vjw0rm | dabba99a6651e2785e3b9910d32e8ea0e37bd75e9fd20731f308f0a65c6652c6

Analysis

max time kernel
144s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20230703-en
resource tags

arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
submitted
27/07/2023, 11:36

Target

591cc603d2dd93e8b55647474da7600e.js
Size

26KB
MD5

591cc603d2dd93e8b55647474da7600e
SHA1

497c298b8dee8a9497819cdd22a76683af338c09
SHA256

dabba99a6651e2785e3b9910d32e8ea0e37bd75e9fd20731f308f0a65c6652c6
SHA512

c6436438e70bee2ef07eab5f990ac67a9b6ec091a88d214d72ddf9dca4149f2f7d1d0cadf9e58e11914e6a83559ac0c7d54a1e07d6ac9e674ca724c657e97b29
SSDEEP

768:tkMyzTR34YJjyS/cgVNzmop+Ghx+HXwrI:tpyzTyYUhaNzmWy37

Score

10^/10

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

Blocklisted process makes network request 16 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-1-5-21-1043950675-1972537973-2972532878-1000\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\591cc603d2dd93e8b55647474da7600e.js	wscript.exe

Adds Run key to start application 2 TTPs 2 IoCs

Registry Run Keys / Startup Folder

Modify Registry

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1043950675-1972537973-2972532878-1000\Software\Microsoft\Windows\CurrentVersion\Run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1043950675-1972537973-2972532878-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\1CYH0WDT4T = "\"C:\\Users\\Admin\\AppData\\Roaming\\591cc603d2dd93e8b55647474da7600e.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 1656 wrote to memory of 3336	1656	wscript.exe	88
PID 1656 wrote to memory of 3336	1656	wscript.exe	88

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\591cc603d2dd93e8b55647474da7600e.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:1656
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\591cc603d2dd93e8b55647474da7600e.js
  2⤵
  - Creates scheduled task(s)
  PID:3336