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Linux Analysis Report
arm.elf

Overview

General Information

Sample name:	arm.elf
Analysis ID:	1646954
MD5:	b273bb23fa10dceb2eeb4b44c873f412
SHA1:	10a979f0219644c9738641d08abd65e6a4be9bda
SHA256:	19959273b474356df250456bdb2e7a1e336db74c38e43c1764baf7a250dca466
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:	1646954
Start date and time:	2025-03-24 13:18:36 +01:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 4m 43s
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:	arm.elf
Detection:	MAL
Classification:	mal52.troj.linELF@0/4@2/0

Runtime Messages

Command:	/tmp/arm.elf
PID:	5478
Exit Code:	0
Exit Code Info:
Killed:	False
Standard Output:	For God so loved the world
Standard Error:

Process Tree

system is lnxubuntu20

arm.elf (PID: 5478, Parent: 5403, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/arm.elf

arm.elf New Fork (PID: 5485, Parent: 5478)

dash New Fork (PID: 5482, Parent: 3635)

rm (PID: 5482, Parent: 3635, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.54jY11Pvj2 /tmp/tmp.TdHXmcI7yM /tmp/tmp.6tqqoplSu1

dash New Fork (PID: 5483, Parent: 3635)

rm (PID: 5483, Parent: 3635, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.54jY11Pvj2 /tmp/tmp.TdHXmcI7yM /tmp/tmp.6tqqoplSu1

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/

Source: /tmp/arm.elf (PID: 5485)

Socket: 127.0.0.1:22448

Jump to behavior

Source: unknown	TCP traffic detected without corresponding DNS query: 34.243.160.129
Source: unknown	TCP traffic detected without corresponding DNS query: 34.243.160.129
Source: unknown	TCP traffic detected without corresponding DNS query: 185.125.190.26
Source: unknown	TCP traffic detected without corresponding DNS query: 185.125.190.26
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: arm.elf, 5478.1.00007f0d70033000.00007f0d7003d000.rw-.sdmp, arm.elf, 5485.1.00007f0d70033000.00007f0d7003d000.rw-.sdmp	String found in binary or memory: http://17365637265742070617373776F7264206D656D6F721/t/wget.sh
Source: arm.elf, 5478.1.00007f0d70033000.00007f0d7003d000.rw-.sdmp, arm.elf, 5485.1.00007f0d70033000.00007f0d7003d000.rw-.sdmp	String found in binary or memory: https://motd.ubuntu.com
Source: arm.elf, 5478.1.00007f0d70033000.00007f0d7003d000.rw-.sdmp, arm.elf, 5485.1.00007f0d70033000.00007f0d7003d000.rw-.sdmp	String found in binary or memory: https://motd.ubuntu.comhe

Source: unknown	Network traffic detected: HTTP traffic on port 46540 -> 443
Source: unknown	Network traffic detected: HTTP traffic on port 42466 -> 443
Source: unknown	Network traffic detected: HTTP traffic on port 443 -> 42466

Source: ELF static info symbol of initial sample

.symtab present: no

Source: /tmp/arm.elf (PID: 5478)

SIGKILL sent: pid: 3730, result: successful

Jump to behavior

Source: classification engine

Classification label: mal52.troj.linELF@0/4@2/0

Persistence and Installation Behavior

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

Source: /tmp/arm.elf (PID: 5478)

File: /proc/5478/mounts

Jump to behavior

Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/1583/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/2672/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/110/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/111/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/112/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/113/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/234/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/1577/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/114/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/235/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/115/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/116/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/117/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/118/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/119/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/3635/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/10/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/917/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/11/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/12/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/13/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/14/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/15/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/16/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/17/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/18/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/19/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/1593/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/240/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/120/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/3094/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/121/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/242/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/3406/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/1/maps	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/1/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/122/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/243/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/2/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/123/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/244/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/1589/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/3/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/124/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/245/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/1588/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/125/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/4/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/246/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/3402/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/126/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/5/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/247/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/127/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/6/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/248/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/128/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/7/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/249/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/8/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/129/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/800/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/9/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/801/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/803/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/20/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/806/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/21/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/807/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/928/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/22/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/23/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/24/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/25/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/26/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/27/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/28/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/29/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/3783/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/3420/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/490/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/250/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/130/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/251/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/131/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/252/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/132/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/253/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/254/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/255/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/135/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/256/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/1599/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/257/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/378/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/258/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/3412/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/259/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/30/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/35/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/1371/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/260/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/261/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/262/cmdline	Jump to behavior
Source: /tmp/arm.elf (PID: 5478)	File opened: /proc/142/cmdline	Jump to behavior

Source: /usr/bin/dash (PID: 5482)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.54jY11Pvj2 /tmp/tmp.TdHXmcI7yM /tmp/tmp.6tqqoplSu1			Jump to behavior
Source: /usr/bin/dash (PID: 5483)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.54jY11Pvj2 /tmp/tmp.TdHXmcI7yM /tmp/tmp.6tqqoplSu1			Jump to behavior

Source: /tmp/arm.elf (PID: 5478)

Queries kernel information via 'uname':

Jump to behavior

Source: arm.elf, 5478.1.00007ffe7d726000.00007ffe7d747000.rw-.sdmp	Binary or memory string: U/tmp/qemu-open.szSgkr:
Source: arm.elf, 5478.1.00007ffe7d726000.00007ffe7d747000.rw-.sdmp	Binary or memory string: /tmp/qemu-open.szSgkr
Source: arm.elf, 5478.1.00007f0d70033000.00007f0d7003d000.rw-.sdmp, arm.elf, 5485.1.00007f0d70033000.00007f0d7003d000.rw-.sdmp	Binary or memory string: qemu-arm)Zm6vnZ5U4mf8vApyWcDwXR44ZAkzslsN)x
Source: arm.elf, 5485.1.00007f0d70033000.00007f0d7003d000.rw-.sdmp	Binary or memory string: vmwarem
Source: arm.elf, 5485.1.00007f0d70033000.00007f0d7003d000.rw-.sdmp	Binary or memory string: vmware
Source: arm.elf, 5478.1.000055efb81dd000.000055efb834c000.rw-.sdmp, arm.elf, 5485.1.000055efb81dd000.000055efb834c000.rw-.sdmp	Binary or memory string: U!/etc/qemu-binfmt/arm
Source: arm.elf, 5478.1.00007f0d70033000.00007f0d7003d000.rw-.sdmp, arm.elf, 5485.1.00007f0d70033000.00007f0d7003d000.rw-.sdmp	Binary or memory string: qemu-arm
Source: arm.elf, 5478.1.00007ffe7d726000.00007ffe7d747000.rw-.sdmp, arm.elf, 5485.1.00007ffe7d726000.00007ffe7d747000.rw-.sdmp	Binary or memory string: x86_64/usr/bin/qemu-arm/tmp/arm.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/arm.elf
Source: arm.elf, 5478.1.000055efb81dd000.000055efb834c000.rw-.sdmp, arm.elf, 5485.1.000055efb81dd000.000055efb834c000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/arm
Source: arm.elf, 5478.1.00007ffe7d726000.00007ffe7d747000.rw-.sdmp, arm.elf, 5485.1.00007ffe7d726000.00007ffe7d747000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-arm
Source: arm.elf, 5485.1.00007ffe7d726000.00007ffe7d747000.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 Non-Application Layer Protocol	Exfiltration Over Bluetooth	Network Denial of Service
Email Addresses	DNS Server	Domain Accounts	At	Logon Script (Windows)	Logon Script (Windows)	Obfuscated Files or Information	Security Account Manager	Query Registry	SMB/Windows Admin Shares	Data from Network Shared Drive	2 Application Layer Protocol	Automated Exfiltration	Data Encrypted for Impact

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
arm.elf	18%	Virustotal		Browse
arm.elf	19%	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

URLs from Memory and Binaries

Name	Source	Malicious	Reputation
https://motd.ubuntu.com	arm.elf, 5478.1.00007f0d70033000.00007f0d7003d000.rw-.sdmp, arm.elf, 5485.1.00007f0d70033000.00007f0d7003d000.rw-.sdmp	false	high
https://motd.ubuntu.comhe	arm.elf, 5478.1.00007f0d70033000.00007f0d7003d000.rw-.sdmp, arm.elf, 5485.1.00007f0d70033000.00007f0d7003d000.rw-.sdmp	false	high
http://17365637265742070617373776F7264206D656D6F721/t/wget.sh	arm.elf, 5478.1.00007f0d70033000.00007f0d7003d000.rw-.sdmp, arm.elf, 5485.1.00007f0d70033000.00007f0d7003d000.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	Flag	ASN	ASN Name	Malicious
185.125.190.26	unknown	United Kingdom		41231	CANONICAL-ASGB	false
34.243.160.129	unknown	United States		16509	AMAZON-02US	false

Joe Sandbox View / Context

IPs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link
185.125.190.26	arm.elf	Get hash	malicious	Mirai	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	morte.x86.elf	Get hash	malicious	Okiru	Browse
	owari.arm6.elf	Get hash	malicious	Unknown	Browse
	arc.elf	Get hash	malicious	Mirai	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	x86.elf	Get hash	malicious	Mirai	Browse
	arm5.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	boatnet.arm6.elf	Get hash	malicious	Mirai	Browse
34.243.160.129	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	ppc.fkunigr.elf	Get hash	malicious	Mirai	Browse
	mips.elf	Get hash	malicious	Mirai	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	wget.elf	Get hash	malicious	Gafgyt, Mirai	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	miner.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	linux_mipsel_softfloat.elf	Get hash	malicious	Chaos	Browse

Domains

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
daisy.ubuntu.com	tftp.elf	Get hash	malicious	Unknown	Browse	162.213.35.25
	aarch64.elf	Get hash	malicious	Unknown	Browse	162.213.35.24
	g4za.arm5.elf	Get hash	malicious	Mirai	Browse	162.213.35.24
	g4za.arm6.elf	Get hash	malicious	Mirai	Browse	162.213.35.25
	.i.elf	Get hash	malicious	Unknown	Browse	162.213.35.25
	arm5.fkunigr.elf	Get hash	malicious	Mirai	Browse	162.213.35.24
	arm6.fkunigr.elf	Get hash	malicious	Mirai	Browse	162.213.35.24
	ppc.elf	Get hash	malicious	Unknown	Browse	162.213.35.24
	arm7.fkunigr.elf	Get hash	malicious	Mirai	Browse	162.213.35.25
	mips.fkunigr.elf	Get hash	malicious	Mirai	Browse	162.213.35.24

ASNs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
AMAZON-02US	arm7.elf	Get hash	malicious	Unknown	Browse	54.171.230.55
	tftp.elf	Get hash	malicious	Unknown	Browse	54.217.10.153
	na.elf	Get hash	malicious	Prometei	Browse	34.243.160.129
	na.elf	Get hash	malicious	Prometei	Browse	52.212.150.54
	8RGIkD2qeg.exe	Get hash	malicious	Lokibot	Browse	13.248.169.48
	na.elf	Get hash	malicious	Prometei	Browse	34.249.145.219
	na.elf	Get hash	malicious	Prometei	Browse	54.247.62.1
	na.elf	Get hash	malicious	Prometei	Browse	52.212.150.54
	mips.elf	Get hash	malicious	Unknown	Browse	54.171.230.55
	Fatura-03-2025.pdf	Get hash	malicious	Unknown	Browse	3.17.7.232
CANONICAL-ASGB	arm7.elf	Get hash	malicious	Unknown	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
	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
	x86.fkunigr.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	arm5.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	sh4.fkunigr.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	arm5.elf	Get hash	malicious	Mirai	Browse	91.189.91.42

JA3 Fingerprints

⊘No context

Dropped Files

⊘No context

Created / dropped Files

/tmp/qemu-open.JJIcwr (deleted)

Download File

Process:	/tmp/arm.elf
File Type:	ASCII text, with no line terminators
Category:	dropped
Size (bytes):	13
Entropy (8bit):	3.3927474104487847
Encrypted:	false
SSDEEP:	3:Tg7G:Tgy
MD5:	060C950602AE5DFAF583473721C0D328
SHA1:	91D13B439729088DC17F1E0519970D82C56F2B07
SHA-256:	F8D4586FDF6230A2D5F431EF44BABDF37F6D7CEDBB3560702B0DC8493DD44EE3
SHA-512:	000D50E0A5736B0AB3B1BF61F55911914808FA197365B10F61F24096E2959ADAC2C3FF0D9ED226AD99934093F9FDD1C7035A22EEB5091DF75402A0A26E7A84AC
Malicious:	false
Reputation:	moderate, very likely benign file
Preview:	/tmp/arm.elf.

/tmp/qemu-open.M8TWuo (deleted)

Download File

Process:	/tmp/arm.elf
File Type:	ASCII text, with no line terminators
Category:	dropped
Size (bytes):	13
Entropy (8bit):	3.3927474104487847
Encrypted:	false
SSDEEP:	3:Tg7G:Tgy
MD5:	060C950602AE5DFAF583473721C0D328
SHA1:	91D13B439729088DC17F1E0519970D82C56F2B07
SHA-256:	F8D4586FDF6230A2D5F431EF44BABDF37F6D7CEDBB3560702B0DC8493DD44EE3
SHA-512:	000D50E0A5736B0AB3B1BF61F55911914808FA197365B10F61F24096E2959ADAC2C3FF0D9ED226AD99934093F9FDD1C7035A22EEB5091DF75402A0A26E7A84AC
Malicious:	false
Reputation:	moderate, very likely benign file
Preview:	/tmp/arm.elf.

/tmp/qemu-open.szSgkr (deleted)

Download File

Process:	/tmp/arm.elf
File Type:	ASCII text, with no line terminators
Category:	dropped
Size (bytes):	13
Entropy (8bit):	3.3927474104487847
Encrypted:	false
SSDEEP:	3:Tg7G:Tgy
MD5:	060C950602AE5DFAF583473721C0D328
SHA1:	91D13B439729088DC17F1E0519970D82C56F2B07
SHA-256:	F8D4586FDF6230A2D5F431EF44BABDF37F6D7CEDBB3560702B0DC8493DD44EE3
SHA-512:	000D50E0A5736B0AB3B1BF61F55911914808FA197365B10F61F24096E2959ADAC2C3FF0D9ED226AD99934093F9FDD1C7035A22EEB5091DF75402A0A26E7A84AC
Malicious:	false
Reputation:	moderate, very likely benign file
Preview:	/tmp/arm.elf.

/tmp/qemu-open.tQgAPo (deleted)

Download File

Process:	/tmp/arm.elf
File Type:	ASCII text, with no line terminators
Category:	dropped
Size (bytes):	13
Entropy (8bit):	3.3927474104487847
Encrypted:	false
SSDEEP:	3:Tg7G:Tgy
MD5:	060C950602AE5DFAF583473721C0D328
SHA1:	91D13B439729088DC17F1E0519970D82C56F2B07
SHA-256:	F8D4586FDF6230A2D5F431EF44BABDF37F6D7CEDBB3560702B0DC8493DD44EE3
SHA-512:	000D50E0A5736B0AB3B1BF61F55911914808FA197365B10F61F24096E2959ADAC2C3FF0D9ED226AD99934093F9FDD1C7035A22EEB5091DF75402A0A26E7A84AC
Malicious:	false
Reputation:	moderate, very likely benign file
Preview:	/tmp/arm.elf.

Static File Info

General

File type:	ELF 32-bit LSB executable, ARM, version 1 (ARM), statically linked, stripped
Entropy (8bit):	6.104631250534213
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	arm.elf
File size:	79'516 bytes
MD5:	b273bb23fa10dceb2eeb4b44c873f412
SHA1:	10a979f0219644c9738641d08abd65e6a4be9bda
SHA256:	19959273b474356df250456bdb2e7a1e336db74c38e43c1764baf7a250dca466
SHA512:	f0e0942a27257f3f69206ca26f4beb3bb2427cb393e218ecf207df2dc9020d62772c6feb1b4177aabe8461e518c27c4d28994649004e2f9b9ff875f144239869
SSDEEP:	1536:jwgeEqGVJdzFCdxPacQuiOtmbeBkTMLzv8GaKZAZHAQF8HKrwaDTCvl:jJeEqGVJdzq2OtmbvMLzv8M2gQF8HYwR
TLSH:	96731946BC919A52C6C146BBFF1F428D3326639CE3EE7213DA259F21378B5660E3B141
File Content Preview:	.ELF...a..........(.........4....5......4. ...(......................1...1...............1...1...1.......h..........Q.td..................................-...L."....E..........0@-.\P...0....S.0...P@...0... ....R......0...0...........0... ....R..... 0....S

Static ELF Info

ELF header
Class:	ELF32
Data:	2's complement, little endian
Version:	1 (current)
Machine:	ARM
Version Number:	0x1
Type:	EXEC (Executable file)
OS/ABI:	ARM - ABI
ABI Version:	0
Entry Point Address:	0x8190
Flags:	0x202
ELF Header Size:	52
Program Header Offset:	52
Program Header Size:	32
Number of Program Headers:	3
Section Header Offset:	79116
Section Header Size:	40
Number of Section Headers:	10
Header String Table Index:	9

Sections

Name	Type	Address	Offset	Size	EntSize	Flags	Flags Description	Align
	NULL	0x0	0x0	0x0	0x0	0x0		0
.init	PROGBITS	0x8094	0x94	0x18	0x0	0x6	AX	4
.text	PROGBITS	0x80b0	0xb0	0x117bc	0x0	0x6	AX	16
.fini	PROGBITS	0x1986c	0x1186c	0x14	0x0	0x6	AX	4
.rodata	PROGBITS	0x19880	0x11880	0x1954	0x0	0x2	A	4
.ctors	PROGBITS	0x231d8	0x131d8	0x8	0x0	0x3	WA	4
.dtors	PROGBITS	0x231e0	0x131e0	0x8	0x0	0x3	WA	4
.data	PROGBITS	0x231ec	0x131ec	0x2e0	0x0	0x3	WA	4
.bss	NOBITS	0x234cc	0x134cc	0x65d8	0x0	0x3	WA	4
.shstrtab	STRTAB	0x0	0x134cc	0x3e	0x0	0x0		1

Program Segments

Type	Offset	Virtual Address	Physical Address	File Size	Memory Size	Entropy	Flags	Flags Description	Align	Section Mappings
LOAD	0x0	0x8000	0x8000	0x131d4	0x131d4	6.1235	0x5	R E	0x8000	.init .text .fini .rodata
LOAD	0x131d8	0x231d8	0x231d8	0x2f4	0x68cc	3.7645	0x6	RW	0x8000	.ctors .dtors .data .bss
GNU_STACK	0x0	0x0	0x0	0x0	0x0	0.0000	0x7	RWE	0x4

Network Behavior

Download Network PCAP: filtered – full

Network Port Distribution

Total Packets: 6
• 443 (HTTPS)
• 53 (DNS)

TCP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Mar 24, 2025 13:19:15.053944111 CET	42466	443	192.168.2.14	34.243.160.129
Mar 24, 2025 13:19:18.505043030 CET	42466	443	192.168.2.14	34.243.160.129
Mar 24, 2025 13:19:18.683365107 CET	443	42466	34.243.160.129	192.168.2.14
Mar 24, 2025 13:19:26.835839987 CET	46540	443	192.168.2.14	185.125.190.26
Mar 24, 2025 13:19:57.058931112 CET	46540	443	192.168.2.14	185.125.190.26

UDP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Mar 24, 2025 13:19:20.292851925 CET	34803	53	192.168.2.14	1.1.1.1
Mar 24, 2025 13:19:20.292851925 CET	41188	53	192.168.2.14	1.1.1.1
Mar 24, 2025 13:19:20.394742012 CET	53	34803	1.1.1.1	192.168.2.14
Mar 24, 2025 13:19:20.398423910 CET	53	41188	1.1.1.1	192.168.2.14

DNS Queries

Timestamp	Source IP	Dest IP	Trans ID	OP Code	Name	Type	Class	DNS over HTTPS
Mar 24, 2025 13:19:20.292851925 CET	192.168.2.14	1.1.1.1	0xdec4	Standard query (0)	daisy.ubuntu.com	A (IP address)	IN (0x0001)	false
Mar 24, 2025 13:19:20.292851925 CET	192.168.2.14	1.1.1.1	0x8f9a	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 24, 2025 13:19:20.394742012 CET	1.1.1.1	192.168.2.14	0xdec4	No error (0)	daisy.ubuntu.com		162.213.35.25	A (IP address)	IN (0x0001)	false
Mar 24, 2025 13:19:20.394742012 CET	1.1.1.1	192.168.2.14	0xdec4	No error (0)	daisy.ubuntu.com		162.213.35.24	A (IP address)	IN (0x0001)	false

System Behavior

Analysis Process: arm.elf PID: 5478, Parent PID: 5403

General

Start time (UTC):	12:19:15
Start date (UTC):	24/03/2025
Path:	/tmp/arm.elf
Arguments:	/tmp/arm.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: arm.elf PID: 5485, Parent PID: 5478

General

Start time (UTC):	12:19:18
Start date (UTC):	24/03/2025
Path:	/tmp/arm.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: 5482, Parent PID: 3635

General

Start time (UTC):	12:19:17
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: 5482, Parent PID: 3635

General

Start time (UTC):	12:19:17
Start date (UTC):	24/03/2025
Path:	/usr/bin/rm
Arguments:	rm -f /tmp/tmp.54jY11Pvj2 /tmp/tmp.TdHXmcI7yM /tmp/tmp.6tqqoplSu1
File size:	72056 bytes
MD5 hash:	aa2b5496fdbfd88e38791ab81f90b95b

File Activities

File Opened

File Deleted

File Read

Chronological Activities

Analysis Process: dash PID: 5483, Parent PID: 3635

General

Start time (UTC):	12:19:17
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: 5483, Parent PID: 3635

General

Start time (UTC):	12:19:17
Start date (UTC):	24/03/2025
Path:	/usr/bin/rm
Arguments:	rm -f /tmp/tmp.54jY11Pvj2 /tmp/tmp.TdHXmcI7yM /tmp/tmp.6tqqoplSu1
File size:	72056 bytes
MD5 hash:	aa2b5496fdbfd88e38791ab81f90b95b

Source: arm.elf	Virustotal: Detection: 18%			Perma Link
Source: arm.elf	ReversingLabs: Detection: 19%

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 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 arm.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

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.JJIcwr (deleted)

/tmp/qemu-open.M8TWuo (deleted)

/tmp/qemu-open.szSgkr (deleted)

/tmp/qemu-open.tQgAPo (deleted)

Static File Info

General

Static ELF Info

ELF header

Sections

Program Segments

Network Behavior

Network Port Distribution

TCP Packets

UDP Packets

DNS Queries

DNS Answers

System Behavior

Analysis Process: arm.elf PID: 5478, Parent PID: 5403

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

Linux Analysis Report
arm.elf