vjw0rm | a4ef0bc3f82a7a6537974caa2a3c8cbcc1611aca0c80303591bcd401f05b3a2f

Analysis

max time kernel
143s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20230831-en
resource tags

arch:x64arch:x86image:win10v2004-20230831-enlocale:en-usos:windows10-2004-x64system
submitted
01-09-2023 14:04

Target

DOC290823-29082023144405.js
Size

24KB
MD5

4bd43de1ae996231fc4bdad4e31acc18
SHA1

40867d1931e30eea677eceb397e29bece3bbc348
SHA256

a4ef0bc3f82a7a6537974caa2a3c8cbcc1611aca0c80303591bcd401f05b3a2f
SHA512

d49612cc30985c7453ee7366514cd501ad7b4ae27c24e71def2fee63f276779ff6cb02b24d4165ee6ba3e9c2ba8f1dcfc3e79a1fb47f85608996c7b2c0e8fca6
SSDEEP

768:xjbJzKjG920H6q7DLW4pewkrEHIYz9E3HgR:BNeG9T6qzHqrEoYhigR

Score

10^/10

Family

vjw0rm

http://severdops.ddns.net:5050

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

Blocklisted process makes network request 1 IoCs

flow	pid	Process
19	876	wscript.exe

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-1-5-21-528036852-1341495193-1175965888-1000\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\DOC290823-29082023144405.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-1-5-21-528036852-1341495193-1175965888-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\2RJZ4PQJPY = "\"C:\\Users\\Admin\\AppData\\Roaming\\DOC290823-29082023144405.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
3336	schtasks.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 876 wrote to memory of 3336	876	wscript.exe	87
PID 876 wrote to memory of 3336	876	wscript.exe	87

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\DOC290823-29082023144405.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:876
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\DOC290823-29082023144405.js
  2⤵
  - Creates scheduled task(s)
  PID:3336