vjw0rm | 2b72f018808ce809de7cc73ba997d14b3c9acbe3ce6d13826d3b98c8eabe2cdd

Analysis

max time kernel
149s
max time network
148s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
27-02-2024 07:51

Target

a89fe76f3a4a948ed06f3025f4f0a1d8.js
Size

9KB
MD5

a89fe76f3a4a948ed06f3025f4f0a1d8
SHA1

f747e3602aad40383aad9b3623033d6af082d380
SHA256

2b72f018808ce809de7cc73ba997d14b3c9acbe3ce6d13826d3b98c8eabe2cdd
SHA512

1778dd3b1fb3d7ff6ce39c2b133f4bde7c56447f7bfbd5e2562a37b4811cf59979f83ed1644a9c1e9ff4b58894d3e29a8b08b0d349c7218d3864bdf22457234e
SSDEEP

192:eHcOgeLYvTE/2gx/4sorG6RkbA62+vph+JxmTVRmfmdbBzWXioSDmmNXd:e8ZeLYvTEO64G6R16BphMgjmSTmCXd

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\a89fe76f3a4a948ed06f3025f4f0a1d8.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\a89fe76f3a4a948ed06f3025f4f0a1d8.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-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\VXBM5F7PI1 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\a89fe76f3a4a948ed06f3025f4f0a1d8.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
2968	schtasks.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2208 wrote to memory of 2968	2208	wscript.exe	29
PID 2208 wrote to memory of 2968	2208	wscript.exe	29
PID 2208 wrote to memory of 2968	2208	wscript.exe	29

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\a89fe76f3a4a948ed06f3025f4f0a1d8.js
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2208
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\a89fe76f3a4a948ed06f3025f4f0a1d8.js
  2⤵
  - Creates scheduled task(s)
  PID:2968