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Linux Analysis Report
iXklh2lms6.elf

Overview

General Information

Sample name:	iXklh2lms6.elf renamed because original name is a hash value
Original sample name:	b7928fa0eca22ff03800f7de4aca0ee7.elf
Analysis ID:	1428823
MD5:	b7928fa0eca22ff03800f7de4aca0ee7
SHA1:	c6022240cdd3e22f5464b9976401dfca54493d7b
SHA256:	6a0ffe70ad91779eb1b69825f407398c309d3bd83b9498132a03ff8a78b5f994
Tags:	32armelfmirai
Infos:

Detection

Mirai

Score:	56
Range:	0 - 100
Whitelisted:	false

Signatures

Multi AV Scanner detection for submitted file

Yara detected Mirai

ELF contains segments with high entropy indicating compressed/encrypted content

Sample contains only a LOAD segment without any section mappings

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

Classification

Analysis Advice

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

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:	1428823
Start date and time:	2024-04-19 17:05:10 +02:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 4m 37s
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:	iXklh2lms6.elf renamed because original name is a hash value
Original Sample Name:	b7928fa0eca22ff03800f7de4aca0ee7.elf
Detection:	MAL
Classification:	mal56.troj.linELF@0/0@0/0

Warnings

VT rate limit hit for: iXklh2lms6.elf

Runtime Messages

Command:	/tmp/iXklh2lms6.elf
PID:	5513
Exit Code:	1
Exit Code Info:
Killed:	False
Standard Output:
Standard Error:

Process Tree

system is lnxubuntu20

iXklh2lms6.elf (PID: 5513, Parent: 5438, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/iXklh2lms6.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

Memory Dumps

Source	Rule	Description	Author	Strings
5513.1.00007f4574017000.00007f457402f000.r-x.sdmp	JoeSecurity_Mirai_8	Yara detected Mirai	Joe Security

Snort Signatures

⊘No Snort rule has matched

Joe Sandbox Signatures

Click to jump to signature section

Show All Signature Results

AV Detection

Multi AV Scanner detection for submitted file

Source: iXklh2lms6.elf

ReversingLabs: Detection: 18%

Source: iXklh2lms6.elf, 5513.1.00007f4574017000.00007f457402f000.r-x.sdmp	String found in binary or memory: http://schemas.xmlsoap.org/soap/encoding/
Source: iXklh2lms6.elf, 5513.1.00007f4574017000.00007f457402f000.r-x.sdmp	String found in binary or memory: http://schemas.xmlsoap.org/soap/envelope/

Source: LOAD without section mappings

Program segment: 0x8000

Source: classification engine

Classification label: mal56.troj.linELF@0/0@0/0

Source: iXklh2lms6.elf	Submission file: segment LOAD with 7.8837 entropy (max. 8.0)
Source: iXklh2lms6.elf	Submission file: segment LOAD with 7.9739 entropy (max. 8.0)

Source: /tmp/iXklh2lms6.elf (PID: 5513)

Queries kernel information via 'uname':

Jump to behavior

Source: iXklh2lms6.elf, 5513.1.00005581b48bc000.00005581b49ea000.rw-.sdmp	Binary or memory string: U!/etc/qemu-binfmt/arm
Source: iXklh2lms6.elf, 5513.1.00007ffff2982000.00007ffff29a3000.rw-.sdmp	Binary or memory string: x86_64/usr/bin/qemu-arm/tmp/iXklh2lms6.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/iXklh2lms6.elf
Source: iXklh2lms6.elf, 5513.1.00005581b48bc000.00005581b49ea000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/arm
Source: iXklh2lms6.elf, 5513.1.00007ffff2982000.00007ffff29a3000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-arm

Stealing of Sensitive Information

Yara detected Mirai

Source: Yara match

File source: 5513.1.00007f4574017000.00007f457402f000.r-x.sdmp, type: MEMORY

Remote Access Functionality

Yara detected Mirai

Source: Yara match

File source: 5513.1.00007f4574017000.00007f457402f000.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 Obfuscated Files or Information	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
iXklh2lms6.elf	18%	ReversingLabs	Linux.Trojan.Svirtu

Dropped Files

⊘No Antivirus matches

Domains

⊘No Antivirus matches

URLs

⊘No Antivirus matches

Domains and IPs

Contacted Domains

⊘No contacted domains info

URLs from Memory and Binaries

Name	Source	Malicious	Antivirus Detection	Reputation
http://schemas.xmlsoap.org/soap/encoding/	iXklh2lms6.elf, 5513.1.00007f4574017000.00007f457402f000.r-x.sdmp	false		high
http://schemas.xmlsoap.org/soap/envelope/	iXklh2lms6.elf, 5513.1.00007f4574017000.00007f457402f000.r-x.sdmp	false		high

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, version 1 (ARM), statically linked, no section header
Entropy (8bit):	7.971916120361608
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	iXklh2lms6.elf
File size:	44'372 bytes
MD5:	b7928fa0eca22ff03800f7de4aca0ee7
SHA1:	c6022240cdd3e22f5464b9976401dfca54493d7b
SHA256:	6a0ffe70ad91779eb1b69825f407398c309d3bd83b9498132a03ff8a78b5f994
SHA512:	9153ea3fce59d54050029f153077a95f55bf253153b321b5ed6a8efdb502e651b6ef4f32994173b4a1199be3aa153e126a859a7596ed51bf4591ebfa0d845cac
SSDEEP:	768:CbCL2fVXl/ER5y4+wDZ74J4lDccu44UIbqwedAk5pIu3UGDA4e:nS3E3p4+lqN0q6Dte
TLSH:	2413F19445859A92D8F17C31CE3B9EC70B038BB5E14ABAB1B00CC7BC95A678879ED056
File Content Preview:	.ELF...a..........(.........4...........4. ...(.....................................................C...C...........Q.td............................\...sfga........xu..xu......S..........?.E.h;.}...^..........f4...R..A...u....."Dm....}.jd.....P.b...../...

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:	0x39a94
Flags:	0x202
ELF Header Size:	52
Program Header Offset:	52
Program Header Size:	32
Number of Program Headers:	3
Section Header Offset:	0
Section Header Size:	40
Number of Section Headers:	0
Header String Table Index:	0

Program Segments

Type	Offset	Virtual Address	Physical Address	File Size	Memory Size	Entropy	Flags	Flags Description	Align
LOAD	0x0	0x8000	0x8000	0x1000	0x2181c	7.8837	0x6	RW	0x8000
LOAD	0x0	0x30000	0x30000	0xac43	0xac43	7.9739	0x5	R E	0x8000
GNU_STACK	0x0	0x0	0x0	0x0	0x0	0.0000	0x7	RWE	0x4

Network Behavior

⊘No network behavior found

System Behavior

Analysis Process: iXklh2lms6.elf PID: 5513, Parent PID: 5438

General

Start time (UTC):	15:05:53
Start date (UTC):	19/04/2024
Path:	/tmp/iXklh2lms6.elf
Arguments:	/tmp/iXklh2lms6.elf
File size:	4956856 bytes
MD5 hash:	5ebfcae4fe2471fcc5695c2394773ff1

Description:	Adversaries may attempt to make an executable or file difficult to discover or analyze by encrypting, encoding, or otherwise obfuscating its contents on the system or in transit. This is common behavior that can be used across different platforms and the network to evade defenses.
Tactics:	Defense Evasion
Data Sources:	Command: Command Execution, File: File Creation, File: File Metadata, Module: Module Load, Process: OS API Execution, Process: Process Creation, Script: Script Execution, WMI: WMI Creation, Windows Registry: Windows Registry Key Creation
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

Behavior Section

Behavior Chronological

Disassembly

Uncategorized

Graph

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Linux Analysis Report iXklh2lms6.elf

Overview

General Information

Detection

Signatures

Classification

Analysis Advice

General Information

Warnings

Runtime Messages

Process Tree

Malware Threat Intel

Yara Signatures

Memory Dumps

Snort Signatures

Joe Sandbox Signatures

AV Detection

Networking

System Summary

Hooking and other Techniques for Hiding and Protection

Malware Analysis System Evasion

Stealing of Sensitive Information

Remote Access Functionality

Mitre Att&ck Matrix

Malware Configuration

Behavior Graph

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

Dropped Files

Domains

URLs

Domains and IPs

Contacted Domains

URLs from Memory and Binaries

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

Program Segments

Network Behavior

System Behavior

Analysis Process: iXklh2lms6.elf PID: 5513, Parent PID: 5438

General

Chronological Activities

Linux Analysis Report
iXklh2lms6.elf