vjw0rm | a1ee2ea563a62ce42f154749f225613c13b6c5568a0e4d955a2c09895ac1a26e

Analysis

max time kernel
148s
max time network
148s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
25-01-2024 21:18

Target

758a8716e34bdc7cc046fcb9383216d9.js
Size

9KB
MD5

758a8716e34bdc7cc046fcb9383216d9
SHA1

5faac5dd55211b967333205e71b9d934b14e88b5
SHA256

a1ee2ea563a62ce42f154749f225613c13b6c5568a0e4d955a2c09895ac1a26e
SHA512

1fba12f0bc766bcd8ebc3203dd2ef833f0f34f4fd53f435d9f224e97ba450886bb6ecf1aab92cc912a7eaa3e31e100f650a386051438449fcc01f01afa9acbb7
SSDEEP

192:Q26V2Z59QMw8PlV0jwwYMtZ3i9LujB/52g5wip0ii/c6foy4jhRB:QzVs59oFj7P3v2g5zMFfoyIF

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\758a8716e34bdc7cc046fcb9383216d9.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\758a8716e34bdc7cc046fcb9383216d9.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-1-5-21-3601492379-692465709-652514833-1000\Software\Microsoft\Windows\CurrentVersion\Run\MX1CAYIRN3 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\758a8716e34bdc7cc046fcb9383216d9.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
1796	schtasks.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2868 wrote to memory of 1796	2868	wscript.exe	29
PID 2868 wrote to memory of 1796	2868	wscript.exe	29
PID 2868 wrote to memory of 1796	2868	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\758a8716e34bdc7cc046fcb9383216d9.js
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2868
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\758a8716e34bdc7cc046fcb9383216d9.js
  2⤵
  - Creates scheduled task(s)
  PID:1796