vjw0rm | 0aa2dd1f59a1d55cd5021244c1d7383cadbef5363c22718a4d9e47610af30d95

Analysis

max time kernel
150s
max time network
158s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
21/03/2024, 03:38

Target

da985273a6ca8dfb6a17ff26956a2e71.js
Size

6KB
MD5

da985273a6ca8dfb6a17ff26956a2e71
SHA1

cda0aff65ed3c91b4788f2f7216831cb1ed563ac
SHA256

0aa2dd1f59a1d55cd5021244c1d7383cadbef5363c22718a4d9e47610af30d95
SHA512

e0220201e4e60f7b3b88d6908f4c00cadf8c2fdc6dedaa895ac95b4dbee3de8525b020366840d01701a4719f13e4b0a9b4fbcc9e899e8b5d2e278b265e1993bf
SSDEEP

192:QiPZL7nJuuuujra4G7Tbs5osDBHSB4KEzXbh:QMZPJuuuu/a3LDEh

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-1-5-21-557049126-2506969350-2798870634-1000\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\da985273a6ca8dfb6a17ff26956a2e71.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\da985273a6ca8dfb6a17ff26956a2e71.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-1-5-21-557049126-2506969350-2798870634-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MX1CAYIRN3 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\da985273a6ca8dfb6a17ff26956a2e71.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
1488	schtasks.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 3628 wrote to memory of 1488	3628	wscript.exe	91
PID 3628 wrote to memory of 1488	3628	wscript.exe	91

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\da985273a6ca8dfb6a17ff26956a2e71.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:3628
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\da985273a6ca8dfb6a17ff26956a2e71.js
  2⤵
  - Creates scheduled task(s)
  PID:1488