vjw0rm | 47db324fe95c246da48fe4c085c0d835c68d107ed1c19aa2d957d1acd1bc1c24

Analysis

max time kernel
144s
max time network
150s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
06-01-2025 00:28

Target

JaffaCakes118_03e2273476d1f37afc635d397e348e26.js
Size

10KB
MD5

03e2273476d1f37afc635d397e348e26
SHA1

f117888480345fa24c3265ee42f2e41203369f5c
SHA256

47db324fe95c246da48fe4c085c0d835c68d107ed1c19aa2d957d1acd1bc1c24
SHA512

05b628e15a77f2b92f0ce0405aee88feac42bc86ecef80f1c57d1a03f6567bec005b2ec10b635b808468904a36aaa4f20010e69a1ba13ceda44749fb062a5201
SSDEEP

192:lmFoi/C7jd8zoe+nidBz5Oh2kaVkFys1Mwab3xh1jD8aYrtSUF:lmFZ/C7RWzK2582VyExBh1jD0tSe

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_03e2273476d1f37afc635d397e348e26.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\JaffaCakes118_03e2273476d1f37afc635d397e348e26.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-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Run\F4ZGVI2L3S = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\JaffaCakes118_03e2273476d1f37afc635d397e348e26.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
2908	schtasks.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2096 wrote to memory of 2908	2096	wscript.exe	31
PID 2096 wrote to memory of 2908	2096	wscript.exe	31
PID 2096 wrote to memory of 2908	2096	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\JaffaCakes118_03e2273476d1f37afc635d397e348e26.js
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2096
- 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_03e2273476d1f37afc635d397e348e26.js
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2908