vjw0rm | 75b0226eeb4fe55f6dbd96a3b74f60b8c22a3fbba82641bf694df05c3b49f31b

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
17-10-2024 14:52

Target

526b73ec2f62a607bc9bac7c3da6ce33_JaffaCakes118.js
Size

11KB
MD5

526b73ec2f62a607bc9bac7c3da6ce33
SHA1

dd80c19d4d602294ad2191dd44fb818f501157ed
SHA256

75b0226eeb4fe55f6dbd96a3b74f60b8c22a3fbba82641bf694df05c3b49f31b
SHA512

126263bd32ded7472ca16290759de63869bc2f31e0c94234336acd733226851495ac3c498c9e24ad89a793e27fb2b96fb7e67db114828ffe9730171f7e31dccf
SSDEEP

192:eVfpihB+WGxkPS10xkCnn+/PVUxjxhUFhe2nn/VCvVS1j9B0EyTxTGmgqhK:eVQhYWGaoxCnn+/PVUWTj6VyT0ZxPgyK

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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	wscript.exe

Drops startup file 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\526b73ec2f62a607bc9bac7c3da6ce33_JaffaCakes118.js	wscript.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\526b73ec2f62a607bc9bac7c3da6ce33_JaffaCakes118.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-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\O3FNWNFPWY = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\526b73ec2f62a607bc9bac7c3da6ce33_JaffaCakes118.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
1312	schtasks.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 1204 wrote to memory of 1312	1204	wscript.exe	87
PID 1204 wrote to memory of 1312	1204	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\526b73ec2f62a607bc9bac7c3da6ce33_JaffaCakes118.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:1204
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\526b73ec2f62a607bc9bac7c3da6ce33_JaffaCakes118.js
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:1312