vjw0rm | 2de716414a5246e7d4f1d9679a9c5fdefd194c30807331d05798253ebceb87a2

Analysis

max time kernel
142s
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
22/12/2024, 12:36

Target

#CHOO1.js
Size

17KB
MD5

fac61c5e8f3026c1a1b63c21423a2701
SHA1

c14c72c7e99a1b8166d009a89c8f6b1111a8da2a
SHA256

77307f92ac36d5dce119e092099842fedd2f37432b578914af22b7ad7c1ccf94
SHA512

19f7420a6cf00f25c75dd3205823645b2f3e0f77d8b817c9c1e22a9c36799e2efb880d26e886bbf9c7d6de413f8c5fe2ad3a88a6eb9b2761fde00506bd14a711
SSDEEP

384:bv4FxNXwil3u4W430GvACEOyMU+qxl249TmO0XNWj7WKSKmFlKl:L4F/l3Q2ZEOG+hKTmOrfWlKl

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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	wscript.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\#CHOO1.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\#CHOO1.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-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\PU6BS6WNLD = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\#CHOO1.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
960	schtasks.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 4576 wrote to memory of 960	4576	wscript.exe	84
PID 4576 wrote to memory of 960	4576	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\#CHOO1.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:4576
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\#CHOO1.js
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:960