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Linux Analysis Report
z3u7dnBStL.elf

Overview

General Information

Sample name:	z3u7dnBStL.elf renamed because original name is a hash value
Original sample name:	bf1200bf14f6b52ed1ef8b75568b7753.elf
Analysis ID:	1426699
MD5:	bf1200bf14f6b52ed1ef8b75568b7753
SHA1:	6e26847636874e541cfb48c8adde88b8cff17e1c
SHA256:	4ea6db5fae8679b110af1cca107bcf470b60c1066881bcd25aadfe70332b73a6
Tags:	32armelfmirai
Infos:

Detection

Mirai

Score:	72
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

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

Sample has stripped symbol table

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

Yara signature match

Classification

Analysis Advice

Static ELF header machine description suggests that the sample might not execute correctly on this machine.

Exit code information suggests that the sample terminated abnormally, try to lookup the sample's target architecture.

Non-zero exit code suggests an error during the execution. Lookup the error code for hints.

Static ELF header machine description suggests that the sample might only run correctly on MIPS or ARM architectures.

General Information

Joe Sandbox version:	40.0.0 Tourmaline
Analysis ID:	1426699
Start date and time:	2024-04-16 14:02:21 +02:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 4m 33s
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:	z3u7dnBStL.elf renamed because original name is a hash value
Original Sample Name:	bf1200bf14f6b52ed1ef8b75568b7753.elf
Detection:	MAL
Classification:	mal72.troj.linELF@0/0@2/0

Runtime Messages

Command:	/tmp/z3u7dnBStL.elf
PID:	5517
Exit Code:	139
Exit Code Info:	SIGSEGV (11) Segmentation fault invalid memory reference
Killed:	False
Standard Output:
Standard Error:	qemu: uncaught target signal 11 (Segmentation fault) - core dumped

Process Tree

system is lnxubuntu20

z3u7dnBStL.elf (PID: 5517, Parent: 5441, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/z3u7dnBStL.elf

dash New Fork (PID: 5606, Parent: 3670)

rm (PID: 5606, Parent: 3670, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.quJnwvWnw9 /tmp/tmp.0asyiAsN19 /tmp/tmp.sNxz6L6XVy

dash New Fork (PID: 5608, Parent: 3670)

rm (PID: 5608, Parent: 3670, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.quJnwvWnw9 /tmp/tmp.0asyiAsN19 /tmp/tmp.sNxz6L6XVy

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
z3u7dnBStL.elf	JoeSecurity_Mirai_5	Yara detected Mirai	Joe Security
z3u7dnBStL.elf	Linux_Trojan_Gafgyt_28a2fe0c	unknown	unknown	0x15984:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15998:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x159ac:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x159c0:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x159d4:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x159e8:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x159fc:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15a10:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15a24:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15a38:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15a4c:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15a60:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15a74:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15a88:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15a9c:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15ab0:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15ac4:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15ad8:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15aec:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15b00:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15b14:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F
z3u7dnBStL.elf	MAL_ELF_LNX_Mirai_Oct10_2	Detects ELF malware Mirai related	Florian Roth	0x15904:$c01: 50 4F 53 54 20 2F 63 64 6E 2D 63 67 69 2F 00 00 20 48 54 54 50 2F 31 2E 31 0D 0A 55 73 65 72 2D 41 67 65 6E 74 3A 20 00 0D 0A 48 6F 73 74 3A

Memory Dumps

Source	Rule	Description	Author	Strings
5517.1.00007f07f4017000.00007f07f402f000.r-x.sdmp	JoeSecurity_Mirai_5	Yara detected Mirai	Joe Security
5517.1.00007f07f4017000.00007f07f402f000.r-x.sdmp	Linux_Trojan_Gafgyt_28a2fe0c	unknown	unknown	0x15984:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15998:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x159ac:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x159c0:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x159d4:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x159e8:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x159fc:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15a10:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15a24:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15a38:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15a4c:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15a60:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15a74:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15a88:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15a9c:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15ab0:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15ac4:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15ad8:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15aec:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15b00:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x15b14:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F
5517.1.00007f07f4017000.00007f07f402f000.r-x.sdmp	MAL_ELF_LNX_Mirai_Oct10_2	Detects ELF malware Mirai related	Florian Roth	0x15904:$c01: 50 4F 53 54 20 2F 63 64 6E 2D 63 67 69 2F 00 00 20 48 54 54 50 2F 31 2E 31 0D 0A 55 73 65 72 2D 41 67 65 6E 74 3A 20 00 0D 0A 48 6F 73 74 3A
Process Memory Space: z3u7dnBStL.elf PID: 5517	Linux_Trojan_Gafgyt_28a2fe0c	unknown	unknown	0x103:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x117:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x12b:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x13f:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x153:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x167:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x17b:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x18f:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x1a3:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x1b7:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x1cb:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x1df:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x1f3:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x207:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x21b:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x22f:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x243:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x257:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x26b:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x27f:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x293:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F

Snort Signatures

⊘No Snort 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: z3u7dnBStL.elf

Avira: detected

Multi AV Scanner detection for submitted file

Source: z3u7dnBStL.elf	Virustotal: Detection: 67%			Perma Link
Source: z3u7dnBStL.elf	ReversingLabs: Detection: 68%

Source: unknown	TCP traffic detected without corresponding DNS query: 54.247.62.1
Source: unknown	TCP traffic detected without corresponding DNS query: 34.254.182.186
Source: unknown	TCP traffic detected without corresponding DNS query: 34.254.182.186
Source: unknown	TCP traffic detected without corresponding DNS query: 34.254.182.186
Source: unknown	TCP traffic detected without corresponding DNS query: 34.254.182.186
Source: unknown	TCP traffic detected without corresponding DNS query: 34.254.182.186
Source: unknown	TCP traffic detected without corresponding DNS query: 34.254.182.186

Source: unknown

DNS traffic detected: queries for: daisy.ubuntu.com

Source: unknown	Network traffic detected: HTTP traffic on port 443 -> 44530
Source: unknown	Network traffic detected: HTTP traffic on port 44530 -> 443
Source: unknown	Network traffic detected: HTTP traffic on port 52466 -> 443

System Summary

Malicious sample detected (through community Yara rule)

Source: z3u7dnBStL.elf, type: SAMPLE	Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: z3u7dnBStL.elf, type: SAMPLE	Matched rule: Detects ELF malware Mirai related Author: Florian Roth
Source: 5517.1.00007f07f4017000.00007f07f402f000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: 5517.1.00007f07f4017000.00007f07f402f000.r-x.sdmp, type: MEMORY	Matched rule: Detects ELF malware Mirai related Author: Florian Roth
Source: Process Memory Space: z3u7dnBStL.elf PID: 5517, type: MEMORYSTR	Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown

Source: ELF static info symbol of initial sample

.symtab present: no

Source: z3u7dnBStL.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: z3u7dnBStL.elf, type: SAMPLE	Matched rule: MAL_ELF_LNX_Mirai_Oct10_2 date = 2018-10-27, hash1 = fa0018e75f503f9748a5de0d14d4358db234f65e28c31c8d5878cc58807081c9, author = Florian Roth, description = Detects ELF malware Mirai related, reference = Internal Research
Source: 5517.1.00007f07f4017000.00007f07f402f000.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: 5517.1.00007f07f4017000.00007f07f402f000.r-x.sdmp, type: MEMORY	Matched rule: MAL_ELF_LNX_Mirai_Oct10_2 date = 2018-10-27, hash1 = fa0018e75f503f9748a5de0d14d4358db234f65e28c31c8d5878cc58807081c9, author = Florian Roth, description = Detects ELF malware Mirai related, reference = Internal Research
Source: Process Memory Space: z3u7dnBStL.elf PID: 5517, 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: mal72.troj.linELF@0/0@2/0

Source: /usr/bin/dash (PID: 5606)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.quJnwvWnw9 /tmp/tmp.0asyiAsN19 /tmp/tmp.sNxz6L6XVy			Jump to behavior
Source: /usr/bin/dash (PID: 5608)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.quJnwvWnw9 /tmp/tmp.0asyiAsN19 /tmp/tmp.sNxz6L6XVy			Jump to behavior

Source: /tmp/z3u7dnBStL.elf (PID: 5517)

Queries kernel information via 'uname':

Jump to behavior

Source: z3u7dnBStL.elf, 5517.1.000055d7d85c7000.000055d7d86f5000.rw-.sdmp	Binary or memory string: U!/etc/qemu-binfmt/arm
Source: z3u7dnBStL.elf, 5517.1.00007ffca98a9000.00007ffca98ca000.rw-.sdmp	Binary or memory string: x86_64/usr/bin/qemu-arm/tmp/z3u7dnBStL.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/z3u7dnBStL.elf
Source: z3u7dnBStL.elf, 5517.1.000055d7d85c7000.000055d7d86f5000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/arm
Source: z3u7dnBStL.elf, 5517.1.00007ffca98a9000.00007ffca98ca000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-arm
Source: z3u7dnBStL.elf, 5517.1.00007ffca98a9000.00007ffca98ca000.rw-.sdmp	Binary or memory string: qemu: uncaught target signal 11 (Segmentation fault) - core dumped

Stealing of Sensitive Information

Yara detected Mirai

Source: Yara match	File source: z3u7dnBStL.elf, type: SAMPLE
Source: Yara match	File source: 5517.1.00007f07f4017000.00007f07f402f000.r-x.sdmp, type: MEMORY

Remote Access Functionality

Yara detected Mirai

Source: Yara match	File source: z3u7dnBStL.elf, type: SAMPLE
Source: Yara match	File source: 5517.1.00007f07f4017000.00007f07f402f000.r-x.sdmp, type: MEMORY

Mitre Att&ck Matrix

Reconnaissance	Resource Development	Initial Access	Execution	Persistence	Privilege Escalation	Defense Evasion	Credential Access	Discovery	Lateral Movement	Collection	Command and Control	Exfiltration	Impact
Gather Victim Identity Information	Acquire Infrastructure	Valid Accounts	Windows Management Instrumentation	Path Interception	Path Interception	1 File Deletion	OS Credential Dumping	11 Security Software Discovery	Remote Services	Data from Local System	1 Encrypted Channel	Exfiltration Over Other Network Medium	Abuse Accessibility Features
Credentials	Domains	Default Accounts	Scheduled Task/Job	Boot or Logon Initialization Scripts	Boot or Logon Initialization Scripts	Rootkit	LSASS Memory	Application Window Discovery	Remote Desktop Protocol	Data from Removable Media	1 Non-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	2 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

Screenshots

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
z3u7dnBStL.elf	68%	Virustotal		Browse
z3u7dnBStL.elf	68%	ReversingLabs	Linux.Trojan.Mirai
z3u7dnBStL.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
daisy.ubuntu.com	162.213.35.25	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
34.254.182.186	unknown	United States		16509	AMAZON-02US	false
54.247.62.1	unknown	United States		16509	AMAZON-02US	false

Joe Sandbox View / Context

IPs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link
34.254.182.186	YE6HFLEfb4.elf	Get hash	malicious	Unknown	Browse
	00kDn01FGP.elf	Get hash	malicious	Mirai	Browse
	F5owD542qK.elf	Get hash	malicious	Mirai	Browse
	6nuXoz7rzo.elf	Get hash	malicious	Gafgyt, Mirai	Browse
	CT9oaKX3q3.elf	Get hash	malicious	Unknown	Browse
	xulknaY6vd.elf	Get hash	malicious	Mirai, Moobot	Browse
	gEqPcxJPs4.elf	Get hash	malicious	Gafgyt, Mirai	Browse
	vlxx.x86_64-20240413-0016.elf	Get hash	malicious	Mirai	Browse
	Lu3hmMeb1i.elf	Get hash	malicious	Gafgyt	Browse
	tGUvOmucT1.elf	Get hash	malicious	Mirai	Browse
54.247.62.1	YE6HFLEfb4.elf	Get hash	malicious	Unknown	Browse
	0nfIIyGr0B.elf	Get hash	malicious	Mirai	Browse
	OurfOY2sbZ.elf	Get hash	malicious	Mirai	Browse
	xulknaY6vd.elf	Get hash	malicious	Mirai, Moobot	Browse
	SecuriteInfo.com.Linux.Siggen.9999.13380.14766.elf	Get hash	malicious	Unknown	Browse
	mJDl3m5Wmt.elf	Get hash	malicious	Mirai	Browse
	DkVBuCb3gf.elf	Get hash	malicious	Mirai	Browse
	HuQOCdLGIt.elf	Get hash	malicious	Mirai	Browse
	ZOOFmp9o18.elf	Get hash	malicious	Gafgyt, Mirai	Browse
	b5PyI4OVjJ.elf	Get hash	malicious	Mirai, Gafgyt	Browse

Domains

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
daisy.ubuntu.com	B7cl2k3l7y.elf	Get hash	malicious	Unknown	Browse	162.213.35.25
	YE6HFLEfb4.elf	Get hash	malicious	Unknown	Browse	162.213.35.25
	l93FFq2FQj.elf	Get hash	malicious	Unknown	Browse	162.213.35.25
	Cm7GbQyTGv.elf	Get hash	malicious	Mirai	Browse	162.213.35.24
	VxMFqinCKK.elf	Get hash	malicious	Mirai	Browse	162.213.35.25
	00kDn01FGP.elf	Get hash	malicious	Mirai	Browse	162.213.35.24
	oSPPLmZbTe.elf	Get hash	malicious	Mirai	Browse	162.213.35.25
	gK2yAWsLiL.elf	Get hash	malicious	Mirai	Browse	162.213.35.25
	qkxofQCmKL.elf	Get hash	malicious	Mirai	Browse	162.213.35.25
	CIzahLJ1XG.elf	Get hash	malicious	Mirai	Browse	162.213.35.24

ASNs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
AMAZON-02US	UTiFqtxJ1o.elf	Get hash	malicious	Mirai	Browse	35.76.151.145
	bnNLsZqj8B.elf	Get hash	malicious	Mirai	Browse	13.232.173.28
	IBpwSQBj5F.elf	Get hash	malicious	Unknown	Browse	34.249.145.219
	GFw6joeIJl.elf	Get hash	malicious	Mirai	Browse	54.151.38.228
	zLH4Gkr36e.elf	Get hash	malicious	Mirai	Browse	13.50.244.10
	YE6HFLEfb4.elf	Get hash	malicious	Unknown	Browse	54.247.62.1
	00kDn01FGP.elf	Get hash	malicious	Mirai	Browse	34.254.182.186
	F5owD542qK.elf	Get hash	malicious	Mirai	Browse	34.254.182.186
	IRtucjku4f.elf	Get hash	malicious	Mirai	Browse	54.171.230.55
	0nfIIyGr0B.elf	Get hash	malicious	Mirai	Browse	54.247.62.1
AMAZON-02US	UTiFqtxJ1o.elf	Get hash	malicious	Mirai	Browse	35.76.151.145
	bnNLsZqj8B.elf	Get hash	malicious	Mirai	Browse	13.232.173.28
	IBpwSQBj5F.elf	Get hash	malicious	Unknown	Browse	34.249.145.219
	GFw6joeIJl.elf	Get hash	malicious	Mirai	Browse	54.151.38.228
	zLH4Gkr36e.elf	Get hash	malicious	Mirai	Browse	13.50.244.10
	YE6HFLEfb4.elf	Get hash	malicious	Unknown	Browse	54.247.62.1
	00kDn01FGP.elf	Get hash	malicious	Mirai	Browse	34.254.182.186
	F5owD542qK.elf	Get hash	malicious	Mirai	Browse	34.254.182.186
	IRtucjku4f.elf	Get hash	malicious	Mirai	Browse	54.171.230.55
	0nfIIyGr0B.elf	Get hash	malicious	Mirai	Browse	54.247.62.1

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, EABI4 version 1 (SYSV), statically linked, stripped
Entropy (8bit):	6.100127475582964
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	z3u7dnBStL.elf
File size:	99'468 bytes
MD5:	bf1200bf14f6b52ed1ef8b75568b7753
SHA1:	6e26847636874e541cfb48c8adde88b8cff17e1c
SHA256:	4ea6db5fae8679b110af1cca107bcf470b60c1066881bcd25aadfe70332b73a6
SHA512:	db40206ff6b0e2c56e934622d486537efe690c0831f964825d300298bca34f74a0d4ca46554c97561c30ec0f0c398e963a3353bd6c64beff62b1000723097b1b
SSDEEP:	1536:uxnkY3RS4sAjoGiIANTThKcNe5zVMN6WCPJadO5b8MVicvwR8KRz/5bYi:83c4MGET1AhMEfRaGvwR8KRz/xF
TLSH:	3CA32A86BC419A11C6C10677FE2F118E331257ECE2DE73139D245B607BCB81B0E6BA5A
File Content Preview:	.ELF..............(.....T...4...........4. ...(.....................Pw..Pw..........................8...............Q.td..................................-...L..................@-.,@...0....S..... 0....S.........../..0...0...@..../.8.............-.@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:	UNIX - System V
ABI Version:	0
Entry Point Address:	0x8154
Flags:	0x4000002
ELF Header Size:	52
Program Header Offset:	52
Program Header Size:	32
Number of Program Headers:	3
Section Header Offset:	98988
Section Header Size:	40
Number of Section Headers:	12
Header String Table Index:	11

Sections

Name	Type	Address	Offset	Size	EntSize	Flags	Flags Description	Align
	NULL	0x0	0x0	0x0	0x0	0x0		0
.init	PROGBITS	0x8094	0x94	0x10	0x0	0x6	AX	4
.text	PROGBITS	0x80b0	0xb0	0x1583c	0x0	0x6	AX	16
.fini	PROGBITS	0x1d8ec	0x158ec	0x10	0x0	0x6	AX	4
.rodata	PROGBITS	0x1d900	0x15900	0x1e50	0x0	0x2	A	8
.init_array	INIT_ARRAY	0x20004	0x18008	0x4	0x0	0x3	WA	4
.fini_array	FINI_ARRAY	0x20008	0x1800c	0x4	0x0	0x3	WA	4
.got	PROGBITS	0x20010	0x18014	0x78	0x4	0x3	WA	4
.data	PROGBITS	0x20088	0x1808c	0x1b0	0x0	0x3	WA	4
.bss	NOBITS	0x20238	0x1823c	0x2758	0x0	0x3	WA	4
.ARM.attributes	ARM_ATTRIBUTES	0x0	0x1823c	0x10	0x0	0x0		1
.shstrtab	STRTAB	0x0	0x1824c	0x5d	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	0x17750	0x17750	6.2023	0x5	R E	0x8000	.init .text .fini .rodata
LOAD	0x18004	0x20004	0x20000	0x238	0xa98c	2.2387	0x6	RW	0x8000	.init_array .fini_array .got .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
Apr 16, 2024 14:03:04.832495928 CEST	52466	443	192.168.2.15	54.247.62.1
Apr 16, 2024 14:03:33.435468912 CEST	44530	443	192.168.2.15	34.254.182.186
Apr 16, 2024 14:03:33.435529947 CEST	443	44530	34.254.182.186	192.168.2.15
Apr 16, 2024 14:03:33.435655117 CEST	44530	443	192.168.2.15	34.254.182.186
Apr 16, 2024 14:03:33.440809965 CEST	44530	443	192.168.2.15	34.254.182.186
Apr 16, 2024 14:03:33.440835953 CEST	443	44530	34.254.182.186	192.168.2.15
Apr 16, 2024 14:04:33.434444904 CEST	44530	443	192.168.2.15	34.254.182.186
Apr 16, 2024 14:04:33.480124950 CEST	443	44530	34.254.182.186	192.168.2.15
Apr 16, 2024 14:04:43.259639025 CEST	443	44530	34.254.182.186	192.168.2.15
Apr 16, 2024 14:04:43.259835005 CEST	44530	443	192.168.2.15	34.254.182.186
Apr 16, 2024 14:04:43.259845972 CEST	443	44530	34.254.182.186	192.168.2.15
Apr 16, 2024 14:04:43.259919882 CEST	44530	443	192.168.2.15	34.254.182.186

UDP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Apr 16, 2024 14:03:00.454782963 CEST	57416	53	192.168.2.15	8.8.8.8
Apr 16, 2024 14:03:00.454847097 CEST	38247	53	192.168.2.15	8.8.8.8
Apr 16, 2024 14:03:00.559700012 CEST	53	38247	8.8.8.8	192.168.2.15
Apr 16, 2024 14:03:00.559762955 CEST	53	57416	8.8.8.8	192.168.2.15

DNS Queries

Timestamp	Source IP	Dest IP	Trans ID	OP Code	Name	Type	Class	DNS over HTTPS
Apr 16, 2024 14:03:00.454782963 CEST	192.168.2.15	8.8.8.8	0x24d7	Standard query (0)	daisy.ubuntu.com	A (IP address)	IN (0x0001)	false
Apr 16, 2024 14:03:00.454847097 CEST	192.168.2.15	8.8.8.8	0xc7d2	Standard query (0)	daisy.ubuntu.com	28	IN (0x0001)	false

DNS Answers

Timestamp	Source IP	Dest IP	Trans ID	Reply Code	Name	CName	Address	Type	Class	DNS over HTTPS
Apr 16, 2024 14:03:00.559762955 CEST	8.8.8.8	192.168.2.15	0x24d7	No error (0)	daisy.ubuntu.com		162.213.35.25	A (IP address)	IN (0x0001)	false
Apr 16, 2024 14:03:00.559762955 CEST	8.8.8.8	192.168.2.15	0x24d7	No error (0)	daisy.ubuntu.com		162.213.35.24	A (IP address)	IN (0x0001)	false

System Behavior

Analysis Process: z3u7dnBStL.elf PID: 5517, Parent PID: 5441

General

Start time (UTC):	12:02:58
Start date (UTC):	16/04/2024
Path:	/tmp/z3u7dnBStL.elf
Arguments:	/tmp/z3u7dnBStL.elf
File size:	4956856 bytes
MD5 hash:	5ebfcae4fe2471fcc5695c2394773ff1

Chronological Activities

Analysis Process: dash PID: 5606, Parent PID: 3670

General

Start time (UTC):	12:04:32
Start date (UTC):	16/04/2024
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Chronological Activities

Analysis Process: rm PID: 5606, Parent PID: 3670

General

Start time (UTC):	12:04:32
Start date (UTC):	16/04/2024
Path:	/usr/bin/rm
Arguments:	rm -f /tmp/tmp.quJnwvWnw9 /tmp/tmp.0asyiAsN19 /tmp/tmp.sNxz6L6XVy
File size:	72056 bytes
MD5 hash:	aa2b5496fdbfd88e38791ab81f90b95b

Chronological Activities

Analysis Process: dash PID: 5608, Parent PID: 3670

General

Start time (UTC):	12:04:32
Start date (UTC):	16/04/2024
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Chronological Activities

Analysis Process: rm PID: 5608, Parent PID: 3670

General

Start time (UTC):	12:04:32
Start date (UTC):	16/04/2024
Path:	/usr/bin/rm
Arguments:	rm -f /tmp/tmp.quJnwvWnw9 /tmp/tmp.0asyiAsN19 /tmp/tmp.sNxz6L6XVy
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 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 z3u7dnBStL.elf

Overview

General Information

Detection

Signatures

Classification

Analysis Advice

General Information

Runtime Messages

Process Tree

Malware Threat Intel

Yara Signatures

Initial Sample

Memory Dumps

Snort 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

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: z3u7dnBStL.elf PID: 5517, Parent PID: 5441

General

Chronological Activities

Analysis Process: dash PID: 5606, Parent PID: 3670

General

Chronological Activities

Analysis Process: rm PID: 5606, Parent PID: 3670

General

Chronological Activities

Analysis Process: dash PID: 5608, Parent PID: 3670

General

Chronological Activities

Analysis Process: rm PID: 5608, Parent PID: 3670

General

Chronological Activities

Linux Analysis Report
z3u7dnBStL.elf