Trojan-Dropper.Win32.Agent.wxl Insecure Permissions

`Discovery / credits: Malvuln - malvuln.com (c) 2021  
Original source: https://malvuln.com/advisory/8b17a68d7b2291f217b63e0377ee2b3a.txt  
Contact: [email protected]  
Media: twitter.com/malvuln  
  
Threat: Trojan-Dropper.Win32.Agent.wxl  
Vulnerability: Insecure Permissions  
Description: The malware creates a dir with insecure permissions under c:\ drive and grants 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: 8b17a68d7b2291f217b63e0377ee2b3a  
Vuln ID: MVID-2021-0273  
Dropped files: 1.bat, 1.dll  
Disclosure: 07/03/2021  
  
Exploit/PoC:  
C:\>cacls AntivirAsistant  
C:\AntivirAsistant 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  
  
  
C:\>dir AntivirAsistant  
Volume in drive C has no label.  
  
Directory of C:\AntivirAsistant  
  
06/27/2021 02:57 AM 38 1.bat  
06/27/2021 02:57 AM 194,560 1.dll  
2 File(s) 194,598 bytes  
  
  
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