vjw0rm | 81f1d78c95edb2952a13f5ec068a3b30be04c4e128c6348bc07439a4f4fdd82c

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, 02:19

Target

737ab81779d546b3ccc019569acb0269.js
Size

6KB
MD5

737ab81779d546b3ccc019569acb0269
SHA1

d746edccdfb5ba9f357ab6a6281c1c09c25b5912
SHA256

81f1d78c95edb2952a13f5ec068a3b30be04c4e128c6348bc07439a4f4fdd82c
SHA512

961b5f3f1913595352914bd159c34d3767b96494a5be211cd69dbe64f921b29a12321498298ee0c93e3b2c85a443c0fd9b4593dc73fe3266e8517e17e5bfa951
SSDEEP

192:Q5oLzuRWuuuuKtCbkIHHxcggPn5wDy4jn116My3:Q5oHKWuuuuJ3CggPMbY

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\737ab81779d546b3ccc019569acb0269.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\737ab81779d546b3ccc019569acb0269.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\GF5EHB4I0U = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\737ab81779d546b3ccc019569acb0269.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
2636	schtasks.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2148 wrote to memory of 2636	2148	wscript.exe	29
PID 2148 wrote to memory of 2636	2148	wscript.exe	29
PID 2148 wrote to memory of 2636	2148	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\737ab81779d546b3ccc019569acb0269.js
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2148
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\737ab81779d546b3ccc019569acb0269.js
  2⤵
  - Creates scheduled task(s)
  PID:2636