xworm | e8ee7432937dbff16623599fe2471eccee5cdf4e177d3a0b9f37d53f31518b41

Analysis

max time kernel
149s
max time network
153s
platform
windows10-ltsc 2021_x64
resource
win10ltsc2021-20250113-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20250113-enlocale:en-usos:windows10-ltsc 2021-x64system
submitted
17-01-2025 16:25

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General

Target

XClient.exe
Size

71KB
MD5

32a45a0dd0e658d3b622241f23859953
SHA1

7f9cdf462898242eefaeb928f0645ec9b2e06b49
SHA256

e8ee7432937dbff16623599fe2471eccee5cdf4e177d3a0b9f37d53f31518b41
SHA512

1e3c2e662ae94575afb5266db22db28b807ac2a35b56b618493b6954da50f0172c681dee6a74456f1b1919300abf120c9b57aa357d039588773b5104334aa1c1
SSDEEP

1536:HFtKSpscbcaglT/vhPlDrvb7tAylrqav6RAeTOpynkUoha:lXiiglTxBvb7+yh4XOekha

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

kitchen-alaska.gl.at.ply.gg:4964

Attributes

Install_directory
%AppData%
install_file
SubDir.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/1380-1-0x00000000006C0000-0x00000000006D8000-memory.dmp	family_xworm
behavioral2/files/0x002d0000000461a7-61.dat	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
1992	powershell.exe
4640	powershell.exe
2644	powershell.exe
4768	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-1-5-21-2449540194-3226363261-2578591490-1000\Control Panel\International\Geo\Nation	XClient.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
2368	SubDir.exe
1896	SubDir.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-1-5-21-2449540194-3226363261-2578591490-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SubDir = "C:\\Users\\Admin\\AppData\\Roaming\\SubDir.exe"	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
4	ip-api.com

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

System Information Discovery
T1082

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
4876	schtasks.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
4768	powershell.exe
4768	powershell.exe
1992	powershell.exe
1992	powershell.exe
4640	powershell.exe
4640	powershell.exe
2644	powershell.exe
2644	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1380	XClient.exe
Token: SeDebugPrivilege	4768	powershell.exe
Token: SeIncreaseQuotaPrivilege	4768	powershell.exe
Token: SeSecurityPrivilege	4768	powershell.exe
Token: SeTakeOwnershipPrivilege	4768	powershell.exe
Token: SeLoadDriverPrivilege	4768	powershell.exe
Token: SeSystemProfilePrivilege	4768	powershell.exe
Token: SeSystemtimePrivilege	4768	powershell.exe
Token: SeProfSingleProcessPrivilege	4768	powershell.exe
Token: SeIncBasePriorityPrivilege	4768	powershell.exe
Token: SeCreatePagefilePrivilege	4768	powershell.exe
Token: SeBackupPrivilege	4768	powershell.exe
Token: SeRestorePrivilege	4768	powershell.exe
Token: SeShutdownPrivilege	4768	powershell.exe
Token: SeDebugPrivilege	4768	powershell.exe
Token: SeSystemEnvironmentPrivilege	4768	powershell.exe
Token: SeRemoteShutdownPrivilege	4768	powershell.exe
Token: SeUndockPrivilege	4768	powershell.exe
Token: SeManageVolumePrivilege	4768	powershell.exe
Token: 33	4768	powershell.exe
Token: 34	4768	powershell.exe
Token: 35	4768	powershell.exe
Token: 36	4768	powershell.exe
Token: SeDebugPrivilege	1992	powershell.exe
Token: SeIncreaseQuotaPrivilege	1992	powershell.exe
Token: SeSecurityPrivilege	1992	powershell.exe
Token: SeTakeOwnershipPrivilege	1992	powershell.exe
Token: SeLoadDriverPrivilege	1992	powershell.exe
Token: SeSystemProfilePrivilege	1992	powershell.exe
Token: SeSystemtimePrivilege	1992	powershell.exe
Token: SeProfSingleProcessPrivilege	1992	powershell.exe
Token: SeIncBasePriorityPrivilege	1992	powershell.exe
Token: SeCreatePagefilePrivilege	1992	powershell.exe
Token: SeBackupPrivilege	1992	powershell.exe
Token: SeRestorePrivilege	1992	powershell.exe
Token: SeShutdownPrivilege	1992	powershell.exe
Token: SeDebugPrivilege	1992	powershell.exe
Token: SeSystemEnvironmentPrivilege	1992	powershell.exe
Token: SeRemoteShutdownPrivilege	1992	powershell.exe
Token: SeUndockPrivilege	1992	powershell.exe
Token: SeManageVolumePrivilege	1992	powershell.exe
Token: 33	1992	powershell.exe
Token: 34	1992	powershell.exe
Token: 35	1992	powershell.exe
Token: 36	1992	powershell.exe
Token: SeDebugPrivilege	4640	powershell.exe
Token: SeIncreaseQuotaPrivilege	4640	powershell.exe
Token: SeSecurityPrivilege	4640	powershell.exe
Token: SeTakeOwnershipPrivilege	4640	powershell.exe
Token: SeLoadDriverPrivilege	4640	powershell.exe
Token: SeSystemProfilePrivilege	4640	powershell.exe
Token: SeSystemtimePrivilege	4640	powershell.exe
Token: SeProfSingleProcessPrivilege	4640	powershell.exe
Token: SeIncBasePriorityPrivilege	4640	powershell.exe
Token: SeCreatePagefilePrivilege	4640	powershell.exe
Token: SeBackupPrivilege	4640	powershell.exe
Token: SeRestorePrivilege	4640	powershell.exe
Token: SeShutdownPrivilege	4640	powershell.exe
Token: SeDebugPrivilege	4640	powershell.exe
Token: SeSystemEnvironmentPrivilege	4640	powershell.exe
Token: SeRemoteShutdownPrivilege	4640	powershell.exe
Token: SeUndockPrivilege	4640	powershell.exe
Token: SeManageVolumePrivilege	4640	powershell.exe
Token: 33	4640	powershell.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 1380 wrote to memory of 4768	1380	XClient.exe	84
PID 1380 wrote to memory of 4768	1380	XClient.exe	84
PID 1380 wrote to memory of 1992	1380	XClient.exe	87
PID 1380 wrote to memory of 1992	1380	XClient.exe	87
PID 1380 wrote to memory of 4640	1380	XClient.exe	89
PID 1380 wrote to memory of 4640	1380	XClient.exe	89
PID 1380 wrote to memory of 2644	1380	XClient.exe	91
PID 1380 wrote to memory of 2644	1380	XClient.exe	91
PID 1380 wrote to memory of 4876	1380	XClient.exe	93
PID 1380 wrote to memory of 4876	1380	XClient.exe	93

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 use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1380
- 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:4768
- 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:1992
- 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\Roaming\SubDir.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4640
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'SubDir.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  PID:2644
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "SubDir" /tr "C:\Users\Admin\AppData\Roaming\SubDir.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:4876

C:\Users\Admin\AppData\Roaming\SubDir.exe
"C:\Users\Admin\AppData\Roaming\SubDir.exe"
1⤵
- Executes dropped EXE
PID:2368

C:\Users\Admin\AppData\Roaming\SubDir.exe
"C:\Users\Admin\AppData\Roaming\SubDir.exe"
1⤵
- Executes dropped EXE
PID:1896

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\SubDir.exe.log

Filesize
654B

MD5
11c6e74f0561678d2cf7fc075a6cc00c

SHA1
535ee79ba978554abcb98c566235805e7ea18490

SHA256
d39a78fabca39532fcb85ce908781a75132e1bd01cc50a3b290dd87127837d63

SHA512
32c63d67bf512b42e7f57f71287b354200126cb417ef9d869c72e0b9388a7c2f5e3b61f303f1353baa1bf482d0f17e06e23c9f50b2f1babd4d958b6da19c40b0

Download Submit
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
60b3262c3163ee3d466199160b9ed07d

SHA1
994ece4ea4e61de0be2fdd580f87e3415f9e1ff6

SHA256
e3b30f16d41f94cba2b8a75f35c91ae7418465abfbfe5477ec0551d1952b2fdb

SHA512
081d2015cb94477eb0fbc38f44b6d9b4a3204fb3ad0b7d0e146a88ab4ab9a0d475207f1adae03f4a81ccc5beb7568dc8be1249f69e32fe56efd9ee2f6ee3b1af

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

Filesize
1KB

MD5
ee837f9246bf7d67b3132d8c32031517

SHA1
044171961c32e56e9e41da106ca654d1d7a5198f

SHA256
bf2368988696a019042e21b490d30f66297c8517a9fd3ca798fac7183d2b2d28

SHA512
cd8636c9fcdf8eb25cde91309edf5a01cba0b155d81f4a176c0bb7e0b829cc0b7adea724d6d27778beaf1247bafdddc9c47d05388c23da26a21e8c436d47d4a5

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

Filesize
1KB

MD5
0a2581ce25d27c89853a8c5e60aeac6f

SHA1
d3f5bfaa9b6c89915dbc46be9aa6e49a7eeb2ce7

SHA256
5609b0664d3e47ce6611cbca5b25caa6b2321fdbddbfd7efe5a38da6dacb27fc

SHA512
198a3644eb4ee261f558b9e248eb6f1fe59704aa31524983e866e39bb3c534cf776bc276ce786c0b855da23ea827e816453755bc01e3d8ae3e3cf965914e70c8

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_v0v10q0n.tht.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\SubDir.exe

Filesize
71KB

MD5
32a45a0dd0e658d3b622241f23859953

SHA1
7f9cdf462898242eefaeb928f0645ec9b2e06b49

SHA256
e8ee7432937dbff16623599fe2471eccee5cdf4e177d3a0b9f37d53f31518b41

SHA512
1e3c2e662ae94575afb5266db22db28b807ac2a35b56b618493b6954da50f0172c681dee6a74456f1b1919300abf120c9b57aa357d039588773b5104334aa1c1

Download Submit
memory/1380-0-0x00007FFE4E223000-0x00007FFE4E225000-memory.dmp

Filesize
8KB

Download
memory/1380-56-0x00007FFE4E220000-0x00007FFE4ECE2000-memory.dmp

Filesize
10.8MB

Download
memory/1380-32-0x00007FFE4E223000-0x00007FFE4E225000-memory.dmp

Filesize
8KB

Download
memory/1380-69-0x00007FFE4E220000-0x00007FFE4ECE2000-memory.dmp

Filesize
10.8MB

Download
memory/1380-2-0x00007FFE4E220000-0x00007FFE4ECE2000-memory.dmp

Filesize
10.8MB

Download
memory/1380-1-0x00000000006C0000-0x00000000006D8000-memory.dmp

Filesize
96KB

Download
memory/4768-5-0x000001E0FED10000-0x000001E0FED32000-memory.dmp

Filesize
136KB

Download
memory/4768-20-0x00007FFE4E220000-0x00007FFE4ECE2000-memory.dmp

Filesize
10.8MB

Download
memory/4768-17-0x00007FFE4E220000-0x00007FFE4ECE2000-memory.dmp

Filesize
10.8MB

Download
memory/4768-16-0x00007FFE4E220000-0x00007FFE4ECE2000-memory.dmp

Filesize
10.8MB

Download
memory/4768-15-0x00007FFE4E220000-0x00007FFE4ECE2000-memory.dmp

Filesize
10.8MB

Download
memory/4768-14-0x00007FFE4E220000-0x00007FFE4ECE2000-memory.dmp

Filesize
10.8MB

Download
memory/4768-6-0x00007FFE4E220000-0x00007FFE4ECE2000-memory.dmp

Filesize
10.8MB

Download