vjw0rm | 64a7d06b9738cead068c2fb63c961fd22ebb4c78d36a7416f6f8c47cca10163b

Analysis

max time kernel
149s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
04-11-2024 04:07

Target

8f11e325ac4400823e67e258fc1a4ed9_JaffaCakes118.js
Size

12KB
MD5

8f11e325ac4400823e67e258fc1a4ed9
SHA1

f37a67d9bc24dcdb3b77b6b488330d04b656929a
SHA256

64a7d06b9738cead068c2fb63c961fd22ebb4c78d36a7416f6f8c47cca10163b
SHA512

c51afd4082cc2e70520be6e1a480fb5bd5be9886848aae7347eaae121bb2bc65e56b4f37cb388b8fc063d9398ff55701684f7436faaeaae5d4aee6833411474a
SSDEEP

192:ey7guLpP0B6FSmV5k0p3QuGGhRuW2ZoWHzheY1bb7Iq7Lz4j/PKdENr1wr4VJmUj:e+g/B6FV5FQtGhcW8R99h3L4jHq2r1f7

Score

10^/10

Vjw0rm
Vjw0rm is a remote access trojan written in JavaScript.
trojan worm vjw0rm
Vjw0rm family
vjw0rm
Blocklisted process makes network request 6 IoCs

Processes:

wscript.exe

flow pid process

4 4232 wscript.exe
25 4232 wscript.exe
39 4232 wscript.exe
46 4232 wscript.exe
65 4232 wscript.exe
66 4232 wscript.exe
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.

Query Registry
T1012

System Information Discovery
T1082

Processes:

wscript.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation wscript.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	wscript.exe

Drops startup file 2 IoCs

Processes:

wscript.exe

description	ioc	process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\8f11e325ac4400823e67e258fc1a4ed9_JaffaCakes118.js	wscript.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\8f11e325ac4400823e67e258fc1a4ed9_JaffaCakes118.js	wscript.exe

Adds Run key to start application 2 TTPs 1 IoCs

Registry Run Keys / Startup Folder

Modify Registry

Processes:

wscript.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\O3FNWNFPWY = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\8f11e325ac4400823e67e258fc1a4ed9_JaffaCakes118.js\""	wscript.exe

Command and Scripting Interpreter: JavaScript 1 TTPs
execution

JavaScript
T1059.007
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence execution

Scheduled Task
T1053.005

Processes:

schtasks.exe

pid process

548 schtasks.exe

pid	process
548	schtasks.exe

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

wscript.exe

description	pid	process	target process
PID 4232 wrote to memory of 548	4232	wscript.exe	schtasks.exe
PID 4232 wrote to memory of 548	4232	wscript.exe	schtasks.exe

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\8f11e325ac4400823e67e258fc1a4ed9_JaffaCakes118.js
1⤵
- Blocklisted process makes network request
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:4232
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\8f11e325ac4400823e67e258fc1a4ed9_JaffaCakes118.js
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:548