xworm | 4ecf9e1e2dc279254aefa5a1e3befa0b7d46e9a255fc153aa36fc46329a881ee

Analysis

max time kernel
45s
max time network
44s
platform
windows10-ltsc 2021_x64
resource
win10ltsc2021-20241023-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20241023-enlocale:en-usos:windows10-ltsc 2021-x64system
submitted
17-11-2024 09:23

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General

Target

test.exe
Size

41KB
MD5

14ba5e24c48fdb89869f74ef6b39fb91
SHA1

ee472017864227ba1b16bd0becb71e213012b4af
SHA256

4ecf9e1e2dc279254aefa5a1e3befa0b7d46e9a255fc153aa36fc46329a881ee
SHA512

ead6a3c7156322b99c48f39ad808661c6c0758017c07ddb542c067f4b3746f90e5b8158b7e9bc68f85e534cc83b7da5c74496e546740cfa3d4ff0eecf6fa2dbc
SSDEEP

768:FV396FPL5Qskay6WJF5Pa9ORM6cOwhG33X7N:btojyfacFY9AM6cOwQH5

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

vshostupdater.duckdns.org:1177

http://vshostupdater.duckdns.org:1177

Mutex

wUXlZfe2ZEy8St4a

Attributes

Install_directory
%LocalAppData%
install_file
Steam_Service.exe

aes.plain

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/4948-1-0x0000000000D60000-0x0000000000D70000-memory.dmp	family_xworm
behavioral2/files/0x00280000000450ba-59.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
5052	powershell.exe
3244	powershell.exe
2996	powershell.exe
2180	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-1-5-21-641261377-2215826147-608237349-1000\Control Panel\International\Geo\Nation	test.exe

Executes dropped EXE 1 IoCs

pid	Process
3040	Steam_Service.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-1-5-21-641261377-2215826147-608237349-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Steam_Service = "C:\\Users\\Admin\\AppData\\Local\\Steam_Service.exe"	test.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

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
4288	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
5052	powershell.exe
5052	powershell.exe
3244	powershell.exe
3244	powershell.exe
2996	powershell.exe
2996	powershell.exe
2180	powershell.exe
2180	powershell.exe
4948	test.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4948	test.exe
Token: SeDebugPrivilege	5052	powershell.exe
Token: SeIncreaseQuotaPrivilege	5052	powershell.exe
Token: SeSecurityPrivilege	5052	powershell.exe
Token: SeTakeOwnershipPrivilege	5052	powershell.exe
Token: SeLoadDriverPrivilege	5052	powershell.exe
Token: SeSystemProfilePrivilege	5052	powershell.exe
Token: SeSystemtimePrivilege	5052	powershell.exe
Token: SeProfSingleProcessPrivilege	5052	powershell.exe
Token: SeIncBasePriorityPrivilege	5052	powershell.exe
Token: SeCreatePagefilePrivilege	5052	powershell.exe
Token: SeBackupPrivilege	5052	powershell.exe
Token: SeRestorePrivilege	5052	powershell.exe
Token: SeShutdownPrivilege	5052	powershell.exe
Token: SeDebugPrivilege	5052	powershell.exe
Token: SeSystemEnvironmentPrivilege	5052	powershell.exe
Token: SeRemoteShutdownPrivilege	5052	powershell.exe
Token: SeUndockPrivilege	5052	powershell.exe
Token: SeManageVolumePrivilege	5052	powershell.exe
Token: 33	5052	powershell.exe
Token: 34	5052	powershell.exe
Token: 35	5052	powershell.exe
Token: 36	5052	powershell.exe
Token: SeDebugPrivilege	3244	powershell.exe
Token: SeIncreaseQuotaPrivilege	3244	powershell.exe
Token: SeSecurityPrivilege	3244	powershell.exe
Token: SeTakeOwnershipPrivilege	3244	powershell.exe
Token: SeLoadDriverPrivilege	3244	powershell.exe
Token: SeSystemProfilePrivilege	3244	powershell.exe
Token: SeSystemtimePrivilege	3244	powershell.exe
Token: SeProfSingleProcessPrivilege	3244	powershell.exe
Token: SeIncBasePriorityPrivilege	3244	powershell.exe
Token: SeCreatePagefilePrivilege	3244	powershell.exe
Token: SeBackupPrivilege	3244	powershell.exe
Token: SeRestorePrivilege	3244	powershell.exe
Token: SeShutdownPrivilege	3244	powershell.exe
Token: SeDebugPrivilege	3244	powershell.exe
Token: SeSystemEnvironmentPrivilege	3244	powershell.exe
Token: SeRemoteShutdownPrivilege	3244	powershell.exe
Token: SeUndockPrivilege	3244	powershell.exe
Token: SeManageVolumePrivilege	3244	powershell.exe
Token: 33	3244	powershell.exe
Token: 34	3244	powershell.exe
Token: 35	3244	powershell.exe
Token: 36	3244	powershell.exe
Token: SeDebugPrivilege	2996	powershell.exe
Token: SeIncreaseQuotaPrivilege	2996	powershell.exe
Token: SeSecurityPrivilege	2996	powershell.exe
Token: SeTakeOwnershipPrivilege	2996	powershell.exe
Token: SeLoadDriverPrivilege	2996	powershell.exe
Token: SeSystemProfilePrivilege	2996	powershell.exe
Token: SeSystemtimePrivilege	2996	powershell.exe
Token: SeProfSingleProcessPrivilege	2996	powershell.exe
Token: SeIncBasePriorityPrivilege	2996	powershell.exe
Token: SeCreatePagefilePrivilege	2996	powershell.exe
Token: SeBackupPrivilege	2996	powershell.exe
Token: SeRestorePrivilege	2996	powershell.exe
Token: SeShutdownPrivilege	2996	powershell.exe
Token: SeDebugPrivilege	2996	powershell.exe
Token: SeSystemEnvironmentPrivilege	2996	powershell.exe
Token: SeRemoteShutdownPrivilege	2996	powershell.exe
Token: SeUndockPrivilege	2996	powershell.exe
Token: SeManageVolumePrivilege	2996	powershell.exe
Token: 33	2996	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4948	test.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4948 wrote to memory of 5052	4948	test.exe	86
PID 4948 wrote to memory of 5052	4948	test.exe	86
PID 4948 wrote to memory of 3244	4948	test.exe	90
PID 4948 wrote to memory of 3244	4948	test.exe	90
PID 4948 wrote to memory of 2996	4948	test.exe	92
PID 4948 wrote to memory of 2996	4948	test.exe	92
PID 4948 wrote to memory of 2180	4948	test.exe	94
PID 4948 wrote to memory of 2180	4948	test.exe	94
PID 4948 wrote to memory of 4288	4948	test.exe	98
PID 4948 wrote to memory of 4288	4948	test.exe	98

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\test.exe
"C:\Users\Admin\AppData\Local\Temp\test.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4948
- 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\test.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:5052
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'test.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3244
- 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\Steam_Service.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2996
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Steam_Service.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  PID:2180
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Steam_Service" /tr "C:\Users\Admin\AppData\Local\Steam_Service.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:4288

C:\Users\Admin\AppData\Local\Steam_Service.exe
"C:\Users\Admin\AppData\Local\Steam_Service.exe"
1⤵
- Executes dropped EXE
PID:3040

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
60b3262c3163ee3d466199160b9ed07d

SHA1
994ece4ea4e61de0be2fdd580f87e3415f9e1ff6

SHA256
e3b30f16d41f94cba2b8a75f35c91ae7418465abfbfe5477ec0551d1952b2fdb

SHA512
081d2015cb94477eb0fbc38f44b6d9b4a3204fb3ad0b7d0e146a88ab4ab9a0d475207f1adae03f4a81ccc5beb7568dc8be1249f69e32fe56efd9ee2f6ee3b1af

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

Filesize
1KB

MD5
f49a22a792fb6bbd351b96319c23b391

SHA1
73cd72bb7ffc7bc1648853121c8c23a38f428a26

SHA256
6f55c53a08c6ca4a643f1729bed2b52fa26c783fa1b34e65af6234b9252b1f9a

SHA512
3947ee2dc4daf81f2917aa456d412df8e3557dfd62d1b4a42270b9dc276679e0b679f69c229cdaf9d6a83295b280fb4992d64508255b976f2ca2fdc5043f7669

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

Filesize
1KB

MD5
3bafa58203717b6abddde7bcd5117c5d

SHA1
793f79252c4f2157aa0dabc617afe1474781f208

SHA256
5dff92dc5eb424a202215bc6979c184b9af54547b17c4e312187cc112818b3dc

SHA512
c61a1d616036e27a450b2b5dcd18d9879c0bf84aaa7a4028a3da8cef460d06fcfd626e9b27ff5633fb9a72b0e395b71102f2dc6ec30b6f8f133af038213136e7

Download Submit
C:\Users\Admin\AppData\Local\Steam_Service.exe

Filesize
41KB

MD5
14ba5e24c48fdb89869f74ef6b39fb91

SHA1
ee472017864227ba1b16bd0becb71e213012b4af

SHA256
4ecf9e1e2dc279254aefa5a1e3befa0b7d46e9a255fc153aa36fc46329a881ee

SHA512
ead6a3c7156322b99c48f39ad808661c6c0758017c07ddb542c067f4b3746f90e5b8158b7e9bc68f85e534cc83b7da5c74496e546740cfa3d4ff0eecf6fa2dbc

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_h1hpkfdf.spw.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/3244-33-0x000002BAF6500000-0x000002BAF671D000-memory.dmp

Filesize
2.1MB

Download
memory/4948-1-0x0000000000D60000-0x0000000000D70000-memory.dmp

Filesize
64KB

Download
memory/4948-2-0x00007FFF8C4A0000-0x00007FFF8CF62000-memory.dmp

Filesize
10.8MB

Download
memory/4948-0-0x00007FFF8C4A3000-0x00007FFF8C4A5000-memory.dmp

Filesize
8KB

Download
memory/4948-58-0x00007FFF8C4A0000-0x00007FFF8CF62000-memory.dmp

Filesize
10.8MB

Download
memory/4948-43-0x00007FFF8C4A3000-0x00007FFF8C4A5000-memory.dmp

Filesize
8KB

Download
memory/5052-13-0x000001844A580000-0x000001844A5A2000-memory.dmp

Filesize
136KB

Download
memory/5052-20-0x00007FFF8C4A0000-0x00007FFF8CF62000-memory.dmp

Filesize
10.8MB

Download
memory/5052-17-0x00007FFF8C4A0000-0x00007FFF8CF62000-memory.dmp

Filesize
10.8MB

Download
memory/5052-16-0x00007FFF8C4A0000-0x00007FFF8CF62000-memory.dmp

Filesize
10.8MB

Download
memory/5052-15-0x00007FFF8C4A0000-0x00007FFF8CF62000-memory.dmp

Filesize
10.8MB

Download
memory/5052-14-0x00007FFF8C4A0000-0x00007FFF8CF62000-memory.dmp

Filesize
10.8MB

Download
memory/5052-3-0x00007FFF8C4A0000-0x00007FFF8CF62000-memory.dmp

Filesize
10.8MB

Download