Backdoor.Win32.Acropolis.10 Insecure Permissions

`Discovery / credits: Malvuln - malvuln.com (c) 2022  
Original source: https://malvuln.com/advisory/c3e2bbe5dca96687422f2b4e8c80f4ce.txt  
Contact: [email protected]  
Media: twitter.com/malvuln  
  
Threat: Backdoor.Win32.Acropolis.10  
Vulnerability: Insecure Permissions  
Description: The malware writes a PE 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: c3e2bbe5dca96687422f2b4e8c80f4ce  
Vuln ID: MVID-2022-0497  
Disclosure: 02/22/2022  
  
Exploit/PoC:  
C:\>cacls Mainserver.exe  
C:\Mainserver.exe BUILTIN\Administrators:(ID)F  
NT AUTHORITY\SYSTEM:(ID)F  
BUILTIN\Users:(ID)R  
NT AUTHORITY\Authenticated Users:(ID)C  
  
  
C:\>dir Mainserver.exe  
Volume in drive C has no label.  
  
Directory of C:\  
  
02/22/2022 10:11 PM 385,024 Mainserver.exe  
1 File(s) 385,024 bytes  
0 Dir(s) 24,994,226,176 bytes free  
  
  
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