vjw0rm | 64efc2c066eb36eae5d2904e727f096dbe36258710235b99391f7fde8bb169b0

Analysis

max time kernel
148s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
25-12-2024 00:01

Target

JaffaCakes118_64efc2c066eb36eae5d2904e727f096dbe36258710235b99391f7fde8bb169b0.js
Size

54KB
MD5

9bd30c870827786006549e2b7aad9af9
SHA1

69540b76ef13f8ba496e4c05ffb5480fc7b244b2
SHA256

64efc2c066eb36eae5d2904e727f096dbe36258710235b99391f7fde8bb169b0
SHA512

e3250dba2438be0321590a33556e7374d9589c2a54d6d03c1427381adbff09b239ff1c84385175fe3396b37fc00817f487d2e64dfb9379190b344ac0dce1e4e9
SSDEEP

768:MeDqNDGlyOVolWJKx9P2VC/v2b2L3vh8zBqtc1Ooxwo6dUOdQByD0n7zI2Z5yox+:bDqwD79ngtKLLkW0sGk/Ylum

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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	wscript.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\JaffaCakes118_64efc2c066eb36eae5d2904e727f096dbe36258710235b99391f7fde8bb169b0.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\JaffaCakes118_64efc2c066eb36eae5d2904e727f096dbe36258710235b99391f7fde8bb169b0.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-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\B7NA4KUBDY = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\JaffaCakes118_64efc2c066eb36eae5d2904e727f096dbe36258710235b99391f7fde8bb169b0.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.

Scheduled Task

pid	Process
3912	schtasks.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 2204 wrote to memory of 3912	2204	wscript.exe	84
PID 2204 wrote to memory of 3912	2204	wscript.exe	84

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\JaffaCakes118_64efc2c066eb36eae5d2904e727f096dbe36258710235b99391f7fde8bb169b0.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:2204
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_64efc2c066eb36eae5d2904e727f096dbe36258710235b99391f7fde8bb169b0.js
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:3912