Discovery / credits: Malvuln - malvuln.com (c) 2021
Original source: https://malvuln.com/advisory/d9822984ed546cbf3ccffd149d1d2af5.txt
Contact: malvuln13@gmail.com
Media: twitter.com/malvuln

Threat: Backdoor.Win32.Netbus.12
Vulnerability: Unauthenticated Information Disclosure
Description: The malware listens on TCP ports 12345, 12346. Unauthenticated third-party attackers who can reach infected system can grab screen captures by simply connecting to port 12346. Once connected it will dump a screen capture, using Windows command line redirection operator ">" we can save the output locally. Opening the dumped output in text-file format we find the header "JFIF" for JPEG file format. Therefore, using the .jpeg file extension when saving the output will allow you to view the victims machine by opening the image.
Type: PE32
MD5: d9822984ed546cbf3ccffd149d1d2af5
Vuln ID: MVID-2021-0230
Dropped files: 
Disclosure: 05/28/2021

Exploit/PoC:
nc64.exe x.x.x.x 12346 > screendump.jpeg

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