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Linux Analysis Report
socat

Overview

General Information

Sample name:	socat
Analysis ID:	1654671
MD5:	702aedbf38c1ee6af51862a7988456ff
SHA1:	190082382787c2eb99d175210f1ce20b51d95708
SHA256:	dc5853ef949bcdc092f61544ae9b7c87b003cdc8d7fc0641b09f8414b2607e25
Infos:

Detection

Score:	48
Range:	0 - 100

Signatures

Malicious sample detected (through community Yara rule)

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:	1654671
Start date and time:	2025-04-02 14:27:04 +02:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 10m 35s
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:	socat
Detection:	MAL
Classification:	mal48.lin@0/0@0/0
Cookbook Comments:	Analysis time extended to 480s due to sleep detection in submitted sample

Runtime Messages

Command:	/tmp/socat
PID:	6230
Exit Code:	127
Exit Code Info:
Killed:	False
Standard Output:
Standard Error:	/tmp/socat: error while loading shared libraries: libssl.so.3: cannot open shared object file: No such file or directory

Process Tree

system is lnxubuntu20

socat (PID: 6230, Parent: 6153, MD5: 702aedbf38c1ee6af51862a7988456ff) Arguments: /tmp/socat

dash New Fork (PID: 6283, Parent: 4331)

rm (PID: 6283, Parent: 4331, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.CWBTWjrGh6 /tmp/tmp.En8661hFvT /tmp/tmp.NMKRCl0XyI

dash New Fork (PID: 6284, Parent: 4331)

rm (PID: 6284, Parent: 4331, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.CWBTWjrGh6 /tmp/tmp.En8661hFvT /tmp/tmp.NMKRCl0XyI

cleanup

Yara Signatures

Initial Sample

Source	Rule	Description	Author	Strings
socat	hacktool_socat_strings	Detects socat	Sekoia.io	0x3d12e:$: [options] <bi-address> <bi-address> 0x44ecc:$: version %s on %s 0x453df:$: version %s on %s 0x3d9c8:$: socat_signal(): 0x3d9f0:$: socat_signal():

Suricata Signatures

⊘No Suricata rule has matched

Joe Sandbox Signatures

• Networking
• System Summary
• Persistence and Installation Behavior

Click to jump to signature section

Show All Signature Results

Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.42
Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.43
Source: unknown	TCP traffic detected without corresponding DNS query: 109.202.202.202
Source: unknown	TCP traffic detected without corresponding DNS query: 34.249.145.219
Source: unknown	TCP traffic detected without corresponding DNS query: 34.249.145.219
Source: unknown	TCP traffic detected without corresponding DNS query: 34.249.145.219
Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.42
Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.43
Source: unknown	TCP traffic detected without corresponding DNS query: 109.202.202.202
Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.42
Source: unknown	TCP traffic detected without corresponding DNS query: 34.249.145.219

Source: socat	String found in binary or memory: http://www.openssl.org/)
Source: socat	String found in binary or memory: http://www.openssl.org/)socat

Source: unknown	Network traffic detected: HTTP traffic on port 43928 -> 443
Source: unknown	Network traffic detected: HTTP traffic on port 39248 -> 443
Source: unknown	Network traffic detected: HTTP traffic on port 443 -> 39248
Source: unknown	Network traffic detected: HTTP traffic on port 42836 -> 443

System Summary

Malicious sample detected (through community Yara rule)

Source: socat, type: SAMPLE

Matched rule: Detects socat Author: Sekoia.io

Source: socat, type: SAMPLE

Matched rule: hacktool_socat_strings author = Sekoia.io, description = Detects socat, creation_date = 2023-12-08, classification = TLP:CLEAR, version = 1.0, id = 7c7e4085-39b2-445e-a9ff-52f21936e714

Source: classification engine

Classification label: mal48.lin@0/0@0/0

Source: /usr/bin/dash (PID: 6283)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.CWBTWjrGh6 /tmp/tmp.En8661hFvT /tmp/tmp.NMKRCl0XyI			Jump to behavior
Source: /usr/bin/dash (PID: 6284)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.CWBTWjrGh6 /tmp/tmp.En8661hFvT /tmp/tmp.NMKRCl0XyI			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

Screenshots

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Thumbnails

This section contains all screenshots as thumbnails, including those not shown in the slideshow.

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

⊘No Antivirus matches

Dropped Files

⊘No Antivirus matches

Domains

⊘No Antivirus matches

URLs

⊘No Antivirus matches

Domains and IPs

Download Network PCAP: filtered – full

Contacted Domains

⊘No contacted domains info

URLs from Memory and Binaries

Name	Source	Malicious	Antivirus Detection	Reputation
http://www.openssl.org/)	socat	false		high
http://www.openssl.org/)socat	socat	false		high

World Map of Contacted IPs

No. of IPs < 25%
25% < No. of IPs < 50%
50% < No. of IPs < 75%
75% < No. of IPs

Public IPs

IP	Domain	Country	ASN	ASN Name	Malicious
34.249.145.219	unknown	United States	16509	AMAZON-02US	false
109.202.202.202	unknown	Switzerland	13030	INIT7CH	false
91.189.91.43	unknown	United Kingdom	41231	CANONICAL-ASGB	false
91.189.91.42	unknown	United Kingdom	41231	CANONICAL-ASGB	false

Joe Sandbox View / Context

IPs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
34.249.145.219	boatnet.ppc.elf	Get hash	malicious	Mirai	Browse
	mips.nn.elf	Get hash	malicious	Mirai	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	arm6.nn.elf	Get hash	malicious	Mirai	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	ppc.elf	Get hash	malicious	Unknown	Browse
	drea4.elf	Get hash	malicious	Unknown	Browse
	825.elf	Get hash	malicious	Unknown	Browse
109.202.202.202	kpLwzBouH4.elf	Get hash	malicious	Unknown	Browse	ch.archive.ubuntu.com/ubuntu/pool/main/f/firefox/firefox_92.0%2bbuild3-0ubuntu0.20.04.1_amd64.deb
91.189.91.43	na.elf	Get hash	malicious	Prometei	Browse
	boatnet.ppc.elf	Get hash	malicious	Mirai	Browse
	boatnet.sh4.elf	Get hash	malicious	Mirai	Browse
	boatnet.mpsl.elf	Get hash	malicious	Mirai	Browse
	spim.elf	Get hash	malicious	Unknown	Browse
	boatnet.arc.elf	Get hash	malicious	Mirai	Browse
	boatnet.arm5.elf	Get hash	malicious	Mirai	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	x86_64.nn.elf	Get hash	malicious	Mirai	Browse
	na.elf	Get hash	malicious	Prometei	Browse
91.189.91.42	na.elf	Get hash	malicious	Prometei	Browse
	boatnet.ppc.elf	Get hash	malicious	Mirai	Browse
	boatnet.sh4.elf	Get hash	malicious	Mirai	Browse
	boatnet.mpsl.elf	Get hash	malicious	Mirai	Browse
	spim.elf	Get hash	malicious	Unknown	Browse
	boatnet.arc.elf	Get hash	malicious	Mirai	Browse
	boatnet.arm5.elf	Get hash	malicious	Mirai	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	x86_64.nn.elf	Get hash	malicious	Mirai	Browse
	na.elf	Get hash	malicious	Prometei	Browse

Domains

⊘No context

ASNs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
CANONICAL-ASGB	na.elf	Get hash	malicious	Prometei	Browse	91.189.91.42
	boatnet.ppc.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	boatnet.sh4.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	boatnet.mpsl.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	spim.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	boatnet.arc.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	boatnet.arm5.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	na.elf	Get hash	malicious	Prometei	Browse	91.189.91.42
	x86_64.nn.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	na.elf	Get hash	malicious	Prometei	Browse	91.189.91.42
CANONICAL-ASGB	na.elf	Get hash	malicious	Prometei	Browse	91.189.91.42
	boatnet.ppc.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	boatnet.sh4.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	boatnet.mpsl.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	spim.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	boatnet.arc.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	boatnet.arm5.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	na.elf	Get hash	malicious	Prometei	Browse	91.189.91.42
	x86_64.nn.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	na.elf	Get hash	malicious	Prometei	Browse	91.189.91.42
INIT7CH	na.elf	Get hash	malicious	Prometei	Browse	109.202.202.202
	boatnet.ppc.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	boatnet.sh4.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	boatnet.mpsl.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	spim.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	boatnet.arc.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	boatnet.arm5.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	na.elf	Get hash	malicious	Prometei	Browse	109.202.202.202
	x86_64.nn.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	na.elf	Get hash	malicious	Prometei	Browse	109.202.202.202
AMAZON-02US	letter2481-fitocosmetic.pdf	Get hash	malicious	HTMLPhisher	Browse	13.226.94.10
	letter2481-fitocosmetic.pdf	Get hash	malicious	HTMLPhisher	Browse	13.226.94.92
	BESTELLUNG24730.EXE.exe	Get hash	malicious	FormBook	Browse	13.248.169.48
	na.elf	Get hash	malicious	Prometei	Browse	34.243.160.129
	https://upcdn.io/W23MT6d/raw/PLASSER%20SOUTH%20AFRICA.pdf	Get hash	malicious	HTMLPhisher	Browse	3.168.102.31
	boatnet.ppc.elf	Get hash	malicious	Mirai	Browse	34.249.145.219
	na.elf	Get hash	malicious	Prometei	Browse	54.217.10.153
	https://app.capacities.io/home/63046a91-df50-4ebb-84ab-5f0bf1208f6f	Get hash	malicious	HTMLPhisher, Invisible JS, Tycoon2FA	Browse	3.5.137.142
	boatnet.mpsl.elf	Get hash	malicious	Mirai	Browse	54.171.230.55
	https://app.salesforceiq.com/r?target=614a51825fca485d60691526&t=AFwhZf0cvVSRkxL_ZnKrPopBohu0BY8RxIvIio7deEr8IYfLj7_CzJhp0DG7qixuIe9S9P0aHZw30z0m58R-sX4GIJ0lhUgHQXCwgykuzYKc_TIaxSP3Z0ObCXElS3mCv7bs1E4pjVUI&url=https://TyW5.ArcxticVision.ru/u3v4jfQ-4jfQ/$eatme@shiitehole.com	Get hash	malicious	HTMLPhisher, Invisible JS, Tycoon2FA	Browse	44.226.80.26

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 pie executable, x86-64, version 1 (SYSV), dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, for GNU/Linux 4.4.0, BuildID[sha1]=9407035b1e395a5ddc290090cb29e457beb77381, stripped
Entropy (8bit):	5.87378740269209
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:	socat
File size:	380'328 bytes
MD5:	702aedbf38c1ee6af51862a7988456ff
SHA1:	190082382787c2eb99d175210f1ce20b51d95708
SHA256:	dc5853ef949bcdc092f61544ae9b7c87b003cdc8d7fc0641b09f8414b2607e25
SHA512:	40b675272660b30ef076f6a47601deb26165f49ef14b5a8825a34e2b35ba70583f6152396f3491f997164b2b577ae93176b828367edbb524e211aebf0db19066
SSDEEP:	6144:V9SFMi4OWEoiQykMg3/iO6rHTqkw3FPsq+rmq:V9Numfo3qkwVPsq+rm
TLSH:	C6844B05DA72287CD586C0344B7B82727630F8FD9322766FBB8D9A303DA5DE4562DB21
File Content Preview:	.ELF..............>.....p.......@...................@.8...@.............@.......@.......@........................................................................................................................J.......J.......................P.......P.....

Network Behavior

Download Network PCAP: filtered – full

Network Port Distribution

Total Packets: 11
• 443 (HTTPS)
• 80 (HTTP)

TCP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Apr 2, 2025 14:27:53.502327919 CEST	43928	443	192.168.2.23	91.189.91.42
Apr 2, 2025 14:27:58.877408981 CEST	42836	443	192.168.2.23	91.189.91.43
Apr 2, 2025 14:27:59.902138948 CEST	42516	80	192.168.2.23	109.202.202.202
Apr 2, 2025 14:28:11.163902998 CEST	39248	443	192.168.2.23	34.249.145.219
Apr 2, 2025 14:28:11.163986921 CEST	443	39248	34.249.145.219	192.168.2.23
Apr 2, 2025 14:28:11.164134026 CEST	39248	443	192.168.2.23	34.249.145.219
Apr 2, 2025 14:28:11.164880991 CEST	39248	443	192.168.2.23	34.249.145.219
Apr 2, 2025 14:28:11.164912939 CEST	443	39248	34.249.145.219	192.168.2.23
Apr 2, 2025 14:28:13.979293108 CEST	43928	443	192.168.2.23	91.189.91.42
Apr 2, 2025 14:28:26.265907049 CEST	42836	443	192.168.2.23	91.189.91.43
Apr 2, 2025 14:28:30.361052036 CEST	42516	80	192.168.2.23	109.202.202.202
Apr 2, 2025 14:28:54.933566093 CEST	43928	443	192.168.2.23	91.189.91.42
Apr 2, 2025 14:29:11.156420946 CEST	39248	443	192.168.2.23	34.249.145.219
Apr 2, 2025 14:29:11.200273991 CEST	443	39248	34.249.145.219	192.168.2.23

System Behavior

Analysis Process: socat PID: 6230, Parent PID: 6153

General

Start time (UTC):	12:27:53
Start date (UTC):	02/04/2025
Path:	/tmp/socat
Arguments:	/tmp/socat
File size:	380328 bytes
MD5 hash:	702aedbf38c1ee6af51862a7988456ff

File Activities

File Opened

File Read

Chronological Activities

Analysis Process: dash PID: 6283, Parent PID: 4331

General

Start time (UTC):	12:29:10
Start date (UTC):	02/04/2025
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Process Activities

Process Overlayed (Exec)

Chronological Activities

Analysis Process: rm PID: 6283, Parent PID: 4331

General

Start time (UTC):	12:29:10
Start date (UTC):	02/04/2025
Path:	/usr/bin/rm
Arguments:	rm -f /tmp/tmp.CWBTWjrGh6 /tmp/tmp.En8661hFvT /tmp/tmp.NMKRCl0XyI
File size:	72056 bytes
MD5 hash:	aa2b5496fdbfd88e38791ab81f90b95b

File Activities

File Opened

File Deleted

File Read

Chronological Activities

Analysis Process: dash PID: 6284, Parent PID: 4331

General

Start time (UTC):	12:29:10
Start date (UTC):	02/04/2025
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Process Activities

Process Overlayed (Exec)

Chronological Activities

Analysis Process: rm PID: 6284, Parent PID: 4331

General

Start time (UTC):	12:29:10
Start date (UTC):	02/04/2025
Path:	/usr/bin/rm
Arguments:	rm -f /tmp/tmp.CWBTWjrGh6 /tmp/tmp.En8661hFvT /tmp/tmp.NMKRCl0XyI
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 socat

Overview

General Information

Detection

Signatures

Classification

General Information

Runtime Messages

Process Tree

Yara Signatures

Initial Sample

Suricata Signatures

Joe Sandbox Signatures

Networking

System Summary

Persistence and Installation Behavior

Mitre Att&ck Matrix

Malware Configuration

Behavior Graph

Screenshots

Thumbnails

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

Dropped Files

Domains

URLs

Domains and IPs

Contacted Domains

URLs from Memory and Binaries

World Map of Contacted IPs

Public IPs

Joe Sandbox View / Context

IPs

Domains

ASNs

JA3 Fingerprints

Dropped Files

Created / dropped Files

Static File Info

General

Network Behavior

Network Port Distribution

TCP Packets

System Behavior

Analysis Process: socat PID: 6230, Parent PID: 6153

General

File Activities

File Opened

File Read

Chronological Activities

Analysis Process: dash PID: 6283, Parent PID: 4331

General

Process Activities

Process Overlayed (Exec)

Chronological Activities

Analysis Process: rm PID: 6283, Parent PID: 4331

General

File Activities

File Opened

File Deleted

File Read

Chronological Activities

Analysis Process: dash PID: 6284, Parent PID: 4331

General

Process Activities

Process Overlayed (Exec)

Chronological Activities

Analysis Process: rm PID: 6284, Parent PID: 4331

General

File Activities

File Opened

File Deleted

File Read

Linux Analysis Report
socat