vjw0rm | 2b72f018808ce809de7cc73ba997d14b3c9acbe3ce6d13826d3b98c8eabe2cdd

Analysis

max time kernel
147s
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
27-02-2024 07:51

Target

a89fe76f3a4a948ed06f3025f4f0a1d8.js
Size

9KB
MD5

a89fe76f3a4a948ed06f3025f4f0a1d8
SHA1

f747e3602aad40383aad9b3623033d6af082d380
SHA256

2b72f018808ce809de7cc73ba997d14b3c9acbe3ce6d13826d3b98c8eabe2cdd
SHA512

1778dd3b1fb3d7ff6ce39c2b133f4bde7c56447f7bfbd5e2562a37b4811cf59979f83ed1644a9c1e9ff4b58894d3e29a8b08b0d349c7218d3864bdf22457234e
SSDEEP

192:eHcOgeLYvTE/2gx/4sorG6RkbA62+vph+JxmTVRmfmdbBzWXioSDmmNXd:e8ZeLYvTEO64G6R16BphMgjmSTmCXd

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-1-5-21-3045580317-3728985860-206385570-1000\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\a89fe76f3a4a948ed06f3025f4f0a1d8.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\a89fe76f3a4a948ed06f3025f4f0a1d8.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-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\VXBM5F7PI1 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\a89fe76f3a4a948ed06f3025f4f0a1d8.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
1280	schtasks.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 3224 wrote to memory of 1280	3224	wscript.exe	84
PID 3224 wrote to memory of 1280	3224	wscript.exe	84

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\a89fe76f3a4a948ed06f3025f4f0a1d8.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:3224
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\a89fe76f3a4a948ed06f3025f4f0a1d8.js
  2⤵
  - Creates scheduled task(s)
  PID:1280