vjw0rm | 6f99bf12062ceef775d487c08e144365581766a83c1db9d77f8e7aec5200b8a5

Analysis

max time kernel
151s
max time network
159s
platform
windows7_x64
resource
win7-20230831-en
resource tags

arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
submitted
12-10-2023 10:26

Target

Dekont.js
Size

24KB
MD5

a009678a453e743ca3b705eedbc11da0
SHA1

d0cadeb8a36a4b31d11c6b0e863a7da83c065d12
SHA256

1212ff50fe2a273f343459baeb52dd3c3c52352d253447bfce423d378b8b7d56
SHA512

6aa0d8455bb7db70971886ec80c20648da35ec5ef3c6b80f5b3fefa21156aa21b23ccd6e65f066018dd1f5a45d45a8bcaecd2511ffbea9a734eb0de1292c85f3
SSDEEP

768:w8zez+dgOrfp0rYOaNnWGUkUj/N3uO6O2Qtl:3zez+dgC+rpaRR/CF6O2QX

Score

10^/10

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

Blocklisted process makes network request 18 IoCs

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Dekont.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-1-5-21-86725733-3001458681-3405935542-1000\Software\Microsoft\Windows\CurrentVersion\Run\2RJZ4PQJPY = "\"C:\\Users\\Admin\\AppData\\Roaming\\Dekont.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
2904	schtasks.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2552 wrote to memory of 2904	2552	wscript.exe	29
PID 2552 wrote to memory of 2904	2552	wscript.exe	29
PID 2552 wrote to memory of 2904	2552	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\Dekont.js
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2552
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\Dekont.js
  2⤵
  - Creates scheduled task(s)
  PID:2904