vjw0rm | 621e2bdac8e7b01a1f6823496ecffa8aa552136dc11bfdbb88be2b44d59ede57

Analysis

max time kernel
141s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
29-12-2024 04:20

Target

ESDAOPMDGJW.js
Size

55KB
MD5

1a2ea3f42fd43a6d0133f11b1c4f3a01
SHA1

dac15bb13bf9336397405bb6d4b8499823b1bf96
SHA256

670632fdc0765b6ffb85dea661fc69f1e03ac526e19c135e0279d1656c350f93
SHA512

cbdf9180fc765d827a732bfbabd1a733d8577b3da7bd33bfc22cba614d162dd502cc21ba932fbfbf662832dd5065f2af183b8f7a774b34405de93372b6768c9c
SSDEEP

1536:qmKaAanF8vaZtN64aSY5fk+bimL5wBfEGKRd:iaAanIaZtN64aSY572U5sId

Score

10^/10

Vjw0rm
Vjw0rm is a remote access trojan written in JavaScript.
trojan worm vjw0rm
Vjw0rm family
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-1-5-21-940901362-3608833189-1915618603-1000\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\ESDAOPMDGJW.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ESDAOPMDGJW.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-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\POXI8QWF6K = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\ESDAOPMDGJW.js\""	wscript.exe

Command and Scripting Interpreter: JavaScript 1 TTPs
execution

JavaScript
T1059.007
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

Scheduled Task

pid	Process
2380	schtasks.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 2028 wrote to memory of 2380	2028	wscript.exe	85
PID 2028 wrote to memory of 2380	2028	wscript.exe	85

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\ESDAOPMDGJW.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:2028
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\ESDAOPMDGJW.js
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2380