vjw0rm | 5d7a0823b291315c81e35ed0c7ca7c81c6595c7ca9e5ebf0f56993a02d77c1f2

Analysis

max time kernel
144s
max time network
148s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
06-01-2025 20:38

Target

JaffaCakes118_395f205e2eb958f80f72f13cff9303e2.js
Size

10KB
MD5

395f205e2eb958f80f72f13cff9303e2
SHA1

d7929d3bc0326abaa776d55b74150c42790634b9
SHA256

5d7a0823b291315c81e35ed0c7ca7c81c6595c7ca9e5ebf0f56993a02d77c1f2
SHA512

5e35600f9b4789ff0869d0d28898421121b25eb409646c1fc6794ebcf59c6d9adf742ccb266ef7d9ddf420743995236bc8a1d42a8a06dd90d5fb865662007e7e
SSDEEP

192:Nv7au56Eore0U4PpvsCq54jCPkEOnxyP+Qnzac7P8kdC0lTkmtteFE:N+u5xJsPpvbFRXnAWQn+30NLaFE

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_395f205e2eb958f80f72f13cff9303e2.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\JaffaCakes118_395f205e2eb958f80f72f13cff9303e2.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-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Run\F4ZGVI2L3S = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\JaffaCakes118_395f205e2eb958f80f72f13cff9303e2.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
560	schtasks.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2552 wrote to memory of 560	2552	wscript.exe	31
PID 2552 wrote to memory of 560	2552	wscript.exe	31
PID 2552 wrote to memory of 560	2552	wscript.exe	31

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_395f205e2eb958f80f72f13cff9303e2.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\Local\Temp\JaffaCakes118_395f205e2eb958f80f72f13cff9303e2.js
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:560