vjw0rm | 5518f5e20b27a4b10ebc7abce37c733ab532354b5db6aed7edf19c25caba2ff3

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
30/03/2024, 15:20

Target
3e7dd715a15046585cb8034a1fa847b3_JaffaCakes118.js
Size 12KB
Sample240330-sq511agh2w
SHA256 5518f5e20b27a4b10ebc7abce37c733ab532354b5db6aed7edf19c25caba2ff3
MD5 3e7dd715a15046585cb8034a1fa847b3
SHA1 4cbe1b633a7859821c0b7082385407cb140a0ba5
SHA512 42777bf0328fe9844aa93e8394f11aba8d02d6bbc77980da2c22bb5b9f9a646763ed4506976dfbf3d2476ca63fbc0845bb5be64c3a6c745daffdd7f7d85f960a
SSDEEP 384:Y7z4C7+owFhl3rwUY5mn33QPHOS2A9P2N:Y7zV+ow5qk3AOSx9q
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

Vjw0rm
Vjw0rm is a remote access trojan written in JavaScript.
trojan worm 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-1-5-21-399997616-3400990511-967324271-1000\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\3e7dd715a15046585cb8034a1fa847b3_JaffaCakes118.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\3e7dd715a15046585cb8034a1fa847b3_JaffaCakes118.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-1-5-21-399997616-3400990511-967324271-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\6ID7YY2BDP = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\3e7dd715a15046585cb8034a1fa847b3_JaffaCakes118.js\""	wscript.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

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

Scheduled Task/Job

pid	Process
212	schtasks.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 60 wrote to memory of 212	60	wscript.exe	88
PID 60 wrote to memory of 212	60	wscript.exe	88

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\3e7dd715a15046585cb8034a1fa847b3_JaffaCakes118.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:60
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\3e7dd715a15046585cb8034a1fa847b3_JaffaCakes118.js
  2⤵
  - Creates scheduled task(s)
  PID:212