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Linux Analysis Report
arm5.elf

Overview

General Information

Sample name:	arm5.elf
Analysis ID:	1644835
MD5:	bd951dc2d2a5b1e339267a79c4e96c82
SHA1:	6f94f0298bc7b9af86b04b79c5273e276c0e36bc
SHA256:	ce78ed6e7ccb04010f12f4b903fb7e8566b75c76cf8a0b29810ceb14beebada5
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)

Tries to connect to HTTP servers, but all servers are down (expired dropper behavior)

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

Classification

General Information

Joe Sandbox version:	42.0.0 Malachite
Analysis ID:	1644835
Start date and time:	2025-03-21 01:44:19 +01:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 4m 50s
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@0/0

Runtime Messages

Command:	/tmp/arm5.elf
PID:	6229
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: 6229, Parent: 6144, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/arm5.elf

arm5.elf New Fork (PID: 6234, Parent: 6229)

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: 13%

Source: /tmp/arm5.elf (PID: 6234)

Socket: 127.0.0.1:22448

Jump to behavior

Source: global traffic	TCP traffic: 192.168.2.23:43928 -> 91.189.91.42:443
Source: global traffic	TCP traffic: 192.168.2.23:42836 -> 91.189.91.43:443
Source: global traffic	TCP traffic: 192.168.2.23:42516 -> 109.202.202.202:80

Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.42
Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.43
Source: unknown	TCP traffic detected without corresponding DNS query: 109.202.202.202
Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.42
Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.43
Source: unknown	TCP traffic detected without corresponding DNS query: 109.202.202.202
Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.42

Source: unknown	Network traffic detected: HTTP traffic on port 43928 -> 443
Source: unknown	Network traffic detected: HTTP traffic on port 42836 -> 443

Source: ELF static info symbol of initial sample

.symtab present: no

Source: /tmp/arm5.elf (PID: 6229)	SIGKILL sent: pid: 1 (init), result: successful	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	SIGKILL sent: pid: 1335, result: successful	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	SIGKILL sent: pid: 1872, result: successful	Jump to behavior

Source: classification engine

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

Persistence and Installation Behavior

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

Source: /tmp/arm5.elf (PID: 6229)

File: /proc/6229/mounts

Jump to behavior

Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/1582/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/3088/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/230/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/110/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/231/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/111/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/232/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/1579/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/112/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/233/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/1699/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/113/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/234/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/1335/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/1698/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/114/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/235/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/1334/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/1576/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/2302/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/115/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/236/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/116/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/237/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/117/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/118/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/910/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/119/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/912/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/10/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/2307/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/11/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/918/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/12/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/13/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/14/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/15/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/16/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/17/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/18/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/1594/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/120/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/121/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/1349/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/1/maps	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/1/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/122/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/243/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/123/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/2/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/124/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/3/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/4/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/125/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/126/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/1344/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/1465/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/1586/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/127/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/6/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/248/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/128/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/249/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/1463/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/800/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/9/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/801/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/20/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/21/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/1900/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/22/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/23/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/24/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/25/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/26/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/27/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/28/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/29/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/491/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/250/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/130/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/251/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/252/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/132/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/253/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/254/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/255/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/256/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/1599/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/257/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/1477/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/379/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/258/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/1476/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/259/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/1475/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/936/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/30/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/2208/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/4506/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/35/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/1809/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/1494/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/260/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6229)	File opened: /proc/261/cmdline	Jump to behavior

Source: /tmp/arm5.elf (PID: 6229)

Queries kernel information via 'uname':

Jump to behavior

Source: arm5.elf, 6229.1.00007fe4100ac000.00007fe4100b3000.rw-.sdmp, arm5.elf, 6234.1.00007fe4100ac000.00007fe4100b3000.rw-.sdmp	Binary or memory string: !!a1gAWFxuAXsFWUgBRQAA!!a1gAWFxuAXsAWUgKRXgA!!a1gAWFxuAXsAWEgJR3IA!!a10CWFxuAHsGWVcWQHAA!!a10CWFxuAHsGWVcWQHUA!!aFwAWF9uA3sGW0gLRgAA!1aFwAWFlpG2QBW0gJTwAA1!qemu-arm2QBW0gJTwAA!
Source: arm5.elf, 6229.1.00007fff521a4000.00007fff521c5000.rw-.sdmp, arm5.elf, 6234.1.00007fff521a4000.00007fff521c5000.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, 6234.1.00007fe4100ac000.00007fe4100b3000.rw-.sdmp	Binary or memory string: vmware
Source: arm5.elf, 6229.1.00007fff521a4000.00007fff521c5000.rw-.sdmp	Binary or memory string: /tmp/qemu-open.PapRVb
Source: arm5.elf, 6229.1.00007fe4100ac000.00007fe4100b3000.rw-.sdmp, arm5.elf, 6234.1.00007fe4100ac000.00007fe4100b3000.rw-.sdmp	Binary or memory string: qemu-arm
Source: arm5.elf, 6229.1.00007fff521a4000.00007fff521c5000.rw-.sdmp	Binary or memory string: /V/tmp/qemu-open.PapRVb:U(
Source: arm5.elf, 6229.1.0000562f9e438000.0000562f9e586000.rw-.sdmp, arm5.elf, 6234.1.0000562f9e438000.0000562f9e586000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/arm
Source: arm5.elf, 6229.1.00007fff521a4000.00007fff521c5000.rw-.sdmp, arm5.elf, 6234.1.00007fff521a4000.00007fff521c5000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-arm
Source: arm5.elf, 6229.1.0000562f9e438000.0000562f9e586000.rw-.sdmp, arm5.elf, 6234.1.0000562f9e438000.0000562f9e586000.rw-.sdmp	Binary or memory string: /V!/etc/qemu-binfmt/arm
Source: arm5.elf, 6234.1.00007fff521a4000.00007fff521c5000.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 Encrypted Channel	Exfiltration Over Other Network Medium	Abuse Accessibility Features
Credentials	Domains	Default Accounts	Scheduled Task/Job	Boot or Logon Initialization Scripts	Boot or Logon Initialization Scripts	Rootkit	LSASS Memory	1 File and Directory Discovery	Remote Desktop Protocol	Data from Removable Media	1 Application Layer Protocol	Exfiltration Over Bluetooth	Network Denial of Service

Malware Configuration

⊘No configs have been found

Behavior Graph

Hide Legend

Legend:

Process
Signature
Created File
DNS/IP Info
Is Dropped
Number of created Files
Is malicious
Internet

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

Source	Detection	Scanner	Label	Link
arm5.elf	14%	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

⊘No contacted domains info

World Map of Contacted IPs

No. of IPs < 25%
25% < No. of IPs < 50%
50% < No. of IPs < 75%
75% < No. of IPs

Public IPs

IP	Domain	Country	ASN	ASN Name	Malicious
109.202.202.202	unknown	Switzerland	13030	INIT7CH	false
91.189.91.43	unknown	United Kingdom	41231	CANONICAL-ASGB	false
91.189.91.42	unknown	United Kingdom	41231	CANONICAL-ASGB	false

Joe Sandbox View / Context

IPs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
109.202.202.202	kpLwzBouH4.elf	Get hash	malicious	Unknown	Browse	ch.archive.ubuntu.com/ubuntu/pool/main/f/firefox/firefox_92.0%2bbuild3-0ubuntu0.20.04.1_amd64.deb
91.189.91.43	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	arm.elf	Get hash	malicious	Mirai	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	mips.elf	Get hash	malicious	Unknown	Browse
	linux_386.elf	Get hash	malicious	Chaos	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	linux_mipsel.elf	Get hash	malicious	Chaos	Browse
	linux_arm7.elf	Get hash	malicious	Chaos	Browse
91.189.91.42	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	arm.elf	Get hash	malicious	Mirai	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	mips.elf	Get hash	malicious	Unknown	Browse
	linux_386.elf	Get hash	malicious	Chaos	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	linux_mipsel.elf	Get hash	malicious	Chaos	Browse
	linux_arm7.elf	Get hash	malicious	Chaos	Browse

Domains

⊘No context

ASNs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
CANONICAL-ASGB	na.elf	Get hash	malicious	Prometei	Browse	91.189.91.42
	na.elf	Get hash	malicious	Prometei	Browse	91.189.91.42
	na.elf	Get hash	malicious	Prometei	Browse	91.189.91.42
	arm.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	na.elf	Get hash	malicious	Prometei	Browse	91.189.91.42
	mips.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	linux_386.elf	Get hash	malicious	Chaos	Browse	91.189.91.42
	na.elf	Get hash	malicious	Prometei	Browse	91.189.91.42
	linux_mipsel.elf	Get hash	malicious	Chaos	Browse	91.189.91.42
	linux_arm7.elf	Get hash	malicious	Chaos	Browse	91.189.91.42
CANONICAL-ASGB	na.elf	Get hash	malicious	Prometei	Browse	91.189.91.42
	na.elf	Get hash	malicious	Prometei	Browse	91.189.91.42
	na.elf	Get hash	malicious	Prometei	Browse	91.189.91.42
	arm.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	na.elf	Get hash	malicious	Prometei	Browse	91.189.91.42
	mips.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	linux_386.elf	Get hash	malicious	Chaos	Browse	91.189.91.42
	na.elf	Get hash	malicious	Prometei	Browse	91.189.91.42
	linux_mipsel.elf	Get hash	malicious	Chaos	Browse	91.189.91.42
	linux_arm7.elf	Get hash	malicious	Chaos	Browse	91.189.91.42
INIT7CH	na.elf	Get hash	malicious	Prometei	Browse	109.202.202.202
	na.elf	Get hash	malicious	Prometei	Browse	109.202.202.202
	na.elf	Get hash	malicious	Prometei	Browse	109.202.202.202
	arm.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	na.elf	Get hash	malicious	Prometei	Browse	109.202.202.202
	mips.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	linux_386.elf	Get hash	malicious	Chaos	Browse	109.202.202.202
	na.elf	Get hash	malicious	Prometei	Browse	109.202.202.202
	linux_mipsel.elf	Get hash	malicious	Chaos	Browse	109.202.202.202
	linux_arm7.elf	Get hash	malicious	Chaos	Browse	109.202.202.202

JA3 Fingerprints

⊘No context

Dropped Files

⊘No context

Created / dropped Files

/tmp/qemu-open.HIANNb (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.PapRVb (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.eRMGjf (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), dynamically linked, stripped
Entropy (8bit):	6.332388289864261
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	arm5.elf
File size:	576'396 bytes
MD5:	bd951dc2d2a5b1e339267a79c4e96c82
SHA1:	6f94f0298bc7b9af86b04b79c5273e276c0e36bc
SHA256:	ce78ed6e7ccb04010f12f4b903fb7e8566b75c76cf8a0b29810ceb14beebada5
SHA512:	46845536cee334a1d9864cf285e2b4a5fcc6dcb2adc9f833b34566f71cff7cf5983a80c6e064dd80817def3c428310e485c24f20141db08ea0db2866bc4a306f
SSDEEP:	12288:51E6t2q6gvh/GQClHCJZGr0EmKxR51RMwLHJlQWuNtIae4aI1z:51lvh/ylHCKd1RMwIW2Ial
TLSH:	2EC44B59A8419B96C1D02BBBBF1D934873131F38E2EFB1069D196F246B9FC1A0F7A501
File Content Preview:	.ELF..............(.....l...4...........4. ...(.....................................................................................\8...............................................@-..@............/..@-.,@...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:	575876
Section Header Size:	40
Number of Section Headers:	13
Header String Table Index:	12

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	0x7a13c	0x0	0x6	AX	0	8
.fini	PROGBITS	0x82204	0x7a204	0x14	0x0	0x6	AX	0	1
.rodata	PROGBITS	0x82218	0x7a218	0xeddc	0x0	0x2	A	0	8
.ARM.exidx	ARM_EXIDX	0x90ff4	0x88ff4	0xc8	0x0	0x82	AL	2	4
.init_array	INIT_ARRAY	0x990c0	0x890c0	0x4	0x0	0x3	WA	0	4
.fini_array	FINI_ARRAY	0x990c4	0x890c4	0x4	0x0	0x3	WA	0	4
.data.rel.ro	PROGBITS	0x990cc	0x890cc	0x35e8	0x0	0x3	WA	0	4
.got	PROGBITS	0x9c6b4	0x8c6b4	0x9c	0x4	0x3	WA	0	4
.data	PROGBITS	0x9c750	0x8c750	0x1cc	0x0	0x3	WA	0	8
.bss	NOBITS	0x9c920	0x8c91c	0x5544	0x0	0x3	WA	0	8
.shstrtab	STRTAB	0x0	0x8c91c	0x65	0x0	0x0		0	1

Program Segments

Type	Offset	Virtual Address	Physical Address	File Size	Memory Size	Entropy	Flags	Flags Description	Align	Section Mappings
DYNAMIC	0x88ff4	0x90ff4	0x90ff4	0xc8	0xc8	4.3623	0x4	R	0x4	.ARM.exidx
LOAD	0x0	0x8000	0x8000	0x890bc	0x890bc	6.3547	0x5	R E	0x8000	.init .text .fini .rodata .ARM.exidx
LOAD	0x890c0	0x990c0	0x990c0	0x385c	0x8da4	4.1700	0x6	RW	0x8000	.init_array .fini_array .data.rel.ro .got .data .bss
DYNAMIC	0x0	0x0	0x0	0x0	0x0	0.0000	0x7	RWE	0x4

Network Behavior

Download Network PCAP: filtered – full

Network Port Distribution

Total Packets: 7
• 443 (HTTPS)
• 80 (HTTP)

TCP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Mar 21, 2025 01:45:00.680764914 CET	43928	443	192.168.2.23	91.189.91.42
Mar 21, 2025 01:45:06.312467098 CET	42836	443	192.168.2.23	91.189.91.43
Mar 21, 2025 01:45:07.847807884 CET	42516	80	192.168.2.23	109.202.202.202
Mar 21, 2025 01:45:21.157984972 CET	43928	443	192.168.2.23	91.189.91.42
Mar 21, 2025 01:45:33.444343090 CET	42836	443	192.168.2.23	91.189.91.43
Mar 21, 2025 01:45:37.539695978 CET	42516	80	192.168.2.23	109.202.202.202
Mar 21, 2025 01:46:02.112464905 CET	43928	443	192.168.2.23	91.189.91.42

System Behavior

Analysis Process: arm5.elf PID: 6229, Parent PID: 6144

General

Start time (UTC):	00:45:01
Start date (UTC):	21/03/2025
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: 6234, Parent PID: 6229

General

Start time (UTC):	00:45:03
Start date (UTC):	21/03/2025
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 employ a known encryption algorithm to conceal command and control traffic rather than relying on any inherent protections provided by a communication protocol. Despite the use of a secure algorithm, these implementations may be vulnerable to reverse engineering if secret keys are encoded and/or generated within malware samples/configuration files.
Tactics:	Command and Control
Data Sources:	Network Traffic: Network Traffic Content
Platforms:	Linux, macOS, 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

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

Dropped Files

Domains

URLs

Domains and IPs

Contacted Domains

World Map of Contacted IPs

Public IPs

Joe Sandbox View / Context

IPs

Domains

ASNs

JA3 Fingerprints

Dropped Files

Created / dropped Files

/tmp/qemu-open.HIANNb (deleted)

/tmp/qemu-open.PapRVb (deleted)

/tmp/qemu-open.eRMGjf (deleted)

Static File Info

General

Static ELF Info

ELF header

Sections

Program Segments

Network Behavior

Network Port Distribution

TCP Packets

System Behavior

Analysis Process: arm5.elf PID: 6229, Parent PID: 6144

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: 6234, Parent PID: 6229

General

File Activities

File Opened

Process Activities

Linux Analysis Report
arm5.elf