vjw0rm | 5fad065322759fdc6eb4e74afcdc5d3c02d910be9bcbc7c91b475fdc3b21cc4f

Analysis

max time kernel
143s
max time network
147s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-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

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\TV003_Invoice#02189.js	wscript.exe
File opened for modification	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-1-5-21-4177215427-74451935-3209572229-1000\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
272	schtasks.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2304 wrote to memory of 272	2304	wscript.exe	31
PID 2304 wrote to memory of 272	2304	wscript.exe	31
PID 2304 wrote to memory of 272	2304	wscript.exe	31

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
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2304
- 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:272