vjw0rm | 47db324fe95c246da48fe4c085c0d835c68d107ed1c19aa2d957d1acd1bc1c24

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
06-01-2025 00:28

Target

JaffaCakes118_03e2273476d1f37afc635d397e348e26.js
Size

10KB
MD5

03e2273476d1f37afc635d397e348e26
SHA1

f117888480345fa24c3265ee42f2e41203369f5c
SHA256

47db324fe95c246da48fe4c085c0d835c68d107ed1c19aa2d957d1acd1bc1c24
SHA512

05b628e15a77f2b92f0ce0405aee88feac42bc86ecef80f1c57d1a03f6567bec005b2ec10b635b808468904a36aaa4f20010e69a1ba13ceda44749fb062a5201
SSDEEP

192:lmFoi/C7jd8zoe+nidBz5Oh2kaVkFys1Mwab3xh1jD8aYrtSUF:lmFZ/C7RWzK2582VyExBh1jD0tSe

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-1-5-21-2878641211-696417878-3864914810-1000\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_03e2273476d1f37afc635d397e348e26.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\JaffaCakes118_03e2273476d1f37afc635d397e348e26.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-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\F4ZGVI2L3S = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\JaffaCakes118_03e2273476d1f37afc635d397e348e26.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
1188	schtasks.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 4304 wrote to memory of 1188	4304	wscript.exe	84
PID 4304 wrote to memory of 1188	4304	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_03e2273476d1f37afc635d397e348e26.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:4304
- 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_03e2273476d1f37afc635d397e348e26.js
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:1188