xworm | 0272bd065f97c4038dd4369a7e28e3b5eaf679be188f1e0b866d6c1de4542e73

Analysis

max time kernel
98s
max time network
147s
platform
windows10-ltsc 2021_x64
resource
win10ltsc2021-20241023-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20241023-enlocale:en-usos:windows10-ltsc 2021-x64system
submitted
18-11-2024 02:35

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General

Target

XClient.exe
Size

90KB
MD5

ceec407314c69b3ef0d1bebd75983973
SHA1

28ddf8f4711cad7e4e25a4ec83113fa4ea33589e
SHA256

0272bd065f97c4038dd4369a7e28e3b5eaf679be188f1e0b866d6c1de4542e73
SHA512

1cd72630d9b4d46fd0d16be9c42f40e3bec3c0cdfd339c1f7e13caa5c040469137ca355b1a1aa5b26a95520d831581f5dd9fcec42ed9a4bf1ca3c09ea2ab4f4a
SSDEEP

1536:7x4+aR/KoqTG7HRo5iLGbv4nJP0LyVs7IL563dIxtgKQOk5LMfKwdL7:7wd3o8pKbv4nJ0yVsuOf7Ok5YfKO7

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

job-moore.gl.at.ply.gg:49404

Attributes

Install_directory
%ProgramData%
install_file
Helper.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/4484-1-0x00000000003B0000-0x00000000003CC000-memory.dmp	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm
Xworm family
xworm

Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
3840	powershell.exe
3396	powershell.exe
3892	powershell.exe
472	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-87863914-780023816-688321450-1000\Control Panel\International\Geo\Nation	XClient.exe

Drops startup file 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\WindowsDefender.lnk	XClient.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\WindowsDefender.lnk	XClient.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-87863914-780023816-688321450-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\WindowsDefender = "C:\\ProgramData\\WindowsDefender"	XClient.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
15	ip-api.com

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
4744	timeout.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
4124	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
3892	powershell.exe
3892	powershell.exe
472	powershell.exe
472	powershell.exe
3840	powershell.exe
3840	powershell.exe
3396	powershell.exe
3396	powershell.exe
4484	XClient.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4484	XClient.exe
Token: SeDebugPrivilege	3892	powershell.exe
Token: SeIncreaseQuotaPrivilege	3892	powershell.exe
Token: SeSecurityPrivilege	3892	powershell.exe
Token: SeTakeOwnershipPrivilege	3892	powershell.exe
Token: SeLoadDriverPrivilege	3892	powershell.exe
Token: SeSystemProfilePrivilege	3892	powershell.exe
Token: SeSystemtimePrivilege	3892	powershell.exe
Token: SeProfSingleProcessPrivilege	3892	powershell.exe
Token: SeIncBasePriorityPrivilege	3892	powershell.exe
Token: SeCreatePagefilePrivilege	3892	powershell.exe
Token: SeBackupPrivilege	3892	powershell.exe
Token: SeRestorePrivilege	3892	powershell.exe
Token: SeShutdownPrivilege	3892	powershell.exe
Token: SeDebugPrivilege	3892	powershell.exe
Token: SeSystemEnvironmentPrivilege	3892	powershell.exe
Token: SeRemoteShutdownPrivilege	3892	powershell.exe
Token: SeUndockPrivilege	3892	powershell.exe
Token: SeManageVolumePrivilege	3892	powershell.exe
Token: 33	3892	powershell.exe
Token: 34	3892	powershell.exe
Token: 35	3892	powershell.exe
Token: 36	3892	powershell.exe
Token: SeDebugPrivilege	472	powershell.exe
Token: SeIncreaseQuotaPrivilege	472	powershell.exe
Token: SeSecurityPrivilege	472	powershell.exe
Token: SeTakeOwnershipPrivilege	472	powershell.exe
Token: SeLoadDriverPrivilege	472	powershell.exe
Token: SeSystemProfilePrivilege	472	powershell.exe
Token: SeSystemtimePrivilege	472	powershell.exe
Token: SeProfSingleProcessPrivilege	472	powershell.exe
Token: SeIncBasePriorityPrivilege	472	powershell.exe
Token: SeCreatePagefilePrivilege	472	powershell.exe
Token: SeBackupPrivilege	472	powershell.exe
Token: SeRestorePrivilege	472	powershell.exe
Token: SeShutdownPrivilege	472	powershell.exe
Token: SeDebugPrivilege	472	powershell.exe
Token: SeSystemEnvironmentPrivilege	472	powershell.exe
Token: SeRemoteShutdownPrivilege	472	powershell.exe
Token: SeUndockPrivilege	472	powershell.exe
Token: SeManageVolumePrivilege	472	powershell.exe
Token: 33	472	powershell.exe
Token: 34	472	powershell.exe
Token: 35	472	powershell.exe
Token: 36	472	powershell.exe
Token: SeDebugPrivilege	3840	powershell.exe
Token: SeIncreaseQuotaPrivilege	3840	powershell.exe
Token: SeSecurityPrivilege	3840	powershell.exe
Token: SeTakeOwnershipPrivilege	3840	powershell.exe
Token: SeLoadDriverPrivilege	3840	powershell.exe
Token: SeSystemProfilePrivilege	3840	powershell.exe
Token: SeSystemtimePrivilege	3840	powershell.exe
Token: SeProfSingleProcessPrivilege	3840	powershell.exe
Token: SeIncBasePriorityPrivilege	3840	powershell.exe
Token: SeCreatePagefilePrivilege	3840	powershell.exe
Token: SeBackupPrivilege	3840	powershell.exe
Token: SeRestorePrivilege	3840	powershell.exe
Token: SeShutdownPrivilege	3840	powershell.exe
Token: SeDebugPrivilege	3840	powershell.exe
Token: SeSystemEnvironmentPrivilege	3840	powershell.exe
Token: SeRemoteShutdownPrivilege	3840	powershell.exe
Token: SeUndockPrivilege	3840	powershell.exe
Token: SeManageVolumePrivilege	3840	powershell.exe
Token: 33	3840	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4484	XClient.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 4484 wrote to memory of 3892	4484	XClient.exe	85
PID 4484 wrote to memory of 3892	4484	XClient.exe	85
PID 4484 wrote to memory of 472	4484	XClient.exe	89
PID 4484 wrote to memory of 472	4484	XClient.exe	89
PID 4484 wrote to memory of 3840	4484	XClient.exe	91
PID 4484 wrote to memory of 3840	4484	XClient.exe	91
PID 4484 wrote to memory of 3396	4484	XClient.exe	94
PID 4484 wrote to memory of 3396	4484	XClient.exe	94
PID 4484 wrote to memory of 4124	4484	XClient.exe	96
PID 4484 wrote to memory of 4124	4484	XClient.exe	96
PID 4484 wrote to memory of 4088	4484	XClient.exe	102
PID 4484 wrote to memory of 4088	4484	XClient.exe	102
PID 4484 wrote to memory of 1556	4484	XClient.exe	104
PID 4484 wrote to memory of 1556	4484	XClient.exe	104
PID 1556 wrote to memory of 4744	1556	cmd.exe	106
PID 1556 wrote to memory of 4744	1556	cmd.exe	106

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\XClient.exe
"C:\Users\Admin\AppData\Local\Temp\XClient.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4484
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3892
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:472
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\WindowsDefender'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3840
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'WindowsDefender'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  PID:3396
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "WindowsDefender" /tr "C:\ProgramData\WindowsDefender"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:4124
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /delete /f /tn "WindowsDefender"
  2⤵
  PID:4088
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpE493.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1556
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:4744

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
3KB

MD5
3eb3833f769dd890afc295b977eab4b4

SHA1
e857649b037939602c72ad003e5d3698695f436f

SHA256
c485a6e2fd17c342fca60060f47d6a5655a65a412e35e001bb5bf88d96e6e485

SHA512
c24bbc8f278478d43756807b8c584d4e3fb2289db468bc92986a489f74a8da386a667a758360a397e77e018e363be8912ac260072fa3e31117ad0599ac749e72

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
1KB

MD5
60ba7ac90c0e466144b48a90919960b6

SHA1
fe7f5d9e1d317f9409d8daa35d9c890f7e222d6a

SHA256
43d3c3113c66141b3a1f1f1bbf2d32a80128d029903ca58db09e9c6a9410ef9e

SHA512
92a1d912fd7be06820ec97b192b965d04ff44ff6a1c76b55405ecf20ca995762d823f52f174d8f48feb1d454716ab244adb4945febbf4fe4a6f91dd9791f87f2

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
1KB

MD5
f5fe1f380bdc484984cd426060c905f8

SHA1
6dfdb6e198fb6a7454cb0572b1f97a1f844d9fac

SHA256
24110031277b6f9f0b57c9ea398f88bfbc5c941553458d0c5316ec7f02ac13fa

SHA512
3e57f02000930ffdd088991feabd83e18fedec8de2f9ba0dbf0f6337bfd33f82cb966507e32dc25d76a4fd674d2d5190f75b7742680f2044abfcb367ac337531

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
1KB

MD5
71ef017ab7d7d22bdcfd1a4643de5907

SHA1
ef2a6c064d25256bb45402ad0a04b2410a8181eb

SHA256
b49b6d997bf4147d111d9a90158dcbd93d04a4a29fb2893f117b4340560fa9e9

SHA512
503bbf11689d05df7ed6f3a75ef599cc1df2a2d4d6c835227ba67e9a6adbc0081f626359622e13054753edb04be46576998fd56408152ce63bc2b88cc14b54af

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_r3dghijd.2i4.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpE493.tmp.bat

Filesize
159B

MD5
b9f4411921a5f9a7746e94c1640965e3

SHA1
ad93a8e837610eb82abcc559d2dcd1b49eedbda0

SHA256
9d269d2df46a49544ba8e11b9bce161b92b9aa94ae1a4869a60ca9aa8a625b67

SHA512
973d7e6410286f6a55453cf4fb84dddf9d245690cb9bd8933c04ccae72b1d1e75a1b2701aa47dbabbff4ba12b69608adfdd397f7d8447e203194528b979f06c2

Download Submit
memory/3892-21-0x00007FFBBCDE0000-0x00007FFBBD8A2000-memory.dmp

Filesize
10.8MB

Download
memory/3892-9-0x000001B2ABC50000-0x000001B2ABC72000-memory.dmp

Filesize
136KB

Download
memory/3892-16-0x00007FFBBCDE0000-0x00007FFBBD8A2000-memory.dmp

Filesize
10.8MB

Download
memory/3892-14-0x00007FFBBCDE0000-0x00007FFBBD8A2000-memory.dmp

Filesize
10.8MB

Download
memory/3892-18-0x00007FFBBCDE0000-0x00007FFBBD8A2000-memory.dmp

Filesize
10.8MB

Download
memory/3892-15-0x00007FFBBCDE0000-0x00007FFBBD8A2000-memory.dmp

Filesize
10.8MB

Download
memory/3892-13-0x00007FFBBCDE0000-0x00007FFBBD8A2000-memory.dmp

Filesize
10.8MB

Download
memory/4484-0-0x00007FFBBCDE3000-0x00007FFBBCDE5000-memory.dmp

Filesize
8KB

Download
memory/4484-33-0x00007FFBBCDE0000-0x00007FFBBD8A2000-memory.dmp

Filesize
10.8MB

Download
memory/4484-2-0x00007FFBBCDE0000-0x00007FFBBD8A2000-memory.dmp

Filesize
10.8MB

Download
memory/4484-1-0x00000000003B0000-0x00000000003CC000-memory.dmp

Filesize
112KB

Download
memory/4484-60-0x000000001B260000-0x000000001B26C000-memory.dmp

Filesize
48KB

Download
memory/4484-67-0x00007FFBBCDE0000-0x00007FFBBD8A2000-memory.dmp

Filesize
10.8MB

Download
memory/4484-17-0x00007FFBBCDE3000-0x00007FFBBCDE5000-memory.dmp

Filesize
8KB

Download