vjw0rm | c76700dd7e3de8aabaa19309caa7a1b83f3a175778d1b374315cdb362d4f7b50

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
07-02-2024 07:27

Target

java.js
Size

504KB
MD5

f9a2f407e3a96b98798ead405013535c
SHA1

085a55fc5e128fe2e18aa4d17c4762bf86b051a2
SHA256

c76700dd7e3de8aabaa19309caa7a1b83f3a175778d1b374315cdb362d4f7b50
SHA512

f3c9d87e502a94492968ba5ca1f427f63e10ce137da773d5dc53376c9fcf907cbb4895c9150768a18a86fb6fb7a45e753c331e86ca24b94758a057f9758be332
SSDEEP

3072:U2I4IZk8bw+bDtRVP2QmYNWXo9phTMQ6EHqTNehzVqtSdbL6x7h2H+kzV4mWeOD0:U2I4IZkUVP2tYNWXoX/6qqTNeP

Score

10^/10

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

Blocklisted process makes network request 19 IoCs

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\java.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-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\WRQHVYEJFL = "\"C:\\Users\\Admin\\AppData\\Roaming\\java.js\""	wscript.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

Scheduled Task/Job

pid	Process
2004	schtasks.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2932 wrote to memory of 2004	2932	wscript.exe	30
PID 2932 wrote to memory of 2004	2932	wscript.exe	30
PID 2932 wrote to memory of 2004	2932	wscript.exe	30

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\java.js
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2932
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\java.js
  2⤵
  - Creates scheduled task(s)
  PID:2004