Malware Analysis Report

2024-11-16 13:41

Sample ID 240531-pxa8eshg75
Target XClient.zip
SHA256 101435d2949c34334d71b9cc9e4d2a61cf9cc7930e499ebb132f44ceada61194
Tags
xworm persistence rat spyware stealer trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

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

101435d2949c34334d71b9cc9e4d2a61cf9cc7930e499ebb132f44ceada61194

Threat Level: Known bad

The file XClient.zip was found to be: Known bad.

Malicious Activity Summary

xworm persistence rat spyware stealer trojan

Xworm

Detect Xworm Payload

Xworm family

Reads user/profile data of web browsers

Executes dropped EXE

Checks computer location settings

Drops startup file

Adds Run key to start application

Enumerates physical storage devices

Unsigned PE

Creates scheduled task(s)

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

Uses Task Scheduler COM API

Modifies registry class

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-31 12:42

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

2024-05-31 12:42

Reported

2024-05-31 12:44

Platform

win10v2004-20240508-en

Max time kernel

150s

Max time network

150s

Command Line

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

Signatures

Detect Xworm Payload

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

Xworm

trojan rat xworm

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A

Drops startup file

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

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\AMD Graphics Manager N/A
N/A N/A C:\Users\Admin\AppData\Roaming\AMD Graphics Manager N/A

Reads user/profile data of web browsers

spyware stealer

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\AMD Graphics Manager = "C:\\Users\\Admin\\AppData\\Roaming\\AMD Graphics Manager" C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A

Enumerates physical storage devices

Creates scheduled task(s)

persistence
Description Indicator Process Target
N/A N/A C:\Windows\System32\schtasks.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\AMD Graphics Manager N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1572 wrote to memory of 924 N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe C:\Windows\System32\schtasks.exe
PID 1572 wrote to memory of 924 N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe C:\Windows\System32\schtasks.exe

Uses Task Scheduler COM API

persistence

Processes

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

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

C:\Windows\System32\schtasks.exe

"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "AMD Graphics Manager" /tr "C:\Users\Admin\AppData\Roaming\AMD Graphics Manager"

C:\Users\Admin\AppData\Roaming\AMD Graphics Manager

"C:\Users\Admin\AppData\Roaming\AMD Graphics Manager"

C:\Windows\system32\notepad.exe

"C:\Windows\system32\notepad.exe"

C:\Users\Admin\AppData\Roaming\AMD Graphics Manager

"C:\Users\Admin\AppData\Roaming\AMD Graphics Manager"

Network

Country Destination Domain Proto
US 8.8.8.8:53 249.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 5.181.190.20.in-addr.arpa udp
NL 23.62.61.99:443 www.bing.com tcp
US 8.8.8.8:53 99.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
NL 91.92.241.69:5555 tcp
US 8.8.8.8:53 69.241.92.91.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 30.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 23.173.189.20.in-addr.arpa udp

Files

memory/1572-0-0x00007FF8010B3000-0x00007FF8010B5000-memory.dmp

memory/1572-1-0x00000000000B0000-0x00000000000C6000-memory.dmp

memory/1572-5-0x00007FF8010B0000-0x00007FF801B71000-memory.dmp

memory/1572-6-0x000000001C440000-0x000000001C790000-memory.dmp

memory/1572-7-0x00007FF8010B0000-0x00007FF801B71000-memory.dmp

C:\Users\Admin\AppData\Roaming\AMD Graphics Manager

MD5 0f803689398c092ad9ae274d5c7507d6
SHA1 693161863fa62cb65e7f3102d55087a9bf816889
SHA256 0c336bb9258f45ded239bfd2a721a779c3a467cfd177d9ab75841d6eb61d2a8a
SHA512 1fed05b278b8243c1e45c34a1eca78492fb24d18296feac978bd54528359d2c07a783bff434921a26a96ba122a8dc9da6d00b9cdda09c6c8569910d0472080f8

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-31 12:42

Reported

2024-05-31 12:43

Platform

win11-20240419-en

Max time kernel

72s

Max time network

70s

Command Line

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

Signatures

Detect Xworm Payload

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

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\AMD Graphics Manager N/A

Reads user/profile data of web browsers

spyware stealer

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-1474490143-3221292397-4168103503-1000\Software\Microsoft\Windows\CurrentVersion\Run\AMD Graphics Manager = "C:\\Users\\Admin\\AppData\\Roaming\\AMD Graphics Manager" C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A

Enumerates physical storage devices

Creates scheduled task(s)

persistence
Description Indicator Process Target
N/A N/A C:\Windows\System32\schtasks.exe N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-1474490143-3221292397-4168103503-1000_Classes\Local Settings\MuiCache C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\MiniSearchHost.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\AMD Graphics Manager N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\MiniSearchHost.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3904 wrote to memory of 1392 N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe C:\Windows\System32\schtasks.exe
PID 3904 wrote to memory of 1392 N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe C:\Windows\System32\schtasks.exe

Uses Task Scheduler COM API

persistence

Processes

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

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

C:\Windows\System32\schtasks.exe

"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "AMD Graphics Manager" /tr "C:\Users\Admin\AppData\Roaming\AMD Graphics Manager"

C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\MiniSearchHost.exe

"C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\MiniSearchHost.exe" -ServerName:MiniSearchUI.AppXj3y73at8fy1htwztzxs68sxx1v7cksp7.mca

C:\Users\Admin\AppData\Roaming\AMD Graphics Manager

"C:\Users\Admin\AppData\Roaming\AMD Graphics Manager"

Network

Country Destination Domain Proto
NL 91.92.241.69:5555 tcp
US 8.8.8.8:53 69.241.92.91.in-addr.arpa udp

Files

memory/3904-0-0x0000000000300000-0x0000000000316000-memory.dmp

memory/3904-1-0x00007FF94CB73000-0x00007FF94CB75000-memory.dmp

memory/3904-5-0x00007FF94CB70000-0x00007FF94D632000-memory.dmp

memory/3904-6-0x000000001C430000-0x000000001C780000-memory.dmp

memory/3904-7-0x00007FF94CB73000-0x00007FF94CB75000-memory.dmp

memory/3904-8-0x00007FF94CB70000-0x00007FF94D632000-memory.dmp

C:\Users\Admin\AppData\Local\Packages\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\TempState\SearchHoverUnifiedTileModelCache.dat

MD5 18951ad4190ed728ba23e932e0c6e0db
SHA1 fa2d16fcbc3defd07cb8f21d8ea4793a21f261f0
SHA256 66607b009c345a8e70fc1e58ab8a13bbea0e370c8d75f16d2cce5b876a748915
SHA512 a67237089efa8615747bdc6cfe0afc977dc54cfd624a8d2e5124a441c204f1ec58ee7cfbbc105ddc2c18d4f254b9e124d71630bcdba0253d41a96890104f2fff

C:\Users\Admin\AppData\Roaming\AMD Graphics Manager

MD5 0f803689398c092ad9ae274d5c7507d6
SHA1 693161863fa62cb65e7f3102d55087a9bf816889
SHA256 0c336bb9258f45ded239bfd2a721a779c3a467cfd177d9ab75841d6eb61d2a8a
SHA512 1fed05b278b8243c1e45c34a1eca78492fb24d18296feac978bd54528359d2c07a783bff434921a26a96ba122a8dc9da6d00b9cdda09c6c8569910d0472080f8