Edit tour

Linux Analysis Report
skid.arm7.elf

Overview

General Information

Sample name:	skid.arm7.elf
Analysis ID:	1676184
MD5:	05750ffcabc06060147818395c9def22
SHA1:	021bb2c4bda7f08f7a50c29c58f80db6ae2183cd
SHA256:	94c8932063761ecd43ed95d0ca486fbf23eed31d11da30db9279a1805b7d7455
Tags:	elfuser-abuse_ch
Infos:

Detection

Score:	76
Range:	0 - 100

Signatures

Multi AV Scanner detection for submitted file

Connects to many ports of the same IP (likely port scanning)

Opens /proc/net/* files useful for finding connected devices and routers

Opens /sys/class/net/* files useful for querying network interface information

Performs DNS TXT record lookups

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

Sample tries to kill multiple processes (SIGKILL)

Uses STUN server to do NAT traversial

Detected TCP or UDP traffic on non-standard ports

Enumerates processes within the "proc" file system

Sample has stripped symbol table

Sample listens on a socket

Sample tries to kill a process (SIGKILL)

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

Classification

General Information

Joe Sandbox version:	42.0.0 Malachite
Analysis ID:	1676184
Start date and time:	2025-04-28 12:42:19 +02:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 3m 25s
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:	skid.arm7.elf
Detection:	MAL
Classification:	mal76.spre.troj.spyw.evad.linELF@0/0@2/0

Warnings

VT rate limit hit for: ukrainianhorseriding.kamru.su

Runtime Messages

Command:	/tmp/skid.arm7.elf
PID:	5487
Exit Code:	0
Exit Code Info:
Killed:	False
Standard Output:	chacha slide
Standard Error:

Process Tree

system is lnxubuntu20

skid.arm7.elf (PID: 5487, Parent: 5412, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/skid.arm7.elf

skid.arm7.elf New Fork (PID: 5491, Parent: 5487)

skid.arm7.elf New Fork (PID: 5513, Parent: 5491)

skid.arm7.elf New Fork (PID: 5515, Parent: 5491)

cleanup

Yara Signatures

⊘No yara matches

Suricata Signatures

⊘No Suricata rule has matched

Joe Sandbox Signatures

• AV Detection
• Spreading
• Networking
• System Summary
• Persistence and Installation Behavior
• Malware Analysis System Evasion
• HIPS / PFW / Operating System Protection Evasion

Click to jump to signature section

Show All Signature Results

AV Detection

Multi AV Scanner detection for submitted file

Source: skid.arm7.elf

ReversingLabs: Detection: 13%

Spreading

Opens /proc/net/* files useful for finding connected devices and routers

Source: /tmp/skid.arm7.elf (PID: 5491)

Opens: /proc/net/route

Jump to behavior

Networking

Connects to many ports of the same IP (likely port scanning)

Source: global traffic

TCP traffic: 67.205.137.180 ports 46201,0,1,2,4,6

Opens /sys/class/net/* files useful for querying network interface information

Source: /tmp/skid.arm7.elf (PID: 5491)

Opens: /sys/class/net/ens160/address

Jump to behavior

Uses STUN server to do NAT traversial

Source: unknown

DNS query: name: stun.l.google.com

Source: global traffic	TCP traffic: 192.168.2.14:36514 -> 67.205.137.180:46201
Source: global traffic	UDP traffic: 192.168.2.14:56782 -> 74.125.250.129:19302

Source: /tmp/skid.arm7.elf (PID: 5491)

Socket: 127.0.0.1:22448

Jump to behavior

Source: unknown	TCP traffic detected without corresponding DNS query: 67.205.137.180
Source: unknown	TCP traffic detected without corresponding DNS query: 67.205.137.180
Source: unknown	TCP traffic detected without corresponding DNS query: 67.205.137.180
Source: unknown	TCP traffic detected without corresponding DNS query: 67.205.137.180
Source: unknown	TCP traffic detected without corresponding DNS query: 67.205.137.180
Source: unknown	TCP traffic detected without corresponding DNS query: 67.205.137.180
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: ukrainianhorseriding.kamru.su
Source: global traffic	DNS traffic detected: DNS query: stun.l.google.com

System Summary

Sample tries to kill multiple processes (SIGKILL)

Source: /tmp/skid.arm7.elf (PID: 5515)	SIGKILL sent: pid: 5583, result: successful	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5515)	SIGKILL sent: pid: 5584, result: successful	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5515)	SIGKILL sent: pid: 5585, result: successful	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5515)	SIGKILL sent: pid: 5586, result: successful	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5515)	SIGKILL sent: pid: 5587, result: successful	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5515)	SIGKILL sent: pid: 5588, result: successful	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5515)	SIGKILL sent: pid: 5589, result: successful	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5515)	SIGKILL sent: pid: 5590, result: successful	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5515)	SIGKILL sent: pid: 5591, result: successful	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5515)	SIGKILL sent: pid: 5592, result: successful	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5515)	SIGKILL sent: pid: 5593, result: successful	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5515)	SIGKILL sent: pid: 5594, result: successful	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5515)	SIGKILL sent: pid: 5595, result: successful	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5515)	SIGKILL sent: pid: 5596, result: successful	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5515)	SIGKILL sent: pid: 5597, result: successful	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5515)	SIGKILL sent: pid: 5598, result: successful	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5515)	SIGKILL sent: pid: 5648, result: successful	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5515)	SIGKILL sent: pid: 5655, result: successful	Jump to behavior

Source: ELF static info symbol of initial sample

.symtab present: no

Source: /tmp/skid.arm7.elf (PID: 5515)	SIGKILL sent: pid: 5583, result: successful	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5515)	SIGKILL sent: pid: 5584, result: successful	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5515)	SIGKILL sent: pid: 5585, result: successful	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5515)	SIGKILL sent: pid: 5586, result: successful	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5515)	SIGKILL sent: pid: 5587, result: successful	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5515)	SIGKILL sent: pid: 5588, result: successful	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5515)	SIGKILL sent: pid: 5589, result: successful	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5515)	SIGKILL sent: pid: 5590, result: successful	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5515)	SIGKILL sent: pid: 5591, result: successful	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5515)	SIGKILL sent: pid: 5592, result: successful	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5515)	SIGKILL sent: pid: 5593, result: successful	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5515)	SIGKILL sent: pid: 5594, result: successful	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5515)	SIGKILL sent: pid: 5595, result: successful	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5515)	SIGKILL sent: pid: 5596, result: successful	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5515)	SIGKILL sent: pid: 5597, result: successful	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5515)	SIGKILL sent: pid: 5598, result: successful	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5515)	SIGKILL sent: pid: 5648, result: successful	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5515)	SIGKILL sent: pid: 5655, result: successful	Jump to behavior

Source: classification engine

Classification label: mal76.spre.troj.spyw.evad.linELF@0/0@2/0

Persistence and Installation Behavior

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

Source: /tmp/skid.arm7.elf (PID: 5487)

File: /proc/5487/mounts

Jump to behavior

Source: /tmp/skid.arm7.elf (PID: 5487)	File opened: /proc/3684/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5487)	File opened: /proc/3420/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5487)	File opened: /proc/1560/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5487)	File opened: /proc/1383/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5487)	File opened: /proc/3341/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5487)	File opened: /proc/3120/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5487)	File opened: /proc/3142/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5487)	File opened: /proc/3361/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5487)	File opened: /proc/1635/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5487)	File opened: /proc/1712/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5487)	File opened: /proc/1633/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5487)	File opened: /proc/1655/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5487)	File opened: /proc/1577/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5487)	File opened: /proc/1610/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5487)	File opened: /proc/1653/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5487)	File opened: /proc/1630/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5487)	File opened: /proc/3412/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5487)	File opened: /proc/3235/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5487)	File opened: /proc/1650/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5487)	File opened: /proc/1717/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5487)	File opened: /proc/1639/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5487)	File opened: /proc/1638/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5487)	File opened: /proc/1659/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5487)	File opened: /proc/3319/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5487)	File opened: /proc/3134/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5487)	File opened: /proc/3398/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5487)	File opened: /proc/1394/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5487)	File opened: /proc/3392/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5487)	File opened: /proc/3329/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5487)	File opened: /proc/3406/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5487)	File opened: /proc/1/maps	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5487)	File opened: /proc/1567/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5487)	File opened: /proc/3304/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5487)	File opened: /proc/3425/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5487)	File opened: /proc/1642/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5487)	File opened: /proc/3402/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5487)	File opened: /proc/1564/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5487)	File opened: /proc/1640/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5487)	File opened: /proc/3147/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5487)	File opened: /proc/3246/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5487)	File opened: /proc/1661/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5487)	File opened: /proc/1683/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5487)	File opened: /proc/3245/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5487)	File opened: /proc/800/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5487)	File opened: /proc/1647/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5513)	File opened: /proc/3684/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5513)	File opened: /proc/3420/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5513)	File opened: /proc/1560/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5513)	File opened: /proc/1383/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5513)	File opened: /proc/3341/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5513)	File opened: /proc/3120/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5513)	File opened: /proc/3142/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5513)	File opened: /proc/3361/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5513)	File opened: /proc/1635/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5513)	File opened: /proc/1712/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5513)	File opened: /proc/1633/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5513)	File opened: /proc/1655/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5513)	File opened: /proc/1577/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5513)	File opened: /proc/1610/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5513)	File opened: /proc/1653/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5513)	File opened: /proc/1630/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5513)	File opened: /proc/3412/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5513)	File opened: /proc/3235/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5513)	File opened: /proc/1650/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5513)	File opened: /proc/1717/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5513)	File opened: /proc/1639/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5513)	File opened: /proc/1638/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5513)	File opened: /proc/1659/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5513)	File opened: /proc/3319/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5513)	File opened: /proc/3134/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5513)	File opened: /proc/3398/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5513)	File opened: /proc/1394/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5513)	File opened: /proc/3392/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5513)	File opened: /proc/3329/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5513)	File opened: /proc/3406/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5513)	File opened: /proc/1567/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5513)	File opened: /proc/3304/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5513)	File opened: /proc/3425/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5513)	File opened: /proc/1642/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5513)	File opened: /proc/3402/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5513)	File opened: /proc/1564/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5513)	File opened: /proc/1640/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5513)	File opened: /proc/3147/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5513)	File opened: /proc/3246/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5513)	File opened: /proc/1661/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5513)	File opened: /proc/1683/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5513)	File opened: /proc/3245/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5513)	File opened: /proc/800/exe	Jump to behavior
Source: /tmp/skid.arm7.elf (PID: 5513)	File opened: /proc/1647/exe	Jump to behavior

Source: /tmp/skid.arm7.elf (PID: 5487)

Queries kernel information via 'uname':

Jump to behavior

Source: skid.arm7.elf, 5487.1.0000559bfaa2e000.0000559bfab7d000.rw-.sdmp	Binary or memory string: U!/etc/qemu-binfmt/arm
Source: skid.arm7.elf, 5487.1.00007ffd5191e000.00007ffd5193f000.rw-.sdmp	Binary or memory string: x86_64/usr/bin/qemu-arm/tmp/skid.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/skid.arm7.elf
Source: skid.arm7.elf, 5487.1.0000559bfaa2e000.0000559bfab7d000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/arm
Source: skid.arm7.elf, 5487.1.00007ffd5191e000.00007ffd5193f000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-arm

HIPS / PFW / Operating System Protection Evasion

Performs DNS TXT record lookups

Source: Traffic

DNS traffic detected: queries for: ukrainianhorseriding.kamru.su

Mitre Att&ck Matrix

Reconnaissance	Resource Development	Initial Access	Execution	Persistence	Privilege Escalation	Defense Evasion	Credential Access	Discovery	Lateral Movement	Collection	Command and Control	Exfiltration	Impact
Gather Victim Identity Information	Acquire Infrastructure	Valid Accounts	Windows Management Instrumentation	Path Interception	Path Interception	Direct Volume Access	1 OS Credential Dumping	11 Security Software Discovery	Remote Services	Data from Local System	1 Non-Standard Port	Exfiltration Over Other Network Medium	1 Service Stop
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	1 Remote System Discovery	SMB/Windows Admin Shares	Data from Network Shared Drive	1 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
skid.arm7.elf	14%	ReversingLabs	Linux.Backdoor.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
stun.l.google.com	74.125.250.129	true	false		high
ukrainianhorseriding.kamru.su	unknown	unknown	true		unknown

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
67.205.137.180	unknown	United States		14061	DIGITALOCEAN-ASNUS	true
74.125.250.129	stun.l.google.com	United States		15169	GOOGLEUS	false

Joe Sandbox View / Context

IPs

⊘No context

Domains

⊘No context

ASNs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
DIGITALOCEAN-ASNUS	http://www.timesofisrael.com/young-sephardic-jews-embrace-an-old-musical-tradition/	Get hash	malicious	Unknown	Browse	45.55.125.136
	250428-hq5p5aykz3.bin.exe	Get hash	malicious	MyDoom	Browse	104.248.224.170
	250428-fxpw5stsbx.bin.exe	Get hash	malicious	MyDoom	Browse	138.197.213.185
	250427-qx3s4s1wct.bin.vbs	Get hash	malicious	LCRYX	Browse	174.138.110.4
	hoho.arm.elf	Get hash	malicious	Unknown	Browse	134.209.166.133
	jew.mpsl.elf	Get hash	malicious	Unknown	Browse	157.245.157.96
	LCrypt0rX.vbs	Get hash	malicious	LCRYX	Browse	174.138.110.4
	arm.elf	Get hash	malicious	Mirai, Moobot	Browse	157.245.194.14
	mips.elf	Get hash	malicious	Mirai, Moobot	Browse	157.245.169.98
	sh4.elf	Get hash	malicious	Mirai, Moobot	Browse	157.245.169.81

JA3 Fingerprints

⊘No context

Dropped Files

⊘No context

Created / dropped Files

⊘No created / dropped files found

Static File Info

General

File type:	ELF 32-bit LSB executable, ARM, EABI4 version 1 (SYSV), statically linked, stripped
Entropy (8bit):	6.069693785759844
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	skid.arm7.elf
File size:	103'964 bytes
MD5:	05750ffcabc06060147818395c9def22
SHA1:	021bb2c4bda7f08f7a50c29c58f80db6ae2183cd
SHA256:	94c8932063761ecd43ed95d0ca486fbf23eed31d11da30db9279a1805b7d7455
SHA512:	911d4f2eb707916ab27e939c56f8c37f8161a54d082c5edea38ee4223df17cbd71ddd560692d9fb47710164be74b83910e745eec3c453fc5e158e82a50831d89
SSDEEP:	3072:9R6JtXZzlliV3n4HpPuyv7Jo1pacRTpVqnhd:36JtXZzTCX4HpPuyv7q1paSG
TLSH:	9CA3195ABD819B15D5C516BAFE4E118A33131BBCE3EE7212DD245B2023CBA1B0F7B512
File Content Preview:	.ELF..............(.........4...........4. ...(........p............(...(...........................................................P...............................................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:	103364
Section Header Size:	40
Number of Section Headers:	15
Header String Table Index:	14

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	0x1746c	0x0	0x6	AX	0	16
.fini	PROGBITS	0x1f55c	0x1755c	0x10	0x0	0x6	AX	0	4
.rodata	PROGBITS	0x1f570	0x17570	0x1718	0x0	0x2	A	0	8
.ARM.extab	PROGBITS	0x20c88	0x18c88	0x18	0x0	0x2	A	0	4
.ARM.exidx	ARM_EXIDX	0x20ca0	0x18ca0	0x128	0x0	0x82	AL	2	4
.eh_frame	PROGBITS	0x29000	0x19000	0x4	0x0	0x3	WA	0	4
.tbss	NOBITS	0x29004	0x19004	0x8	0x0	0x403	WAT	0	4
.init_array	INIT_ARRAY	0x29004	0x19004	0x4	0x0	0x3	WA	0	4
.fini_array	FINI_ARRAY	0x29008	0x19008	0x4	0x0	0x3	WA	0	4
.got	PROGBITS	0x29010	0x19010	0xac	0x4	0x3	WA	0	4
.data	PROGBITS	0x290bc	0x190bc	0x294	0x0	0x3	WA	0	4
.bss	NOBITS	0x29350	0x19350	0x8178	0x0	0x3	WA	0	4
.shstrtab	STRTAB	0x0	0x19350	0x73	0x0	0x0		0	1

Program Segments

Type	Offset	Virtual Address	Physical Address	File Size	Memory Size	Entropy	Flags	Flags Description	Align	Section Mappings
EXIDX	0x18ca0	0x20ca0	0x20ca0	0x128	0x128	4.4803	0x4	R	0x4	.ARM.exidx
LOAD	0x0	0x8000	0x8000	0x18dc8	0x18dc8	6.1056	0x5	R E	0x8000	.init .text .fini .rodata .ARM.extab .ARM.exidx
LOAD	0x19000	0x29000	0x29000	0x350	0x84c8	4.0423	0x6	RW	0x8000	.eh_frame .tbss .init_array .fini_array .got .data .bss
TLS	0x19004	0x29004	0x29004	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: 9
• 46201 undefined
• 19302 undefined
• 53 (DNS)

TCP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Apr 28, 2025 12:43:07.195239067 CEST	36514	46201	192.168.2.14	67.205.137.180
Apr 28, 2025 12:43:07.434998989 CEST	46201	36514	67.205.137.180	192.168.2.14
Apr 28, 2025 12:43:07.435110092 CEST	36514	46201	192.168.2.14	67.205.137.180
Apr 28, 2025 12:43:07.674804926 CEST	46201	36514	67.205.137.180	192.168.2.14
Apr 28, 2025 12:43:07.674864054 CEST	36514	46201	192.168.2.14	67.205.137.180
Apr 28, 2025 12:43:07.914195061 CEST	46201	36514	67.205.137.180	192.168.2.14
Apr 28, 2025 12:43:07.914297104 CEST	36514	46201	192.168.2.14	67.205.137.180
Apr 28, 2025 12:43:08.747224092 CEST	36514	46201	192.168.2.14	67.205.137.180
Apr 28, 2025 12:43:08.987889051 CEST	46201	36514	67.205.137.180	192.168.2.14
Apr 28, 2025 12:44:14.515428066 CEST	46201	36514	67.205.137.180	192.168.2.14
Apr 28, 2025 12:44:14.515552044 CEST	36514	46201	192.168.2.14	67.205.137.180

UDP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Apr 28, 2025 12:43:06.852010965 CEST	40214	53	192.168.2.14	1.1.1.1
Apr 28, 2025 12:43:07.193562031 CEST	53	40214	1.1.1.1	192.168.2.14
Apr 28, 2025 12:43:08.437133074 CEST	55717	53	192.168.2.14	1.1.1.1
Apr 28, 2025 12:43:08.578536034 CEST	53	55717	1.1.1.1	192.168.2.14
Apr 28, 2025 12:43:08.579153061 CEST	56782	19302	192.168.2.14	74.125.250.129
Apr 28, 2025 12:43:08.727258921 CEST	19302	56782	74.125.250.129	192.168.2.14

DNS Queries

Timestamp	Source IP	Dest IP	Trans ID	OP Code	Name	Type	Class	DNS over HTTPS
Apr 28, 2025 12:43:06.852010965 CEST	192.168.2.14	1.1.1.1	0x4567	Standard query (0)	ukrainianhorseriding.kamru.su	16	IN (0x0001)	false
Apr 28, 2025 12:43:08.437133074 CEST	192.168.2.14	1.1.1.1	0x23c6	Standard query (0)	stun.l.google.com	A (IP address)	IN (0x0001)	false

DNS Answers

Timestamp	Source IP	Dest IP	Trans ID	Reply Code	Name	CName	Address	Type	Class	DNS over HTTPS
Apr 28, 2025 12:43:07.193562031 CEST	1.1.1.1	192.168.2.14	0x4567	No error (0)	ukrainianhorseriding.kamru.su			TXT (Text strings)	IN (0x0001)	false
Apr 28, 2025 12:43:08.578536034 CEST	1.1.1.1	192.168.2.14	0x23c6	No error (0)	stun.l.google.com		74.125.250.129	A (IP address)	IN (0x0001)	false

System Behavior

Analysis Process: skid.arm7.elf PID: 5487, Parent PID: 5412

General

Start time (UTC):	10:43:03
Start date (UTC):	28/04/2025
Path:	/tmp/skid.arm7.elf
Arguments:	/tmp/skid.arm7.elf
File size:	4956856 bytes
MD5 hash:	5ebfcae4fe2471fcc5695c2394773ff1

File Activities

File Opened

File Read

Directory Enumerated

Process Activities

Process Forked

Prctl Requested

Thread Sleep

System Activities

Query System Information (uname)

Network Activities

Socket Connecting

Chronological Activities

Analysis Process: skid.arm7.elf PID: 5491, Parent PID: 5487

General

Start time (UTC):	10:43:06
Start date (UTC):	28/04/2025
Path:	/tmp/skid.arm7.elf
Arguments:	-
File size:	4956856 bytes
MD5 hash:	5ebfcae4fe2471fcc5695c2394773ff1

File Activities

File Opened

File Read

Process Activities

Process Forked

Prctl Requested

Thread Sleep

Network Activities

Socket Listening

Socket Connecting

Chronological Activities

Analysis Process: skid.arm7.elf PID: 5513, Parent PID: 5491

General

Start time (UTC):	10:43:06
Start date (UTC):	28/04/2025
Path:	/tmp/skid.arm7.elf
Arguments:	-
File size:	4956856 bytes
MD5 hash:	5ebfcae4fe2471fcc5695c2394773ff1

File Activities

File Opened

File Read

Directory Enumerated

Process Activities

Prctl Requested

Thread Sleep

Chronological Activities

Analysis Process: skid.arm7.elf PID: 5515, Parent PID: 5491

General

Start time (UTC):	10:43:06
Start date (UTC):	28/04/2025
Path:	/tmp/skid.arm7.elf
Arguments:	-
File size:	4956856 bytes
MD5 hash:	5ebfcae4fe2471fcc5695c2394773ff1

Description:	Adversaries may attempt to dump credentials to obtain account login and credential material, normally in the form of a hash or a clear text password, from the operating system and software. Credentials can then be used to perform Lateral Movement and access restricted information.
Tactics:	Credential Access
Data Sources:	Active Directory: Active Directory Object Access, Command: Command Execution, File: File Access, Network Traffic: Network Traffic Content, Network Traffic: Network Traffic Flow, Process: OS API Execution, Process: Process Access, Process: Process Creation, Windows Registry: Windows Registry Key Access
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

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

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

Description:	Adversaries may attempt to get a listing of other systems by IP address, hostname, or other logical identifier on a network that may be used for Lateral Movement from the current system. Functionality could exist within remote access tools to enable this, but utilities available on the operating system could also be used such as Ping or `net view` using Net .
Tactics:	Discovery
Data Sources:	Command: Command Execution, File: File Access, Network Traffic: Network Connection Creation, Process: Process Creation
Platforms:	Linux, macOS, Network, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may communicate using a protocol and port pairing that are typically not associated. For example, HTTPS over port 8088or port 587as opposed to the traditional port 443. Adversaries may make changes to the standard port used by a protocol to bypass filtering or muddle analysis/parsing of network data.
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

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

Description:	Adversaries may stop or disable services on a system to render those services unavailable to legitimate users. Stopping critical services or processes can inhibit or stop response to an incident or aid in the adversary's overall objectives to cause damage to the environment.
Tactics:	Impact
Data Sources:	Command: Command Execution, File: File Modification, Process: OS API Execution, Process: Process Creation, Process: Process Termination, Service: Service Metadata, Windows Registry: Windows Registry Key Modification
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 skid.arm7.elf

Overview

General Information

Detection

Signatures

Classification

General Information

Warnings

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

HIPS / PFW / Operating System Protection Evasion

Mitre Att&ck Matrix

Malware Configuration

Behavior Graph

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

Dropped Files

Domains

URLs

Domains and IPs

Contacted Domains

World Map of Contacted IPs

Public IPs

Joe Sandbox View / Context

IPs

Domains

ASNs

JA3 Fingerprints

Dropped Files

Created / dropped Files

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: skid.arm7.elf PID: 5487, Parent PID: 5412

General

File Activities

File Opened

File Read

Directory Enumerated

Process Activities

Process Forked

Prctl Requested

Thread Sleep

System Activities

Query System Information (uname)

Network Activities

Socket Connecting

Chronological Activities

Analysis Process: skid.arm7.elf PID: 5491, Parent PID: 5487

General

File Activities

File Opened

File Read

Process Activities

Linux Analysis Report
skid.arm7.elf