vjw0rm | 510b335ce718d50da78a27b1750e2af1b18994b10e550c78c61a4491976eb974

Analysis

max time kernel
142s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
25/12/2023, 09:38

Target
14bf111a8393a7293bcedcb4836c9be0.js
Size 9KB
Sample231225-lmf45saed3
SHA256 510b335ce718d50da78a27b1750e2af1b18994b10e550c78c61a4491976eb974
MD5 14bf111a8393a7293bcedcb4836c9be0
SHA1 ba000e395f99d5be511c4212dc80a4609d342a4b
SHA512 60180d69e6db7711fa934a4e81aa69445c14a171220567f1a028673a45ee450eea3f1639a83dbc3ce00f87cdb06e713a460631f3eda308f74c85cdf8e5f23cac
SSDEEP 192:QJcM9Z0N7lk8ksoAsNJIS7WBUeaZTOVwBBnCCzxtNLFH5EOKxOOQ:QZ9Z8768ksoAs/IQneaZCVspdzxrFHBb
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-1-5-21-1232405761-1209240240-3206092754-1000\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\14bf111a8393a7293bcedcb4836c9be0.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\14bf111a8393a7293bcedcb4836c9be0.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-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MX1CAYIRN3 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\14bf111a8393a7293bcedcb4836c9be0.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
4972	schtasks.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 2484 wrote to memory of 4972	2484	wscript.exe	108
PID 2484 wrote to memory of 4972	2484	wscript.exe	108

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\14bf111a8393a7293bcedcb4836c9be0.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:2484
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\14bf111a8393a7293bcedcb4836c9be0.js
  2⤵
  - Creates scheduled task(s)
  PID:4972