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Linux Analysis Report
arm5.elf

Overview

General Information

Sample name:	arm5.elf
Analysis ID:	1647479
MD5:	c828bbe0e6dae3c7d989ddff591cce38
SHA1:	6bc70af348c9ec7b182236fa21cc5342130ff7f6
SHA256:	c9e5b60a85265de303dc4325edb9aa697eafa6f6da9ea4de3eb3efcd061a38ff
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

Executes the "rm" command used to delete files or directories

Found strings indicative of a multi-platform dropper

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:	1647479
Start date and time:	2025-03-24 22:03:01 +01:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 4m 45s
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@0/4@0/0

Runtime Messages

Command:	/tmp/arm5.elf
PID:	6205
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: 6205, Parent: 6122, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/arm5.elf

arm5.elf New Fork (PID: 6212, Parent: 6205)

dash New Fork (PID: 6210, Parent: 4331)

rm (PID: 6210, Parent: 4331, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.Z4QEoZ4V7q /tmp/tmp.aRrxfACTNP /tmp/tmp.JmUlpagyfA

dash New Fork (PID: 6211, Parent: 4331)

rm (PID: 6211, Parent: 4331, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.Z4QEoZ4V7q /tmp/tmp.aRrxfACTNP /tmp/tmp.JmUlpagyfA

cleanup

String: /proc/%s/exe/proc/%s/cmdline/proc/%d/exe/proc/%d/cmdlinewgettftpcurlftp/usr/bin/usr/sbin/system/mnt/mtd/app/org/z/zbin/home/app/dvr/bin/duksan/userfs/mnt/app/usr/etc/dvr/main/usr/local/var/bin/tmp/sqfs/z/bin/dvr/mnt/mtd/zconf/gm/bin/home/process/lib/snap/usr/lib/X

Source: /tmp/arm5.elf (PID: 6212)

Socket: 127.0.0.1:22448

Jump to behavior

Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.42
Source: unknown	TCP traffic detected without corresponding DNS query: 54.171.230.55
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	TCP traffic detected without corresponding DNS query: 91.189.91.43

Source: arm5.elf, 6205.1.00007f1a700a3000.00007f1a700aa000.rw-.sdmp, arm5.elf, 6212.1.00007f1a700a3000.00007f1a700aa000.rw-.sdmp	String found in binary or memory: https://motd.ubuntu.com
Source: arm5.elf, 6205.1.00007f1a700a3000.00007f1a700aa000.rw-.sdmp, arm5.elf, 6212.1.00007f1a700a3000.00007f1a700aa000.rw-.sdmp	String found in binary or memory: https://motd.ubuntu.comhe

Source: unknown	Network traffic detected: HTTP traffic on port 443 -> 33606
Source: unknown	Network traffic detected: HTTP traffic on port 43928 -> 443
Source: unknown	Network traffic detected: HTTP traffic on port 33606 -> 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: 6205)

SIGKILL sent: pid: 4437, result: successful

Jump to behavior

Source: classification engine

Classification label: mal52.troj.linELF@0/4@0/0

Persistence and Installation Behavior

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

Source: /tmp/arm5.elf (PID: 6205)

File: /proc/6205/mounts

Jump to behavior

Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/1582/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/1582/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/3088/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/230/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/110/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/231/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/111/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/232/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/1579/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/1579/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/112/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/233/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/1699/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/1699/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/113/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/234/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/1335/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/1335/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/1698/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/1698/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/114/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/235/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/1334/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/1334/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/1576/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/1576/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/2302/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/2302/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/115/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/236/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/116/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/237/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/117/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/118/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/910/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/119/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/912/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/912/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/10/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/2307/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/2307/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/11/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/918/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/918/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/12/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/13/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/14/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/15/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/16/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/17/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/18/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/1594/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/1594/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/120/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/121/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/1349/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/1349/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/1/maps	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/1/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/1/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/122/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/243/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/123/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/2/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/124/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/3/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/4/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/125/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/126/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/1344/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/1344/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/1465/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/1465/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/1586/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/1586/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/127/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/6/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/248/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/128/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/249/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/1463/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/1463/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/800/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/800/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/9/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/801/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/801/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/20/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/21/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/1900/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/1900/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/22/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/23/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/24/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/25/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/26/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/27/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/28/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/29/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/491/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/491/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/250/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/130/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/251/cmdline	Jump to behavior
Source: /tmp/arm5.elf (PID: 6205)	File opened: /proc/252/cmdline	Jump to behavior

Source: /usr/bin/dash (PID: 6210)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.Z4QEoZ4V7q /tmp/tmp.aRrxfACTNP /tmp/tmp.JmUlpagyfA			Jump to behavior
Source: /usr/bin/dash (PID: 6211)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.Z4QEoZ4V7q /tmp/tmp.aRrxfACTNP /tmp/tmp.JmUlpagyfA			Jump to behavior

Source: /tmp/arm5.elf (PID: 6205)

Queries kernel information via 'uname':

Jump to behavior

Source: arm5.elf, 6205.1.00007fffb39ef000.00007fffb3a10000.rw-.sdmp, arm5.elf, 6212.1.00007fffb39ef000.00007fffb3a10000.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, 6205.1.00007f1a700a3000.00007f1a700aa000.rw-.sdmp, arm5.elf, 6212.1.00007f1a700a3000.00007f1a700aa000.rw-.sdmp	Binary or memory string: !!a1gAWFxuAXsFWUgBRQAA!!a1gAWFxuAXsAWUgKRXgA!!a1gAWFxuAXsAWEgJR3IA!!a10CWFxuAHsGWVcWQHAA!!a10CWFxuAHsGWVcWQHUA!!aFwAWF9uA3sGW0gLRgAA!1aFwAWFlpG2QBW0gJTwAA1!qemu-arm2QBW0gJTwAA!
Source: arm5.elf, 6212.1.00007f1a700a3000.00007f1a700aa000.rw-.sdmp	Binary or memory string: vmware
Source: arm5.elf, 6205.1.000055fa33ef3000.000055fa34041000.rw-.sdmp, arm5.elf, 6212.1.000055fa33ef3000.000055fa34041000.rw-.sdmp	Binary or memory string: U!/etc/qemu-binfmt/arm
Source: arm5.elf, 6205.1.00007f1a700a3000.00007f1a700aa000.rw-.sdmp, arm5.elf, 6212.1.00007f1a700a3000.00007f1a700aa000.rw-.sdmp	Binary or memory string: qemu-arm
Source: arm5.elf, 6205.1.00007fffb39ef000.00007fffb3a10000.rw-.sdmp	Binary or memory string: /tmp/qemu-open.sIqMuq
Source: arm5.elf, 6205.1.000055fa33ef3000.000055fa34041000.rw-.sdmp, arm5.elf, 6212.1.000055fa33ef3000.000055fa34041000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/arm
Source: arm5.elf, 6205.1.00007fffb39ef000.00007fffb3a10000.rw-.sdmp, arm5.elf, 6212.1.00007fffb39ef000.00007fffb3a10000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-arm
Source: arm5.elf, 6205.1.00007fffb39ef000.00007fffb3a10000.rw-.sdmp	Binary or memory string: U/tmp/qemu-open.sIqMuq:
Source: arm5.elf, 6212.1.00007fffb39ef000.00007fffb3a10000.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	1 Scripting	Valid Accounts	Windows Management Instrumentation	1 Scripting	Path Interception	1 File Deletion	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

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	16%	Virustotal		Browse
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

URLs from Memory and Binaries

Name	Source	Malicious	Antivirus Detection	Reputation
https://motd.ubuntu.com	arm5.elf, 6205.1.00007f1a700a3000.00007f1a700aa000.rw-.sdmp, arm5.elf, 6212.1.00007f1a700a3000.00007f1a700aa000.rw-.sdmp	false		high
https://motd.ubuntu.comhe	arm5.elf, 6205.1.00007f1a700a3000.00007f1a700aa000.rw-.sdmp, arm5.elf, 6212.1.00007f1a700a3000.00007f1a700aa000.rw-.sdmp	false		high

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
54.171.230.55	unknown	United States	16509	AMAZON-02US	false
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
54.171.230.55	na.elf	Get hash	malicious	Prometei	Browse
	sshd.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	ppc.elf	Get hash	malicious	Unknown	Browse
	mpsl.elf	Get hash	malicious	Unknown	Browse
	arm7.elf	Get hash	malicious	Unknown	Browse
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	sh4.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	arm.elf	Get hash	malicious	Mirai	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
91.189.91.42	sh4.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	arm.elf	Get hash	malicious	Mirai	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse

Domains

⊘No context

ASNs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
CANONICAL-ASGB	sh4.elf	Get hash	malicious	Unknown	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
	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
	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
CANONICAL-ASGB	sh4.elf	Get hash	malicious	Unknown	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
	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
	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
AMAZON-02US	na.elf	Get hash	malicious	Prometei	Browse	52.212.150.54
	https://schoolmngt.ubpages.com/managent/	Get hash	malicious	Unknown	Browse	18.238.80.20
	https://docsend.com/view/idquj8mxi5fphufc	Get hash	malicious	Unknown	Browse	108.138.106.104
	Acgsys#receipt0191.html	Get hash	malicious	HTMLPhisher, Invisible JS, Tycoon2FA	Browse	13.225.63.61
	https://8tf7eelab.cc.rs6.net	Get hash	malicious	Unknown	Browse	18.238.55.6
	Brave.exe	Get hash	malicious	Unknown	Browse	52.35.133.144
	na.elf	Get hash	malicious	Prometei	Browse	34.249.145.219
	na.elf	Get hash	malicious	Prometei	Browse	52.212.150.54
	https://www.bing.com/ck/a?!&&p=e81ff1b9f175bc97b5aba94538245134c97a0f2e284b6d1b7f4817cef43c829bJmltdHM9MTc0Mjc3NDQwMA&ptn=3&ver=2&hsh=4&fclid=19c568d0-da5e-6cab-0452-7d78db436d5e&u=a1aHR0cHM6Ly93d3cuZm90b3BvcmNlbGFuYS5jb20uYnIvbW9kZWxvcy1lc3BlY2lhaXMv&ntb=1	Get hash	malicious	HTMLPhisher, Invisible JS, Tycoon2FA	Browse	3.168.73.27
	na.elf	Get hash	malicious	Prometei	Browse	34.249.145.219
INIT7CH	sh4.elf	Get hash	malicious	Unknown	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
	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
	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

JA3 Fingerprints

⊘No context

Dropped Files

⊘No context

Created / dropped Files

/tmp/qemu-open.37mnio (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.DwSNnq (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.JDRGVm (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.sIqMuq (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):	6.313050856226031
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	arm5.elf
File size:	572'116 bytes
MD5:	c828bbe0e6dae3c7d989ddff591cce38
SHA1:	6bc70af348c9ec7b182236fa21cc5342130ff7f6
SHA256:	c9e5b60a85265de303dc4325edb9aa697eafa6f6da9ea4de3eb3efcd061a38ff
SHA512:	1c8cf90328159d7a6d52313f2368a4bd00d5a800d917719ffaef598e9f229b0962c6ff3358d489821aef2aea0e68475e913070918a8bab674091c6a3fa111e4c
SSDEEP:	12288:6RrkKRRtOonO5lJUwTHC3VmHrnEOKeRHKdphvJn0GqYaAkWMOLlG:6R05llTHCOEkKdpQGeAk5
TLSH:	03C43A59A8419B95D1D02BBBBF1D934873131F38E2EFB0069D196F246BAFC1A0F7A501
File Content Preview:	.ELF..............(.....l...4...........4. ...(..........s...........................................t...t..........................`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:	571596
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	0x78634	0x0	0x6	AX	0	8
.fini	PROGBITS	0x806fc	0x786fc	0x14	0x0	0x6	AX	0	1
.rodata	PROGBITS	0x80710	0x78710	0xeca8	0x0	0x2	A	0	8
.ARM.exidx	ARM_EXIDX	0x8f3b8	0x873b8	0xc8	0x0	0x82	AL	2	4
.init_array	INIT_ARRAY	0x90004	0x88004	0x4	0x0	0x3	WA	0	4
.fini_array	FINI_ARRAY	0x90008	0x88008	0x4	0x0	0x3	WA	0	4
.data.rel.ro	PROGBITS	0x90010	0x88010	0x35e8	0x0	0x3	WA	0	4
.got	PROGBITS	0x935f8	0x8b5f8	0x9c	0x4	0x3	WA	0	4
.data	PROGBITS	0x93698	0x8b698	0x1cc	0x0	0x3	WA	0	8
.bss	NOBITS	0x93868	0x8b864	0x5544	0x0	0x3	WA	0	8
.shstrtab	STRTAB	0x0	0x8b864	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	0x873b8	0x8f3b8	0x8f3b8	0xc8	0xc8	4.2891	0x4	R	0x4	.ARM.exidx
LOAD	0x0	0x8000	0x8000	0x87480	0x87480	6.3535	0x5	R E	0x8000	.init .text .fini .rodata .ARM.exidx
LOAD	0x88004	0x90004	0x90004	0x3860	0x8da8	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: 9
• 443 (HTTPS)
• 80 (HTTP)

TCP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Mar 24, 2025 22:03:39.760899067 CET	43928	443	192.168.2.23	91.189.91.42
Mar 24, 2025 22:03:42.251610994 CET	33606	443	192.168.2.23	54.171.230.55
Mar 24, 2025 22:03:42.469876051 CET	443	33606	54.171.230.55	192.168.2.23
Mar 24, 2025 22:03:45.136210918 CET	42836	443	192.168.2.23	91.189.91.43
Mar 24, 2025 22:03:46.672096968 CET	42516	80	192.168.2.23	109.202.202.202
Mar 24, 2025 22:04:00.494266987 CET	43928	443	192.168.2.23	91.189.91.42
Mar 24, 2025 22:04:10.732738972 CET	42836	443	192.168.2.23	91.189.91.43
Mar 24, 2025 22:04:16.875834942 CET	42516	80	192.168.2.23	109.202.202.202
Mar 24, 2025 22:04:41.448461056 CET	43928	443	192.168.2.23	91.189.91.42
Mar 24, 2025 22:05:01.925668955 CET	42836	443	192.168.2.23	91.189.91.43

System Behavior

Analysis Process: arm5.elf PID: 6205, Parent PID: 6122

General

Start time (UTC):	21:03:38
Start date (UTC):	24/03/2025
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: 6212, Parent PID: 6205

General

Start time (UTC):	21:03:41
Start date (UTC):	24/03/2025
Path:	/tmp/arm5.elf
Arguments:	-
File size:	4956856 bytes
MD5 hash:	5ebfcae4fe2471fcc5695c2394773ff1

File Activities

File Opened

Process Activities

Signal Sent

Thread Sleep

Network Activities

Socket Listening

Chronological Activities

Analysis Process: dash PID: 6210, Parent PID: 4331

General

Start time (UTC):	21:03:41
Start date (UTC):	24/03/2025
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Process Activities

Process Overlayed (Exec)

Chronological Activities

Analysis Process: rm PID: 6210, Parent PID: 4331

General

Start time (UTC):	21:03:41
Start date (UTC):	24/03/2025
Path:	/usr/bin/rm
Arguments:	rm -f /tmp/tmp.Z4QEoZ4V7q /tmp/tmp.aRrxfACTNP /tmp/tmp.JmUlpagyfA
File size:	72056 bytes
MD5 hash:	aa2b5496fdbfd88e38791ab81f90b95b

File Activities

File Opened

File Deleted

File Read

Chronological Activities

Analysis Process: dash PID: 6211, Parent PID: 4331

General

Start time (UTC):	21:03:41
Start date (UTC):	24/03/2025
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Process Activities

Process Overlayed (Exec)

Chronological Activities

Analysis Process: rm PID: 6211, Parent PID: 4331

General

Start time (UTC):	21:03:41
Start date (UTC):	24/03/2025
Path:	/usr/bin/rm
Arguments:	rm -f /tmp/tmp.Z4QEoZ4V7q /tmp/tmp.aRrxfACTNP /tmp/tmp.JmUlpagyfA
File size:	72056 bytes
MD5 hash:	aa2b5496fdbfd88e38791ab81f90b95b

Source: arm5.elf	Virustotal: Detection: 15%			Perma Link
Source: arm5.elf	ReversingLabs: Detection: 13%

Description:	This technique has been deprecated. Please use Command and Scripting Interpreter where appropriate.
Tactics:	Defense Evasion, Execution
Data Sources:
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may delete files left behind by the actions of their intrusion activity. Malware, tools, or other non-native files dropped or created on a system by an adversary (ex: Ingress Tool Transfer ) may leave traces to indicate to what was done within a network and how. Removal of these files can occur during an intrusion, or as part of a post-intrusion process to minimize the adversary's footprint.
Tactics:	Defense Evasion
Data Sources:	Command: Command Execution, File: File Deletion
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

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

Spreading

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

URLs from Memory and Binaries

World Map of Contacted IPs

Public IPs

Joe Sandbox View / Context

IPs

Domains

ASNs

JA3 Fingerprints

Dropped Files

Created / dropped Files

/tmp/qemu-open.37mnio (deleted)

/tmp/qemu-open.DwSNnq (deleted)

/tmp/qemu-open.JDRGVm (deleted)

/tmp/qemu-open.sIqMuq (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: 6205, Parent PID: 6122

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

Linux Analysis Report
arm5.elf