Edit tour

Linux Analysis Report
x.rar.elf

Overview

General Information

Sample name:	x.rar.elf
Analysis ID:	1645463
MD5:	6c8a16ed9f183d652e44b33fba9b2f88
SHA1:	20fbc68f08c22b5fa5152adbfb12e8177d507d6a
SHA256:	eaf3671ee1af8990aa354f3bdc34a72192d56039105e4b1668fa0eec148bb716
Tags:	elfuser-abuse_ch
Infos:

Detection

Xmrig

Score:	68
Range:	0 - 100

Signatures

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for submitted file

Yara detected Xmrig cryptocurrency miner

Found strings related to Crypto-Mining

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

Yara signature match

Classification

General Information

Joe Sandbox version:	42.0.0 Malachite
Analysis ID:	1645463
Start date and time:	2025-03-21 19:28:02 +01:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 4m 19s
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:	x.rar.elf
Detection:	MAL
Classification:	mal68.mine.linELF@0/0@0/0

Runtime Messages

Command:	/tmp/x.rar.elf
PID:	5480
Exit Code:	139
Exit Code Info:	SIGSEGV (11) Segmentation fault invalid memory reference
Killed:	False
Standard Output:
Standard Error:

Process Tree

system is lnxubuntu20

dash New Fork (PID: 5520, Parent: 3632)

rm (PID: 5520, Parent: 3632, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.QH7mnZeNQY /tmp/tmp.SePge9FzMC /tmp/tmp.x4B175S2RO

dash New Fork (PID: 5521, Parent: 3632)

rm (PID: 5521, Parent: 3632, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.QH7mnZeNQY /tmp/tmp.SePge9FzMC /tmp/tmp.x4B175S2RO

cleanup

Malware Threat Intel

Provided by

Name	Description	Attribution	Blogpost URLs	Link
XMRIG		No Attribution	https://www.aquasec.com/blog/container-security-tnt-container-attack/ https://www.aquasec.com/blog/pg_mem-a-malware-hidden-in-the-postgres-processes/	https://malpedia.caad.fkie.fraunhofer.de/details/elf.xmrig

Yara Signatures

Initial Sample

Source	Rule	Description	Author	Strings
x.rar.elf	JoeSecurity_Xmrig	Yara detected Xmrig cryptocurrency miner	Joe Security
x.rar.elf	Linux_Trojan_Pornoasset_927f314f	unknown	unknown	0x253818:$a: C3 D3 CB D3 C3 48 31 C3 48 0F AF F0 48 0F AF F0 48 0F AF F0 48
x.rar.elf	MacOS_Cryptominer_Xmrig_241780a1	unknown	unknown	0x4fb254:$a1: mining.set_target 0x4ed815:$a2: XMRIG_HOSTNAME 0x4f0568:$a3: Usage: xmrig [OPTIONS] 0x4ed7f6:$a4: XMRIG_VERSION
x.rar.elf	miner_lin_xmrig_strings	Detects XMRig ELF	Sekoia.io	0x4f049a:$: XMRig 0x4f1d68:$: XMRig 0x4f23f8:$: pool_wallet 0x4f242e:$: IP Address currently banned 0x4f245f:$: rigid 0x4f2c8e:$: diff_current 0x4f2c9b:$: shares_good 0x4f2ca7:$: shares_total 0x4f2cb4:$: avg_time 0x4f2cbd:$: avg_time 0x4f2cbd:$: avg_time_ms 0x4f2cc9:$: hashes_total 0x4f2d8c:$: pool address 0x4f2d99:$: ping time 0x4f2da3:$: connection time 0x55b168:$: connection time 0x4f3080:$: daemon+https:// 0x4f3090:$: daemon+http:// 0x4f30a0:$: socks5:// 0x4f0168:$: stratum+ssl:// 0x4f30b0:$: stratum+ssl://

Suricata Signatures

⊘No Suricata rule has matched

Joe Sandbox Signatures

• AV Detection
• Bitcoin Miner
• Networking
• System Summary
• Persistence and Installation Behavior

Click to jump to signature section

Show All Signature Results

AV Detection

Multi AV Scanner detection for submitted file

Source: x.rar.elf	Virustotal: Detection: 44%			Perma Link
Source: x.rar.elf	ReversingLabs: Detection: 33%

Bitcoin Miner

Yara detected Xmrig cryptocurrency miner

Source: Yara match

File source: x.rar.elf, type: SAMPLE

Found strings related to Crypto-Mining

Source: x.rar.elf	String found in binary or memory: stratum+ssl://randomx.xmrig.com:443
Source: x.rar.elf	String found in binary or memory: cryptonight/0
Source: x.rar.elf	String found in binary or memory: -o, --url=URL URL of mining server
Source: x.rar.elf	String found in binary or memory: stratum+tcp://
Source: x.rar.elf	String found in binary or memory: Usage: xmrig [OPTIONS]
Source: x.rar.elf	String found in binary or memory: XMRig 6.18.1

Source: unknown	TCP traffic detected without corresponding DNS query: 34.254.182.186
Source: unknown	TCP traffic detected without corresponding DNS query: 185.125.190.26
Source: unknown	TCP traffic detected without corresponding DNS query: 34.254.182.186
Source: unknown	TCP traffic detected without corresponding DNS query: 185.125.190.26

Source: x.rar.elf	String found in binary or memory: https://gcc.gnu.org/bugs/):
Source: x.rar.elf	String found in binary or memory: https://xmrig.com/benchmark/%s
Source: x.rar.elf	String found in binary or memory: https://xmrig.com/docs/algorithms
Source: x.rar.elf	String found in binary or memory: https://xmrig.com/wizard
Source: x.rar.elf	String found in binary or memory: https://xmrig.com/wizard%s

Source: unknown	Network traffic detected: HTTP traffic on port 59322 -> 443
Source: unknown	Network traffic detected: HTTP traffic on port 443 -> 59322
Source: unknown	Network traffic detected: HTTP traffic on port 46540 -> 443

System Summary

Malicious sample detected (through community Yara rule)

Source: x.rar.elf, type: SAMPLE	Matched rule: Linux_Trojan_Pornoasset_927f314f Author: unknown
Source: x.rar.elf, type: SAMPLE	Matched rule: MacOS_Cryptominer_Xmrig_241780a1 Author: unknown
Source: x.rar.elf, type: SAMPLE	Matched rule: Detects XMRig ELF Author: Sekoia.io

Source: x.rar.elf, type: SAMPLE	Matched rule: Linux_Trojan_Pornoasset_927f314f reference_sample = d653598df857535c354ba21d96358d4767d6ada137ee32ce5eb4972363b35f93, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Pornoasset, fingerprint = 7214d3132fc606482e3f6236d291082a3abc0359c80255048045dba6e60ec7bf, id = 927f314f-2cbb-4f87-b75c-9aa5ef758599, last_modified = 2021-09-16
Source: x.rar.elf, type: SAMPLE	Matched rule: MacOS_Cryptominer_Xmrig_241780a1 reference_sample = 2e94fa6ac4045292bf04070a372a03df804fa96c3b0cb4ac637eeeb67531a32f, os = macos, severity = x86, creation_date = 2021-09-30, scan_context = file, memory, license = Elastic License v2, threat_name = MacOS.Cryptominer.Xmrig, fingerprint = be9c56f18e0f0bdc8c46544039b9cb0bbba595c1912d089b2bcc7a7768ac04a8, id = 241780a1-ad50-4ded-b85a-26339ae5a632, last_modified = 2021-10-25
Source: x.rar.elf, type: SAMPLE	Matched rule: miner_lin_xmrig_strings author = Sekoia.io, description = Detects XMRig ELF, creation_date = 2022-09-08, classification = TLP:CLEAR, version = 1.0, modification_date = 2024-01-04, id = 2f99020b-424c-4433-860c-5e9ab4e1f1de

Source: classification engine

Classification label: mal68.mine.linELF@0/0@0/0

Source: /usr/bin/dash (PID: 5520)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.QH7mnZeNQY /tmp/tmp.SePge9FzMC /tmp/tmp.x4B175S2RO			Jump to behavior
Source: /usr/bin/dash (PID: 5521)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.QH7mnZeNQY /tmp/tmp.SePge9FzMC /tmp/tmp.x4B175S2RO			Jump to behavior

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	OS Credential Dumping	System Service 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	Application Window Discovery	Remote Desktop Protocol	Data from Removable Media	1 Application Layer Protocol	Exfiltration Over Bluetooth	Network Denial of Service

Malware Configuration

⊘No configs have been found

Behavior Graph

Hide Legend

Legend:

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

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

Source	Detection	Scanner	Label	Link
x.rar.elf	45%	Virustotal		Browse
x.rar.elf	33%	ReversingLabs	Linux.Hacktool.Multiverze

Dropped Files

⊘No Antivirus matches

Domains

⊘No Antivirus matches

URLs

⊘No Antivirus matches

Domains and IPs

Download Network PCAP: filtered – full

Contacted Domains

⊘No contacted domains info

URLs from Memory and Binaries

Name	Source	Malicious	Reputation
https://gcc.gnu.org/bugs/):	x.rar.elf	false	high
https://xmrig.com/benchmark/%s	x.rar.elf	false	high
https://xmrig.com/wizard	x.rar.elf	false	high
https://xmrig.com/wizard%s	x.rar.elf	false	high
https://xmrig.com/docs/algorithms	x.rar.elf	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
34.254.182.186	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	na.elf	Get hash	malicious	Prometei	Browse
	46.19.143.26-mips-2025-03-01T06_09_25.elf	Get hash	malicious	Unknown	Browse
	boatnet.spc.elf	Get hash	malicious	Mirai	Browse
	sshd.elf	Get hash	malicious	Unknown	Browse
	hiss.mips.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	Space.arm.elf	Get hash	malicious	Mirai	Browse
34.254.182.186	na.elf	Get hash	malicious	Prometei	Browse
	main_x86_64.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	miner.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	Space.arm5.elf	Get hash	malicious	Unknown	Browse
	arm.elf	Get hash	malicious	Unknown	Browse
	bot.arm6.elf	Get hash	malicious	Unknown	Browse
	hiss.arm7.elf	Get hash	malicious	Unknown	Browse
	resgod.mpsl.elf	Get hash	malicious	Mirai	Browse

Domains

⊘No context

ASNs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
AMAZON-02US	Scanned Inv#118953-0012345.svg	Get hash	malicious	HTMLPhisher	Browse	13.33.252.45
	jwyt4py98x.arm7.elf	Get hash	malicious	Mirai	Browse	34.249.145.219
	jwyt4py98x.mips.elf	Get hash	malicious	Mirai	Browse	54.171.230.55
	na.elf	Get hash	malicious	Prometei	Browse	52.212.150.54
	EvaxLAF.exe1.exe	Get hash	malicious	Vidar	Browse	108.138.128.77
	na.elf	Get hash	malicious	Prometei	Browse	34.249.145.219
	na.elf	Get hash	malicious	Prometei	Browse	54.247.62.1
	https://themsls.org	Get hash	malicious	Unknown	Browse	13.33.252.92
	fJkp8HnAFY.dll	Get hash	malicious	GhostRat	Browse	18.163.117.227
	iR19HYdDBF.dll	Get hash	malicious	GhostRat	Browse	18.163.117.227
CANONICAL-ASGB	jwyt4py98x.arm7.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	jwyt4py98x.mips.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	na.elf	Get hash	malicious	Prometei	Browse	91.189.91.42
	na.elf	Get hash	malicious	Prometei	Browse	91.189.91.42
	na.elf	Get hash	malicious	Prometei	Browse	91.189.91.42
	na.elf	Get hash	malicious	Prometei	Browse	91.189.91.42
	na.elf	Get hash	malicious	Prometei	Browse	91.189.91.42
	na.elf	Get hash	malicious	Prometei	Browse	185.125.190.26
	na.elf	Get hash	malicious	Prometei	Browse	91.189.91.42
	na.elf	Get hash	malicious	Prometei	Browse	91.189.91.42

JA3 Fingerprints

⊘No context

Dropped Files

⊘No context

Created / dropped Files

⊘No created / dropped files found

Static File Info

General

File type:	ELF 64-bit LSB shared object, x86-64, version 1 (SYSV), dynamically linked, missing section headers at 7022752
Entropy (8bit):	6.49804316555513
TrID:	ELF Executable and Linkable format (Linux) (4029/14) 49.77% ELF Executable and Linkable format (generic) (4004/1) 49.46% Lumena CEL bitmap (63/63) 0.78%
File name:	x.rar.elf
File size:	6'730'560 bytes
MD5:	6c8a16ed9f183d652e44b33fba9b2f88
SHA1:	20fbc68f08c22b5fa5152adbfb12e8177d507d6a
SHA256:	eaf3671ee1af8990aa354f3bdc34a72192d56039105e4b1668fa0eec148bb716
SHA512:	4e6b9da4f3654e079731b771e507647d494e9c3e0a587c3525690aa491bb26f3fe00b4434ace31a872df552b2912ae0619ebf9028754f681849c35ed8fb626d8
SSDEEP:	98304:hVqJqQZKp/WfHooDvDvD0D9HT7TJ7itKaEub6KBsiMZSx784ZYjRPE3PE3PEXb2j:qJQWr7M0yGW5yrLz8yCSPfV+iDK0FKzj
TLSH:	CB666D07B5A358FCC1AAC870865FD573BD70B8984211797B3694AB302F27E605B1DFA2
File Content Preview:	.ELF..............>......z......@........"k.........@.8...@.............................................................................................^.H.....^.H.......................N.......N.......N.....-T......-T........................g......,g....

Network Behavior

Download Network PCAP: filtered – full

TCP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Mar 21, 2025 19:28:45.681895971 CET	59322	443	192.168.2.14	34.254.182.186
Mar 21, 2025 19:28:51.570163012 CET	46540	443	192.168.2.14	185.125.190.26
Mar 21, 2025 19:29:10.148401976 CET	59322	443	192.168.2.14	34.254.182.186
Mar 21, 2025 19:29:10.338776112 CET	443	59322	34.254.182.186	192.168.2.14
Mar 21, 2025 19:29:22.548233032 CET	46540	443	192.168.2.14	185.125.190.26

System Behavior

Analysis Process: dash PID: 5520, Parent PID: 3632

General

Start time (UTC):	18:29:09
Start date (UTC):	21/03/2025
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Process Activities

Process Overlayed (Exec)

Chronological Activities

Analysis Process: rm PID: 5520, Parent PID: 3632

General

Start time (UTC):	18:29:09
Start date (UTC):	21/03/2025
Path:	/usr/bin/rm
Arguments:	rm -f /tmp/tmp.QH7mnZeNQY /tmp/tmp.SePge9FzMC /tmp/tmp.x4B175S2RO
File size:	72056 bytes
MD5 hash:	aa2b5496fdbfd88e38791ab81f90b95b

File Activities

File Opened

File Deleted

File Read

Chronological Activities

Analysis Process: dash PID: 5521, Parent PID: 3632

General

Start time (UTC):	18:29:09
Start date (UTC):	21/03/2025
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Process Activities

Process Overlayed (Exec)

Chronological Activities

Analysis Process: rm PID: 5521, Parent PID: 3632

General

Start time (UTC):	18:29:09
Start date (UTC):	21/03/2025
Path:	/usr/bin/rm
Arguments:	rm -f /tmp/tmp.QH7mnZeNQY /tmp/tmp.SePge9FzMC /tmp/tmp.x4B175S2RO
File size:	72056 bytes
MD5 hash:	aa2b5496fdbfd88e38791ab81f90b95b

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 employ a known encryption algorithm to conceal command and control traffic rather than relying on any inherent protections provided by a communication protocol. Despite the use of a secure algorithm, these implementations may be vulnerable to reverse engineering if secret keys are encoded and/or generated within malware samples/configuration files.
Tactics:	Command and Control
Data Sources:	Network Traffic: Network Traffic Content
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may communicate using OSI application layer protocols to avoid detection/network filtering by blending in with existing traffic. Commands to the remote system, and often the results of those commands, will be embedded within the protocol traffic between the client and server.
Tactics:	Command and Control
Data Sources:	Network Traffic: Network Traffic Content, Network Traffic: Network Traffic Flow
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Behavior Section

Behavior Chronological

Disassembly

Uncategorized

Graph

Loading Joe Sandbox Report ...

Warning!

Linux Analysis Report x.rar.elf

Overview

General Information

Detection

Signatures

Classification

General Information

Runtime Messages

Process Tree

Malware Threat Intel

Yara Signatures

Initial Sample

Suricata Signatures

Joe Sandbox Signatures

AV Detection

Bitcoin Miner

Networking

System Summary

Persistence and Installation Behavior

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

Static File Info

General

Network Behavior

TCP Packets

System Behavior

Analysis Process: dash PID: 5520, Parent PID: 3632

General

Process Activities

Process Overlayed (Exec)

Chronological Activities

Analysis Process: rm PID: 5520, Parent PID: 3632

General

File Activities

File Opened

File Deleted

File Read

Chronological Activities

Analysis Process: dash PID: 5521, Parent PID: 3632

General

Process Activities

Process Overlayed (Exec)

Chronological Activities

Analysis Process: rm PID: 5521, Parent PID: 3632

General

File Activities

File Opened

File Deleted

File Read

Chronological Activities

Linux Analysis Report
x.rar.elf