vjw0rm | dabba99a6651e2785e3b9910d32e8ea0e37bd75e9fd20731f308f0a65c6652c6

Analysis

max time kernel
149s
max time network
152s
platform
windows7_x64
resource
win7-20230712-en
resource tags

arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-x64system
submitted
27/07/2023, 11:36

Target

591cc603d2dd93e8b55647474da7600e.js
Size

26KB
MD5

591cc603d2dd93e8b55647474da7600e
SHA1

497c298b8dee8a9497819cdd22a76683af338c09
SHA256

dabba99a6651e2785e3b9910d32e8ea0e37bd75e9fd20731f308f0a65c6652c6
SHA512

c6436438e70bee2ef07eab5f990ac67a9b6ec091a88d214d72ddf9dca4149f2f7d1d0cadf9e58e11914e6a83559ac0c7d54a1e07d6ac9e674ca724c657e97b29
SSDEEP

768:tkMyzTR34YJjyS/cgVNzmop+Ghx+HXwrI:tpyzTyYUhaNzmWy37

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\591cc603d2dd93e8b55647474da7600e.js	wscript.exe

Adds Run key to start application 2 TTPs 2 IoCs

Registry Run Keys / Startup Folder

Modify Registry

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1014134971-2480516131-292343513-1000\Software\Microsoft\Windows\CurrentVersion\Run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1014134971-2480516131-292343513-1000\Software\Microsoft\Windows\CurrentVersion\Run\1CYH0WDT4T = "\"C:\\Users\\Admin\\AppData\\Roaming\\591cc603d2dd93e8b55647474da7600e.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
2308	schtasks.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1088 wrote to memory of 2308	1088	wscript.exe	29
PID 1088 wrote to memory of 2308	1088	wscript.exe	29
PID 1088 wrote to memory of 2308	1088	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\591cc603d2dd93e8b55647474da7600e.js
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1088
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\591cc603d2dd93e8b55647474da7600e.js
  2⤵
  - Creates scheduled task(s)
  PID:2308