vjw0rm | b959f4a0000dfd9a05f84022d4d08d6876ef7c8629e9a66d75dc4bfb0707b93e

Analysis

max time kernel
140s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
26-12-2023 03:46

Target

51870c24bd72f9fd10a0eef0f479e2b6.js
Size

9KB
MD5

51870c24bd72f9fd10a0eef0f479e2b6
SHA1

384138c6f53dabafbabc8431d35d8ce9c536d282
SHA256

b959f4a0000dfd9a05f84022d4d08d6876ef7c8629e9a66d75dc4bfb0707b93e
SHA512

ff8c5623663bd37cfc5dba1063b0309df60ed50f7d931fcd31ca9dd159cb344bbad9a953cf67bce9c910ebd5564d9bf2ff1438d8a564f997e615761d76c79a79
SSDEEP

192:QfEwAGGp9IDNc3JP3nhoxkUykZ3hO65jDAji9JUY:QMZGGXN5P3nhNpCxOiUjinUY

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-1-5-21-768304381-2824894965-3840216961-1000\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\51870c24bd72f9fd10a0eef0f479e2b6.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\51870c24bd72f9fd10a0eef0f479e2b6.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-1-5-21-768304381-2824894965-3840216961-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MX1CAYIRN3 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\51870c24bd72f9fd10a0eef0f479e2b6.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
3276	schtasks.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 3800 wrote to memory of 3276	3800	wscript.exe	21
PID 3800 wrote to memory of 3276	3800	wscript.exe	21

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\51870c24bd72f9fd10a0eef0f479e2b6.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:3800
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\51870c24bd72f9fd10a0eef0f479e2b6.js
  2⤵
  - Creates scheduled task(s)
  PID:3276