Discovery / credits: Malvuln - malvuln.com (c) 2022 Original source: https://malvuln.com/advisory/fa00524d7289cdba327d5c34ab3d9bd7.txt Contact: malvuln13@gmail.com Media: twitter.com/malvuln Threat: Backdoor.Win32.GF.j Vulnerability: Unauthenticated Remote Command Execution Description: The malware listens on TCP port 21554. Third-party adversaries who can reach infected hosts can run commands made available by the backdoor. Eg. commands setport (change port) RESETALL (resets to default port) KillHER (terminates backdoor) Family: GF Type: PE32 MD5: fa00524d7289cdba327d5c34ab3d9bd7 Vuln ID: MVID-2022-0566 Dropped files: Windll.exe Disclosure: 04/26/2022 Exploit/PoC: C:\>nc64.exe x.x.x.x 21554 setport 666 New port: 666 KillHER Disclaimer: The information contained within this advisory is supplied "as-is" with no warranties or guarantees of fitness of use or otherwise. Permission is hereby granted for the redistribution of this advisory, provided that it is not altered except by reformatting it, and that due credit is given. Permission is explicitly given for insertion in vulnerability databases and similar, provided that due credit is given to the author. The author is not responsible for any misuse of the information contained herein and accepts no responsibility for any damage caused by the use or misuse of this information. The author prohibits any malicious use of security related information or exploits by the author or elsewhere. Do not attempt to download Malware samples. The author of this website takes no responsibility for any kind of damages occurring from improper Malware handling or the downloading of ANY Malware mentioned on this website or elsewhere. All content Copyright (c) Malvuln.com (TM).