vjw0rm | 64efc2c066eb36eae5d2904e727f096dbe36258710235b99391f7fde8bb169b0

Analysis

max time kernel
141s
max time network
145s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-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

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-1-5-21-1488793075-819845221-1497111674-1000\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
2572	schtasks.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1624 wrote to memory of 2572	1624	wscript.exe	30
PID 1624 wrote to memory of 2572	1624	wscript.exe	30
PID 1624 wrote to memory of 2572	1624	wscript.exe	30

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
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1624
- 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:2572