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Trojan.Win32.Pasta.mca MVID-2021-0383 Insecure Permissions

Trojan.Win32.Pasta.mca MVID-2021-0383 Insecure Permissions
Posted Nov 1, 2021
Authored by malvuln | Site malvuln.com

Trojan.Win32.Pasta.mca malware suffers from an insecure permissions vulnerability.

tags | exploit, trojan
systems | windows
SHA-256 | aebdff6af5c55ad3ae50eb8e28e084df2cf2a6cfaf702e08a0d93e879dfec6ac

Trojan.Win32.Pasta.mca MVID-2021-0383 Insecure Permissions

Change Mirror Download
Discovery / credits: Malvuln - malvuln.com (c) 2021
Original source: https://malvuln.com/advisory/4692b129b0034fd53cd76867d9869e49.txt
Contact: malvuln13@gmail.com
Media: twitter.com/malvuln

Threat: Trojan.Win32.Pasta.mca
Vulnerability: Insecure Permissions
Description: The malware writes an .DLL file with insecure permissions under c:\ drive granting change (C) permissions to the authenticated user group. Standard users can rename the executable dropped by the malware to disable it or replace it with their own executable. Then wait for a privileged user to logon to the infected machine to potentially escalate privileges.
Type: PE32
MD5: 4692b129b0034fd53cd76867d9869e49
Vuln ID: MVID-2021-0383
Dropped files: Hook.dll
Disclosure: 11/01/2021


Exploit/PoC:
C:\>cacls Hook.dll
C:\Hook.dll BUILTIN\Administrators:(ID)F
NT AUTHORITY\SYSTEM:(ID)F
BUILTIN\Users:(ID)R
NT AUTHORITY\Authenticated Users:(ID)C


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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