vjw0rm | e735d8a4c0a6b26e3b15cfa8f5d917cad6f20fd2e948a706bf832c17ecefecd0

Analysis

max time kernel
149s
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
07-01-2025 02:18

Target

JaffaCakes118_47df1ed785e92db6d5596a0b096d7b7f.js
Size

3KB
MD5

47df1ed785e92db6d5596a0b096d7b7f
SHA1

f3c30187cb9b60fe2358eb5aa0ec8c5022e5fed6
SHA256

e735d8a4c0a6b26e3b15cfa8f5d917cad6f20fd2e948a706bf832c17ecefecd0
SHA512

290366655337057615937929d2cad7f8749817575d7c67620bba68e2723b48151c38e379c4bfd45d75f918c59f0d774b8767dfee08565d02aef8e1b99a405887

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\JaffaCakes118_47df1ed785e92db6d5596a0b096d7b7f.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\JaffaCakes118_47df1ed785e92db6d5596a0b096d7b7f.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\JSD45AX8J6 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\JaffaCakes118_47df1ed785e92db6d5596a0b096d7b7f.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
688	schtasks.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 3084 wrote to memory of 688	3084	wscript.exe	84
PID 3084 wrote to memory of 688	3084	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\JaffaCakes118_47df1ed785e92db6d5596a0b096d7b7f.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:3084
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_47df1ed785e92db6d5596a0b096d7b7f.js
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:688