vjw0rm | 64a7d06b9738cead068c2fb63c961fd22ebb4c78d36a7416f6f8c47cca10163b

Analysis

max time kernel
146s
max time network
149s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
04-11-2024 04:07

Target

8f11e325ac4400823e67e258fc1a4ed9_JaffaCakes118.js
Size

12KB
MD5

8f11e325ac4400823e67e258fc1a4ed9
SHA1

f37a67d9bc24dcdb3b77b6b488330d04b656929a
SHA256

64a7d06b9738cead068c2fb63c961fd22ebb4c78d36a7416f6f8c47cca10163b
SHA512

c51afd4082cc2e70520be6e1a480fb5bd5be9886848aae7347eaae121bb2bc65e56b4f37cb388b8fc063d9398ff55701684f7436faaeaae5d4aee6833411474a
SSDEEP

192:ey7guLpP0B6FSmV5k0p3QuGGhRuW2ZoWHzheY1bb7Iq7Lz4j/PKdENr1wr4VJmUj:e+g/B6FV5FQtGhcW8R99h3L4jHq2r1f7

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 opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\8f11e325ac4400823e67e258fc1a4ed9_JaffaCakes118.js	wscript.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\8f11e325ac4400823e67e258fc1a4ed9_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-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Run\O3FNWNFPWY = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\8f11e325ac4400823e67e258fc1a4ed9_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
2412	schtasks.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2368 wrote to memory of 2412	2368	wscript.exe	31
PID 2368 wrote to memory of 2412	2368	wscript.exe	31
PID 2368 wrote to memory of 2412	2368	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\8f11e325ac4400823e67e258fc1a4ed9_JaffaCakes118.js
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2368
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\8f11e325ac4400823e67e258fc1a4ed9_JaffaCakes118.js
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2412