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Linux Analysis Report
main.arm.elf

Overview

General Information

Sample name:	main.arm.elf
Analysis ID:	1584418
MD5:	e6d9e02fc61404e8123ad524528171d8
SHA1:	8cf9eb1501ad378ddbd124e92acdaef7a0d80f8d
SHA256:	cbb71ce731ef4d5454a61e41978082ee57f7d9123a4113fbae6982fee276f07f
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

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

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)

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:	1584418
Start date and time:	2025-01-05 14:13:08 +01:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 4m 20s
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.arm.elf
Detection:	MAL
Classification:	mal80.troj.evad.linELF@0/0@1/0

Runtime Messages

Command:	/tmp/main.arm.elf
PID:	5433
Exit Code:	0
Exit Code Info:
Killed:	False
Standard Output:
Standard Error:

Process Tree

system is lnxubuntu20

dash New Fork (PID: 5420, Parent: 3590)

rm (PID: 5420, Parent: 3590, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.iN3Nls4odg /tmp/tmp.E8YzN8YRoo /tmp/tmp.RdIOsEexiz

dash New Fork (PID: 5421, Parent: 3590)

rm (PID: 5421, Parent: 3590, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.iN3Nls4odg /tmp/tmp.E8YzN8YRoo /tmp/tmp.RdIOsEexiz

main.arm.elf (PID: 5433, Parent: 5356, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/main.arm.elf

main.arm.elf New Fork (PID: 5435, Parent: 5433)

main.arm.elf New Fork (PID: 5437, Parent: 5435)

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.arm.elf	JoeSecurity_Mirai_8	Yara detected Mirai	Joe Security
main.arm.elf	Linux_Trojan_Gafgyt_28a2fe0c	unknown	unknown	0x19758:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x1976c:$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 0x19780:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x19794:$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 0x197a8:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x197bc:$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 0x197d0:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x197e4:$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 0x197f8:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x1980c:$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 0x19820:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x19834:$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 0x19848:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x1985c:$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 0x19870:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x19884:$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 0x19898:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x198ac:$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 0x198c0:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x198d4:$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 0x198e8:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F
main.arm.elf	Linux_Trojan_Gafgyt_ea92cca8	unknown	unknown	0x19618:$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
5433.1.00007f56a8017000.00007f56a8033000.r-x.sdmp	JoeSecurity_Mirai_8	Yara detected Mirai	Joe Security
5433.1.00007f56a8017000.00007f56a8033000.r-x.sdmp	Linux_Trojan_Gafgyt_28a2fe0c	unknown	unknown	0x19758:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x1976c:$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 0x19780:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x19794:$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 0x197a8:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x197bc:$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 0x197d0:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x197e4:$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 0x197f8:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x1980c:$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 0x19820:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x19834:$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 0x19848:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x1985c:$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 0x19870:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x19884:$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 0x19898:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x198ac:$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 0x198c0:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x198d4:$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 0x198e8:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F
5433.1.00007f56a8017000.00007f56a8033000.r-x.sdmp	Linux_Trojan_Gafgyt_ea92cca8	unknown	unknown	0x19618:$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.arm.elf PID: 5433	JoeSecurity_Mirai_8	Yara detected Mirai	Joe Security
Process Memory Space: main.arm.elf PID: 5433	Linux_Trojan_Gafgyt_28a2fe0c	unknown	unknown	0x261:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x275:$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 0x289:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x29d:$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 0x2b1:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x2c5:$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 0x2d9:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x2ed:$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 0x301:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x315:$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 0x329:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x33d:$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 0x351:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x365:$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 0x379:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x38d:$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 0x3a1:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x3b5:$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 0x3c9:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x3dd:$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 0x3f1:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F
Process Memory Space: main.arm.elf PID: 5433	Linux_Trojan_Gafgyt_ea92cca8	unknown	unknown	0x147:$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.arm.elf

Avira: detected

Multi AV Scanner detection for submitted file

Source: main.arm.elf

Virustotal: Detection: 41%

Perma Link

Networking

Uses dynamic DNS services

Source: unknown

DNS query: name: unixbot.ddns.net

Source: global traffic

TCP traffic: 192.168.2.13:44318 -> 123.253.61.116:3778

Source: global traffic

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

System Summary

Malicious sample detected (through community Yara rule)

Source: main.arm.elf, type: SAMPLE	Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: main.arm.elf, type: SAMPLE	Matched rule: Linux_Trojan_Gafgyt_ea92cca8 Author: unknown
Source: 5433.1.00007f56a8017000.00007f56a8033000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: 5433.1.00007f56a8017000.00007f56a8033000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Gafgyt_ea92cca8 Author: unknown
Source: Process Memory Space: main.arm.elf PID: 5433, type: MEMORYSTR	Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: Process Memory Space: main.arm.elf PID: 5433, 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.arm.elf (PID: 5437)

SIGKILL sent: pid: 2, result: successful

Jump to behavior

Source: main.arm.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.arm.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: 5433.1.00007f56a8017000.00007f56a8033000.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: 5433.1.00007f56a8017000.00007f56a8033000.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.arm.elf PID: 5433, 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.arm.elf PID: 5433, 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

Source: /usr/bin/dash (PID: 5420)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.iN3Nls4odg /tmp/tmp.E8YzN8YRoo /tmp/tmp.RdIOsEexiz			Jump to behavior
Source: /usr/bin/dash (PID: 5421)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.iN3Nls4odg /tmp/tmp.E8YzN8YRoo /tmp/tmp.RdIOsEexiz			Jump to behavior

Hooking and other Techniques for Hiding and Protection

Sample deletes itself

Source: /tmp/main.arm.elf (PID: 5433)

File: /tmp/main.arm.elf

Jump to behavior

Source: /tmp/main.arm.elf (PID: 5433)

Queries kernel information via 'uname':

Jump to behavior

Source: main.arm.elf, 5433.1.000055933cbd4000.000055933cd02000.rw-.sdmp	Binary or memory string: U!/etc/qemu-binfmt/arm
Source: main.arm.elf, 5433.1.000055933cbd4000.000055933cd02000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/arm
Source: main.arm.elf, 5433.1.00007ffc356a8000.00007ffc356c9000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-arm
Source: main.arm.elf, 5433.1.00007ffc356a8000.00007ffc356c9000.rw-.sdmp	Binary or memory string: `x86_64/usr/bin/qemu-arm/tmp/main.arm.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.arm.elf

Stealing of Sensitive Information

Yara detected Mirai

Source: Yara match	File source: main.arm.elf, type: SAMPLE
Source: Yara match	File source: 5433.1.00007f56a8017000.00007f56a8033000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: Process Memory Space: main.arm.elf PID: 5433, type: MEMORYSTR

Remote Access Functionality

Yara detected Mirai

Source: Yara match	File source: main.arm.elf, type: SAMPLE
Source: Yara match	File source: 5433.1.00007f56a8017000.00007f56a8033000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: Process Memory Space: main.arm.elf PID: 5433, 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	11 File Deletion	OS Credential Dumping	11 Security Software Discovery	Remote Services	Data from Local System	1 Non-Standard Port	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-Application Layer Protocol	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	11 Application Layer Protocol	Automated Exfiltration	Data Encrypted for Impact

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.arm.elf	41%	Virustotal		Browse
main.arm.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	Flag	ASN	ASN Name	Malicious
123.253.61.116	unixbot.ddns.net	Thailand		136523	COLODEE-AS-APCOLODEEDIGITALNETWORKCOLTDTH	false

Joe Sandbox View / Context

IPs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link
123.253.61.116	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
	fuckunix.arm5.elf	Get hash	malicious	Mirai	Browse
	main.arm5.elf	Get hash	malicious	Mirai	Browse
	fuckunix.mpsl.elf	Get hash	malicious	Mirai	Browse
	fuckunix.sh4.elf	Get hash	malicious	Mirai	Browse
	fuckunix.mips.elf	Get hash	malicious	Mirai	Browse

Domains

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
unixbot.ddns.net	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
COLODEE-AS-APCOLODEEDIGITALNETWORKCOLTDTH	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
	fuckunix.arm5.elf	Get hash	malicious	Mirai	Browse	123.253.61.116
	main.arm5.elf	Get hash	malicious	Mirai	Browse	123.253.61.116
	fuckunix.mpsl.elf	Get hash	malicious	Mirai	Browse	123.253.61.116
	fuckunix.sh4.elf	Get hash	malicious	Mirai	Browse	123.253.61.116
	fuckunix.mips.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, ARM, version 1 (ARM), statically linked, stripped
Entropy (8bit):	5.497879611992405
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	main.arm.elf
File size:	133'920 bytes
MD5:	e6d9e02fc61404e8123ad524528171d8
SHA1:	8cf9eb1501ad378ddbd124e92acdaef7a0d80f8d
SHA256:	cbb71ce731ef4d5454a61e41978082ee57f7d9123a4113fbae6982fee276f07f
SHA512:	2777146a63559746547f1e66adc991a9e6362fe3aaf8dad35f81ccfa0b2961cd18bb3b61f50cf6bcb9228587c937fac0280b2279521c86ef4f149b4cc52e3300
SSDEEP:	1536:FKRuYmLyzC+V9cU8lA8z+ArXw4V5rFeT1kRk/S9a8qF8fyNlCjwywkRKAgFtXD+i:FKR7Gjm8yj4zUuRk/r3ow3uKX
TLSH:	14D30945F8504F23C6D611BBFB5E428D3B2A17E8D3EF720399256F20378656B0E36946
File Content Preview:	.ELF...a..........(.........4...........4. ...(.....................................................PI..............Q.td..................................-...L."....c..........0@-.\P...0....S.0...P@...0... ....R......0...0...........0... ....R..... 0....S

Static ELF Info

ELF header
Class:	ELF32
Data:	2's complement, little endian
Version:	1 (current)
Machine:	ARM
Version Number:	0x1
Type:	EXEC (Executable file)
OS/ABI:	ARM - ABI
ABI Version:	0
Entry Point Address:	0x8190
Flags:	0x202
ELF Header Size:	52
Program Header Offset:	52
Program Header Size:	32
Number of Program Headers:	3
Section Header Offset:	133520
Section Header Size:	40
Number of Section Headers:	10
Header String Table Index:	9

Sections

Name	Type	Address	Offset	Size	EntSize	Flags	Flags Description	Align
	NULL	0x0	0x0	0x0	0x0	0x0		0
.init	PROGBITS	0x8094	0x94	0x18	0x0	0x6	AX	4
.text	PROGBITS	0x80b0	0xb0	0x18e5c	0x0	0x6	AX	16
.fini	PROGBITS	0x20f0c	0x18f0c	0x14	0x0	0x6	AX	4
.rodata	PROGBITS	0x20f20	0x18f20	0x2884	0x0	0x2	A	4
.ctors	PROGBITS	0x2c000	0x1c000	0xc	0x0	0x3	WA	4
.dtors	PROGBITS	0x2c00c	0x1c00c	0x8	0x0	0x3	WA	4
.data	PROGBITS	0x2c020	0x1c020	0x4930	0x0	0x3	WA	32
.bss	NOBITS	0x30950	0x20950	0x5634	0x0	0x3	WA	4
.shstrtab	STRTAB	0x0	0x20950	0x3e	0x0	0x0		1

Program Segments

Type	Offset	Virtual Address	Physical Address	File Size	Memory Size	Entropy	Flags	Flags Description	Align	Section Mappings
LOAD	0x0	0x8000	0x8000	0x1b7a4	0x1b7a4	6.0836	0x5	R E	0x8000	.init .text .fini .rodata
LOAD	0x1c000	0x2c000	0x2c000	0x4950	0x9f84	0.4107	0x6	RW	0x8000	.ctors .dtors .data .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 14:13:53.952652931 CET	44318	3778	192.168.2.13	123.253.61.116
Jan 5, 2025 14:13:53.957530022 CET	3778	44318	123.253.61.116	192.168.2.13
Jan 5, 2025 14:13:53.957607031 CET	44318	3778	192.168.2.13	123.253.61.116
Jan 5, 2025 14:13:53.981625080 CET	44318	3778	192.168.2.13	123.253.61.116
Jan 5, 2025 14:13:53.986452103 CET	3778	44318	123.253.61.116	192.168.2.13
Jan 5, 2025 14:13:53.986526966 CET	44318	3778	192.168.2.13	123.253.61.116
Jan 5, 2025 14:13:53.991297960 CET	3778	44318	123.253.61.116	192.168.2.13
Jan 5, 2025 14:14:03.992029905 CET	44318	3778	192.168.2.13	123.253.61.116
Jan 5, 2025 14:14:03.997642994 CET	3778	44318	123.253.61.116	192.168.2.13
Jan 5, 2025 14:14:04.341926098 CET	3778	44318	123.253.61.116	192.168.2.13
Jan 5, 2025 14:14:04.342011929 CET	44318	3778	192.168.2.13	123.253.61.116
Jan 5, 2025 14:15:04.383930922 CET	44318	3778	192.168.2.13	123.253.61.116
Jan 5, 2025 14:15:04.388777018 CET	3778	44318	123.253.61.116	192.168.2.13
Jan 5, 2025 14:15:04.734469891 CET	3778	44318	123.253.61.116	192.168.2.13
Jan 5, 2025 14:15:04.734740973 CET	44318	3778	192.168.2.13	123.253.61.116

UDP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Jan 5, 2025 14:13:53.933891058 CET	37347	53	192.168.2.13	8.8.8.8
Jan 5, 2025 14:13:53.942920923 CET	53	37347	8.8.8.8	192.168.2.13

DNS Queries

Timestamp	Source IP	Dest IP	Trans ID	OP Code	Name	Type	Class	DNS over HTTPS
Jan 5, 2025 14:13:53.933891058 CET	192.168.2.13	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 14:13:53.942920923 CET	8.8.8.8	192.168.2.13	0x0	No error (0)	unixbot.ddns.net		123.253.61.116	A (IP address)	IN (0x0001)	false

System Behavior

Analysis Process: dash PID: 5420, Parent PID: 3590

General

Start time (UTC):	13:13:47
Start date (UTC):	05/01/2025
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Chronological Activities

Analysis Process: rm PID: 5420, Parent PID: 3590

General

Start time (UTC):	13:13:47
Start date (UTC):	05/01/2025
Path:	/usr/bin/rm
Arguments:	rm -f /tmp/tmp.iN3Nls4odg /tmp/tmp.E8YzN8YRoo /tmp/tmp.RdIOsEexiz
File size:	72056 bytes
MD5 hash:	aa2b5496fdbfd88e38791ab81f90b95b

Chronological Activities

Analysis Process: dash PID: 5421, Parent PID: 3590

General

Start time (UTC):	13:13:47
Start date (UTC):	05/01/2025
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Chronological Activities

Analysis Process: rm PID: 5421, Parent PID: 3590

General

Start time (UTC):	13:13:47
Start date (UTC):	05/01/2025
Path:	/usr/bin/rm
Arguments:	rm -f /tmp/tmp.iN3Nls4odg /tmp/tmp.E8YzN8YRoo /tmp/tmp.RdIOsEexiz
File size:	72056 bytes
MD5 hash:	aa2b5496fdbfd88e38791ab81f90b95b

Chronological Activities

Analysis Process: main.arm.elf PID: 5433, Parent PID: 5356

General

Start time (UTC):	13:13:53
Start date (UTC):	05/01/2025
Path:	/tmp/main.arm.elf
Arguments:	/tmp/main.arm.elf
File size:	4956856 bytes
MD5 hash:	5ebfcae4fe2471fcc5695c2394773ff1

Chronological Activities

Analysis Process: main.arm.elf PID: 5435, Parent PID: 5433

General

Start time (UTC):	13:13:53
Start date (UTC):	05/01/2025
Path:	/tmp/main.arm.elf
Arguments:	-
File size:	4956856 bytes
MD5 hash:	5ebfcae4fe2471fcc5695c2394773ff1

Chronological Activities

Analysis Process: main.arm.elf PID: 5437, Parent PID: 5435

General

Start time (UTC):	13:13:53
Start date (UTC):	05/01/2025
Path:	/tmp/main.arm.elf
Arguments:	-
File size:	4956856 bytes
MD5 hash:	5ebfcae4fe2471fcc5695c2394773ff1

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 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.arm.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

Persistence and Installation Behavior

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: dash PID: 5420, Parent PID: 3590

General

Chronological Activities

Analysis Process: rm PID: 5420, Parent PID: 3590

General

Chronological Activities

Analysis Process: dash PID: 5421, Parent PID: 3590

General

Chronological Activities

Analysis Process: rm PID: 5421, Parent PID: 3590

General

Chronological Activities

Analysis Process: main.arm.elf PID: 5433, Parent PID: 5356

General

Chronological Activities

Analysis Process: main.arm.elf PID: 5435, Parent PID: 5433

General

Chronological Activities

Linux Analysis Report
main.arm.elf