vjw0rm | b91e92bc3dd5d7eddb8c10f8aee1429f262b4cd033e4d1847c7eaf180a0120eb

Analysis

max time kernel
149s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
07-04-2024 00:06

Target

e39be287d5161038ddeaa6ebbca80151_JaffaCakes118.js
Size

11KB
MD5

e39be287d5161038ddeaa6ebbca80151
SHA1

0ab208083961f5054b4042eb86eb1d195701d89d
SHA256

b91e92bc3dd5d7eddb8c10f8aee1429f262b4cd033e4d1847c7eaf180a0120eb
SHA512

f524bc2967f94cf6a56e6461e2b5daf4ceef86dc5bf53b15e0c199626c447a4009d632153bc391e54698960f30645866d62865c0f91d7a3be7cd363d844ff8a0
SSDEEP

192:fYmQfHbdlbNiTGh0a3VhWNGKXy0w1G75fERC5DfBABEgFLYogETfciuD9JKSzTe3:YdlAq0aDWNGSy0w0Sk9AigFLKKPuvza3

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-1-5-21-983155329-280873152-1838004294-1000\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\e39be287d5161038ddeaa6ebbca80151_JaffaCakes118.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\e39be287d5161038ddeaa6ebbca80151_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-1-5-21-983155329-280873152-1838004294-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\JX0T7EQ31M = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\e39be287d5161038ddeaa6ebbca80151_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
2832	schtasks.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 3660 wrote to memory of 2832	3660	wscript.exe	89
PID 3660 wrote to memory of 2832	3660	wscript.exe	89

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\e39be287d5161038ddeaa6ebbca80151_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:3660
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\e39be287d5161038ddeaa6ebbca80151_JaffaCakes118.js
  2⤵
  - Creates scheduled task(s)
  PID:2832