Discovery / credits: Malvuln - malvuln.com (c) 2022 Original source: https://malvuln.com/advisory/204613443e555f73237ea43a2faecaa5.txt Contact: malvuln13@gmail.com Media: twitter.com/malvuln Threat: Backdoor.Win32.Wollf.16 Vulnerability: Authentication Bypass Description: The malware listens on TCP port 1015 and has an FTPD feature that when enabled listens on TCP port 21. Third-party attackers who can reach an infected system can logon using any username/password combination. Type: PE32 MD5: 204613443e555f73237ea43a2faecaa5 Vuln ID: MVID-2022-0462 Dropped files: ddradmin.exe Disclosure: 01/20/2022 Exploit/PoC: nc64.exe x.x.x.x 21 220 Welcome to X-Ftp server ... USER malvuln 331 User name okay, need password. PASS malvuln 230 User logged in, proceed. 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).