Trojan.Win32.Cospet.abg Insecure Permissions

`Discovery / credits: Malvuln - malvuln.com (c) 2021  
Original source: https://malvuln.com/advisory/5f5b308853b9aa9243390c135ff6ba1b.txt  
Contact: [email protected]  
Media: twitter.com/malvuln  
  
Threat: Trojan.Win32.Cospet.abg  
Vulnerability: Insecure Permissions EoP   
Description: Cospet.abg, creates an vulnerable dir named "dir" under c:\ drive granting change (C) permissions to the authenticated users group. Sends SYN packet to TCP port 2185.  
Type: PE32  
MD5: 5f5b308853b9aa9243390c135ff6ba1b  
Vuln ID: MVID-2021-0069  
Dropped files: Lsas.exe  
Disclosure: 02/06/2021   
  
Exploit/PoC:  
C:\>cacls \dir  
C:\dir BUILTIN\Administrators:(OI)(CI)(ID)F  
NT AUTHORITY\SYSTEM:(OI)(CI)(ID)F  
BUILTIN\Users:(OI)(CI)(ID)R  
NT AUTHORITY\Authenticated Users:(ID)C  
NT AUTHORITY\Authenticated Users:(OI)(CI)(IO)(ID)C  
  
  
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