Discovery / credits: Malvuln - malvuln.com (c) 2022
Original source: https://malvuln.com/advisory/c44a9580e17bad0aa27329e51b7d0ae0.txt
Contact: malvuln13@gmail.com
Media: twitter.com/malvuln

Threat: Virus.Win32.Qvod.b
Vulnerability: Insecure Permissions 
Description: The malware writes a PE file with insecure permissions to 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.
Family: Qvod
Type: PE32
MD5: c44a9580e17bad0aa27329e51b7d0ae0
Vuln ID: MVID-2022-0565
Dropped files: 53ce6641.exe 
Disclosure: 04/26/2022

Exploit/PoC:
C:\>cacls 53ce6641.exe
C:\53ce6641.exe BUILTIN\Administrators:(ID)F
                NT AUTHORITY\SYSTEM:(ID)F
                BUILTIN\Users:(ID)R
                NT AUTHORITY\Authenticated Users:(ID)C

C:\>dir 53ce6641.exe
 Volume in drive C has no label.

 Directory of C:\

04/02/2022  12:42 AM            89,392 53ce6641.exe
               1 File(s)         89,392 bytes


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