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Linux Analysis Report
aarch64.elf

Overview

General Information

Sample name:	aarch64.elf
Analysis ID:	1649603
MD5:	44b9bdfb3a724897b36700b8d254cab6
SHA1:	7f3fcabaf6b07ff458f41d9f853c9fa9b9226a58
SHA256:	8ed151c524b2cbef6f419111d5cfb9a77ac714d9b223fbcbaa23c896b83994a1
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

Sample reads /proc/mounts (often used for finding a writable filesystem)

Enumerates processes within the "proc" file system

Sample has stripped symbol table

Sample listens on a socket

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

Classification

General Information

Joe Sandbox version:	42.0.0 Malachite
Analysis ID:	1649603
Start date and time:	2025-03-26 23:37:21 +01:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 4m 54s
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:	aarch64.elf
Detection:	MAL
Classification:	mal68.troj.linELF@0/4@2/0

Runtime Messages

Command:	/tmp/aarch64.elf
PID:	5488
Exit Code:	0
Exit Code Info:
Killed:	False
Standard Output:	For God so loved the world
Standard Error:

Process Tree

system is lnxubuntu20

aarch64.elf (PID: 5488, Parent: 5405, MD5: 02e8e39e1b46472a60d128a6da84a2b8) Arguments: /tmp/aarch64.elf

aarch64.elf New Fork (PID: 5492, Parent: 5488)

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
aarch64.elf	JoeSecurity_Mirai_8	Yara detected Mirai	Joe Security

Memory Dumps

Source	Rule	Description	Author	Strings
5492.1.0000000000400000.0000000000418000.r-x.sdmp	JoeSecurity_Mirai_8	Yara detected Mirai	Joe Security
5488.1.0000000000400000.0000000000418000.r-x.sdmp	JoeSecurity_Mirai_8	Yara detected Mirai	Joe Security

Suricata Signatures

⊘No Suricata rule has matched

Joe Sandbox Signatures

• AV Detection
• Networking
• System Summary
• Persistence and Installation Behavior
• Malware Analysis System Evasion
• Stealing of Sensitive Information
• Remote Access Functionality

Click to jump to signature section

Show All Signature Results

AV Detection

Antivirus / Scanner detection for submitted sample

Source: aarch64.elf

Avira: detected

Multi AV Scanner detection for submitted file

Source: aarch64.elf

ReversingLabs: Detection: 22%

Source: /tmp/aarch64.elf (PID: 5492)

Socket: 127.0.0.1:22448

Jump to behavior

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: global traffic

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

Source: ELF static info symbol of initial sample

.symtab present: no

Source: classification engine

Classification label: mal68.troj.linELF@0/4@2/0

Persistence and Installation Behavior

Sample reads /proc/mounts (often used for finding a writable filesystem)

Source: /tmp/aarch64.elf (PID: 5488)

File: /proc/5488/mounts

Jump to behavior

Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/230/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/110/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/231/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/111/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/232/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/112/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/233/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/113/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/234/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/114/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/235/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/115/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/236/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/116/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/237/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/117/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/238/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/118/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/239/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/119/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/914/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/914/fd	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/10/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/917/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/917/fd	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/11/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/12/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/13/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/14/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/15/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/16/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/17/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/18/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/19/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/240/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/3095/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/3095/fd	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/120/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/241/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/121/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/242/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/1/maps	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/1/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/1/fd	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/122/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/243/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/2/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/123/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/244/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/3/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/124/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/245/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/1588/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/1588/fd	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/125/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/4/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/246/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/126/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/5/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/247/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/127/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/6/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/248/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/128/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/7/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/249/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/129/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/8/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/800/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/800/fd	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/9/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/1906/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/1906/fd	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/802/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/802/fd	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/803/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/803/fd	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/20/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/21/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/22/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/23/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/24/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/25/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/26/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/27/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/28/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/29/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/3420/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/3420/fd	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/1482/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/1482/fd	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/1482/maps	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/490/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/490/fd	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/1480/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/1480/fd	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/1480/maps	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/250/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/371/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/130/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/251/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/131/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/252/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/132/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5488)	File opened: /proc/253/cmdline	Jump to behavior

Source: /tmp/aarch64.elf (PID: 5488)

Queries kernel information via 'uname':

Jump to behavior

Source: aarch64.elf, 5488.1.0000563af7bc4000.0000563af7cb0000.rw-.sdmp, aarch64.elf, 5492.1.0000563af7bc4000.0000563af7cb0000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/aarch64
Source: aarch64.elf, 5492.1.0000000000429000.0000000000438000.rw-.sdmp	Binary or memory string: vmware
Source: aarch64.elf, 5488.1.0000000000429000.0000000000438000.rw-.sdmp, aarch64.elf, 5492.1.0000000000429000.0000000000438000.rw-.sdmp	Binary or memory string: qemu-arm
Source: aarch64.elf, 5492.1.0000000000429000.0000000000438000.rw-.sdmp	Binary or memory string: BWcDwXR44ZAkzslsN0 a1gCWFxqAHsFWFMWT3YA!a1gAWFxuAXsFWUgBRQAA!a1gAWFxuAXsAWUgKRXgA!a1gAWFxuAXsAWEgJR3IA!a10CWFxuAHsGWVcWQHAA!a10CWFxuAHsGWVcWQHUA!aFwAWF9uA3sGW0gLRgAA!aFwAWFlpG2QBW0gJTwAA!qemu-arm2QBW0gJTwAA!vmware!/bin/bash!/bin/dash!/bin/shh!/proc/mounts!9.9.9.9unts!1.1.1.1!8.8.8.8!8.8.4.4
Source: aarch64.elf, 5488.1.00007ffde3531000.00007ffde3552000.rw-.sdmp, aarch64.elf, 5492.1.00007ffde3531000.00007ffde3552000.rw-.sdmp	Binary or memory string: x86_64/usr/bin/qemu-aarch64/tmp/aarch64.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/aarch64.elf
Source: aarch64.elf, 5488.1.0000563af7bc4000.0000563af7cb0000.rw-.sdmp, aarch64.elf, 5492.1.0000563af7bc4000.0000563af7cb0000.rw-.sdmp	Binary or memory string: :V1/etc/qemu-binfmt/aarch64O
Source: aarch64.elf, 5492.1.00007ffde3531000.00007ffde3552000.rw-.sdmp	Binary or memory string: qemu: uncaught target signal 11 (Segmentation fault) - core dumped
Source: aarch64.elf, 5488.1.00007ffde3531000.00007ffde3552000.rw-.sdmp, aarch64.elf, 5492.1.00007ffde3531000.00007ffde3552000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-aarch64

Stealing of Sensitive Information

Yara detected Mirai

Source: Yara match	File source: aarch64.elf, type: SAMPLE
Source: Yara match	File source: 5492.1.0000000000400000.0000000000418000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: 5488.1.0000000000400000.0000000000418000.r-x.sdmp, type: MEMORY

Remote Access Functionality

Yara detected Mirai

Source: Yara match	File source: aarch64.elf, type: SAMPLE
Source: Yara match	File source: 5492.1.0000000000400000.0000000000418000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: 5488.1.0000000000400000.0000000000418000.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	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	Boot or Logon Initialization Scripts	Boot or Logon Initialization Scripts	Rootkit	LSASS Memory	1 File and Directory 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
aarch64.elf	22%	ReversingLabs	Linux.Backdoor.Mirai
aarch64.elf	100%	Avira	LINUX/GM.Mirai.MD

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	162.213.35.25	true	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	rjfe686.elf	Get hash	malicious	Unknown	Browse	162.213.35.25
	arm6.elf	Get hash	malicious	Unknown	Browse	162.213.35.24
	mips.elf	Get hash	malicious	Mirai	Browse	162.213.35.25
	sh4.elf	Get hash	malicious	Unknown	Browse	162.213.35.24
	eehah4.elf	Get hash	malicious	Unknown	Browse	162.213.35.25
	arm.elf	Get hash	malicious	Mirai	Browse	162.213.35.25
	W3vOaER1Rg.elf	Get hash	malicious	Unknown	Browse	162.213.35.24
	efea6.elf	Get hash	malicious	Unknown	Browse	162.213.35.25
	vejfa5.elf	Get hash	malicious	Unknown	Browse	162.213.35.25
	efefa7.elf	Get hash	malicious	Mirai	Browse	162.213.35.25

ASNs

⊘No context

JA3 Fingerprints

⊘No context

Dropped Files

⊘No context

Created / dropped Files

/tmp/qemu-open.3ThlL8 (deleted)

Download File

Process:	/tmp/aarch64.elf
File Type:	ASCII text, with no line terminators
Category:	dropped
Size (bytes):	17
Entropy (8bit):	3.8521687236032816
Encrypted:	false
SSDEEP:	3:Tg80l:Tg8c
MD5:	6EA4D0DB8D845A86C7B09CF0667A2CB5
SHA1:	CE980AAA61B3974BA1C86B48D56CAA6A2BE3E9A1
SHA-256:	9AA96AD31F9C5CB1D9FAA1939C33156D29F6EB7FF422C58541452493FEA19ECD
SHA-512:	A43E0EF92BDE7860BB256540693113AE6594F12017132F7408425FC03074FFE05121C4320FD6126F66802528583AB7A54D3FABBA3E70EB1D9DABFA816EBAFFD9
Malicious:	false
Reputation:	moderate, very likely benign file
Preview:	/tmp/aarch64.elf.

/tmp/qemu-open.Dwvc68 (deleted)

Download File

Process:	/tmp/aarch64.elf
File Type:	ASCII text, with no line terminators
Category:	dropped
Size (bytes):	17
Entropy (8bit):	3.8521687236032816
Encrypted:	false
SSDEEP:	3:Tg80l:Tg8c
MD5:	6EA4D0DB8D845A86C7B09CF0667A2CB5
SHA1:	CE980AAA61B3974BA1C86B48D56CAA6A2BE3E9A1
SHA-256:	9AA96AD31F9C5CB1D9FAA1939C33156D29F6EB7FF422C58541452493FEA19ECD
SHA-512:	A43E0EF92BDE7860BB256540693113AE6594F12017132F7408425FC03074FFE05121C4320FD6126F66802528583AB7A54D3FABBA3E70EB1D9DABFA816EBAFFD9
Malicious:	false
Reputation:	moderate, very likely benign file
Preview:	/tmp/aarch64.elf.

/tmp/qemu-open.SsypP8 (deleted)

Download File

Process:	/tmp/aarch64.elf
File Type:	ASCII text
Category:	dropped
Size (bytes):	380
Entropy (8bit):	3.7057834572160733
Encrypted:	false
SSDEEP:	6:URgDFxHVSY/VUmVbsDFxJvT/VGuVE/VKV9/VO4VVyAb/r:IY/YZmV4/JcaEAW4VIAbr
MD5:	9B09FEE3F1568FD54D2D304426E5C8EB
SHA1:	CEFC5798BB3C5B918F36F0E73698249690BDD3C1
SHA-256:	D1E8FC7590C9ECAADC5A8B98E0C7A4E57090F8644213DCE649E6FF9F23D39D08
SHA-512:	6F1A45D0917BB87863078BB67CA6DBC9892CC06D0C4074F43F0F7591E6EA9E45B86693DA13E04C8DD4D2DFD06A7E687A5AAA6A9E320037952A49AAD13C8E98EE
Malicious:	false
Reputation:	low
Preview:	400000-418000 r-xp 00000000 fd:00 531606 /tmp/aarch64.elf.427000-429000 rw-p 00017000 fd:00 531606 /tmp/aarch64.elf.429000-438000 rw-p 00000000 00:00 0 .4000000000-4000001000 ---p 00000000 00:00 0 .4000001000-4000801000 rw-p 00000000 00:00 0 [stack].4000801000-4000802000 r--p 00000000 fd:00 793309 /usr/lib/x86_64-linux-gnu/libm-2.31.so.

/tmp/qemu-open.yIKaX8 (deleted)

Download File

Process:	/tmp/aarch64.elf
File Type:	ASCII text, with no line terminators
Category:	dropped
Size (bytes):	17
Entropy (8bit):	3.8521687236032816
Encrypted:	false
SSDEEP:	3:Tg80l:Tg8c
MD5:	6EA4D0DB8D845A86C7B09CF0667A2CB5
SHA1:	CE980AAA61B3974BA1C86B48D56CAA6A2BE3E9A1
SHA-256:	9AA96AD31F9C5CB1D9FAA1939C33156D29F6EB7FF422C58541452493FEA19ECD
SHA-512:	A43E0EF92BDE7860BB256540693113AE6594F12017132F7408425FC03074FFE05121C4320FD6126F66802528583AB7A54D3FABBA3E70EB1D9DABFA816EBAFFD9
Malicious:	false
Reputation:	moderate, very likely benign file
Preview:	/tmp/aarch64.elf.

Static File Info

General

File type:	ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), statically linked, stripped
Entropy (8bit):	6.3725954610604685
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	aarch64.elf
File size:	100'232 bytes
MD5:	44b9bdfb3a724897b36700b8d254cab6
SHA1:	7f3fcabaf6b07ff458f41d9f853c9fa9b9226a58
SHA256:	8ed151c524b2cbef6f419111d5cfb9a77ac714d9b223fbcbaa23c896b83994a1
SHA512:	48a070565b4212e94b4d0fe282ffeef71b9c8d6d5f7026dbb945cdfd4a2000184139ac224291b398bc6614e6d42525425546f10608a3ab9b0de6cd334a58662b
SSDEEP:	1536:8v5uv5blzYz7i5V1L8E/4UVsKsNBeLXEOenNYUE8kNJPv:QUG7m/XVfyeLXEOeU8aNv
TLSH:	98A37BB8394E3D92D3C7D37DCF058E71712B74B4CA6292A1BD01439EC1DADAB9AE0941
File Content Preview:	.ELF....................0.@.....@...................@.8...@.......................@.......@......u.......u................................B.......B.....(.........................................B.......B.............................Q.td...................

Static ELF Info

ELF header
Class:	ELF64
Data:	2's complement, little endian
Version:	1 (current)
Machine:	AArch64
Version Number:	0x1
Type:	EXEC (Executable file)
OS/ABI:	UNIX - System V
ABI Version:	0
Entry Point Address:	0x400d30
Flags:	0x0
ELF Header Size:	64
Program Header Offset:	64
Program Header Size:	56
Number of Program Headers:	4
Section Header Offset:	99464
Section Header Size:	64
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	0x400158	0x158	0x10	0x0	0x6	AX	4
.text	PROGBITS	0x400180	0x180	0x15510	0x0	0x6	AX	64
.fini	PROGBITS	0x415690	0x15690	0x10	0x0	0x6	AX	4
.rodata	PROGBITS	0x4156a0	0x156a0	0x1e60	0x0	0x2	A	16
.tbss	NOBITS	0x427f08	0x17f08	0x8	0x0	0x403	WAT	4
.init_array	INIT_ARRAY	0x427f08	0x17f08	0x8	0x8	0x3	WA	8
.fini_array	FINI_ARRAY	0x427f10	0x17f10	0x8	0x8	0x3	WA	8
.got	PROGBITS	0x427f18	0x17f18	0xd0	0x8	0x3	WA	8
.data	PROGBITS	0x428000	0x18000	0x430	0x0	0x3	WA	8
.bss	NOBITS	0x428430	0x18430	0x7e60	0x0	0x3	WA	8
.shstrtab	STRTAB	0x0	0x18430	0x53	0x0	0x0		1

Program Segments

Type	Offset	Virtual Address	Physical Address	File Size	Memory Size	Entropy	Flags	Flags Description	Align	Section Mappings
LOAD	0x0	0x400000	0x400000	0x17500	0x17500	6.5307	0x5	R E	0x10000	.init .text .fini .rodata
LOAD	0x17f08	0x427f08	0x427f08	0x528	0x8388	2.8603	0x6	RW	0x10000	.tbss .init_array .fini_array .got .data .bss
TLS	0x17f08	0x427f08	0x427f08	0x0	0x8	0.0000	0x4	R	0x4	.tbss
GNU_STACK	0x0	0x0	0x0	0x0	0x0	0.0000	0x6	RW	0x8

Network Behavior

Download Network PCAP: filtered – full

UDP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Mar 26, 2025 23:38:28.915139914 CET	35489	53	192.168.2.13	1.1.1.1
Mar 26, 2025 23:38:28.915220022 CET	37949	53	192.168.2.13	1.1.1.1
Mar 26, 2025 23:38:29.000061035 CET	53	37949	1.1.1.1	192.168.2.13
Mar 26, 2025 23:38:29.000186920 CET	53	35489	1.1.1.1	192.168.2.13

DNS Queries

Timestamp	Source IP	Dest IP	Trans ID	OP Code	Name	Type	Class	DNS over HTTPS
Mar 26, 2025 23:38:28.915139914 CET	192.168.2.13	1.1.1.1	0x785f	Standard query (0)	daisy.ubuntu.com	A (IP address)	IN (0x0001)	false
Mar 26, 2025 23:38:28.915220022 CET	192.168.2.13	1.1.1.1	0xc515	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 26, 2025 23:38:29.000186920 CET	1.1.1.1	192.168.2.13	0x785f	No error (0)	daisy.ubuntu.com		162.213.35.25	A (IP address)	IN (0x0001)	false
Mar 26, 2025 23:38:29.000186920 CET	1.1.1.1	192.168.2.13	0x785f	No error (0)	daisy.ubuntu.com		162.213.35.24	A (IP address)	IN (0x0001)	false

System Behavior

Analysis Process: aarch64.elf PID: 5488, Parent PID: 5405

General

Start time (UTC):	22:38:24
Start date (UTC):	26/03/2025
Path:	/tmp/aarch64.elf
Arguments:	/tmp/aarch64.elf
File size:	5706200 bytes
MD5 hash:	02e8e39e1b46472a60d128a6da84a2b8

File Activities

File Opened

File Deleted

File Read

File Written

File Moved

Directory Enumerated

Process Activities

Process Forked

Prctl Requested

Thread Sleep

System Activities

Query System Information (uname)

Network Activities

Socket Connecting

Chronological Activities

Analysis Process: aarch64.elf PID: 5492, Parent PID: 5488

General

Start time (UTC):	22:38:26
Start date (UTC):	26/03/2025
Path:	/tmp/aarch64.elf
Arguments:	-
File size:	5706200 bytes
MD5 hash:	02e8e39e1b46472a60d128a6da84a2b8

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 enumerate files and directories or may search in specific locations of a host or network share for certain information within a file system. Adversaries may use the information from File and Directory 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:	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 aarch64.elf

Overview

General Information

Detection

Signatures

Classification

General Information

Runtime Messages

Process Tree

Malware Threat Intel

Yara Signatures

Initial Sample

Memory Dumps

Suricata 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

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

/tmp/qemu-open.3ThlL8 (deleted)

/tmp/qemu-open.Dwvc68 (deleted)

/tmp/qemu-open.SsypP8 (deleted)

/tmp/qemu-open.yIKaX8 (deleted)

Static File Info

General

Static ELF Info

ELF header

Sections

Program Segments

Network Behavior

UDP Packets

DNS Queries

DNS Answers

System Behavior

Analysis Process: aarch64.elf PID: 5488, Parent PID: 5405

General

File Activities

File Opened

File Deleted

File Read

File Written

File Moved

Directory Enumerated

Process Activities

Process Forked

Prctl Requested

Thread Sleep

System Activities

Query System Information (uname)

Network Activities

Socket Connecting

Chronological Activities

Linux Analysis Report
aarch64.elf