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Linux Analysis Report
arm7.elf

Overview

General Information

Sample name:	arm7.elf
Analysis ID:	1640382
MD5:	654cf0156f303d83cb869a0e9ea28628
SHA1:	9116da9db4ae19970e92352d5a5e0219164d9a96
SHA256:	ef5abd557acb92cc93d0d0afd6d193606c258a26bc3fceed12e2087b1f62c8b6
Tags:	elfuser-abuse_ch
Infos:

Detection

Mirai

Score:	60
Range:	0 - 100

Signatures

Multi AV Scanner detection for submitted file

Yara detected Mirai

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

Sample has stripped symbol table

Sample listens on a socket

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:	1640382
Start date and time:	2025-03-17 09:17:11 +01:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 4m 28s
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:	arm7.elf
Detection:	MAL
Classification:	mal60.troj.linELF@0/3@2/0

Runtime Messages

Command:	/tmp/arm7.elf
PID:	5425
Exit Code:	0
Exit Code Info:
Killed:	False
Standard Output:	For God so loved the world
Standard Error:

Process Tree

system is lnxubuntu20

dash New Fork (PID: 5412, Parent: 3585)

rm (PID: 5412, Parent: 3585, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.5KUNi0Rg3b /tmp/tmp.acxLpbu0FK /tmp/tmp.NWulJLxprM

dash New Fork (PID: 5413, Parent: 3585)

rm (PID: 5413, Parent: 3585, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.5KUNi0Rg3b /tmp/tmp.acxLpbu0FK /tmp/tmp.NWulJLxprM

arm7.elf (PID: 5425, Parent: 5348, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/arm7.elf

arm7.elf New Fork (PID: 5428, Parent: 5425)

cleanup

Malware Threat Intel

Provided by

Name	Description	Attribution	Blogpost URLs	Link
Mirai	Mirai is one of the first significant botnets targeting exposed networking devices running Linux. Found in August 2016 by MalwareMustDie, its name means "future" in Japanese. Nowadays it targets a wide range of networked embedded devices such as IP cameras, home routers (many vendors involved), and other IoT devices. Since the source code was published on "Hack Forums" many variants of the Mirai family appeared, infecting mostly home networks all around the world.	No Attribution	http://osint.bambenekconsulting.com/feeds/ http://www.simonroses.com/2016/10/mirai-ddos-botnet-source-code-binary-analysis/ https://blog.malwaremustdie.org/2020/02/mmd-0065-2021-linuxmirai-fbot-re.html https://blog.netlab.360.com/another-lilin-dvr-0-day-being-used-to-spread-mirai-en/ https://blog.netlab.360.com/mirai_ptea-botnet-is-exploiting-undisclosed-kguard-dvr-vulnerability-en/	https://malpedia.caad.fkie.fraunhofer.de/details/elf.mirai

Yara Signatures

Initial Sample

Source	Rule	Description	Author	Strings
arm7.elf	JoeSecurity_Mirai_8	Yara detected Mirai	Joe Security

Memory Dumps

Source	Rule	Description	Author	Strings
5425.1.00007fad28017000.00007fad280a1000.r-x.sdmp	JoeSecurity_Mirai_8	Yara detected Mirai	Joe Security
5428.1.00007fad28017000.00007fad280a1000.r-x.sdmp	JoeSecurity_Mirai_8	Yara detected Mirai	Joe Security

Suricata Signatures

⊘No Suricata rule has matched

Joe Sandbox Signatures

• AV Detection
• Networking
• System Summary
• Persistence and Installation Behavior
• Malware Analysis System Evasion
• Stealing of Sensitive Information
• Remote Access Functionality

Click to jump to signature section

Show All Signature Results

AV Detection

Multi AV Scanner detection for submitted file

Source: arm7.elf

ReversingLabs: Detection: 16%

Source: /tmp/arm7.elf (PID: 5428)

Socket: 127.0.0.1:22448

Jump to behavior

Source: global traffic

TCP traffic: 192.168.2.13:48202 -> 185.125.190.26:443

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: arm7.elf, 5425.1.00007fad280ad000.00007fad280b8000.rw-.sdmp, arm7.elf, 5428.1.00007fad280ad000.00007fad280b8000.rw-.sdmp

String found in binary or memory: http://17365637265742070617373776F7264206D656D6F721/t/wget.sh

Source: unknown

Network traffic detected: HTTP traffic on port 48202 -> 443

Source: ELF static info symbol of initial sample

.symtab present: no

Source: classification engine

Classification label: mal60.troj.linELF@0/3@2/0

Persistence and Installation Behavior

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

Source: /tmp/arm7.elf (PID: 5425)

File: /proc/5425/mounts

Jump to behavior

Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/5265/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/5265/maps	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/230/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/110/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/231/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/3759/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/3759/maps	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/111/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/232/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/112/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/233/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/113/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/234/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/114/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/235/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/115/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/236/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/116/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/237/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/117/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/238/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/118/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/239/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/119/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/3632/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/3632/maps	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/914/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/914/maps	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/10/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/917/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/917/maps	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/11/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/12/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/13/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/14/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/15/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/16/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/17/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/18/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/19/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/240/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/3095/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/3095/maps	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/120/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/241/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/121/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/242/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/1/maps	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/1/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/1/maps	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/122/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/243/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/2/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/123/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/244/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/3/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/124/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/245/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/1588/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/1588/maps	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/125/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/4/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/246/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/126/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/5/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/247/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/127/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/6/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/248/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/128/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/7/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/249/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/129/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/8/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/800/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/800/maps	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/9/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/1906/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/1906/maps	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/802/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/802/maps	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/803/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/803/maps	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/20/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/21/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/22/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/23/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/24/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/25/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/26/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/27/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/28/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/29/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/3420/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/3420/maps	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/1482/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/1482/maps	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/490/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/490/maps	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/1480/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/1480/maps	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/250/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/371/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/130/cmdline	Jump to behavior
Source: /tmp/arm7.elf (PID: 5425)	File opened: /proc/251/cmdline	Jump to behavior

Source: /usr/bin/dash (PID: 5412)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.5KUNi0Rg3b /tmp/tmp.acxLpbu0FK /tmp/tmp.NWulJLxprM			Jump to behavior
Source: /usr/bin/dash (PID: 5413)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.5KUNi0Rg3b /tmp/tmp.acxLpbu0FK /tmp/tmp.NWulJLxprM			Jump to behavior

Source: /tmp/arm7.elf (PID: 5425)

Queries kernel information via 'uname':

Jump to behavior

Source: arm7.elf, 5428.1.00007fad280ad000.00007fad280b8000.rw-.sdmp	Binary or memory string: vmwarem
Source: arm7.elf, 5428.1.00007fad280ad000.00007fad280b8000.rw-.sdmp	Binary or memory string: vmware
Source: arm7.elf, 5425.1.00007fad280ad000.00007fad280b8000.rw-.sdmp, arm7.elf, 5428.1.00007fad280ad000.00007fad280b8000.rw-.sdmp	Binary or memory string: qemu-arm
Source: arm7.elf, 5425.1.00007ffc752da000.00007ffc752fb000.rw-.sdmp	Binary or memory string: V/tmp/qemu-open.zWSIgo:
Source: arm7.elf, 5428.1.00007ffc752da000.00007ffc752fb000.rw-.sdmp	Binary or memory string: Vqemu: uncaught target signal 11 (Segmentation fault) - core dumped
Source: arm7.elf, 5425.1.000056194face000.000056194fc1d000.rw-.sdmp, arm7.elf, 5428.1.000056194face000.000056194fc1d000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/arm
Source: arm7.elf, 5425.1.00007ffc752da000.00007ffc752fb000.rw-.sdmp, arm7.elf, 5428.1.00007ffc752da000.00007ffc752fb000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-arm
Source: arm7.elf, 5425.1.000056194face000.000056194fc1d000.rw-.sdmp, arm7.elf, 5428.1.000056194face000.000056194fc1d000.rw-.sdmp	Binary or memory string: V!/etc/qemu-binfmt/arm
Source: arm7.elf, 5425.1.00007ffc752da000.00007ffc752fb000.rw-.sdmp	Binary or memory string: /tmp/qemu-open.zWSIgo
Source: arm7.elf, 5425.1.00007ffc752da000.00007ffc752fb000.rw-.sdmp, arm7.elf, 5428.1.00007ffc752da000.00007ffc752fb000.rw-.sdmp	Binary or memory string: x86_64/usr/bin/qemu-arm/tmp/arm7.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/arm7.elf
Source: arm7.elf, 5425.1.00007fad280ad000.00007fad280b8000.rw-.sdmp, arm7.elf, 5428.1.00007fad280ad000.00007fad280b8000.rw-.sdmp	Binary or memory string: qemu-arm)Zm6vnZ5U4mf8vApyWcDwXR44ZAkzslsN)lI
Source: arm7.elf, 5428.1.00007ffc752da000.00007ffc752fb000.rw-.sdmp	Binary or memory string: qemu: uncaught target signal 11 (Segmentation fault) - core dumped

Stealing of Sensitive Information

Yara detected Mirai

Source: Yara match	File source: arm7.elf, type: SAMPLE
Source: Yara match	File source: 5425.1.00007fad28017000.00007fad280a1000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: 5428.1.00007fad28017000.00007fad280a1000.r-x.sdmp, type: MEMORY

Remote Access Functionality

Yara detected Mirai

Source: Yara match	File source: arm7.elf, type: SAMPLE
Source: Yara match	File source: 5425.1.00007fad28017000.00007fad280a1000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: 5428.1.00007fad28017000.00007fad280a1000.r-x.sdmp, type: MEMORY

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	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
arm7.elf	17%	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	162.213.35.24	true	false		high

URLs from Memory and Binaries

Name	Source	Malicious	Antivirus Detection	Reputation
http://17365637265742070617373776F7264206D656D6F721/t/wget.sh	arm7.elf, 5425.1.00007fad280ad000.00007fad280b8000.rw-.sdmp, arm7.elf, 5428.1.00007fad280ad000.00007fad280b8000.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

Joe Sandbox View / Context

IPs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link
185.125.190.26	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	arm6.elf	Get hash	malicious	Mirai	Browse
	rebirth.i686.elf	Get hash	malicious	Gafgyt	Browse
	rebirth.sh4.elf	Get hash	malicious	Gafgyt	Browse
	boatnet.mips.elf	Get hash	malicious	Mirai	Browse
	boatnet.mpsl.elf	Get hash	malicious	Mirai	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	.i.elf	Get hash	malicious	Unknown	Browse

Domains

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
daisy.ubuntu.com	hgfs.ppc.elf	Get hash	malicious	Unknown	Browse	162.213.35.25
	hgfs.arm.elf	Get hash	malicious	Unknown	Browse	162.213.35.25
	hgfs.x86.elf	Get hash	malicious	Unknown	Browse	162.213.35.24
	arm5.elf	Get hash	malicious	Unknown	Browse	162.213.35.24
	rebirth.x86.elf	Get hash	malicious	Gafgyt	Browse	162.213.35.25
	rebirth.arm6.elf	Get hash	malicious	Gafgyt	Browse	162.213.35.24
	rebirth.spc.elf	Get hash	malicious	Gafgyt	Browse	162.213.35.24
	rebirth.arm5.elf	Get hash	malicious	Gafgyt	Browse	162.213.35.24
	rebirth.arm4t.elf	Get hash	malicious	Gafgyt	Browse	162.213.35.24
	rebirth.mpsl.elf	Get hash	malicious	Gafgyt	Browse	162.213.35.25

ASNs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
CANONICAL-ASGB	sshd.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
	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
	hgfs.arm7.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	na.elf	Get hash	malicious	Prometei	Browse	91.189.91.42
	hgfs.arm6.elf	Get hash	malicious	Unknown	Browse	91.189.91.42

JA3 Fingerprints

⊘No context

Dropped Files

⊘No context

Created / dropped Files

/tmp/qemu-open.arwSwo (deleted)

Download File

Process:	/tmp/arm7.elf
File Type:	data
Category:	dropped
Size (bytes):	14
Entropy (8bit):	3.521640636343319
Encrypted:	false
SSDEEP:	3:TgiLG:TgiC
MD5:	451AC90F7FA61D0393D6A5A02158D369
SHA1:	5A7D458802462B80F94A9CDA24E2C877437A8E34
SHA-256:	E2D543300D643CEF7698E750F74E8499993E346EF765FA2061EB5DFAF8D77E48
SHA-512:	EF1D000F5B8BB5AFD4F6CB347FBE0FA0E97608B8C3839B6B44CB9828E5522396B334AE37148FCD2064A423B3DDD0C8874EF7019023A84B36E3893E50353F06FE
Malicious:	false
Reputation:	moderate, very likely benign file
Preview:	/tmp/arm7.elf.

/tmp/qemu-open.wu0k1n (deleted)

Download File

Process:	/tmp/arm7.elf
File Type:	data
Category:	dropped
Size (bytes):	14
Entropy (8bit):	3.521640636343319
Encrypted:	false
SSDEEP:	3:TgiLG:TgiC
MD5:	451AC90F7FA61D0393D6A5A02158D369
SHA1:	5A7D458802462B80F94A9CDA24E2C877437A8E34
SHA-256:	E2D543300D643CEF7698E750F74E8499993E346EF765FA2061EB5DFAF8D77E48
SHA-512:	EF1D000F5B8BB5AFD4F6CB347FBE0FA0E97608B8C3839B6B44CB9828E5522396B334AE37148FCD2064A423B3DDD0C8874EF7019023A84B36E3893E50353F06FE
Malicious:	false
Reputation:	moderate, very likely benign file
Preview:	/tmp/arm7.elf.

/tmp/qemu-open.zWSIgo (deleted)

Download File

Process:	/tmp/arm7.elf
File Type:	ASCII text
Category:	dropped
Size (bytes):	355
Entropy (8bit):	3.826426742343223
Encrypted:	false
SSDEEP:	6:BVFYgceFXThc6j/VKaceFXThDqY/V/3VVyAb/rVmsVot/VOArB/VH:G9e3z4Xe3DquVIAbyl
MD5:	476453285118DA1808DD1B67F16D89E8
SHA1:	48DFFDF87F6213E0CEC1F6FC5D04EE849CF6CDAB
SHA-256:	A362199FBCA8D9D54398818A39AF74AB9C9361B6A44F657E835D6557871212AC
SHA-512:	C8BEA04DB13793EA7E016359C504F2E9D403F759737D3D056DE1FFFC33BEF91DC125FA289D5FB8334249AC9E5128AE42ECBB65BA29EBA2AF936D71E199EC668A
Malicious:	false
Reputation:	low
Preview:	8000-92000 r-xp 00000000 fd:00 531567 /tmp/arm7.elf.99000-9e000 rw-p 00089000 fd:00 531567 /tmp/arm7.elf.9e000-a9000 rw-p 00000000 00:00 0 .ff7ee000-ff7ef000 r--p 00000000 fd:00 793309 /usr/lib/x86_64-linux-gnu/libm-2.31.so.ff7ef000-ff7f0000 ---p 00000000 00:00 0 .ff7f0000-ffff0000 rw-p 00000000 00:00 0 [stack].

Static File Info

General

File type:	ELF 32-bit LSB executable, ARM, EABI4 version 1 (SYSV), statically linked, stripped
Entropy (8bit):	6.332694370209304
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	arm7.elf
File size:	579'104 bytes
MD5:	654cf0156f303d83cb869a0e9ea28628
SHA1:	9116da9db4ae19970e92352d5a5e0219164d9a96
SHA256:	ef5abd557acb92cc93d0d0afd6d193606c258a26bc3fceed12e2087b1f62c8b6
SHA512:	99977d8ca69246fd42f569a4b26bc82b5b589a49ef238009a755cf71aae0ab482851c51efe24221279a4e60bf90d9ab2301ac03a53bac84213f9261ebb4e7009
SSDEEP:	12288:K921QQtL6OaixKWs/HCtXAb49EOK3RGS7oLAaMTOGXNvz+Javqr7WjwaaTaN1nHF:K92KixC/HC6B8S7oRGXVMm
TLSH:	A5C44A59A8419B95D1C02BBBFF1D934873131B38E2EFB1069D196B246BDBC1B0F7A502
File Content Preview:	.ELF..............(.........4...........4. ...(........p\|...\|...\|...(...(...........................................................\|:..4...........................................Q.td..................................-...L..................@-.,@...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:	UNIX - System V
ABI Version:	0
Entry Point Address:	0x8194
Flags:	0x4000002
ELF Header Size:	52
Program Header Offset:	52
Program Header Size:	32
Number of Program Headers:	5
Section Header Offset:	578464
Section Header Size:	40
Number of Section Headers:	16
Header String Table Index:	15

Sections

Name	Type	Address	Offset	Size	EntSize	Flags	Flags Description	Link	Align
	NULL	0x0	0x0	0x0	0x0	0x0		0	0
.init	PROGBITS	0x80d4	0xd4	0x10	0x0	0x6	AX	0	4
.text	PROGBITS	0x80f0	0xf0	0x7a2a4	0x0	0x6	AX	0	16
.fini	PROGBITS	0x82394	0x7a394	0x10	0x0	0x6	AX	0	4
.rodata	PROGBITS	0x823a8	0x7a3a8	0xf3bc	0x0	0x2	A	0	8
.ARM.extab	PROGBITS	0x91764	0x89764	0x18	0x0	0x2	A	0	4
.ARM.exidx	ARM_EXIDX	0x9177c	0x8977c	0x128	0x0	0x82	AL	2	4
.eh_frame	PROGBITS	0x998a4	0x898a4	0x4	0x0	0x3	WA	0	4
.tbss	NOBITS	0x998a8	0x898a8	0x8	0x0	0x403	WAT	0	4
.init_array	INIT_ARRAY	0x998a8	0x898a8	0x4	0x0	0x3	WA	0	4
.fini_array	FINI_ARRAY	0x998ac	0x898ac	0x4	0x0	0x3	WA	0	4
.data.rel.ro	PROGBITS	0x998b4	0x898b4	0x3600	0x0	0x3	WA	0	4
.got	PROGBITS	0x9ceb4	0x8ceb4	0x12c	0x4	0x3	WA	0	4
.data	PROGBITS	0x9cfe0	0x8cfe0	0x340	0x0	0x3	WA	0	4
.bss	NOBITS	0x9d320	0x8d320	0x79b8	0x0	0x3	WA	0	8
.shstrtab	STRTAB	0x0	0x8d320	0x80	0x0	0x0		0	1

Program Segments

Type	Offset	Virtual Address	Physical Address	File Size	Memory Size	Entropy	Flags	Flags Description	Align	Section Mappings
EXIDX	0x8977c	0x9177c	0x9177c	0x128	0x128	4.5687	0x4	R	0x4	.ARM.exidx
LOAD	0x0	0x8000	0x8000	0x898a4	0x898a4	6.3568	0x5	R E	0x8000	.init .text .fini .rodata .ARM.extab .ARM.exidx
LOAD	0x898a4	0x998a4	0x998a4	0x3a7c	0xb434	4.1798	0x6	RW	0x8000	.eh_frame .tbss .init_array .fini_array .data.rel.ro .got .data .bss
TLS	0x898a8	0x998a8	0x998a8	0x0	0x8	0.0000	0x4	R	0x4	.tbss
GNU_STACK	0x0	0x0	0x0	0x0	0x0	0.0000	0x7	RWE	0x4

Network Behavior

Download Network PCAP: filtered – full

Network Port Distribution

Total Packets: 4
• 443 (HTTPS)
• 53 (DNS)

TCP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Mar 17, 2025 09:18:03.091483116 CET	48202	443	192.168.2.13	185.125.190.26
Mar 17, 2025 09:18:34.067733049 CET	48202	443	192.168.2.13	185.125.190.26

UDP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Mar 17, 2025 09:17:53.796758890 CET	60032	53	192.168.2.13	1.1.1.1
Mar 17, 2025 09:17:53.796818972 CET	41507	53	192.168.2.13	1.1.1.1
Mar 17, 2025 09:17:53.803759098 CET	53	41507	1.1.1.1	192.168.2.13
Mar 17, 2025 09:17:53.835719109 CET	53	60032	1.1.1.1	192.168.2.13

DNS Queries

Timestamp	Source IP	Dest IP	Trans ID	OP Code	Name	Type	Class	DNS over HTTPS
Mar 17, 2025 09:17:53.796758890 CET	192.168.2.13	1.1.1.1	0xc99d	Standard query (0)	daisy.ubuntu.com	A (IP address)	IN (0x0001)	false
Mar 17, 2025 09:17:53.796818972 CET	192.168.2.13	1.1.1.1	0xb435	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 17, 2025 09:17:53.835719109 CET	1.1.1.1	192.168.2.13	0xc99d	No error (0)	daisy.ubuntu.com		162.213.35.24	A (IP address)	IN (0x0001)	false
Mar 17, 2025 09:17:53.835719109 CET	1.1.1.1	192.168.2.13	0xc99d	No error (0)	daisy.ubuntu.com		162.213.35.25	A (IP address)	IN (0x0001)	false

System Behavior

Analysis Process: dash PID: 5412, Parent PID: 3585

General

Start time (UTC):	08:17:41
Start date (UTC):	17/03/2025
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Process Activities

Process Overlayed (Exec)

Chronological Activities

Analysis Process: rm PID: 5412, Parent PID: 3585

General

Start time (UTC):	08:17:41
Start date (UTC):	17/03/2025
Path:	/usr/bin/rm
Arguments:	rm -f /tmp/tmp.5KUNi0Rg3b /tmp/tmp.acxLpbu0FK /tmp/tmp.NWulJLxprM
File size:	72056 bytes
MD5 hash:	aa2b5496fdbfd88e38791ab81f90b95b

File Activities

File Opened

File Deleted

File Read

Chronological Activities

Analysis Process: dash PID: 5413, Parent PID: 3585

General

Start time (UTC):	08:17:42
Start date (UTC):	17/03/2025
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Process Activities

Process Overlayed (Exec)

Chronological Activities

Analysis Process: rm PID: 5413, Parent PID: 3585

General

Start time (UTC):	08:17:42
Start date (UTC):	17/03/2025
Path:	/usr/bin/rm
Arguments:	rm -f /tmp/tmp.5KUNi0Rg3b /tmp/tmp.acxLpbu0FK /tmp/tmp.NWulJLxprM
File size:	72056 bytes
MD5 hash:	aa2b5496fdbfd88e38791ab81f90b95b

File Activities

File Opened

File Deleted

File Read

Chronological Activities

Analysis Process: arm7.elf PID: 5425, Parent PID: 5348

General

Start time (UTC):	08:17:50
Start date (UTC):	17/03/2025
Path:	/tmp/arm7.elf
Arguments:	/tmp/arm7.elf
File size:	4956856 bytes
MD5 hash:	5ebfcae4fe2471fcc5695c2394773ff1

File Activities

File Opened

File Deleted

File Read

File Written

File Moved

Directory Enumerated

Process Activities

Process Forked

Prctl Requested

Thread Sleep

System Activities

Query System Information (uname)

Network Activities

Socket Connecting

Chronological Activities

Analysis Process: arm7.elf PID: 5428, Parent PID: 5425

General

Start time (UTC):	08:17:52
Start date (UTC):	17/03/2025
Path:	/tmp/arm7.elf
Arguments:	-
File size:	4956856 bytes
MD5 hash:	5ebfcae4fe2471fcc5695c2394773ff1

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 arm7.elf

Overview

General Information

Detection

Signatures

Classification

General Information

Runtime Messages

Process Tree

Malware Threat Intel

Yara Signatures

Initial Sample

Memory Dumps

Suricata Signatures

Joe Sandbox Signatures

AV Detection

Networking

System Summary

Persistence and Installation Behavior

Malware Analysis System Evasion

Stealing of Sensitive Information

Remote Access Functionality

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.arwSwo (deleted)

/tmp/qemu-open.wu0k1n (deleted)

/tmp/qemu-open.zWSIgo (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: dash PID: 5412, Parent PID: 3585

General

Process Activities

Process Overlayed (Exec)

Chronological Activities

Analysis Process: rm PID: 5412, Parent PID: 3585

General

File Activities

File Opened

File Deleted

File Read

Chronological Activities

Analysis Process: dash PID: 5413, Parent PID: 3585

General

Process Activities

Linux Analysis Report
arm7.elf