Malware Analysis Report

2024-11-16 13:36

Sample ID 240527-t66g5sbe67
Target XClient.exe
SHA256 be1f8d3d9d468d99954e1c1c293a3473eb7f7561c0977ab6f4c0814cbdc514fb
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 Overview

score
10/10

SHA256

be1f8d3d9d468d99954e1c1c293a3473eb7f7561c0977ab6f4c0814cbdc514fb

Threat Level: Known bad

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

Malicious Activity Summary

xworm persistence rat trojan

Xworm family

Xworm

Detect Xworm Payload

Checks computer location settings

Executes dropped EXE

Adds Run key to start application

Enumerates physical storage devices

Unsigned PE

Uses Task Scheduler COM API

Suspicious behavior: EnumeratesProcesses

Creates scheduled task(s)

Suspicious use of AdjustPrivilegeToken

Checks processor information in registry

Enumerates system info in registry

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-27 16:41

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

2024-05-27 16:41

Reported

2024-05-27 16:43

Platform

win10v2004-20240226-en

Max time kernel

149s

Max time network

151s

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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation 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-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe" C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A

Enumerates physical storage devices

Checks processor information in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A

Creates scheduled task(s)

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

Enumerates system info in registry

Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemProductName C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\BIOSVersion C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\BIOSReleaseDate C:\Users\Admin\AppData\Local\Temp\XClient.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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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\Roaming\XClient.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\XClient.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1600 wrote to memory of 4740 N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe C:\Windows\System32\schtasks.exe
PID 1600 wrote to memory of 4740 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=3856 --field-trial-handle=3240,i,13319578961094268484,16557498665191861597,262144 --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 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 136.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 blood-sticker.gl.at.ply.gg udp
US 147.185.221.19:65461 blood-sticker.gl.at.ply.gg tcp
US 8.8.8.8:53 19.221.185.147.in-addr.arpa udp
US 147.185.221.19:65461 blood-sticker.gl.at.ply.gg tcp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
GB 142.250.187.234:443 tcp
US 8.8.8.8:53 164.189.21.2.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 13.107.246.64:443 tcp
US 8.8.8.8:53 18.24.18.2.in-addr.arpa udp
US 147.185.221.19:65461 blood-sticker.gl.at.ply.gg tcp
US 8.8.8.8:53 21.236.111.52.in-addr.arpa udp
US 147.185.221.19:65461 blood-sticker.gl.at.ply.gg tcp
US 147.185.221.19:65461 blood-sticker.gl.at.ply.gg tcp
US 8.8.8.8:53 94.65.42.20.in-addr.arpa udp

Files

memory/1600-0-0x00007FF9872D3000-0x00007FF9872D5000-memory.dmp

memory/1600-1-0x0000000000BE0000-0x0000000000BF0000-memory.dmp

memory/1600-5-0x00007FF9872D0000-0x00007FF987D91000-memory.dmp

memory/1600-6-0x00007FF9872D3000-0x00007FF9872D5000-memory.dmp

memory/1600-7-0x000000001CAB0000-0x000000001CABA000-memory.dmp

memory/1600-8-0x00007FF9872D0000-0x00007FF987D91000-memory.dmp

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

MD5 c5e5eb3185773f042b0b4552b70b730e
SHA1 d9c0dca9263b38ea187e385425a5c786f75d53b0
SHA256 be1f8d3d9d468d99954e1c1c293a3473eb7f7561c0977ab6f4c0814cbdc514fb
SHA512 5660bdf52a4a33a53e8166b32ee4a3a93e4997a32461dc431d7d6369edb8cf97d2aff4413d2926784465cdbc50dbaa1bce58b0bbabc07fdc3c8d19ce2a04eb1b

memory/64-11-0x00007FF9872D0000-0x00007FF987D91000-memory.dmp

memory/64-13-0x00007FF9872D0000-0x00007FF987D91000-memory.dmp

memory/1600-14-0x0000000001370000-0x000000000137C000-memory.dmp

memory/1600-15-0x000000001DC00000-0x000000001E128000-memory.dmp

memory/1600-16-0x00007FF9872D0000-0x00007FF987D91000-memory.dmp

memory/1600-17-0x00007FF9872D0000-0x00007FF987D91000-memory.dmp

memory/1600-18-0x00007FF9872D0000-0x00007FF987D91000-memory.dmp

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

MD5 2ff39f6c7249774be85fd60a8f9a245e
SHA1 684ff36b31aedc1e587c8496c02722c6698c1c4e
SHA256 e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced
SHA512 1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

memory/1600-21-0x00000000013D0000-0x00000000013DA000-memory.dmp

memory/1600-22-0x00007FF9872D0000-0x00007FF987D91000-memory.dmp

memory/1600-23-0x00007FF9872D0000-0x00007FF987D91000-memory.dmp

memory/1600-24-0x00007FF9872D0000-0x00007FF987D91000-memory.dmp