Malware Analysis Report

2024-11-16 13:38

Sample ID 240530-bzxmjshg6z
Target XClient.exe
SHA256 e03842270991c28c9dc59f1a3fd4bba0883fc03d51fd8e64e02c47a324ea6db9
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

e03842270991c28c9dc59f1a3fd4bba0883fc03d51fd8e64e02c47a324ea6db9

Threat Level: Known bad

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

Malicious Activity Summary

xworm persistence rat trojan

Detect Xworm Payload

Xworm

Xworm family

Loads dropped DLL

Drops startup file

Adds Run key to start application

Enumerates physical storage devices

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Suspicious behavior: GetForegroundWindowSpam

Modifies data under HKEY_USERS

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-30 01:35

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

2024-05-30 01:35

Reported

2024-05-30 01:37

Platform

win10-20240404-en

Max time kernel

139s

Max time network

141s

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

Xworm

trojan rat xworm

Drops startup file

Description Indicator Process Target
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\discord.lnk C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\discord.lnk C:\Users\Admin\AppData\Local\Temp\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-1-5-21-873560699-1074803302-2326074425-1000\Software\Microsoft\Windows\CurrentVersion\Run\discord = "C:\\Users\\Admin\\AppData\\Roaming\\discord.exe" C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A

Enumerates physical storage devices

Modifies data under HKEY_USERS

Description Indicator Process Target
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\AccentColor = "4292311040" C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\StartColorMenu = "4288567808" C:\Windows\system32\LogonUI.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentColorMenu = "4292311040" C:\Windows\system32\LogonUI.exe N/A
Set value (data) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentPalette = a6d8ff0076b9ed00429ce3000078d700005a9e000042750000264200f7630c00 C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History\AutoColor = "0" C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColorBalance = "89" C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglow = "3288365271" C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationGlassAttribute = "1" C:\Windows\system32\LogonUI.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent C:\Windows\system32\LogonUI.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationBlurBalance = "1" C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\EnableWindowColorization = "1" C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColor = "3288365271" C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglowBalance = "10" C:\Windows\system32\LogonUI.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
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 behavior: GetForegroundWindowSpam

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: 33 N/A C:\Windows\system32\AUDIODG.EXE N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\system32\AUDIODG.EXE N/A
Token: SeShutdownPrivilege N/A C:\Windows\SYSTEM32\shutdown.exe N/A
Token: SeRemoteShutdownPrivilege N/A C:\Windows\SYSTEM32\shutdown.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
N/A N/A C:\Windows\system32\LogonUI.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1388 wrote to memory of 5000 N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe C:\Windows\SYSTEM32\shutdown.exe
PID 1388 wrote to memory of 5000 N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe C:\Windows\SYSTEM32\shutdown.exe

Processes

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

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

C:\Windows\system32\AUDIODG.EXE

C:\Windows\system32\AUDIODG.EXE 0x410

C:\Windows\SYSTEM32\shutdown.exe

shutdown.exe /f /r /t 0

C:\Windows\system32\LogonUI.exe

"LogonUI.exe" /flags:0x0 /state0:0xa3af0855 /state1:0x41c64e6d

Network

Country Destination Domain Proto
US 8.8.8.8:53 tel-form.gl.at.ply.gg udp
US 147.185.221.20:2421 tel-form.gl.at.ply.gg tcp
US 8.8.8.8:53 20.221.185.147.in-addr.arpa udp
US 147.185.221.20:2421 tel-form.gl.at.ply.gg tcp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp
US 147.185.221.20:2421 tel-form.gl.at.ply.gg tcp
US 147.185.221.20:2421 tel-form.gl.at.ply.gg tcp
US 147.185.221.20:2421 tel-form.gl.at.ply.gg tcp
US 8.8.8.8:53 4.173.189.20.in-addr.arpa udp

Files

memory/1388-0-0x00007FFF18473000-0x00007FFF18474000-memory.dmp

memory/1388-1-0x0000000000F20000-0x0000000000F38000-memory.dmp

memory/1388-6-0x00007FFF18470000-0x00007FFF18E5C000-memory.dmp

memory/1388-7-0x00007FFF18473000-0x00007FFF18474000-memory.dmp

memory/1388-8-0x00007FFF18470000-0x00007FFF18E5C000-memory.dmp

memory/1388-9-0x00000000033B0000-0x00000000033BC000-memory.dmp

memory/1388-39-0x00000000013D0000-0x000000000140A000-memory.dmp

\Users\Admin\AppData\Local\Temp\tmp10B0.tmp

MD5 1b942faa8e8b1008a8c3c1004ba57349
SHA1 cd99977f6c1819b12b33240b784ca816dfe2cb91
SHA256 555ccb7ecd9ae52a75135fdd81ab443a49d5785b0621ed6468d28c4234e46ccc
SHA512 5aee3d59478d41ddd5885c99b394c9c4983064e2b3528db1a3f7fc289662bced4f57d072517bbe7573c6d1789435e987ef1aa9cc91f372bcfd30bc016675fa43

memory/1388-44-0x0000000001410000-0x000000000149E000-memory.dmp

memory/1388-55-0x000000001D180000-0x000000001D20E000-memory.dmp

memory/1388-84-0x00007FFF18470000-0x00007FFF18E5C000-memory.dmp