vjw0rm | d625b68606f5221ef6893109ebd3682ddef07dbdb120688fc1626305aeb1ff6a

Analysis

max time kernel
149s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
26-12-2024 20:07

Target

#UE00S802H.js
Size

13KB
MD5

8683ce7e2e7126ac6e0fc21e85a2ab19
SHA1

cdc1b5d86f240947f305ce8b3b63034250cb730c
SHA256

8af76d1916ebc77d52162659733ff74656dfa8955fc0d60e92dc1fb9a86c29fa
SHA512

5233f2f55356d00a776f2e067a0d5912ad99fc3016a7ff8cec4cf35ed3f3242251ed0d39dcc2d14928f32f22a0a00935049675a9e15488d9e8c627bd7b799530
SSDEEP

384:nwcWTi3WX/kepHiAGDuTnj/CXEiEZ6hfWcGHS6heo418S/BQx:ZWTTMepCOTjK0cRWVSfo4HA

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-1-5-21-493223053-2004649691-1575712786-1000\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\#UE00S802H.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\#UE00S802H.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-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MO5SWUOPWO = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\#UE00S802H.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
2132	schtasks.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 3472 wrote to memory of 2132	3472	wscript.exe	84
PID 3472 wrote to memory of 2132	3472	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\#UE00S802H.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:3472
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\#UE00S802H.js
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2132