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Linux Analysis Report
arm6.elf

Overview

General Information

Sample name:	arm6.elf
Analysis ID:	1543654
MD5:	a17d4ab4920cd4a1a25549dd18f166b5
SHA1:	330575af46f07d72a8b7f62940bac395a63994b4
SHA256:	ddf2ffc2401f20a68a5aa356ca0e91a2ea98ce05ff86760d5671ee3bd7722cf3
Tags:	elfuser-abuse_ch
Infos:

Detection

Mirai

Score:	64
Range:	0 - 100
Whitelisted:	false

Signatures

Antivirus / Scanner detection for submitted sample

Multi AV Scanner detection for submitted file

Yara detected Mirai

Sample has stripped symbol table

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

Classification

General Information

Joe Sandbox version:	41.0.0 Charoite
Analysis ID:	1543654
Start date and time:	2024-10-28 08:40:51 +01:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 4m 13s
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:	arm6.elf
Detection:	MAL
Classification:	mal64.troj.linELF@0/0@0/0

Warnings

VT rate limit hit for: arm6.elf

Runtime Messages

Command:	/tmp/arm6.elf
PID:	5429
Exit Code:	0
Exit Code Info:
Killed:	False
Standard Output:
Standard Error:

Process Tree

system is lnxubuntu20

arm6.elf (PID: 5429, Parent: 5353, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/arm6.elf

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
arm6.elf	JoeSecurity_Mirai_8	Yara detected Mirai	Joe Security

Memory Dumps

Source	Rule	Description	Author	Strings
5429.1.00007fe4f4017000.00007fe4f4027000.r-x.sdmp	JoeSecurity_Mirai_8	Yara detected Mirai	Joe Security

Suricata Signatures

⊘No Suricata rule has matched

Joe Sandbox Signatures

Click to jump to signature section

Show All Signature Results

AV Detection

Antivirus / Scanner detection for submitted sample

Source: arm6.elf

Avira: detected

Multi AV Scanner detection for submitted file

Source: arm6.elf

ReversingLabs: Detection: 31%

Source: ELF static info symbol of initial sample

.symtab present: no

Source: classification engine

Classification label: mal64.troj.linELF@0/0@0/0

Source: /tmp/arm6.elf (PID: 5429)

Queries kernel information via 'uname':

Jump to behavior

Source: arm6.elf, 5429.1.00007ffe2c055000.00007ffe2c076000.rw-.sdmp	Binary or memory string: kx86_64/usr/bin/qemu-arm/tmp/arm6.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/arm6.elf
Source: arm6.elf, 5429.1.0000560438744000.0000560438872000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/arm
Source: arm6.elf, 5429.1.0000560438744000.0000560438872000.rw-.sdmp	Binary or memory string: V!/etc/qemu-binfmt/arm
Source: arm6.elf, 5429.1.00007ffe2c055000.00007ffe2c076000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-arm

Stealing of Sensitive Information

Yara detected Mirai

Source: Yara match	File source: arm6.elf, type: SAMPLE
Source: Yara match	File source: 5429.1.00007fe4f4017000.00007fe4f4027000.r-x.sdmp, type: MEMORY

Remote Access Functionality

Yara detected Mirai

Source: Yara match	File source: arm6.elf, type: SAMPLE
Source: Yara match	File source: 5429.1.00007fe4f4017000.00007fe4f4027000.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	Direct Volume Access	OS Credential Dumping	11 Security Software Discovery	Remote Services	Data from Local System	Data Obfuscation	Exfiltration Over Other Network Medium	Abuse Accessibility Features

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
arm6.elf	32%	ReversingLabs	Linux.Backdoor.Mirai
arm6.elf	100%	Avira	EXP/ELF.Mirai.W

Dropped Files

⊘No Antivirus matches

Domains

⊘No Antivirus matches

URLs

⊘No Antivirus matches

Domains and IPs

Contacted Domains

⊘No contacted domains info

World Map of Contacted IPs

⊘No contacted IP infos

Joe Sandbox View / Context

IPs

⊘No context

Domains

⊘No context

ASNs

⊘No context

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):	6.1279829721641494
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	arm6.elf
File size:	63'708 bytes
MD5:	a17d4ab4920cd4a1a25549dd18f166b5
SHA1:	330575af46f07d72a8b7f62940bac395a63994b4
SHA256:	ddf2ffc2401f20a68a5aa356ca0e91a2ea98ce05ff86760d5671ee3bd7722cf3
SHA512:	579a6ec3e158152149e90d70fdb7bb9c6af80a394cb2d2d6b2a326970be7f03a870177492dee2908fee1d8e85c79c7b1f29387062f5c0bba27492a1622fe3c9a
SSDEEP:	1536:8qunnDW5zVEH3TaQfvzGISPimAz3d7+7pZ5PY0Wl:UDW5ZEH3TaQofAz3d7+FZhzWl
TLSH:	4353E55AF8819B11D9D111BAFE0E118E731347ACE2EF73239E246B64778786B0E3B415
File Content Preview:	.ELF..............(.....T...4...........4. ...(.....................................................$...`(..........Q.td..................................-...L..................@-.,@...0....S..... 0....S.........../..0...0...@..../.0.............-.@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:	63148
Section Header Size:	40
Number of Section Headers:	14
Header String Table Index:	13

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	0xdc84	0x0	0x6	AX	16
.fini	PROGBITS	0x15d34	0xdd34	0x10	0x0	0x6	AX	4
.rodata	PROGBITS	0x15d48	0xdd48	0x15c4	0x0	0x2	A	8
.eh_frame	PROGBITS	0x1f30c	0xf30c	0x4	0x0	0x3	WA	4
.init_array	INIT_ARRAY	0x1f310	0xf310	0x4	0x0	0x3	WA	4
.fini_array	FINI_ARRAY	0x1f314	0xf314	0x4	0x0	0x3	WA	4
.jcr	PROGBITS	0x1f318	0xf318	0x4	0x0	0x3	WA	4
.got	PROGBITS	0x1f31c	0xf31c	0x74	0x4	0x3	WA	4
.data	PROGBITS	0x1f390	0xf390	0x2a0	0x0	0x3	WA	4
.bss	NOBITS	0x1f630	0xf630	0x253c	0x0	0x3	WA	4
.ARM.attributes	ARM_ATTRIBUTES	0x0	0xf630	0x10	0x0	0x0		1
.shstrtab	STRTAB	0x0	0xf640	0x6c	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	0xf30c	0xf30c	6.1538	0x5	R E	0x8000	.init .text .fini .rodata
LOAD	0xf30c	0x1f30c	0x1f30c	0x324	0x2860	4.2307	0x6	RW	0x8000	.eh_frame .init_array .fini_array .jcr .got .data .bss
GNU_STACK	0x0	0x0	0x0	0x0	0x0	0.0000	0x7	RWE	0x4

Network Behavior

⊘No network behavior found

System Behavior

Analysis Process: arm6.elf PID: 5429, Parent PID: 5353

General

Start time (UTC):	07:41:31
Start date (UTC):	28/10/2024
Path:	/tmp/arm6.elf
Arguments:	/tmp/arm6.elf
File size:	4956856 bytes
MD5 hash:	5ebfcae4fe2471fcc5695c2394773ff1

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

Behavior Section

Behavior Chronological

Disassembly

Uncategorized

Graph

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Linux Analysis Report arm6.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

System Summary

Malware Analysis System Evasion

Stealing of Sensitive Information

Remote Access Functionality

Mitre Att&ck Matrix

Malware Configuration

Behavior Graph

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

Dropped Files

Domains

URLs

Domains and IPs

Contacted Domains

World Map of Contacted IPs

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

System Behavior

Analysis Process: arm6.elf PID: 5429, Parent PID: 5353

General

Chronological Activities

Linux Analysis Report
arm6.elf