xworm | 196f53a2d6b267d8ea1e590e1a45d89797df3228fe9de435593df3daa94e8cf2

Analysis

max time kernel
149s
max time network
152s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260629-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260629-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
06/07/2026, 12:27

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General

Target
OC463971.vbs
Size 1.1MB
Sample260706-pm2bvsa14k
SHA256 196f53a2d6b267d8ea1e590e1a45d89797df3228fe9de435593df3daa94e8cf2
MD5 42f7945ec75544a0474ad1ec9ca57f36
SHA1 146633200b53d65d7d45fdba7d341160d7f8f18e
SHA512 4a723f783e82a9040f8906cbf25ec91a004bf2951a6e5a8588521fc1df15198223a7d22e40a5abfd258098ac62f3f4a7a245ed54d340bb57be07fbc4dcc34c8e
SSDEEP 384:e++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++z:hu
TLSH
T10D3541C804BF19D9B0C8A0C87AFE79C6B85F4D05412FBE82E5467A94C2DAE6CF4511BD
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

discovery execution xworm persistence rat trojan

Malware Config

Signatures

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

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/2024-22-0x0000000000400000-0x000000000041C000-memory.dmp	family_xworm

Process spawned unexpected child process 1 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

description	pid	pid_target	Process	procid_target
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	5208	752	powershell.exe	88

Badlisted process makes network request 2 IoCs

Network request originating from process or tool commonly abused by malware.

flow	pid	Process
2	5208	powershell.exe
3	5208	powershell.exe

Drops startup file 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Winrar32.lnk	Caspol.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Winrar32.lnk	Caspol.exe

Executes dropped EXE 2 IoCs

pid	Process
5352	Winrar32.exe
2508	Winrar32.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-1-5-21-2639994890-966400312-4246138405-1000\Software\Microsoft\Windows\CurrentVersion\Run\Winrar32 = "C:\\Users\\Admin\\AppData\\Roaming\\\\WindowsUpdate\\Winrar\\Winrar32.exe"	Caspol.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5208 set thread context of 2024	5208	powershell.exe	94

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
5208	powershell.exe

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Caspol.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Winrar32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Winrar32.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
5208	powershell.exe
5208	powershell.exe
5208	powershell.exe
5208	powershell.exe
5208	powershell.exe
5208	powershell.exe
5208	powershell.exe
5208	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	5208	powershell.exe
Token: SeDebugPrivilege	2024	Caspol.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1408	conhost.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1408 wrote to memory of 1012	1408	conhost.exe	93
PID 5208 wrote to memory of 2024	5208	powershell.exe	94
PID 5208 wrote to memory of 2024	5208	powershell.exe	94
PID 5208 wrote to memory of 2024	5208	powershell.exe	94
PID 5208 wrote to memory of 2024	5208	powershell.exe	94
PID 5208 wrote to memory of 2024	5208	powershell.exe	94

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\OC463971.vbs"
1⤵
PID:5488

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -NoProfile -Command "Invoke-Expression $env:saltbox"
1⤵
- Process spawned unexpected child process
- Badlisted process makes network request
- Suspicious use of SetThreadContext
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5208
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\Caspol.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\Caspol.exe"
  2⤵
  - Drops startup file
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:2024

C:\Windows\System32\conhost.exe
conhost.exe
1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1408
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe
  2⤵
  PID:1012

C:\Users\Admin\AppData\Roaming\WindowsUpdate\Winrar\Winrar32.exe
C:\Users\Admin\AppData\Roaming\\WindowsUpdate\Winrar\Winrar32.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:5352

C:\Users\Admin\AppData\Roaming\WindowsUpdate\Winrar\Winrar32.exe
C:\Users\Admin\AppData\Roaming\WindowsUpdate\Winrar\Winrar32.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:2508

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

Winrar32.exe

Path C:\Users\Admin\AppData\Roaming\WindowsUpdate\Winrar\Winrar32.exe
Size 99KB
SHA256 57e9675902b443085e37ead57dfed97de6bb61321682bc93aff30f16b5ca5aeb
MD5 f61fa5ce25f885a9b1f549055c9911ed
SHA1 aba1c035b06017b0b0bd1c712669646e4f3765ab
SHA512 02e3db343037294fd3b774f954c9a617a50715e6b89d7c409f3c7dc5a1cf5ed9418158c442e9e80111994da139a9a16db33ac68a833d6d115c4a41bdf75751ac
SSDEEP 1536:VSF7vAYeRqH3ex0Jj/3MZpEktOgl6mdcQ6A4vrZZ1RpvlWN4wpzh:qAYeXGJy96mdclA4vrNRpvlsld
TLSH
T140A3B465B3FD1224F2FF8B70ADF89452453BBD9BA951C26D2C89028906327C1D922F77
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/2024-22-0x0000000000400000-0x000000000041C000-memory.dmp

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memory/2024-35-0x0000000007690000-0x0000000007722000-memory.dmp

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memory/2024-27-0x0000000005950000-0x0000000005F0A000-memory.dmp

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memory/2024-26-0x0000000002E20000-0x0000000002E86000-memory.dmp

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memory/2024-25-0x00000000052F0000-0x000000000538C000-memory.dmp

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memory/5208-16-0x00007FFA69850000-0x00007FFA6A1F4000-memory.dmp

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memory/5208-19-0x0000016918860000-0x0000016918914000-memory.dmp

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memory/5208-10-0x00007FFA69850000-0x00007FFA6A1F4000-memory.dmp

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memory/5208-11-0x00007FFA69850000-0x00007FFA6A1F4000-memory.dmp

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memory/5208-12-0x00007FFA69850000-0x00007FFA6A1F4000-memory.dmp

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memory/5208-13-0x00007FFA69850000-0x00007FFA6A1F4000-memory.dmp

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memory/5208-14-0x00007FFA69850000-0x00007FFA6A1F4000-memory.dmp

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memory/5208-15-0x00007FFA69850000-0x00007FFA6A1F4000-memory.dmp

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memory/5208-0-0x00007FFA699DF000-0x00007FFA699E0000-memory.dmp

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memory/5208-17-0x00007FFA69850000-0x00007FFA6A1F4000-memory.dmp

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memory/5208-18-0x00007FFA69850000-0x00007FFA6A1F4000-memory.dmp

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memory/5208-9-0x00007FFA69850000-0x00007FFA6A1F4000-memory.dmp

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memory/5208-20-0x0000016918D70000-0x0000016918D7A000-memory.dmp

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memory/5208-21-0x00007FFA69850000-0x00007FFA6A1F4000-memory.dmp

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memory/5208-8-0x00007FFA69850000-0x00007FFA6A1F4000-memory.dmp

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memory/5208-24-0x00007FFA69850000-0x00007FFA6A1F4000-memory.dmp

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memory/5208-7-0x00007FFA69850000-0x00007FFA6A1F4000-memory.dmp

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memory/5208-6-0x00007FFA69850000-0x00007FFA6A1F4000-memory.dmp

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memory/5208-2-0x00007FFA69850000-0x00007FFA6A1F4000-memory.dmp

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memory/5208-3-0x0000016980020000-0x0000016980042000-memory.dmp

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memory/5208-1-0x00007FFA69850000-0x00007FFA6A1F4000-memory.dmp

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memory/5352-33-0x00000000004F0000-0x000000000050C000-memory.dmp

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