Malware Analysis Report

2024-09-11 14:58

Sample ID 240609-1c92ssfh46
Target XClient (1).exe
SHA256 73a25e9ea9ab8041e1cf327ec49c93fccb61b740c671342d0988b4aea4234a0f
Tags
xworm 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: behavioral3

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral4

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

73a25e9ea9ab8041e1cf327ec49c93fccb61b740c671342d0988b4aea4234a0f

Threat Level: Known bad

The file XClient (1).exe was found to be: Known bad.

Malicious Activity Summary

xworm rat trojan

Xworm

Detect Xworm Payload

Xworm family

Loads dropped DLL

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Modifies data under HKEY_USERS

Suspicious use of SetWindowsHookEx

Enumerates system info in registry

Uses Task Scheduler COM API

Checks processor information in registry

Suspicious use of WriteProcessMemory

MITRE ATT&CK Matrix V13

Initial Access
TA0001
Execution
TA0002
Persistence
TA0003
Privilege Escalation
TA0004
Defense Evasion
TA0005
Credential Access
TA0006
Discovery
TA0007
Query Registry
T1012
System Information Discovery
T1082
Lateral Movement
TA0008
Collection
TA0009
Exfiltration
TA0010
Command and Control
TA0011
Impact
TA0040
Resource Development
TA0042
Reconnaissance
TA0043

Analysis: static1

Detonation Overview

Reported

2024-06-09 21:31

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 21:31

Reported

2024-06-09 21:42

Platform

win7-20240419-en

Max time kernel

161s

Max time network

161s

Command Line

"C:\Users\Admin\AppData\Local\Temp\XClient (1).exe"

Signatures

Detect Xworm Payload

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

Xworm

trojan rat xworm

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\XClient (1).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: 33 N/A C:\Windows\system32\AUDIODG.EXE N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\system32\AUDIODG.EXE N/A

Processes

C:\Users\Admin\AppData\Local\Temp\XClient (1).exe

"C:\Users\Admin\AppData\Local\Temp\XClient (1).exe"

C:\Windows\system32\LogonUI.exe

"LogonUI.exe" /flags:0x0

C:\Windows\system32\AUDIODG.EXE

C:\Windows\system32\AUDIODG.EXE 0x53c

C:\Windows\system32\LogonUI.exe

"LogonUI.exe" /flags:0x1

Network

Country Destination Domain Proto
US 8.8.8.8:53 20.ip.gl.ply.gg udp
US 147.185.221.20:17450 20.ip.gl.ply.gg tcp
US 147.185.221.20:17450 20.ip.gl.ply.gg tcp
US 147.185.221.20:17450 20.ip.gl.ply.gg tcp

Files

memory/2220-0-0x000007FEF4EB3000-0x000007FEF4EB4000-memory.dmp

memory/2220-1-0x0000000000F60000-0x0000000000F6E000-memory.dmp

memory/2220-2-0x000007FEF4EB0000-0x000007FEF589C000-memory.dmp

memory/2220-3-0x000007FEF4EB3000-0x000007FEF4EB4000-memory.dmp

memory/2220-4-0x000007FEF4EB0000-0x000007FEF589C000-memory.dmp

memory/2220-5-0x0000000000B40000-0x0000000000B4C000-memory.dmp

memory/2220-6-0x000007FEF4EB0000-0x000007FEF589C000-memory.dmp

memory/1900-7-0x0000000002D90000-0x0000000002D91000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-09 21:31

Reported

2024-06-09 21:42

Platform

win10-20240404-en

Max time kernel

121s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\XClient (1).exe"

Signatures

Detect Xworm Payload

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

Xworm

trojan rat xworm

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\DWM\ColorizationAfterglow = "3288365271" 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 (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\DWM\ColorizationColor = "3288365271" 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\CurrentVersion\Themes\History\AutoColor = "0" 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\DWM\ColorizationBlurBalance = "1" 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\CurrentVersion\Explorer\Accent\StartColorMenu = "4288567808" 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 (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglowBalance = "10" C:\Windows\system32\LogonUI.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\XClient (1).exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Windows\system32\LogonUI.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\XClient (1).exe

"C:\Users\Admin\AppData\Local\Temp\XClient (1).exe"

C:\Windows\system32\LogonUI.exe

"LogonUI.exe" /flags:0x0 /state0:0xa3ae4055 /state1:0x41c64e6d

Network

Country Destination Domain Proto
US 8.8.8.8:53 20.ip.gl.ply.gg udp
US 147.185.221.20:17450 20.ip.gl.ply.gg tcp
US 8.8.8.8:53 20.221.185.147.in-addr.arpa udp
US 147.185.221.20:17450 20.ip.gl.ply.gg tcp
US 8.8.8.8:53 22.236.111.52.in-addr.arpa udp
US 147.185.221.20:17450 20.ip.gl.ply.gg tcp
US 8.8.8.8:53 137.71.105.51.in-addr.arpa udp

Files

memory/5036-0-0x00007FFDC0CF3000-0x00007FFDC0CF4000-memory.dmp

memory/5036-1-0x00000000004A0000-0x00000000004AE000-memory.dmp

memory/5036-2-0x00007FFDC0CF0000-0x00007FFDC16DC000-memory.dmp

memory/5036-3-0x00007FFDC0CF0000-0x00007FFDC16DC000-memory.dmp

memory/5036-4-0x0000000002580000-0x000000000258C000-memory.dmp

memory/5036-5-0x00007FFDC0CF0000-0x00007FFDC16DC000-memory.dmp

Analysis: behavioral3

Detonation Overview

Submitted

2024-06-09 21:31

Reported

2024-06-09 21:43

Platform

win10v2004-20240508-en

Max time kernel

192s

Max time network

194s

Command Line

"C:\Users\Admin\AppData\Local\Temp\XClient (1).exe"

Signatures

Detect Xworm Payload

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

Xworm

trojan rat xworm

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 (1).exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier C:\Users\Admin\AppData\Local\Temp\XClient (1).exe N/A

Enumerates system info in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS C:\Users\Admin\AppData\Local\Temp\XClient (1).exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\BIOSVersion C:\Users\Admin\AppData\Local\Temp\XClient (1).exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\BIOSReleaseDate C:\Users\Admin\AppData\Local\Temp\XClient (1).exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemProductName C:\Users\Admin\AppData\Local\Temp\XClient (1).exe N/A

Modifies data under HKEY_USERS

Description Indicator Process Target
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent 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
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglow = "3288365271" 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
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\DWM\AccentColor = "4292311040" 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\ColorizationAfterglowBalance = "10" C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\EnableWindowColorization = "137" 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\Themes\History 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 (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\ColorizationColorBalance = "89" 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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\XClient (1).exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Windows\system32\LogonUI.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\XClient (1).exe

"C:\Users\Admin\AppData\Local\Temp\XClient (1).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 --field-trial-handle=4432,i,16710585221322798697,8586257254049248207,262144 --variations-seed-version --mojo-platform-channel-handle=4612 /prefetch:8

C:\Windows\system32\LogonUI.exe

"LogonUI.exe" /flags:0x4 /state0:0xa3952855 /state1:0x41c64e6d

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
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 69.31.126.40.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.ip.gl.ply.gg udp
US 147.185.221.20:17450 20.ip.gl.ply.gg tcp
US 8.8.8.8:53 20.221.185.147.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 31.243.111.52.in-addr.arpa udp
US 147.185.221.20:17450 20.ip.gl.ply.gg tcp
US 8.8.8.8:53 144.107.17.2.in-addr.arpa udp
US 147.185.221.20:17450 20.ip.gl.ply.gg tcp
US 147.185.221.20:17450 20.ip.gl.ply.gg tcp
US 8.8.8.8:53 203.197.79.204.in-addr.arpa udp

Files

memory/2080-0-0x00007FFDA3233000-0x00007FFDA3235000-memory.dmp

memory/2080-1-0x0000000000640000-0x000000000064E000-memory.dmp

memory/2080-2-0x00007FFDA3230000-0x00007FFDA3CF1000-memory.dmp

memory/2080-3-0x00007FFDA3230000-0x00007FFDA3CF1000-memory.dmp

memory/2080-4-0x0000000000F30000-0x0000000000F3C000-memory.dmp

memory/2080-5-0x0000000002830000-0x000000000283C000-memory.dmp

memory/2080-6-0x000000001D060000-0x000000001D588000-memory.dmp

memory/2080-7-0x00007FFDA3230000-0x00007FFDA3CF1000-memory.dmp

Analysis: behavioral4

Detonation Overview

Submitted

2024-06-09 21:31

Reported

2024-06-09 21:50

Platform

win11-20240508-en

Max time kernel

581s

Max time network

601s

Command Line

"C:\Users\Admin\AppData\Local\Temp\XClient (1).exe"

Signatures

Detect Xworm Payload

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

Xworm

trojan rat xworm

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\XClient (1).exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\XClient (1).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: SeDebugPrivilege N/A C:\Windows\system32\whoami.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 240 wrote to memory of 3012 N/A C:\Users\Admin\AppData\Local\Temp\XClient (1).exe C:\Windows\SYSTEM32\CMD.EXE
PID 240 wrote to memory of 3012 N/A C:\Users\Admin\AppData\Local\Temp\XClient (1).exe C:\Windows\SYSTEM32\CMD.EXE
PID 3012 wrote to memory of 2468 N/A C:\Windows\SYSTEM32\CMD.EXE C:\Windows\system32\whoami.exe
PID 3012 wrote to memory of 2468 N/A C:\Windows\SYSTEM32\CMD.EXE C:\Windows\system32\whoami.exe

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\XClient (1).exe

"C:\Users\Admin\AppData\Local\Temp\XClient (1).exe"

C:\Windows\system32\AUDIODG.EXE

C:\Windows\system32\AUDIODG.EXE 0x00000000000004CC 0x00000000000004D0

C:\Windows\SYSTEM32\CMD.EXE

"CMD.EXE"

C:\Windows\system32\whoami.exe

whoami

Network

Country Destination Domain Proto
US 8.8.8.8:53 20.ip.gl.ply.gg udp
US 147.185.221.20:17450 20.ip.gl.ply.gg tcp
US 8.8.8.8:53 20.221.185.147.in-addr.arpa udp
US 147.185.221.20:17450 20.ip.gl.ply.gg tcp
IE 52.111.236.21:443 tcp
US 147.185.221.20:17450 20.ip.gl.ply.gg tcp
US 147.185.221.20:17450 20.ip.gl.ply.gg tcp
US 147.185.221.20:17450 20.ip.gl.ply.gg tcp
US 147.185.221.20:17450 20.ip.gl.ply.gg tcp
US 147.185.221.20:17450 20.ip.gl.ply.gg tcp
US 147.185.221.20:17450 20.ip.gl.ply.gg tcp
US 147.185.221.20:17450 20.ip.gl.ply.gg tcp
US 147.185.221.20:17450 20.ip.gl.ply.gg tcp
US 147.185.221.20:17450 20.ip.gl.ply.gg tcp
US 147.185.221.20:17450 20.ip.gl.ply.gg tcp

Files

memory/240-0-0x00007FF949803000-0x00007FF949805000-memory.dmp

memory/240-1-0x0000000000FE0000-0x0000000000FEE000-memory.dmp

memory/240-2-0x00007FF949800000-0x00007FF94A2C2000-memory.dmp

memory/240-3-0x00007FF949800000-0x00007FF94A2C2000-memory.dmp

memory/240-4-0x0000000003110000-0x000000000311C000-memory.dmp

memory/240-5-0x000000001C0B0000-0x000000001C0EA000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\tmp576.tmp

MD5 1b942faa8e8b1008a8c3c1004ba57349
SHA1 cd99977f6c1819b12b33240b784ca816dfe2cb91
SHA256 555ccb7ecd9ae52a75135fdd81ab443a49d5785b0621ed6468d28c4234e46ccc
SHA512 5aee3d59478d41ddd5885c99b394c9c4983064e2b3528db1a3f7fc289662bced4f57d072517bbe7573c6d1789435e987ef1aa9cc91f372bcfd30bc016675fa43

memory/240-10-0x000000001D9A0000-0x000000001DA2E000-memory.dmp

memory/240-11-0x000000001CC50000-0x000000001CC86000-memory.dmp

memory/240-12-0x000000001C150000-0x000000001C15A000-memory.dmp

memory/240-13-0x00007FF949800000-0x00007FF94A2C2000-memory.dmp

memory/240-14-0x00007FF949800000-0x00007FF94A2C2000-memory.dmp

memory/240-15-0x000000001CCF0000-0x000000001CCFA000-memory.dmp

memory/240-16-0x000000001CD00000-0x000000001CD0A000-memory.dmp