Malware Analysis Report

2025-03-14 22:56

Sample ID 240406-11nhpsda88
Target XClient.exe
SHA256 d3f6f02154e3e49f3e2ed67564ee90fc9c443732287290036fc38f978ad08859
Tags
xworm persistence rat 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

d3f6f02154e3e49f3e2ed67564ee90fc9c443732287290036fc38f978ad08859

Threat Level: Known bad

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

Malicious Activity Summary

xworm persistence rat trojan

Xworm

Xworm family

Detect Xworm Payload

Loads dropped DLL

Drops startup file

Executes dropped EXE

Checks computer location settings

Looks up external IP address via web service

Adds Run key to start application

Enumerates physical storage devices

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Uses Task Scheduler COM API

Creates scheduled task(s)

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-06 22:07

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

2024-04-06 22:07

Reported

2024-04-06 22:09

Platform

win7-20231129-en

Max time kernel

157s

Max time network

159s

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
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\XClient.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\XClient.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\XClient.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\XClient.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe" C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A

Looks up external IP address via web service

Description Indicator Process Target
N/A ip-api.com N/A 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 behavior: EnumeratesProcesses

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

Suspicious use of SetWindowsHookEx

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

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 "XClient" /tr "C:\Users\Admin\AppData\Roaming\XClient.exe"

C:\Windows\system32\taskeng.exe

taskeng.exe {D082EC94-CCDA-426F-9F8F-8E07BFC5C41A} S-1-5-21-3627615824-4061627003-3019543961-1000:SCFGBRBT\Admin:Interactive:[1]

C:\Users\Admin\AppData\Roaming\XClient.exe

C:\Users\Admin\AppData\Roaming\XClient.exe

C:\Users\Admin\AppData\Roaming\XClient.exe

C:\Users\Admin\AppData\Roaming\XClient.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 ip-api.com udp
US 208.95.112.1:80 ip-api.com tcp
US 8.8.8.8:53 cell-modification.gl.at.ply.gg udp
US 147.185.221.19:21162 cell-modification.gl.at.ply.gg tcp
US 147.185.221.19:21162 cell-modification.gl.at.ply.gg tcp
US 147.185.221.19:21162 cell-modification.gl.at.ply.gg tcp
US 147.185.221.19:21162 cell-modification.gl.at.ply.gg tcp
US 147.185.221.19:21162 cell-modification.gl.at.ply.gg tcp
US 147.185.221.19:21162 cell-modification.gl.at.ply.gg tcp
US 147.185.221.19:21162 cell-modification.gl.at.ply.gg tcp
US 147.185.221.19:21162 cell-modification.gl.at.ply.gg tcp
US 147.185.221.19:21162 cell-modification.gl.at.ply.gg tcp
US 147.185.221.19:21162 cell-modification.gl.at.ply.gg tcp
US 147.185.221.19:21162 cell-modification.gl.at.ply.gg tcp
US 147.185.221.19:21162 cell-modification.gl.at.ply.gg tcp
US 147.185.221.19:21162 cell-modification.gl.at.ply.gg tcp
US 147.185.221.19:21162 cell-modification.gl.at.ply.gg tcp

Files

memory/2004-0-0x0000000000A80000-0x0000000000A9A000-memory.dmp

memory/2004-1-0x000007FEF5160000-0x000007FEF5B4C000-memory.dmp

memory/2004-2-0x000000001B550000-0x000000001B5D0000-memory.dmp

memory/2004-7-0x000007FEF5160000-0x000007FEF5B4C000-memory.dmp

memory/2004-8-0x000000001B550000-0x000000001B5D0000-memory.dmp

C:\Users\Admin\AppData\Roaming\XClient.exe

MD5 4de5ce7dd35af1a3c2cfd2442a169969
SHA1 556f961c2e7c46c13b858b134d595e27d6be1a76
SHA256 d3f6f02154e3e49f3e2ed67564ee90fc9c443732287290036fc38f978ad08859
SHA512 0e314666943f515d833f29c8aef3a1d397caab661939d32df47776b35d044309e07917f19981bbb3ee09263a6ba4a8e149e83bdd3b744942adfdd36a8b9401a1

memory/1992-12-0x0000000000FB0000-0x0000000000FCA000-memory.dmp

memory/1992-13-0x000007FEF5160000-0x000007FEF5B4C000-memory.dmp

memory/1992-14-0x000007FEF5160000-0x000007FEF5B4C000-memory.dmp

memory/2004-16-0x0000000001FB0000-0x0000000001FBC000-memory.dmp

memory/2580-18-0x000007FEF5160000-0x000007FEF5B4C000-memory.dmp

memory/2580-19-0x000007FEF5160000-0x000007FEF5B4C000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-06 22:07

Reported

2024-04-06 22:09

Platform

win10v2004-20240319-en

Max time kernel

150s

Max time network

156s

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-1-5-21-817259280-2658881748-983986378-1000\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\XClient.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\XClient.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\XClient.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\XClient.exe N/A

Loads dropped DLL

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

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-817259280-2658881748-983986378-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe" C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A

Looks up external IP address via web service

Description Indicator Process Target
N/A ip-api.com N/A 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 behavior: EnumeratesProcesses

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

Suspicious use of SetWindowsHookEx

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 392 wrote to memory of 4508 N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe C:\Windows\System32\schtasks.exe
PID 392 wrote to memory of 4508 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 "XClient" /tr "C:\Users\Admin\AppData\Roaming\XClient.exe"

C:\Users\Admin\AppData\Roaming\XClient.exe

C:\Users\Admin\AppData\Roaming\XClient.exe

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1940 --field-trial-handle=2260,i,4762972005863767630,9297428255150568035,262144 --variations-seed-version /prefetch:8

C:\Users\Admin\AppData\Roaming\XClient.exe

C:\Users\Admin\AppData\Roaming\XClient.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 23.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 8.192.122.92.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 ip-api.com udp
US 208.95.112.1:80 ip-api.com tcp
US 8.8.8.8:53 11.2.37.23.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 1.112.95.208.in-addr.arpa udp
US 8.8.8.8:53 cell-modification.gl.at.ply.gg udp
US 147.185.221.19:21162 cell-modification.gl.at.ply.gg tcp
US 8.8.8.8:53 19.221.185.147.in-addr.arpa udp
NL 142.251.39.110:443 tcp
NL 142.250.179.138:443 tcp
US 147.185.221.19:21162 cell-modification.gl.at.ply.gg tcp
US 147.185.221.19:21162 cell-modification.gl.at.ply.gg tcp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 147.185.221.19:21162 cell-modification.gl.at.ply.gg tcp
US 147.185.221.19:21162 cell-modification.gl.at.ply.gg tcp
US 147.185.221.19:21162 cell-modification.gl.at.ply.gg tcp
US 8.8.8.8:53 134.71.91.104.in-addr.arpa udp
US 147.185.221.19:21162 cell-modification.gl.at.ply.gg tcp
US 147.185.221.19:21162 cell-modification.gl.at.ply.gg tcp
US 8.8.8.8:53 chromewebstore.googleapis.com udp
US 8.8.8.8:53 chromewebstore.googleapis.com udp
DE 142.250.185.202:443 chromewebstore.googleapis.com tcp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 202.185.250.142.in-addr.arpa udp
US 147.185.221.19:21162 cell-modification.gl.at.ply.gg tcp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp
US 147.185.221.19:21162 cell-modification.gl.at.ply.gg tcp
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 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 147.185.221.19:21162 cell-modification.gl.at.ply.gg tcp
US 147.185.221.19:21162 cell-modification.gl.at.ply.gg tcp
US 147.185.221.19:21162 cell-modification.gl.at.ply.gg tcp
US 147.185.221.19:21162 cell-modification.gl.at.ply.gg tcp
US 147.185.221.19:21162 cell-modification.gl.at.ply.gg tcp
US 147.185.221.19:21162 cell-modification.gl.at.ply.gg tcp
US 8.8.8.8:53 208.143.182.52.in-addr.arpa udp
US 147.185.221.19:21162 cell-modification.gl.at.ply.gg tcp

Files

memory/392-0-0x0000000000A80000-0x0000000000A9A000-memory.dmp

memory/392-1-0x00007FF9BCA80000-0x00007FF9BD541000-memory.dmp

memory/392-2-0x00000000013F0000-0x0000000001400000-memory.dmp

memory/392-7-0x00007FF9BCA80000-0x00007FF9BD541000-memory.dmp

memory/392-8-0x00000000013F0000-0x0000000001400000-memory.dmp

C:\Users\Admin\AppData\Roaming\XClient.exe

MD5 4de5ce7dd35af1a3c2cfd2442a169969
SHA1 556f961c2e7c46c13b858b134d595e27d6be1a76
SHA256 d3f6f02154e3e49f3e2ed67564ee90fc9c443732287290036fc38f978ad08859
SHA512 0e314666943f515d833f29c8aef3a1d397caab661939d32df47776b35d044309e07917f19981bbb3ee09263a6ba4a8e149e83bdd3b744942adfdd36a8b9401a1

memory/3016-11-0x00007FF9BCA80000-0x00007FF9BD541000-memory.dmp

memory/3016-13-0x00007FF9BCA80000-0x00007FF9BD541000-memory.dmp

memory/392-14-0x000000001C2A0000-0x000000001C2DA000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\tmp6165.tmp

MD5 1b942faa8e8b1008a8c3c1004ba57349
SHA1 cd99977f6c1819b12b33240b784ca816dfe2cb91
SHA256 555ccb7ecd9ae52a75135fdd81ab443a49d5785b0621ed6468d28c4234e46ccc
SHA512 5aee3d59478d41ddd5885c99b394c9c4983064e2b3528db1a3f7fc289662bced4f57d072517bbe7573c6d1789435e987ef1aa9cc91f372bcfd30bc016675fa43

memory/392-20-0x0000000001360000-0x000000000136C000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\XClient.exe.log

MD5 2ff39f6c7249774be85fd60a8f9a245e
SHA1 684ff36b31aedc1e587c8496c02722c6698c1c4e
SHA256 e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced
SHA512 1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

memory/2940-23-0x00007FF9BCA80000-0x00007FF9BD541000-memory.dmp

memory/2940-24-0x00007FF9BCA80000-0x00007FF9BD541000-memory.dmp