vjw0rm | 3852e3e3d446bb7feb8ca29573f2967360624e5a1bb0910dbb3a3e5dd686a948

Analysis

max time kernel
152s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231023-en
resource tags

arch:x64arch:x86image:win10v2004-20231023-enlocale:en-usos:windows10-2004-x64system
submitted
21-11-2023 02:00

Target

1.js
Size

23KB
MD5

0fec59fc91143d58dfe0f0f14d4e5f08
SHA1

76de24642195a5b6a14281fdbc457bc614916eba
SHA256

94d7bd6201394056c5732fdf0064a2217edd83816f5805ff91b5db0b8f52f7a3
SHA512

2278800a84137d9027ca95225ed7fd6cd06b34c7939464583cfd64e22db0217958b87d0584020fa38d0db3fbb33434b978b56e63651df716ac99580eac0f52be
SSDEEP

384:Fuv8G5Esgus0/0tW2KPM3Ce5/F7C4sEgGz38dOQIOlkDxDM/5xAUZvqIRyi:gvVUusQrcCe5/F7C4sEzzMMQDlkdQ/7j

Score

10^/10

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

Blocklisted process makes network request 16 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-1-5-21-3125601242-331447593-1512828465-1000\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\1.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-1-5-21-3125601242-331447593-1512828465-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\2RJZ4PQJPY = "\"C:\\Users\\Admin\\AppData\\Roaming\\1.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
952	schtasks.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 2924 wrote to memory of 952	2924	wscript.exe	92
PID 2924 wrote to memory of 952	2924	wscript.exe	92

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\1.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:2924
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\1.js
  2⤵
  - Creates scheduled task(s)
  PID:952