Edit tour

Linux Analysis Report
.5r3fqt67ew531has4231.arm6.elf

Overview

General Information

Sample name:	.5r3fqt67ew531has4231.arm6.elf
Analysis ID:	1644194
MD5:	0a6816481665367226412568e3a74364
SHA1:	4f88568c98df82482e4d3605f9dd6c5ed6b390a4
SHA256:	c24e8a9aeb41a70eed99e131197172097111d45aed7b3e240ea67bf576f55f3f
Tags:	elfuser-abuse_ch
Infos:

Detection

Score:	52
Range:	0 - 100

Signatures

Multi AV Scanner detection for submitted file

Sample is packed with UPX

ELF contains segments with high entropy indicating compressed/encrypted content

Executes the "systemctl" command used for controlling the systemd system and service manager

Reads system version information

Sample contains only a LOAD segment without any section mappings

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

Classification

General Information

Joe Sandbox version:	42.0.0 Malachite
Analysis ID:	1644194
Start date and time:	2025-03-20 12:49:25 +01:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 5m 15s
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:	.5r3fqt67ew531has4231.arm6.elf
Detection:	MAL
Classification:	mal52.evad.linELF@0/0@2/0

Runtime Messages

Command:	/tmp/.5r3fqt67ew531has4231.arm6.elf
PID:	5722
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

.5r3fqt67ew531has4231.arm6.elf (PID: 5722, Parent: 5527, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/.5r3fqt67ew531has4231.arm6.elf

systemd New Fork (PID: 5788, Parent: 1)

snap-failure (PID: 5788, Parent: 1, MD5: 69136a7d575731ce62349f2e4d3e5c36) Arguments: /usr/lib/snapd/snap-failure snapd

snap-failure New Fork (PID: 5802, Parent: 5788)

systemctl (PID: 5802, Parent: 5788, MD5: 4deddfb6741481f68aeac522cc26ff4b) Arguments: systemctl stop snapd.socket

snap-failure New Fork (PID: 5803, Parent: 5788)

cleanup

Yara Signatures

⊘No yara matches

Suricata Signatures

⊘No Suricata rule has matched

Joe Sandbox Signatures

• AV Detection
• Networking
• System Summary
• Data Obfuscation
• Persistence and Installation Behavior
• Hooking and other Techniques for Hiding and Protection
• Malware Analysis System Evasion

Click to jump to signature section

Show All Signature Results

AV Detection

Multi AV Scanner detection for submitted file

Source: .5r3fqt67ew531has4231.arm6.elf	Virustotal: Detection: 21%			Perma Link
Source: .5r3fqt67ew531has4231.arm6.elf	ReversingLabs: Detection: 30%

Source: global traffic

DNS traffic detected: DNS query: daisy.ubuntu.com

Source: .5r3fqt67ew531has4231.arm6.elf

String found in binary or memory: http://upx.sf.net

Source: LOAD without section mappings

Program segment: 0x8000

Source: classification engine

Classification label: mal52.evad.linELF@0/0@2/0

Data Obfuscation

Sample is packed with UPX

Source: initial sample	String containing UPX found: $Info: This file is packed with the UPX executable packer http://upx.sf.net $
Source: initial sample	String containing UPX found: $Info: This file is packed with the UPX executable packer http://upx.sf.net $
Source: initial sample	String containing UPX found: $Id: UPX 3.95 Copyright (C) 1996-2018 the UPX Team. All Rights Reserved. $

Source: /usr/lib/snapd/snap-failure (PID: 5802)

Systemctl executable: /usr/bin/systemctl -> systemctl stop snapd.socket

Jump to behavior

Source: /usr/lib/snapd/snap-failure (PID: 5788)

Reads version info: /proc/version

Jump to behavior

Source: .5r3fqt67ew531has4231.arm6.elf

Submission file: segment LOAD with 7.9833 entropy (max. 8.0)

Source: /tmp/.5r3fqt67ew531has4231.arm6.elf (PID: 5722)

Queries kernel information via 'uname':

Jump to behavior

Source: .5r3fqt67ew531has4231.arm6.elf, 5722.1.00007fff17186000.00007fff171a7000.rw-.sdmp	Binary or memory string: x86_64/usr/bin/qemu-arm/tmp/.5r3fqt67ew531has4231.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/.5r3fqt67ew531has4231.arm6.elf
Source: .5r3fqt67ew531has4231.arm6.elf, 5722.1.00005600d0d4b000.00005600d0e79000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/arm
Source: .5r3fqt67ew531has4231.arm6.elf, 5722.1.00007fff17186000.00007fff171a7000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-arm
Source: .5r3fqt67ew531has4231.arm6.elf, 5722.1.00005600d0d4b000.00005600d0e79000.rw-.sdmp	Binary or memory string: V!/etc/qemu-binfmt/arm
Source: .5r3fqt67ew531has4231.arm6.elf, 5722.1.00007fff17186000.00007fff171a7000.rw-.sdmp	Binary or memory string: qemu: uncaught target signal 11 (Segmentation fault) - core dumped

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	1 Systemd Service	1 Systemd Service	11 Obfuscated Files or Information	OS Credential Dumping	11 Security Software Discovery	Remote Services	Data from Local System	1 Non-Application Layer Protocol	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	1 System Information 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
.5r3fqt67ew531has4231.arm6.elf	21%	Virustotal		Browse
.5r3fqt67ew531has4231.arm6.elf	31%	ReversingLabs	Linux.Backdoor.Mirai

Dropped Files

⊘No Antivirus matches

Domains

⊘No Antivirus matches

URLs

⊘No Antivirus matches

Domains and IPs

Download Network PCAP: filtered – full

Contacted Domains

Name	IP	Active	Malicious	Antivirus Detection	Reputation
daisy.ubuntu.com	162.213.35.24	true	false		high

URLs from Memory and Binaries

Name	Source	Malicious	Antivirus Detection	Reputation
http://upx.sf.net	.5r3fqt67ew531has4231.arm6.elf	false		high

World Map of Contacted IPs

⊘No contacted IP infos

Joe Sandbox View / Context

IPs

⊘No context

Domains

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
daisy.ubuntu.com	.5r3fqt67ew531has4231.arm.elf	Get hash	malicious	Unknown	Browse	162.213.35.24
	.5r3fqt67ew531has4231.mips.elf	Get hash	malicious	Unknown	Browse	162.213.35.25
	.5r3fqt67ew531has4231.dbg.elf	Get hash	malicious	Mirai, Gafgyt, Moobot, Okiru	Browse	162.213.35.24
	.5r3fqt67ew531has4231.arm7.elf	Get hash	malicious	Unknown	Browse	162.213.35.24
	.5r3fqt67ew531has4231.arm5.elf	Get hash	malicious	Unknown	Browse	162.213.35.25
	main_arm6.elf	Get hash	malicious	Mirai	Browse	162.213.35.25
	arm5.elf	Get hash	malicious	Unknown	Browse	162.213.35.25
	debug.dbg.elf	Get hash	malicious	Mirai	Browse	162.213.35.25
	main_arm6.elf	Get hash	malicious	Mirai	Browse	162.213.35.24
	bot.mpsl.elf	Get hash	malicious	Unknown	Browse	162.213.35.24

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 (GNU/Linux), statically linked, no section header
Entropy (8bit):	7.982158041250768
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	.5r3fqt67ew531has4231.arm6.elf
File size:	60'976 bytes
MD5:	0a6816481665367226412568e3a74364
SHA1:	4f88568c98df82482e4d3605f9dd6c5ed6b390a4
SHA256:	c24e8a9aeb41a70eed99e131197172097111d45aed7b3e240ea67bf576f55f3f
SHA512:	53735d4e55c789e4692591051a180a0171e8f8b39b54431531f79d5b1bb00161efc60f01b37db2efbdf67cec17717488786e33c9f93e5b1e4e37cf700a96bb9f
SSDEEP:	1536:MAjZQzMl21+xQ3AgYVzHzQC0vckdwfFiuC:MekA++FVvy6fQ/
TLSH:	2C53F2A20E0AF0BBE6D50AFCE4109340B1792D768FDF3013E51B1ADA6BB1B4575E149B
File Content Preview:	.ELF..............(......Z..4...........4. ...(..........................................................[..........Q.td............................x.?.UPX!....................S..........?.E.h;....#..$..1).......*\|i.V..i...im.}.2.....3X .p..9s.a.9d..+.BFa

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 - Linux
ABI Version:	0
Entry Point Address:	0x15aec
Flags:	0x4000002
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	0xecef	0xecef	7.9833	0x5	R E	0x8000
LOAD	0x0	0x18000	0x18000	0x0	0x25be4	0.0000	0x6	RW	0x8000
GNU_STACK	0x0	0x0	0x0	0x0	0x0	0.0000	0x7	RWE	0x4

Network Behavior

Download Network PCAP: filtered – full

TCP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Mar 20, 2025 12:51:04.057399988 CET	34800	53	192.168.2.13	8.8.8.8
Mar 20, 2025 12:51:04.146599054 CET	53	34800	8.8.8.8	192.168.2.13
Mar 20, 2025 12:51:04.146825075 CET	34800	53	192.168.2.13	8.8.8.8
Mar 20, 2025 12:51:04.146826029 CET	34800	53	192.168.2.13	8.8.8.8
Mar 20, 2025 12:51:04.146826029 CET	34800	53	192.168.2.13	8.8.8.8
Mar 20, 2025 12:51:04.236100912 CET	53	34800	8.8.8.8	192.168.2.13
Mar 20, 2025 12:51:04.236120939 CET	53	34800	8.8.8.8	192.168.2.13
Mar 20, 2025 12:51:04.236131907 CET	53	34800	8.8.8.8	192.168.2.13
Mar 20, 2025 12:51:04.236140966 CET	53	34800	8.8.8.8	192.168.2.13
Mar 20, 2025 12:51:04.236304045 CET	34800	53	192.168.2.13	8.8.8.8
Mar 20, 2025 12:51:04.236304045 CET	34800	53	192.168.2.13	8.8.8.8
Mar 20, 2025 12:51:06.236530066 CET	53	34800	8.8.8.8	192.168.2.13
Mar 20, 2025 12:51:06.236785889 CET	34800	53	192.168.2.13	8.8.8.8
Mar 20, 2025 12:51:06.326262951 CET	53	34800	8.8.8.8	192.168.2.13

DNS Queries

Timestamp	Source IP	Dest IP	Trans ID	OP Code	Name	Type	Class	DNS over HTTPS
Mar 20, 2025 12:51:04.146826029 CET	192.168.2.13	8.8.8.8	0xd399	Standard query (0)	daisy.ubuntu.com	A (IP address)	IN (0x0001)	false
Mar 20, 2025 12:51:04.146826029 CET	192.168.2.13	8.8.8.8	0xbfdb	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
Mar 20, 2025 12:51:04.236131907 CET	8.8.8.8	192.168.2.13	0xd399	No error (0)	daisy.ubuntu.com		162.213.35.24	A (IP address)	IN (0x0001)	false
Mar 20, 2025 12:51:04.236131907 CET	8.8.8.8	192.168.2.13	0xd399	No error (0)	daisy.ubuntu.com		162.213.35.25	A (IP address)	IN (0x0001)	false

System Behavior

Analysis Process: .5r3fqt67ew531has4231.arm6.elf PID: 5722, Parent PID: 5527

General

Start time (UTC):	11:51:02
Start date (UTC):	20/03/2025
Path:	/tmp/.5r3fqt67ew531has4231.arm6.elf
Arguments:	/tmp/.5r3fqt67ew531has4231.arm6.elf
File size:	4956856 bytes
MD5 hash:	5ebfcae4fe2471fcc5695c2394773ff1

File Activities

File Opened

File Read

Process Activities

Signal Sent

Thread Sleep

System Activities

Query System Information (uname)

Chronological Activities

Analysis Process: systemd PID: 5788, Parent PID: 1

General

Start time (UTC):	11:51:41
Start date (UTC):	20/03/2025
Path:	/usr/lib/systemd/systemd
Arguments:	-
File size:	1620224 bytes
MD5 hash:	9b2bec7092a40488108543f9334aab75

Process Activities

Process Overlayed (Exec)

Chronological Activities

Analysis Process: snap-failure PID: 5788, Parent PID: 1

General

Start time (UTC):	11:51:41
Start date (UTC):	20/03/2025
Path:	/usr/lib/snapd/snap-failure
Arguments:	/usr/lib/snapd/snap-failure snapd
File size:	4764904 bytes
MD5 hash:	69136a7d575731ce62349f2e4d3e5c36

File Activities

File Opened

File Read

Process Activities

Process Forked

Thread Sleep

Chronological Activities

Analysis Process: snap-failure PID: 5802, Parent PID: 5788

General

Start time (UTC):	11:51:42
Start date (UTC):	20/03/2025
Path:	/usr/lib/snapd/snap-failure
Arguments:	-
File size:	4764904 bytes
MD5 hash:	69136a7d575731ce62349f2e4d3e5c36

Process Activities

Process Overlayed (Exec)

Chronological Activities

Analysis Process: systemctl PID: 5802, Parent PID: 5788

General

Start time (UTC):	11:51:42
Start date (UTC):	20/03/2025
Path:	/usr/bin/systemctl
Arguments:	systemctl stop snapd.socket
File size:	996584 bytes
MD5 hash:	4deddfb6741481f68aeac522cc26ff4b

File Activities

File Opened

File Read

Network Activities

Socket Connecting

Chronological Activities

Analysis Process: snap-failure PID: 5803, Parent PID: 5788

General

Start time (UTC):	11:51:43
Start date (UTC):	20/03/2025
Path:	/usr/lib/snapd/snap-failure
Arguments:	-
File size:	4764904 bytes
MD5 hash:	69136a7d575731ce62349f2e4d3e5c36

Description:	Adversaries may create or modify systemd services to repeatedly execute malicious payloads as part of persistence. Systemd is a system and service manager commonly used for managing background daemon processes (also known as services) and other system resources.Systemd is the default initialization (init) system on many Linux distributions replacing legacy init systems, including SysVinit and Upstart, while remaining backwards compatible.
Tactics:	Persistence, Privilege Escalation
Data Sources:	Command: Command Execution, File: File Creation, File: File Modification, Process: Process Creation, Service: Service Creation, Service: Service Modification
Platforms:	Linux
Url:	Open detailed description by Mitre

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

Description:	An adversary may attempt to get detailed information about the operating system and hardware, including version, patches, hotfixes, service packs, and architecture. Adversaries may use the information from System Information 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, Process: OS API Execution, Process: Process Creation
Platforms:	IaaS, Linux, macOS, Network, 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 .5r3fqt67ew531has4231.arm6.elf

Overview

General Information

Detection

Signatures

Classification

General Information

Runtime Messages

Process Tree

Yara Signatures

Suricata Signatures

Joe Sandbox Signatures

AV Detection

Networking

System Summary

Data Obfuscation

Persistence and Installation Behavior

Hooking and other Techniques for Hiding and Protection

Malware Analysis System Evasion

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

TCP Packets

DNS Queries

DNS Answers

System Behavior

Analysis Process: .5r3fqt67ew531has4231.arm6.elf PID: 5722, Parent PID: 5527

General

File Activities

File Opened

File Read

Process Activities

Signal Sent

Thread Sleep

System Activities

Query System Information (uname)

Chronological Activities

Analysis Process: systemd PID: 5788, Parent PID: 1

General

Process Activities

Process Overlayed (Exec)

Chronological Activities

Analysis Process: snap-failure PID: 5788, Parent PID: 1

General

File Activities

File Opened

File Read

Process Activities

Process Forked

Thread Sleep

Chronological Activities

Linux Analysis Report
.5r3fqt67ew531has4231.arm6.elf