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Linux Analysis Report
x86.fkunigr.elf

Overview

General Information

Sample name:	x86.fkunigr.elf
Analysis ID:	1646741
MD5:	ac9cd1c52aba9a5ba74270da5001a9fe
SHA1:	48237230cae5672c71de9b3f020a7603603dcd4b
SHA256:	6034c0032a55c9ce1432b6c2a70747f3b7bcbb2601830fa6ba6db8d205a304dc
Tags:	Miraiuser-elfdigest
Infos:

Detection

Mirai

Score:	72
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 has stripped symbol table

Yara signature match

Classification

General Information

Joe Sandbox version:	42.0.0 Malachite
Analysis ID:	1646741
Start date and time:	2025-03-24 09:04:18 +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:	x86.fkunigr.elf
Detection:	MAL
Classification:	mal72.troj.linELF@0/0@0/0

Warnings

VT rate limit hit for: http://213.209.129.92/lickmynutsnigah.sh;

Runtime Messages

Command:	/tmp/x86.fkunigr.elf
PID:	6232
Exit Code:	136
Exit Code Info:	SIGFPE (8) Floating-point exception
Killed:	False
Standard Output:
Standard Error:

Process Tree

system is lnxubuntu20

x86.fkunigr.elf (PID: 6232, Parent: 6155, MD5: ac9cd1c52aba9a5ba74270da5001a9fe) Arguments: /tmp/x86.fkunigr.elf

dash New Fork (PID: 6307, Parent: 4331)

rm (PID: 6307, Parent: 4331, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.CDluJV3Ppn /tmp/tmp.SZp33vgfnH /tmp/tmp.sUODOBJ0MP

dash New Fork (PID: 6308, Parent: 4331)

rm (PID: 6308, Parent: 4331, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.CDluJV3Ppn /tmp/tmp.SZp33vgfnH /tmp/tmp.sUODOBJ0MP

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
x86.fkunigr.elf	JoeSecurity_Mirai_8	Yara detected Mirai	Joe Security
x86.fkunigr.elf	Linux_Trojan_Gafgyt_28a2fe0c	unknown	unknown	0x12098:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x120ac:$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 0x120c0:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x120d4:$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 0x120e8:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x120fc:$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 0x12110:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x12124:$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 0x12138:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x1214c:$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 0x12160:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x12174:$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 0x12188:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x1219c:$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 0x121b0:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x121c4:$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 0x121d8:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x121ec:$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 0x12200:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x12214:$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 0x12228:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F
x86.fkunigr.elf	Linux_Trojan_Gafgyt_ea92cca8	unknown	unknown	0x11f78:$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
x86.fkunigr.elf	Linux_Trojan_Mirai_b14f4c5d	unknown	unknown	0x43d0:$a: 53 31 DB 8B 4C 24 0C 8B 54 24 08 83 F9 01 76 15 66 8B 02 83 E9 02 25 FF FF 00 00 83 C2 02 01 C3 83 F9 01 77 EB 49 75 05 0F BE 02 01 C3
x86.fkunigr.elf	Linux_Trojan_Mirai_5f7b67b8	unknown	unknown	0xb49f:$a: 89 38 83 CF FF 89 F8 5A 59 5F C3 57 56 83 EC 04 8B 7C 24 10 8B 4C
x86.fkunigr.elf	Linux_Trojan_Mirai_88de437f	unknown	unknown	0x7da2:$a: 24 08 8B 4C 24 04 85 D2 74 0D 31 C0 89 F6 C6 04 08 00 40 39 D0
x86.fkunigr.elf	Linux_Trojan_Mirai_389ee3e9	unknown	unknown	0xcf1e:$a: 89 45 00 EB 2C 8B 4B 04 8B 13 8B 7B 18 8B 01 01 02 8B 02 83
x86.fkunigr.elf	Linux_Trojan_Mirai_cc93863b	unknown	unknown	0xb8b6:$a: C3 57 8B 44 24 0C 8B 4C 24 10 8B 7C 24 08 F3 AA 8B 44 24 08
x86.fkunigr.elf	Linux_Trojan_Mirai_8aa7b5d3	unknown	unknown	0x7d72:$a: 8B 4C 24 14 8B 74 24 0C 8B 5C 24 10 85 C9 74 0D 31 D2 8A 04 1A 88
Click to see the 4 entries

Memory Dumps

Source	Rule	Description	Author	Strings
6232.1.0000000008048000.000000000805d000.r-x.sdmp	JoeSecurity_Mirai_8	Yara detected Mirai	Joe Security
6232.1.0000000008048000.000000000805d000.r-x.sdmp	Linux_Trojan_Gafgyt_28a2fe0c	unknown	unknown	0x12098:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x120ac:$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 0x120c0:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x120d4:$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 0x120e8:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x120fc:$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 0x12110:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x12124:$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 0x12138:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x1214c:$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 0x12160:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x12174:$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 0x12188:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x1219c:$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 0x121b0:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x121c4:$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 0x121d8:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x121ec:$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 0x12200:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x12214:$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 0x12228:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F
6232.1.0000000008048000.000000000805d000.r-x.sdmp	Linux_Trojan_Gafgyt_ea92cca8	unknown	unknown	0x11f78:$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
6232.1.0000000008048000.000000000805d000.r-x.sdmp	Linux_Trojan_Mirai_b14f4c5d	unknown	unknown	0x43d0:$a: 53 31 DB 8B 4C 24 0C 8B 54 24 08 83 F9 01 76 15 66 8B 02 83 E9 02 25 FF FF 00 00 83 C2 02 01 C3 83 F9 01 77 EB 49 75 05 0F BE 02 01 C3
6232.1.0000000008048000.000000000805d000.r-x.sdmp	Linux_Trojan_Mirai_5f7b67b8	unknown	unknown	0xb49f:$a: 89 38 83 CF FF 89 F8 5A 59 5F C3 57 56 83 EC 04 8B 7C 24 10 8B 4C
6232.1.0000000008048000.000000000805d000.r-x.sdmp	Linux_Trojan_Mirai_88de437f	unknown	unknown	0x7da2:$a: 24 08 8B 4C 24 04 85 D2 74 0D 31 C0 89 F6 C6 04 08 00 40 39 D0
6232.1.0000000008048000.000000000805d000.r-x.sdmp	Linux_Trojan_Mirai_389ee3e9	unknown	unknown	0xcf1e:$a: 89 45 00 EB 2C 8B 4B 04 8B 13 8B 7B 18 8B 01 01 02 8B 02 83
6232.1.0000000008048000.000000000805d000.r-x.sdmp	Linux_Trojan_Mirai_cc93863b	unknown	unknown	0xb8b6:$a: C3 57 8B 44 24 0C 8B 4C 24 10 8B 7C 24 08 F3 AA 8B 44 24 08
6232.1.0000000008048000.000000000805d000.r-x.sdmp	Linux_Trojan_Mirai_8aa7b5d3	unknown	unknown	0x7d72:$a: 8B 4C 24 14 8B 74 24 0C 8B 5C 24 10 85 C9 74 0D 31 D2 8A 04 1A 88
Process Memory Space: x86.fkunigr.elf PID: 6232	JoeSecurity_Mirai_8	Yara detected Mirai	Joe Security
Process Memory Space: x86.fkunigr.elf PID: 6232	Linux_Trojan_Gafgyt_28a2fe0c	unknown	unknown	0xd22:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xd36:$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 0xd4a:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xd5e:$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 0xd72:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xd86:$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 0xd9a:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xdae:$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 0xdc2:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xdd6:$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 0xdea:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xdfe:$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 0xe12:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xe26:$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 0xe3a:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xe4e:$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 0xe62:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xe76:$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 0xe8a:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xe9e:$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 0xeb2:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F
Process Memory Space: x86.fkunigr.elf PID: 6232	Linux_Trojan_Gafgyt_ea92cca8	unknown	unknown	0xc0c:$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 7 entries

Suricata Signatures

⊘No Suricata rule has matched

Joe Sandbox Signatures

• AV Detection
• Networking
• System Summary
• Persistence and Installation Behavior
• 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: x86.fkunigr.elf

Avira: detected

Multi AV Scanner detection for submitted file

Source: x86.fkunigr.elf	Virustotal: Detection: 50%			Perma Link
Source: x86.fkunigr.elf	ReversingLabs: Detection: 63%

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: x86.fkunigr.elf	String found in binary or memory: http://213.209.129.92/lickmynutsnigah.sh;
Source: x86.fkunigr.elf	String found in binary or memory: http://schemas.xmlsoap.org/soap/encoding/
Source: x86.fkunigr.elf	String found in binary or memory: http://schemas.xmlsoap.org/soap/envelope/
Source: x86.fkunigr.elf	String found in binary or memory: https://i.imgur.com/0r0MYas.gif

Source: unknown	Network traffic detected: HTTP traffic on port 43928 -> 443
Source: unknown	Network traffic detected: HTTP traffic on port 39248 -> 443
Source: unknown	Network traffic detected: HTTP traffic on port 443 -> 39248
Source: unknown	Network traffic detected: HTTP traffic on port 42836 -> 443

System Summary

Malicious sample detected (through community Yara rule)

Source: x86.fkunigr.elf, type: SAMPLE	Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: x86.fkunigr.elf, type: SAMPLE	Matched rule: Linux_Trojan_Gafgyt_ea92cca8 Author: unknown
Source: x86.fkunigr.elf, type: SAMPLE	Matched rule: Linux_Trojan_Mirai_b14f4c5d Author: unknown
Source: x86.fkunigr.elf, type: SAMPLE	Matched rule: Linux_Trojan_Mirai_5f7b67b8 Author: unknown
Source: x86.fkunigr.elf, type: SAMPLE	Matched rule: Linux_Trojan_Mirai_88de437f Author: unknown
Source: x86.fkunigr.elf, type: SAMPLE	Matched rule: Linux_Trojan_Mirai_389ee3e9 Author: unknown
Source: x86.fkunigr.elf, type: SAMPLE	Matched rule: Linux_Trojan_Mirai_cc93863b Author: unknown
Source: x86.fkunigr.elf, type: SAMPLE	Matched rule: Linux_Trojan_Mirai_8aa7b5d3 Author: unknown
Source: 6232.1.0000000008048000.000000000805d000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: 6232.1.0000000008048000.000000000805d000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Gafgyt_ea92cca8 Author: unknown
Source: 6232.1.0000000008048000.000000000805d000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Mirai_b14f4c5d Author: unknown
Source: 6232.1.0000000008048000.000000000805d000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Mirai_5f7b67b8 Author: unknown
Source: 6232.1.0000000008048000.000000000805d000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Mirai_88de437f Author: unknown
Source: 6232.1.0000000008048000.000000000805d000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Mirai_389ee3e9 Author: unknown
Source: 6232.1.0000000008048000.000000000805d000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Mirai_cc93863b Author: unknown
Source: 6232.1.0000000008048000.000000000805d000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Mirai_8aa7b5d3 Author: unknown
Source: Process Memory Space: x86.fkunigr.elf PID: 6232, type: MEMORYSTR	Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: Process Memory Space: x86.fkunigr.elf PID: 6232, type: MEMORYSTR	Matched rule: Linux_Trojan_Gafgyt_ea92cca8 Author: unknown

Source: ELF static info symbol of initial sample

.symtab present: no

Source: x86.fkunigr.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: x86.fkunigr.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: x86.fkunigr.elf, type: SAMPLE	Matched rule: Linux_Trojan_Mirai_b14f4c5d os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = a70d052918dd2fbc66db241da6438015130f0fb6929229bfe573546fe98da817, id = b14f4c5d-054f-46e6-9fa8-3588f1ef68b7, last_modified = 2021-09-16
Source: x86.fkunigr.elf, type: SAMPLE	Matched rule: Linux_Trojan_Mirai_5f7b67b8 os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 6cb5fb0b7c132e9c11ac72da43278025b60810ea3733c9c6d6ca966163185940, id = 5f7b67b8-3d7b-48a4-8f03-b6f2c92be92e, last_modified = 2021-09-16
Source: x86.fkunigr.elf, type: SAMPLE	Matched rule: Linux_Trojan_Mirai_88de437f reference_sample = 8dc745a6de6f319cd6021c3e147597315cc1be02099d78fc8aae94de0e1e4bc6, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = c19eb595c2b444a809bef8500c20342c9f46694d3018e268833f9b884133a1ea, id = 88de437f-9c98-4e1d-96c0-7b433c99886a, last_modified = 2021-09-16
Source: x86.fkunigr.elf, type: SAMPLE	Matched rule: Linux_Trojan_Mirai_389ee3e9 reference_sample = 5217f2a46cb93946e04ab00e385ad0fe0a2844b6ea04ef75ee9187aac3f3d52f, os = linux, severity = x86, creation_date = 2022-01-05, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 59f2359dc1f41d385d639d157b4cd9fc73d76d8abb7cc09d47632bb4c9a39e6e, id = 389ee3e9-70c1-4c93-a999-292cf6ff1652, last_modified = 2022-01-26
Source: x86.fkunigr.elf, type: SAMPLE	Matched rule: Linux_Trojan_Mirai_cc93863b reference_sample = 5217f2a46cb93946e04ab00e385ad0fe0a2844b6ea04ef75ee9187aac3f3d52f, os = linux, severity = x86, creation_date = 2022-01-05, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = f3ecd30f0b511a8e92cfa642409d559e7612c3f57a1659ca46c77aca809a00ac, id = cc93863b-1050-40ba-9d02-5ec9ce6a3a28, last_modified = 2022-01-26
Source: x86.fkunigr.elf, type: SAMPLE	Matched rule: Linux_Trojan_Mirai_8aa7b5d3 reference_sample = 5217f2a46cb93946e04ab00e385ad0fe0a2844b6ea04ef75ee9187aac3f3d52f, os = linux, severity = x86, creation_date = 2022-01-05, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 02a2c18c362df4b1fceb33f3b605586514ba9a00c7afedf71c04fa54d8146444, id = 8aa7b5d3-e1eb-4b55-b36a-0d3a242c06e9, last_modified = 2022-01-26
Source: 6232.1.0000000008048000.000000000805d000.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: 6232.1.0000000008048000.000000000805d000.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: 6232.1.0000000008048000.000000000805d000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Mirai_b14f4c5d os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = a70d052918dd2fbc66db241da6438015130f0fb6929229bfe573546fe98da817, id = b14f4c5d-054f-46e6-9fa8-3588f1ef68b7, last_modified = 2021-09-16
Source: 6232.1.0000000008048000.000000000805d000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Mirai_5f7b67b8 os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 6cb5fb0b7c132e9c11ac72da43278025b60810ea3733c9c6d6ca966163185940, id = 5f7b67b8-3d7b-48a4-8f03-b6f2c92be92e, last_modified = 2021-09-16
Source: 6232.1.0000000008048000.000000000805d000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Mirai_88de437f reference_sample = 8dc745a6de6f319cd6021c3e147597315cc1be02099d78fc8aae94de0e1e4bc6, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = c19eb595c2b444a809bef8500c20342c9f46694d3018e268833f9b884133a1ea, id = 88de437f-9c98-4e1d-96c0-7b433c99886a, last_modified = 2021-09-16
Source: 6232.1.0000000008048000.000000000805d000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Mirai_389ee3e9 reference_sample = 5217f2a46cb93946e04ab00e385ad0fe0a2844b6ea04ef75ee9187aac3f3d52f, os = linux, severity = x86, creation_date = 2022-01-05, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 59f2359dc1f41d385d639d157b4cd9fc73d76d8abb7cc09d47632bb4c9a39e6e, id = 389ee3e9-70c1-4c93-a999-292cf6ff1652, last_modified = 2022-01-26
Source: 6232.1.0000000008048000.000000000805d000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Mirai_cc93863b reference_sample = 5217f2a46cb93946e04ab00e385ad0fe0a2844b6ea04ef75ee9187aac3f3d52f, os = linux, severity = x86, creation_date = 2022-01-05, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = f3ecd30f0b511a8e92cfa642409d559e7612c3f57a1659ca46c77aca809a00ac, id = cc93863b-1050-40ba-9d02-5ec9ce6a3a28, last_modified = 2022-01-26
Source: 6232.1.0000000008048000.000000000805d000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Mirai_8aa7b5d3 reference_sample = 5217f2a46cb93946e04ab00e385ad0fe0a2844b6ea04ef75ee9187aac3f3d52f, os = linux, severity = x86, creation_date = 2022-01-05, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 02a2c18c362df4b1fceb33f3b605586514ba9a00c7afedf71c04fa54d8146444, id = 8aa7b5d3-e1eb-4b55-b36a-0d3a242c06e9, last_modified = 2022-01-26
Source: Process Memory Space: x86.fkunigr.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: Process Memory Space: x86.fkunigr.elf PID: 6232, 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: mal72.troj.linELF@0/0@0/0

Source: /usr/bin/dash (PID: 6307)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.CDluJV3Ppn /tmp/tmp.SZp33vgfnH /tmp/tmp.sUODOBJ0MP			Jump to behavior
Source: /usr/bin/dash (PID: 6308)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.CDluJV3Ppn /tmp/tmp.SZp33vgfnH /tmp/tmp.sUODOBJ0MP			Jump to behavior

Stealing of Sensitive Information

Yara detected Mirai

Source: Yara match	File source: x86.fkunigr.elf, type: SAMPLE
Source: Yara match	File source: 6232.1.0000000008048000.000000000805d000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: Process Memory Space: x86.fkunigr.elf PID: 6232, type: MEMORYSTR

Remote Access Functionality

Yara detected Mirai

Source: Yara match	File source: x86.fkunigr.elf, type: SAMPLE
Source: Yara match	File source: 6232.1.0000000008048000.000000000805d000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: Process Memory Space: x86.fkunigr.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	System Service 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

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

Source	Detection	Scanner	Label	Link
x86.fkunigr.elf	51%	Virustotal		Browse
x86.fkunigr.elf	64%	ReversingLabs	Linux.Backdoor.Mirai
x86.fkunigr.elf	100%	Avira	EXP/ELF.Mirai.Z.A

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	Reputation
http://213.209.129.92/lickmynutsnigah.sh;	x86.fkunigr.elf	false	unknown
http://schemas.xmlsoap.org/soap/encoding/	x86.fkunigr.elf	false	high
https://i.imgur.com/0r0MYas.gif	x86.fkunigr.elf	false	high
http://schemas.xmlsoap.org/soap/envelope/	x86.fkunigr.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	sh4.fkunigr.elf	Get hash	malicious	Mirai	Browse
	arm5.elf	Get hash	malicious	Mirai	Browse
	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
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	arm5.elf	Get hash	malicious	Unknown	Browse
	sh4.fkunigr.elf	Get hash	malicious	Mirai	Browse
	arm5.elf	Get hash	malicious	Mirai	Browse
	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
91.189.91.42	arm5.elf	Get hash	malicious	Unknown	Browse
	sh4.fkunigr.elf	Get hash	malicious	Mirai	Browse
	arm5.elf	Get hash	malicious	Mirai	Browse
	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

Domains

⊘No context

ASNs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
CANONICAL-ASGB	arm5.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	sh4.fkunigr.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	arm5.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	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
CANONICAL-ASGB	arm5.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	sh4.fkunigr.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	arm5.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	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
INIT7CH	arm5.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	sh4.fkunigr.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	arm5.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	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
AMAZON-02US	na.elf	Get hash	malicious	Prometei	Browse	52.212.150.54
	sh4.fkunigr.elf	Get hash	malicious	Mirai	Browse	34.249.145.219
	na.elf	Get hash	malicious	Prometei	Browse	52.212.150.54
	ppc.fkunigr.elf	Get hash	malicious	Mirai	Browse	34.243.160.129
	SWIFT MT103.Pdf.exe	Get hash	malicious	FormBook	Browse	13.248.169.48
	spc.elf	Get hash	malicious	Mirai, Moobot	Browse	18.251.232.4
	mpsl.elf	Get hash	malicious	Mirai, Moobot	Browse	13.225.135.58
	arm5.elf	Get hash	malicious	Mirai	Browse	34.249.145.219
	SHIPPING DOC.exe	Get hash	malicious	FormBook	Browse	13.248.169.48
	OvZRPCoQg7.exe	Get hash	malicious	Lokibot	Browse	13.248.169.48

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, Intel 80386, version 1 (SYSV), statically linked, stripped
Entropy (8bit):	5.859712252993151
TrID:	ELF Executable and Linkable format (Linux) (4029/14) 50.16% ELF Executable and Linkable format (generic) (4004/1) 49.84%
File name:	x86.fkunigr.elf
File size:	100'680 bytes
MD5:	ac9cd1c52aba9a5ba74270da5001a9fe
SHA1:	48237230cae5672c71de9b3f020a7603603dcd4b
SHA256:	6034c0032a55c9ce1432b6c2a70747f3b7bcbb2601830fa6ba6db8d205a304dc
SHA512:	941ccbc5ddc1aced7ee046e253bd8daaf576d700adafb77ba94a1fbd1ec4b8269281775d81c1efcf1507962573c5eaa00c4ea0a4ca9d7b051b47c0e07fe05692
SSDEEP:	1536:SHFfLhyZACCnTNmMAbqr8jEieBpp9/bVvkxTA0SJw3rAS+eKB6:SdLhySCCTNmM7r8j5UdkxkhJwbzh
TLSH:	79A36EC8F783D5F5D85305B1217BAF339B32E1FA1119EA93D3A89A32AC61501D60AB5C
File Content Preview:	.ELF....................d...4...........4. ...(......................@...@...............@...........F..l...........Q.td............................U..S.......;P...h........[]...$.............U......=.....t..5...................u........t....h............

Static ELF Info

ELF header
Class:	ELF32
Data:	2's complement, little endian
Version:	1 (current)
Machine:	Intel 80386
Version Number:	0x1
Type:	EXEC (Executable file)
OS/ABI:	UNIX - System V
ABI Version:	0
Entry Point Address:	0x8048164
Flags:	0x0
ELF Header Size:	52
Program Header Offset:	52
Program Header Size:	32
Number of Program Headers:	3
Section Header Offset:	100280
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	0x8048094	0x94	0x1c	0x0	0x6	AX	1
.text	PROGBITS	0x80480b0	0xb0	0x11436	0x0	0x6	AX	16
.fini	PROGBITS	0x80594e6	0x114e6	0x17	0x0	0x6	AX	1
.rodata	PROGBITS	0x8059500	0x11500	0x2bbc	0x0	0x2	A	32
.ctors	PROGBITS	0x805d0c0	0x140c0	0xc	0x0	0x3	WA	4
.dtors	PROGBITS	0x805d0cc	0x140cc	0x8	0x0	0x3	WA	4
.data	PROGBITS	0x805d100	0x14100	0x4678	0x0	0x3	WA	32
.bss	NOBITS	0x8061780	0x18778	0x4aac	0x0	0x3	WA	32
.shstrtab	STRTAB	0x0	0x18778	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	0x8048000	0x8048000	0x140bc	0x140bc	6.6415	0x5	R E	0x1000	.init .text .fini .rodata
LOAD	0x140c0	0x805d0c0	0x805d0c0	0x46b8	0x916c	0.2503	0x6	RW	0x1000	.ctors .dtors .data .bss
GNU_STACK	0x0	0x0	0x0	0x0	0x0	0.0000	0x6	RW	0x4

Network Behavior

Download Network PCAP: filtered – full

Network Port Distribution

Total Packets: 11
• 443 (HTTPS)
• 80 (HTTP)

TCP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Mar 24, 2025 09:05:08.484551907 CET	43928	443	192.168.2.23	91.189.91.42
Mar 24, 2025 09:05:13.860038042 CET	42836	443	192.168.2.23	91.189.91.43
Mar 24, 2025 09:05:14.883893967 CET	42516	80	192.168.2.23	109.202.202.202
Mar 24, 2025 09:05:25.730638027 CET	39248	443	192.168.2.23	34.249.145.219
Mar 24, 2025 09:05:25.730734110 CET	443	39248	34.249.145.219	192.168.2.23
Mar 24, 2025 09:05:25.730835915 CET	39248	443	192.168.2.23	34.249.145.219
Mar 24, 2025 09:05:25.731136084 CET	39248	443	192.168.2.23	34.249.145.219
Mar 24, 2025 09:05:25.731184006 CET	443	39248	34.249.145.219	192.168.2.23
Mar 24, 2025 09:05:28.449850082 CET	43928	443	192.168.2.23	91.189.91.42
Mar 24, 2025 09:05:40.736170053 CET	42836	443	192.168.2.23	91.189.91.43
Mar 24, 2025 09:05:44.831639051 CET	42516	80	192.168.2.23	109.202.202.202
Mar 24, 2025 09:06:09.404185057 CET	43928	443	192.168.2.23	91.189.91.42
Mar 24, 2025 09:06:25.722836971 CET	39248	443	192.168.2.23	34.249.145.219
Mar 24, 2025 09:06:25.768327951 CET	443	39248	34.249.145.219	192.168.2.23
Mar 24, 2025 09:07:10.886902094 CET	443	39248	34.249.145.219	192.168.2.23

System Behavior

Analysis Process: x86.fkunigr.elf PID: 6232, Parent PID: 6155

General

Start time (UTC):	08:05:06
Start date (UTC):	24/03/2025
Path:	/tmp/x86.fkunigr.elf
Arguments:	/tmp/x86.fkunigr.elf
File size:	100680 bytes
MD5 hash:	ac9cd1c52aba9a5ba74270da5001a9fe

Analysis Process: dash PID: 6307, Parent PID: 4331

General

Start time (UTC):	08:06:24
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: 6307, Parent PID: 4331

General

Start time (UTC):	08:06:24
Start date (UTC):	24/03/2025
Path:	/usr/bin/rm
Arguments:	rm -f /tmp/tmp.CDluJV3Ppn /tmp/tmp.SZp33vgfnH /tmp/tmp.sUODOBJ0MP
File size:	72056 bytes
MD5 hash:	aa2b5496fdbfd88e38791ab81f90b95b

File Activities

File Opened

File Deleted

File Read

Chronological Activities

Analysis Process: dash PID: 6308, Parent PID: 4331

General

Start time (UTC):	08:06:24
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: 6308, Parent PID: 4331

General

Start time (UTC):	08:06:24
Start date (UTC):	24/03/2025
Path:	/usr/bin/rm
Arguments:	rm -f /tmp/tmp.CDluJV3Ppn /tmp/tmp.SZp33vgfnH /tmp/tmp.sUODOBJ0MP
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 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

Loading Joe Sandbox Report ...

Warning!

Linux Analysis Report x86.fkunigr.elf

Overview

General Information

Detection

Signatures

Classification

General Information

Warnings

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

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

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

Network Behavior

Network Port Distribution

TCP Packets

System Behavior

Analysis Process: x86.fkunigr.elf PID: 6232, Parent PID: 6155

General

Analysis Process: dash PID: 6307, Parent PID: 4331

General

Process Activities

Process Overlayed (Exec)

Chronological Activities

Analysis Process: rm PID: 6307, Parent PID: 4331

General

File Activities

File Opened

File Deleted

File Read

Chronological Activities

Analysis Process: dash PID: 6308, Parent PID: 4331

General

Process Activities

Process Overlayed (Exec)

Chronological Activities

Analysis Process: rm PID: 6308, Parent PID: 4331

General

Linux Analysis Report
x86.fkunigr.elf