vjw0rm | 73484c34ca7516e9da574b6abc0226184d600eb4fdfd84114819b182fa355a1d

Analysis

max time kernel
141s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
21-09-2024 21:10

Target

f09ea4cb206a6520f888d9d380bcc1fa_JaffaCakes118.js
Size

4KB
MD5

f09ea4cb206a6520f888d9d380bcc1fa
SHA1

5dd7210ef96999e0eb9e10e6ed473b7d5a5aa41b
SHA256

73484c34ca7516e9da574b6abc0226184d600eb4fdfd84114819b182fa355a1d
SHA512

a35dbdaba49a2740708cb5a1490778411d62c52e38e4cffdd5055ad1dd02638fbcd373fca8ea649f1f81aa841fe9ae0cbc90bd6159ea4ffba20826cd7e81a410
SSDEEP

96:9Y4OfJwKCl/LEmSpJdus7Pe9p4G9rNIN63NIDuL563YuwH0EcNUiA/YIhNC2MY3f:9YbfJi/LyxjDe9PQNvuNvuwRcTYNJMYP

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-1-5-21-2412658365-3084825385-3340777666-1000\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\f09ea4cb206a6520f888d9d380bcc1fa_JaffaCakes118.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\f09ea4cb206a6520f888d9d380bcc1fa_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-1-5-21-2412658365-3084825385-3340777666-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\WRKX0O3JEM = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\f09ea4cb206a6520f888d9d380bcc1fa_JaffaCakes118.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
4328	schtasks.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 2180 wrote to memory of 4328	2180	wscript.exe	83
PID 2180 wrote to memory of 4328	2180	wscript.exe	83

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\f09ea4cb206a6520f888d9d380bcc1fa_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:2180
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\f09ea4cb206a6520f888d9d380bcc1fa_JaffaCakes118.js
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:4328