vjw0rm | 75b0226eeb4fe55f6dbd96a3b74f60b8c22a3fbba82641bf694df05c3b49f31b

Analysis

max time kernel
148s
max time network
148s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-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 7 IoCs

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\526b73ec2f62a607bc9bac7c3da6ce33_JaffaCakes118.js	wscript.exe
File opened for modification	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-1-5-21-2703099537-420551529-3771253338-1000\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
2052	schtasks.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1760 wrote to memory of 2052	1760	wscript.exe	31
PID 1760 wrote to memory of 2052	1760	wscript.exe	31
PID 1760 wrote to memory of 2052	1760	wscript.exe	31

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
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1760
- 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:2052