Discovery / credits: Malvuln - malvuln.com (c) 2021 Original source: https://malvuln.com/advisory/6b2a9304d1c7a63365db0f9fd12d39b0.txt Contact: malvuln13@gmail.com Media: twitter.com/malvuln Threat: Backdoor.Win32.Zxman Vulnerability: Missing Authentication Description: Backdoor.Win32.Zxman by Zx-man listens on TCP port 2048 for commands. However, anyone who can reach the infected host can take control as there is no authentication in place. Not much of a self-respecting backdoor. Third party intruders or incident responders who logon will be greeted with a welcome screen and help menu allowing for a wide-range of commands. Welcome to REMOTE_CONTROL_SYSTEM by Zx-man (zx-man@ukr.net) Commands List: etc.. Type: PE32 MD5: 6b2a9304d1c7a63365db0f9fd12d39b0 Vuln ID: MVID-2021-0041 Disclosure: 01/20/2021 Exploit/PoC: TELNET x.x.x.x 2048 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).