vjw0rm | 5fad065322759fdc6eb4e74afcdc5d3c02d910be9bcbc7c91b475fdc3b21cc4f

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
28-12-2024 23:52

Target

TV003_Invoice#02189.js
Size

14KB
MD5

1cd457729e7a388410439cb4e6f7f74e
SHA1

37440a4330cfaa27fc180f9055670accb09510dd
SHA256

2b2d82a9d85104bce3d431a7fcbacd4652b25ae367cfd41b13e582b375d53183
SHA512

8a8ad59baf571cba5130c8c619792cf0b62201c661398d9ec13267ced22f60117e9b585a95d63fb555c62bcdee361d2d641a52031f8b463a8ed87a911bab1100
SSDEEP

192:4POg185iwp9MAyf0IA0SLizr9SndcrkxkpZT29/A3q/ITAHCLp4F3zMGogva:D7rppXIjSpc0y4BAawcjzA

Score

10^/10

Vjw0rm
Vjw0rm is a remote access trojan written in JavaScript.
trojan worm vjw0rm
Vjw0rm family
vjw0rm

Blocklisted process makes network request 6 IoCs

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\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\TV003_Invoice#02189.js	wscript.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\TV003_Invoice#02189.js	wscript.exe

Adds Run key to start application 2 TTPs 1 IoCs

Registry Run Keys / Startup Folder

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\4LWQN8INDF = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\TV003_Invoice#02189.js\""	wscript.exe

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

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

Scheduled Task

pid	Process
4536	schtasks.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 1468 wrote to memory of 4536	1468	wscript.exe	84
PID 1468 wrote to memory of 4536	1468	wscript.exe	84

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
wscript.exe C:\Users\Admin\AppData\Local\Temp\TV003_Invoice#02189.js
1⤵
- Blocklisted process makes network request
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1468
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\TV003_Invoice#02189.js
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:4536