vjw0rm | bbceba6fd06b01bd5c69ccab1ea106189455e1e85e577e278f9f362940b5442c

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
04-04-2024 07:41

Target

b2931677748da184be75854369749dc9_JaffaCakes118.js
Size

11KB
MD5

b2931677748da184be75854369749dc9
SHA1

1dd339c87a703195ed29ab84792e30611a9917e6
SHA256

bbceba6fd06b01bd5c69ccab1ea106189455e1e85e577e278f9f362940b5442c
SHA512

0c8399e08da2194700ac5d2729b35abcb4c2642a4825ba46968ee1c8c21071f68c21b99297638d543440e3bf854cfc17d0ec390716a2fb2bcd9961611bd3c894
SSDEEP

192:lGOZvPPzzDhmu9bQx/vdfEXcWBAQcpdOAqER/VkB1UxYSeXVW1EU:BZlmu9cx/VErBxqdOAxa2aSREU

Score

10^/10

Vjw0rm
Vjw0rm is a remote access trojan written in JavaScript.
trojan worm 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-1-5-21-275798769-4264537674-1142822080-1000\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\b2931677748da184be75854369749dc9_JaffaCakes118.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\b2931677748da184be75854369749dc9_JaffaCakes118.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-1-5-21-275798769-4264537674-1142822080-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\6ID7YY2BDP = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\b2931677748da184be75854369749dc9_JaffaCakes118.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
388	schtasks.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 4500 wrote to memory of 388	4500	wscript.exe	90
PID 4500 wrote to memory of 388	4500	wscript.exe	90

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\b2931677748da184be75854369749dc9_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:4500
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\b2931677748da184be75854369749dc9_JaffaCakes118.js
  2⤵
  - Creates scheduled task(s)
  PID:388