Malware Analysis Report

2024-09-11 14:54

Sample ID 240609-f8xfcsfa88
Target e5dfe8f83fca027dea3ecc628e7850c4.bin
SHA256 7e658ae627231fa666375b4588278cc20568a9862b19b268e12f8f4e468bacb3
Tags
xworm persistence rat trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

7e658ae627231fa666375b4588278cc20568a9862b19b268e12f8f4e468bacb3

Threat Level: Known bad

The file e5dfe8f83fca027dea3ecc628e7850c4.bin was found to be: Known bad.

Malicious Activity Summary

xworm persistence rat trojan

Xworm family

Detect Xworm Payload

Xworm

Drops startup file

Legitimate hosting services abused for malware hosting/C2

Adds Run key to start application

Enumerates physical storage devices

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

MITRE ATT&CK Matrix V13

Initial Access
TA0001
Execution
TA0002
Persistence
TA0003
Boot or Logon Autostart Execution
T1547
Registry Run Keys / Startup Folder
T1547.001
Privilege Escalation
TA0004
Boot or Logon Autostart Execution
T1547
Registry Run Keys / Startup Folder
T1547.001
Defense Evasion
TA0005
Modify Registry
T1112
Credential Access
TA0006
Discovery
TA0007
System Information Discovery
T1082
Lateral Movement
TA0008
Collection
TA0009
Exfiltration
TA0010
Command and Control
TA0011
Web Service
T1102
Impact
TA0040
Resource Development
TA0042
Reconnaissance
TA0043

Analysis: static1

Detonation Overview

Reported

2024-06-09 05:33

Signatures

Detect Xworm Payload

Description Indicator Process Target
N/A N/A N/A N/A

Xworm family

xworm

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-09 05:33

Reported

2024-06-09 05:35

Platform

win7-20240508-en

Max time kernel

128s

Max time network

141s

Command Line

"C:\Users\Admin\AppData\Local\Temp\e5dfe8f83fca027dea3ecc628e7850c4.exe"

Signatures

Detect Xworm Payload

Description Indicator Process Target
N/A N/A N/A N/A

Xworm

trojan rat xworm

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk C:\Users\Admin\AppData\Local\Temp\e5dfe8f83fca027dea3ecc628e7850c4.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk C:\Users\Admin\AppData\Local\Temp\e5dfe8f83fca027dea3ecc628e7850c4.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000\Software\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe" C:\Users\Admin\AppData\Local\Temp\e5dfe8f83fca027dea3ecc628e7850c4.exe N/A

Legitimate hosting services abused for malware hosting/C2

Description Indicator Process Target
N/A pastebin.com N/A N/A
N/A pastebin.com N/A N/A

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\e5dfe8f83fca027dea3ecc628e7850c4.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\e5dfe8f83fca027dea3ecc628e7850c4.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\e5dfe8f83fca027dea3ecc628e7850c4.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\e5dfe8f83fca027dea3ecc628e7850c4.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\e5dfe8f83fca027dea3ecc628e7850c4.exe

"C:\Users\Admin\AppData\Local\Temp\e5dfe8f83fca027dea3ecc628e7850c4.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 pastebin.com udp
US 172.67.19.24:443 pastebin.com tcp
US 147.185.221.19:60312 tcp
US 147.185.221.19:60312 tcp
US 147.185.221.19:60312 tcp
US 147.185.221.19:60312 tcp
US 147.185.221.19:60312 tcp

Files

memory/1520-0-0x000007FEF5F83000-0x000007FEF5F84000-memory.dmp

memory/1520-1-0x00000000000A0000-0x00000000000BA000-memory.dmp

memory/1520-6-0x000007FEF5F80000-0x000007FEF696C000-memory.dmp

memory/1520-7-0x000007FEF5F83000-0x000007FEF5F84000-memory.dmp

memory/1520-8-0x000007FEF5F80000-0x000007FEF696C000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-09 05:33

Reported

2024-06-09 05:35

Platform

win10v2004-20240508-en

Max time kernel

148s

Max time network

157s

Command Line

"C:\Users\Admin\AppData\Local\Temp\e5dfe8f83fca027dea3ecc628e7850c4.exe"

Signatures

Detect Xworm Payload

Description Indicator Process Target
N/A N/A N/A N/A

Xworm

trojan rat xworm

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk C:\Users\Admin\AppData\Local\Temp\e5dfe8f83fca027dea3ecc628e7850c4.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk C:\Users\Admin\AppData\Local\Temp\e5dfe8f83fca027dea3ecc628e7850c4.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe" C:\Users\Admin\AppData\Local\Temp\e5dfe8f83fca027dea3ecc628e7850c4.exe N/A

Legitimate hosting services abused for malware hosting/C2

Description Indicator Process Target
N/A pastebin.com N/A N/A
N/A pastebin.com N/A N/A

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\e5dfe8f83fca027dea3ecc628e7850c4.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\e5dfe8f83fca027dea3ecc628e7850c4.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\e5dfe8f83fca027dea3ecc628e7850c4.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\e5dfe8f83fca027dea3ecc628e7850c4.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\e5dfe8f83fca027dea3ecc628e7850c4.exe

"C:\Users\Admin\AppData\Local\Temp\e5dfe8f83fca027dea3ecc628e7850c4.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 91.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 183.142.211.20.in-addr.arpa udp
US 8.8.8.8:53 20.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 pastebin.com udp
US 104.20.4.235:443 pastebin.com tcp
US 8.8.8.8:53 235.4.20.104.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 147.185.221.19:60312 tcp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 147.185.221.19:60312 tcp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 147.185.221.19:60312 tcp
US 147.185.221.19:60312 tcp
US 8.8.8.8:53 23.236.111.52.in-addr.arpa udp
US 147.185.221.19:60312 tcp
US 147.185.221.19:60312 tcp
US 8.8.8.8:53 67.112.168.52.in-addr.arpa udp

Files

memory/1104-0-0x00007FFE97363000-0x00007FFE97365000-memory.dmp

memory/1104-1-0x0000000000E60000-0x0000000000E7A000-memory.dmp

memory/1104-6-0x00007FFE97360000-0x00007FFE97E21000-memory.dmp

memory/1104-7-0x00007FFE97363000-0x00007FFE97365000-memory.dmp

memory/1104-8-0x00007FFE97360000-0x00007FFE97E21000-memory.dmp