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Linux Analysis Report
arm5.elf

Overview

General Information

Sample name:	arm5.elf
Analysis ID:	1642477
MD5:	f9ea4d8be652e259eacddf6f0e3295ba
SHA1:	16204fb85c258b8372d4d8d1d40768ee8decdbce
SHA256:	e31d5441833c0eb167ee8a9a614b20cc37dd13473d4bbc828594db450c79e4da
Tags:	elfuser-abuse_ch
Infos:

Detection

Score:	52
Range:	0 - 100

Signatures

Multi AV Scanner detection for submitted file

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

Enumerates processes within the "proc" file system

Sample has stripped symbol table

Sample listens on a socket

Sample tries to kill a process (SIGKILL)

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

Classification

General Information

Joe Sandbox version:	42.0.0 Malachite
Analysis ID:	1642477
Start date and time:	2025-03-19 03:59:51 +01:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 4m 33s
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:	mal52.troj.linELF@0/3@2/0

Runtime Messages

Command:	/tmp/arm5.elf
PID:	5435
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: 5435, Parent: 5356, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/arm5.elf

arm5.elf New Fork (PID: 5438, Parent: 5435)

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	Virustotal: Detection: 10%			Perma Link
Source: arm5.elf	ReversingLabs: Detection: 14%

Source: /tmp/arm5.elf (PID: 5438)

Socket: 127.0.0.1:22448

Jump to behavior

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

Source: global traffic

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

Source: ELF static info symbol of initial sample

.symtab present: no

Source: /tmp/arm5.elf (PID: 5435)	SIGKILL sent: pid: 1 (init), result: successful	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	SIGKILL sent: pid: 1411, result: successful	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	SIGKILL sent: pid: 2936, result: successful	Jump to behavior

Source: classification engine

Classification label: mal52.troj.linELF@0/3@2/0

Persistence and Installation Behavior

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

Source: /tmp/arm5.elf (PID: 5435)

File: /proc/5435/mounts

Jump to behavior

Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/5380/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/230/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/110/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/231/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/111/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/232/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/112/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/233/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/113/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/234/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/114/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/235/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/115/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/236/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/116/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/237/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/117/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/238/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/118/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/239/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/119/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/914/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/10/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/917/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/11/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/12/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/5273/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/13/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/14/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/15/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/16/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/17/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/18/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/19/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/240/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/3095/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/120/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/241/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/121/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/242/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/1/maps	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/1/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/122/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/243/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/2/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/123/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/244/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/3/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/124/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/245/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/1588/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/125/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/4/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/246/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/126/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/5/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/247/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/127/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/6/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/248/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/128/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/7/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/249/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/129/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/8/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/800/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/9/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/1906/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/802/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/803/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/3644/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/20/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/21/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/22/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/23/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/24/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/25/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/26/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/27/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/28/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/29/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/3420/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/1482/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/490/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/1480/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/250/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/371/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/130/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/251/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/131/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/252/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/132/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/253/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/254/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/1238/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/134/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/255/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/256/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/257/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/378/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/3413/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/258/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/259/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/1475/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 5435)	File opened: /proc/936/cmdline	Jump to behavior

Source: /tmp/arm5.elf (PID: 5435)

Queries kernel information via 'uname':

Jump to behavior

Source: arm5.elf, 5435.1.00007f9e1c03b000.00007f9e1c041000.rw-.sdmp, arm5.elf, 5438.1.00007f9e1c03b000.00007f9e1c041000.rw-.sdmp	Binary or memory string: !!a1gAWFxuAXsFWUgBRQAA!!a1gAWFxuAXsAWUgKRXgA!!a1gAWFxuAXsAWEgJR3IA!!a10CWFxuAHsGWVcWQHAA!!a10CWFxuAHsGWVcWQHUA!!aFwAWF9uA3sGW0gLRgAA!1aFwAWFlpG2QBW0gJTwAA1!qemu-arm2QBW0gJTwAA!
Source: arm5.elf, 5435.1.00007ffc86385000.00007ffc863a6000.rw-.sdmp, arm5.elf, 5438.1.00007ffc86385000.00007ffc863a6000.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, 5438.1.00007f9e1c03b000.00007f9e1c041000.rw-.sdmp	Binary or memory string: vmware
Source: arm5.elf, 5435.1.000055a473319000.000055a473467000.rw-.sdmp, arm5.elf, 5438.1.000055a473319000.000055a473467000.rw-.sdmp	Binary or memory string: U!/etc/qemu-binfmt/arm
Source: arm5.elf, 5435.1.00007ffc86385000.00007ffc863a6000.rw-.sdmp	Binary or memory string: /tmp/qemu-open.QvFL5b
Source: arm5.elf, 5435.1.00007f9e1c03b000.00007f9e1c041000.rw-.sdmp, arm5.elf, 5438.1.00007f9e1c03b000.00007f9e1c041000.rw-.sdmp	Binary or memory string: qemu-arm
Source: arm5.elf, 5435.1.000055a473319000.000055a473467000.rw-.sdmp, arm5.elf, 5438.1.000055a473319000.000055a473467000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/arm
Source: arm5.elf, 5435.1.00007ffc86385000.00007ffc863a6000.rw-.sdmp	Binary or memory string: U/tmp/qemu-open.QvFL5b:u
Source: arm5.elf, 5435.1.00007ffc86385000.00007ffc863a6000.rw-.sdmp, arm5.elf, 5438.1.00007ffc86385000.00007ffc863a6000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-arm
Source: arm5.elf, 5438.1.00007ffc86385000.00007ffc863a6000.rw-.sdmp	Binary or memory string: qemu: uncaught target signal 11 (Segmentation fault) - core dumped

Mitre Att&ck Matrix

Reconnaissance	Resource Development	Initial Access	Execution	Persistence	Privilege Escalation	Defense Evasion	Credential Access	Discovery	Lateral Movement	Collection	Command and Control	Exfiltration	Impact
Gather Victim Identity Information	Acquire Infrastructure	Valid Accounts	Windows Management Instrumentation	Path Interception	Path Interception	Direct Volume Access	1 OS Credential Dumping	11 Security Software Discovery	Remote Services	Data from Local System	1 Non-Application Layer Protocol	Exfiltration Over Other Network Medium	Abuse Accessibility Features
Credentials	Domains	Default Accounts	Scheduled Task/Job	Boot or Logon Initialization Scripts	Boot or Logon Initialization Scripts	Rootkit	LSASS Memory	1 File and Directory Discovery	Remote Desktop Protocol	Data from Removable Media	1 Application Layer Protocol	Exfiltration Over Bluetooth	Network Denial of Service

Malware Configuration

⊘No configs have been found

Behavior Graph

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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
arm5.elf	11%	Virustotal		Browse
arm5.elf	15%	ReversingLabs	Linux.Trojan.Mirai

Dropped Files

⊘No Antivirus matches

Domains

⊘No Antivirus matches

URLs

⊘No Antivirus matches

Domains and IPs

Download Network PCAP: filtered – full

Contacted Domains

Name	IP	Active	Malicious	Antivirus Detection	Reputation
daisy.ubuntu.com	162.213.35.25	true	false		high

World Map of Contacted IPs

⊘No contacted IP infos

Joe Sandbox View / Context

IPs

⊘No context

Domains

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
daisy.ubuntu.com	arm6.elf	Get hash	malicious	Unknown	Browse	162.213.35.25
	sh4.elf	Get hash	malicious	Unknown	Browse	162.213.35.25
	Federalx86Agent.elf	Get hash	malicious	Mirai	Browse	162.213.35.25
	FederalmpslAgent.elf	Get hash	malicious	Mirai	Browse	162.213.35.24
	mpsl.elf	Get hash	malicious	Unknown	Browse	162.213.35.24
	Federali686Agent.elf	Get hash	malicious	Mirai	Browse	162.213.35.24
	FederalmipsAgent.elf	Get hash	malicious	Mirai	Browse	162.213.35.25
	FederalppcAgent.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.QvFL5b (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.nieN7a (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.p7YR2a (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.

Static File Info

General

File type:	ELF 32-bit LSB executable, ARM, EABI4 version 1 (SYSV), statically linked, stripped
Entropy (8bit):	6.036000673026871
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	arm5.elf
File size:	111'372 bytes
MD5:	f9ea4d8be652e259eacddf6f0e3295ba
SHA1:	16204fb85c258b8372d4d8d1d40768ee8decdbce
SHA256:	e31d5441833c0eb167ee8a9a614b20cc37dd13473d4bbc828594db450c79e4da
SHA512:	fdcc2bbcd0c06af389d41ae468b1bb5dddd53ee6712a2a766b5f9bdd2b615a42651e7c730dfec2db9f37715fd4e0ac5aba2c7df5f10dc9bdf75b618ee35aa388
SSDEEP:	1536:D3nU0Oi3tVWSfQViM0Ml1gyYiSujRQn1YXmkZ8VHDpqoH/msIO0pJVmr/dmGYFV8:gri3toSrMlD1S4q/kZ8VFeOWJQdmUBJ
TLSH:	22B30896BC419F26C2D116BEFE1E428E33131FB8E3DE3102ED155B2477CAA5A0E7A451
File Content Preview:	.ELF..............(.....l...4...,.......4. ...(........p.....&...&..................................T...T...............................HI..........Q.td.............................@-..@............/..@-.,@...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:	110892
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	0x18e3c	0x0	0x6	AX	0	4
.fini	PROGBITS	0x20f04	0x18f04	0x14	0x0	0x6	AX	0	1
.rodata	PROGBITS	0x20f18	0x18f18	0x1774	0x0	0x2	A	0	8
.ARM.exidx	ARM_EXIDX	0x2268c	0x1a68c	0xc8	0x0	0x82	AL	2	4
.init_array	INIT_ARRAY	0x2b004	0x1b004	0x4	0x0	0x3	WA	0	4
.fini_array	FINI_ARRAY	0x2b008	0x1b008	0x4	0x0	0x3	WA	0	4
.got	PROGBITS	0x2b010	0x1b010	0x28	0x4	0x3	WA	0	4
.data	PROGBITS	0x2b038	0x1b038	0x9c	0x0	0x3	WA	0	4
.bss	NOBITS	0x2b0d8	0x1b0d4	0x4874	0x0	0x3	WA	0	8
.shstrtab	STRTAB	0x0	0x1b0d4	0x58	0x0	0x0		0	1

Program Segments

Type	Offset	Virtual Address	Physical Address	File Size	Memory Size	Entropy	Flags	Flags Description	Align	Section Mappings
EXIDX	0x1a68c	0x2268c	0x2268c	0xc8	0xc8	4.2819	0x4	R	0x4	.ARM.exidx
LOAD	0x0	0x8000	0x8000	0x1a754	0x1a754	6.1145	0x5	R E	0x8000	.init .text .fini .rodata .ARM.exidx
LOAD	0x1b004	0x2b004	0x2b004	0xd0	0x4948	3.5794	0x6	RW	0x8000	.init_array .fini_array .got .data .bss
GNU_STACK	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
Mar 19, 2025 04:00:37.775949955 CET	60134	53	192.168.2.13	1.1.1.1
Mar 19, 2025 04:00:37.776009083 CET	33206	53	192.168.2.13	1.1.1.1
Mar 19, 2025 04:00:37.782402992 CET	53	33206	1.1.1.1	192.168.2.13
Mar 19, 2025 04:00:37.784044981 CET	53	60134	1.1.1.1	192.168.2.13

DNS Queries

Timestamp	Source IP	Dest IP	Trans ID	OP Code	Name	Type	Class	DNS over HTTPS
Mar 19, 2025 04:00:37.775949955 CET	192.168.2.13	1.1.1.1	0x7f70	Standard query (0)	daisy.ubuntu.com	A (IP address)	IN (0x0001)	false
Mar 19, 2025 04:00:37.776009083 CET	192.168.2.13	1.1.1.1	0x97ae	Standard query (0)	daisy.ubuntu.com	28	IN (0x0001)	false

DNS Answers

Timestamp	Source IP	Dest IP	Trans ID	Reply Code	Name	CName	Address	Type	Class	DNS over HTTPS
Mar 19, 2025 04:00:37.784044981 CET	1.1.1.1	192.168.2.13	0x7f70	No error (0)	daisy.ubuntu.com		162.213.35.25	A (IP address)	IN (0x0001)	false
Mar 19, 2025 04:00:37.784044981 CET	1.1.1.1	192.168.2.13	0x7f70	No error (0)	daisy.ubuntu.com		162.213.35.24	A (IP address)	IN (0x0001)	false

System Behavior

Analysis Process: arm5.elf PID: 5435, Parent PID: 5356

General

Start time (UTC):	03:00:33
Start date (UTC):	19/03/2025
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

Signal Sent

Prctl Requested

Thread Sleep

System Activities

Query System Information (uname)

Network Activities

Socket Connecting

Chronological Activities

Analysis Process: arm5.elf PID: 5438, Parent PID: 5435

General

Start time (UTC):	03:00:35
Start date (UTC):	19/03/2025
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 attempt to get a listing of security software, configurations, defensive tools, and sensors that are installed on a system or in a cloud environment. This may include things such as firewall rules and anti-virus. Adversaries may use the information from Security Software Discovery during automated discovery to shape follow-on behaviors, including whether or not the adversary fully infects the target and/or attempts specific actions.
Tactics:	Discovery
Data Sources:	Command: Command Execution, Firewall: Firewall Enumeration, Firewall: Firewall Metadata, Process: OS API Execution, Process: Process Creation
Platforms:	Azure AD, Google Workspace, IaaS, Linux, macOS, Office 365, SaaS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may enumerate files and directories or may search in specific locations of a host or network share for certain information within a file system. Adversaries may use the information from File and Directory Discovery during automated discovery to shape follow-on behaviors, including whether or not the adversary fully infects the target and/or attempts specific actions.
Tactics:	Discovery
Data Sources:	Command: Command Execution, Process: OS API Execution, Process: Process Creation
Platforms:	Linux, macOS, Network, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may use an OSI non-application layer protocol for communication between host and C2 server or among infected hosts within a network. The list of possible protocols is extensive.Specific examples include use of network layer protocols, such as the Internet Control Message Protocol (ICMP), transport layer protocols, such as the User Datagram Protocol (UDP), session layer protocols, such as Socket Secure (SOCKS), as well as redirected/tunneled protocols, such as Serial over LAN (SOL).
Tactics:	Command and Control
Data Sources:	Network Traffic: Network Traffic Content, Network Traffic: Network Traffic Flow
Platforms:	Linux, macOS, Network, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may communicate using OSI application layer protocols to avoid detection/network filtering by blending in with existing traffic. Commands to the remote system, and often the results of those commands, will be embedded within the protocol traffic between the client and server.
Tactics:	Command and Control
Data Sources:	Network Traffic: Network Traffic Content, Network Traffic: Network Traffic Flow
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Behavior Section

Behavior Chronological

Disassembly

Uncategorized

Graph

Loading Joe Sandbox Report ...

Warning!

Linux Analysis Report 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.QvFL5b (deleted)

/tmp/qemu-open.nieN7a (deleted)

/tmp/qemu-open.p7YR2a (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: 5435, Parent PID: 5356

General

File Activities

File Opened

File Deleted

File Read

File Written

File Moved

Directory Enumerated

Process Activities

Process Forked

Signal Sent

Prctl Requested

Thread Sleep

System Activities

Query System Information (uname)

Network Activities

Socket Connecting

Chronological Activities

Analysis Process: arm5.elf PID: 5438, Parent PID: 5435

General

File Activities

Linux Analysis Report
arm5.elf