Edit tour

Linux Analysis Report
socat

Overview

General Information

Sample name:	socat
Analysis ID:	1653510
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:	1653510
Start date and time:	2025-04-01 11:04:58 +02:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 10m 17s
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@2/0
Cookbook Comments:	Analysis time extended to 480s due to sleep detection in submitted sample

Runtime Messages

Command:	/tmp/socat
PID:	5479
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: 5479, Parent: 5404, MD5: 702aedbf38c1ee6af51862a7988456ff) Arguments: /tmp/socat

dash New Fork (PID: 5543, Parent: 3632)

rm (PID: 5543, Parent: 3632, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.FUmv6IINKK /tmp/tmp.vQOoUDuwgu /tmp/tmp.RqTtrnclvJ

dash New Fork (PID: 5544, Parent: 3632)

rm (PID: 5544, Parent: 3632, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.FUmv6IINKK /tmp/tmp.vQOoUDuwgu /tmp/tmp.RqTtrnclvJ

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: 54.171.230.55
Source: unknown	TCP traffic detected without corresponding DNS query: 54.171.230.55
Source: unknown	TCP traffic detected without corresponding DNS query: 54.171.230.55
Source: unknown	TCP traffic detected without corresponding DNS query: 54.171.230.55
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: 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 34590 -> 443
Source: unknown	Network traffic detected: HTTP traffic on port 443 -> 37910
Source: unknown	Network traffic detected: HTTP traffic on port 37910 -> 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@2/0

Source: /usr/bin/dash (PID: 5543)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.FUmv6IINKK /tmp/tmp.vQOoUDuwgu /tmp/tmp.RqTtrnclvJ			Jump to behavior
Source: /usr/bin/dash (PID: 5544)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.FUmv6IINKK /tmp/tmp.vQOoUDuwgu /tmp/tmp.RqTtrnclvJ			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 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

⊘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

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://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	Flag	ASN	ASN Name	Malicious
54.171.230.55	unknown	United States		16509	AMAZON-02US	false
54.217.10.153	unknown	United States		16509	AMAZON-02US	false

Joe Sandbox View / Context

IPs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link
54.171.230.55	na.elf	Get hash	malicious	Prometei	Browse
	killua.arm5.elf	Get hash	malicious	Unknown	Browse
	ub8ehJSePAfc9FYqZIT6.mips.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	eehah4.elf	Get hash	malicious	Unknown	Browse
	sshd.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
54.217.10.153	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	Execution.i586.elf	Get hash	malicious	Gafgyt, Mirai	Browse
	havoc.spc.elf	Get hash	malicious	Mirai, Okiru	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	boatnet.arm.elf	Get hash	malicious	Mirai	Browse
	ppc.elf	Get hash	malicious	Unknown	Browse
	mips.elf	Get hash	malicious	Mirai	Browse
	mpsl.elf	Get hash	malicious	Mirai	Browse

Domains

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
daisy.ubuntu.com	killua.x86_64.elf	Get hash	malicious	Unknown	Browse	162.213.35.25
	killua.mipsel.elf	Get hash	malicious	Unknown	Browse	162.213.35.25
	killua.arm6.elf	Get hash	malicious	Unknown	Browse	162.213.35.24
	killua.arm4.elf	Get hash	malicious	Unknown	Browse	162.213.35.25
	killua.mips.elf	Get hash	malicious	Unknown	Browse	162.213.35.24
	miraint.ppc.elf	Get hash	malicious	Mirai	Browse	162.213.35.25
	miraint.armhf.elf	Get hash	malicious	Mirai	Browse	162.213.35.24
	miraint.sh4.elf	Get hash	malicious	Mirai	Browse	162.213.35.24
	miraint.arm64.elf	Get hash	malicious	Mirai	Browse	162.213.35.24
	mirai.arm64.elf	Get hash	malicious	Mirai	Browse	162.213.35.24

ASNs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
AMAZON-02US	na.elf	Get hash	malicious	Prometei	Browse	13.213.51.196
	na.elf	Get hash	malicious	Prometei	Browse	34.243.160.129
	na.elf	Get hash	malicious	Prometei	Browse	34.249.145.219
	https://click.pstmrk.it/3s/zyn.free.hr%2F/uXHt/uV68AQ/AQ/0077beba-9050-4a8e-b7ce-7b048a1b6ed6/2/GPgWu-krWI	Get hash	malicious	Unknown	Browse	3.146.16.147
	na.elf	Get hash	malicious	Prometei	Browse	13.213.51.196
	na.elf	Get hash	malicious	Prometei	Browse	13.213.51.196
	eoIIBcxUj3.exe	Get hash	malicious	FormBook	Browse	13.248.213.45
	na.elf	Get hash	malicious	Prometei	Browse	34.249.145.219
	.i.elf	Get hash	malicious	Unknown	Browse	34.249.145.219
	na.elf	Get hash	malicious	Prometei	Browse	34.249.145.219
AMAZON-02US	na.elf	Get hash	malicious	Prometei	Browse	13.213.51.196
	na.elf	Get hash	malicious	Prometei	Browse	34.243.160.129
	na.elf	Get hash	malicious	Prometei	Browse	34.249.145.219
	https://click.pstmrk.it/3s/zyn.free.hr%2F/uXHt/uV68AQ/AQ/0077beba-9050-4a8e-b7ce-7b048a1b6ed6/2/GPgWu-krWI	Get hash	malicious	Unknown	Browse	3.146.16.147
	na.elf	Get hash	malicious	Prometei	Browse	13.213.51.196
	na.elf	Get hash	malicious	Prometei	Browse	13.213.51.196
	eoIIBcxUj3.exe	Get hash	malicious	FormBook	Browse	13.248.213.45
	na.elf	Get hash	malicious	Prometei	Browse	34.249.145.219
	.i.elf	Get hash	malicious	Unknown	Browse	34.249.145.219
	na.elf	Get hash	malicious	Prometei	Browse	34.249.145.219

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: 7
• 443 (HTTPS)
• 53 (DNS)

TCP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Apr 1, 2025 11:05:37.419249058 CEST	34590	443	192.168.2.14	54.217.10.153
Apr 1, 2025 11:06:05.896596909 CEST	37910	443	192.168.2.14	54.171.230.55
Apr 1, 2025 11:06:05.896641970 CEST	443	37910	54.171.230.55	192.168.2.14
Apr 1, 2025 11:06:05.896770000 CEST	37910	443	192.168.2.14	54.171.230.55
Apr 1, 2025 11:06:05.898641109 CEST	37910	443	192.168.2.14	54.171.230.55
Apr 1, 2025 11:06:05.898657084 CEST	443	37910	54.171.230.55	192.168.2.14
Apr 1, 2025 11:07:05.906291008 CEST	37910	443	192.168.2.14	54.171.230.55
Apr 1, 2025 11:07:05.952276945 CEST	443	37910	54.171.230.55	192.168.2.14

UDP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Apr 1, 2025 11:08:23.845063925 CEST	60717	53	192.168.2.14	1.1.1.1
Apr 1, 2025 11:08:23.845208883 CEST	47114	53	192.168.2.14	1.1.1.1
Apr 1, 2025 11:08:23.929605007 CEST	53	47114	1.1.1.1	192.168.2.14
Apr 1, 2025 11:08:23.929632902 CEST	53	60717	1.1.1.1	192.168.2.14

DNS Queries

Timestamp	Source IP	Dest IP	Trans ID	OP Code	Name	Type	Class	DNS over HTTPS
Apr 1, 2025 11:08:23.845063925 CEST	192.168.2.14	1.1.1.1	0x9da2	Standard query (0)	daisy.ubuntu.com	A (IP address)	IN (0x0001)	false
Apr 1, 2025 11:08:23.845208883 CEST	192.168.2.14	1.1.1.1	0xf676	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
Apr 1, 2025 11:08:23.929632902 CEST	1.1.1.1	192.168.2.14	0x9da2	No error (0)	daisy.ubuntu.com		162.213.35.24	A (IP address)	IN (0x0001)	false
Apr 1, 2025 11:08:23.929632902 CEST	1.1.1.1	192.168.2.14	0x9da2	No error (0)	daisy.ubuntu.com		162.213.35.25	A (IP address)	IN (0x0001)	false

System Behavior

Analysis Process: socat PID: 5479, Parent PID: 5404

General

Start time (UTC):	09:05:37
Start date (UTC):	01/04/2025
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: 5543, Parent PID: 3632

General

Start time (UTC):	09:07:05
Start date (UTC):	01/04/2025
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Process Activities

Process Overlayed (Exec)

Chronological Activities

Analysis Process: rm PID: 5543, Parent PID: 3632

General

Start time (UTC):	09:07:05
Start date (UTC):	01/04/2025
Path:	/usr/bin/rm
Arguments:	rm -f /tmp/tmp.FUmv6IINKK /tmp/tmp.vQOoUDuwgu /tmp/tmp.RqTtrnclvJ
File size:	72056 bytes
MD5 hash:	aa2b5496fdbfd88e38791ab81f90b95b

File Activities

File Opened

File Deleted

File Read

Chronological Activities

Analysis Process: dash PID: 5544, Parent PID: 3632

General

Start time (UTC):	09:07:05
Start date (UTC):	01/04/2025
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Process Activities

Process Overlayed (Exec)

Chronological Activities

Analysis Process: rm PID: 5544, Parent PID: 3632

General

Start time (UTC):	09:07:05
Start date (UTC):	01/04/2025
Path:	/usr/bin/rm
Arguments:	rm -f /tmp/tmp.FUmv6IINKK /tmp/tmp.vQOoUDuwgu /tmp/tmp.RqTtrnclvJ
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 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 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

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

UDP Packets

DNS Queries

DNS Answers

System Behavior

Analysis Process: socat PID: 5479, Parent PID: 5404

General

File Activities

File Opened

File Read

Chronological Activities

Analysis Process: dash PID: 5543, Parent PID: 3632

General

Process Activities

Process Overlayed (Exec)

Chronological Activities

Analysis Process: rm PID: 5543, Parent PID: 3632

General

File Activities

File Opened

File Deleted

File Read

Chronological Activities

Analysis Process: dash PID: 5544, Parent PID: 3632

General

Process Activities

Process Overlayed (Exec)

Chronological Activities

Analysis Process: rm PID: 5544, Parent PID: 3632

General

File Activities

File Opened

File Deleted

Linux Analysis Report
socat