vjw0rm | e735d8a4c0a6b26e3b15cfa8f5d917cad6f20fd2e948a706bf832c17ecefecd0

Analysis

max time kernel
147s
max time network
152s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
07-01-2025 02:18

Target

JaffaCakes118_47df1ed785e92db6d5596a0b096d7b7f.js
Size

3KB
MD5

47df1ed785e92db6d5596a0b096d7b7f
SHA1

f3c30187cb9b60fe2358eb5aa0ec8c5022e5fed6
SHA256

e735d8a4c0a6b26e3b15cfa8f5d917cad6f20fd2e948a706bf832c17ecefecd0
SHA512

290366655337057615937929d2cad7f8749817575d7c67620bba68e2723b48151c38e379c4bfd45d75f918c59f0d774b8767dfee08565d02aef8e1b99a405887

Score

10^/10

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

Blocklisted process makes network request 6 IoCs

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\JaffaCakes118_47df1ed785e92db6d5596a0b096d7b7f.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\JaffaCakes118_47df1ed785e92db6d5596a0b096d7b7f.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-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\JSD45AX8J6 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\JaffaCakes118_47df1ed785e92db6d5596a0b096d7b7f.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
1692	schtasks.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2052 wrote to memory of 1692	2052	wscript.exe	32
PID 2052 wrote to memory of 1692	2052	wscript.exe	32
PID 2052 wrote to memory of 1692	2052	wscript.exe	32

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\JaffaCakes118_47df1ed785e92db6d5596a0b096d7b7f.js
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2052
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_47df1ed785e92db6d5596a0b096d7b7f.js
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:1692