate using a protocol and port pairing that are typically not associated. For example, HTTPS over port 8088or port 587as opposed to the traditional port 443. Adversaries may make changes to the standard port used by a protocol to bypass filtering or muddle analysis/parsing of network data.
Tactics:	Command and Control
Data Sources:	Network Traffic: Network Traffic Content, Network Traffic: Network Traffic Flow
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may use an OSI non-application layer protocol for communication between host and C2 server or among infected hosts within a network. The list of possible protocols is extensive.Specific examples include use of network layer protocols, such as the Internet Control Message Protocol (ICMP), transport layer protocols, such as the User Datagram Protocol (UDP), session layer protocols, such as Socket Secure (SOCKS), as well as redirected/tunneled protocols, such as Serial over LAN (SOL).
Tactics:	Command and Control
Data Sources:	Network Traffic: Network Traffic Content, Network Traffic: Network Traffic Flow
Platforms:	Linux, macOS, Network, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may communicate using OSI 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:	Network Traffic: Network Traffic Content, Network Traffic: Network Traffic Flow
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 main.sh4.elf

Overview

General Information

Detection

Signatures

Classification

General Information

Runtime Messages

Process Tree

Malware Threat Intel

Yara Signatures

Initial Sample

Memory Dumps

Suricata Signatures

Joe Sandbox Signatures

AV Detection

Networking

System Summary

Hooking and other Techniques for Hiding and Protection

Malware Analysis System Evasion

Stealing of Sensitive Information

Remote Access Functionality

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

World Map of Contacted IPs

Public IPs

Joe Sandbox View / Context

IPs

Domains

ASNs

JA3 Fingerprints

Dropped Files

Created / dropped Files

Static File Info

General

Static ELF Info

ELF header

Sections

Program Segments

Network Behavior

Network Port Distribution

TCP Packets

UDP Packets

DNS Queries

DNS Answers

System Behavior

Analysis Process: main.sh4.elf PID: 6238, Parent PID: 6160

General

Chronological Activities

Analysis Process: main.sh4.elf PID: 6240, Parent PID: 6238

General

Chronological Activities

Analysis Process: main.sh4.elf PID: 6246, Parent PID: 6240

General

Chronological Activities

Linux Analysis Report
main.sh4.elf