vjw0rm | 59f8cd4a8082917464fa030dbf1bc90f99d12f30fc4ba6cd3723db42ca9b12f7

Analysis

max time kernel
99s
max time network
143s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
07/01/2024, 19:06

Target
a0f6fb7fa7c1cfcdbbfc67d307c74083.js
Size 8KB
Sample240107-xsd3hschd5
SHA256 59f8cd4a8082917464fa030dbf1bc90f99d12f30fc4ba6cd3723db42ca9b12f7
MD5 a0f6fb7fa7c1cfcdbbfc67d307c74083
SHA1 58341f91d689f92a4a6918437d753deda79ebf4f
SHA512 5971476bc95241d03fe173a9f253eacc1c9efc8af065b71e32b31d221efe82f892c372fa8851dd61b86593bc776255ef9c664a15cf4549f9048eee69a3cc4873
SSDEEP 192:h9ohUmsP4t/HFLFm1Fc32LyrBfs+in3RDfFkqQfnB/DoAn4JKv1eg3:gFsgtvFEiG+lfs+U3RDfFkqYhDoAn4J6
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

Vjw0rm
Vjw0rm is a remote access trojan written in JavaScript.
trojan worm vjw0rm

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-1-5-21-3791175113-1062217823-1177695025-1000\Control Panel\International\Geo\Nation	wscript.exe

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\a0f6fb7fa7c1cfcdbbfc67d307c74083.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-1-5-21-3791175113-1062217823-1177695025-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\JJM3W6LMN3 = "\"C:\\Users\\Admin\\AppData\\Roaming\\a0f6fb7fa7c1cfcdbbfc67d307c74083.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
4840	schtasks.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 3204 wrote to memory of 4840	3204	wscript.exe	88
PID 3204 wrote to memory of 4840	3204	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\a0f6fb7fa7c1cfcdbbfc67d307c74083.js
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:3204
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\a0f6fb7fa7c1cfcdbbfc67d307c74083.js
  2⤵
  - Creates scheduled task(s)
  PID:4840