Backdoor.Win32.DarkKomet.apcc Insecure Permissions

`Discovery / credits: Malvuln - malvuln.com (c) 2021  
Original source: https://malvuln.com/advisory/8c82de32ab2b407451b9fc054c09f717.txt  
Contact: [email protected]  
Media: twitter.com/malvuln  
  
Threat: Backdoor.Win32.DarkKomet.apcc  
Vulnerability: Insecure Permissions  
Description: DarkKomet.apcc creates an insecure directory under c:\ drive granting change (C) permissions to the authenticated user group and drops an EXE named "msdcsc.exe" in that dir.  
Type: PE32  
MD5: 8c82de32ab2b407451b9fc054c09f717  
Vuln ID: MVID-2021-0098  
Dropped files: msdcsc.exe  
Disclosure: 02/18/2021  
  
  
Exploit/PoC:  
C:\>cacls \MSDCSC  
C:\MSDCSC 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 \MSDCSC  
Volume in drive C has no label.  
  
Directory of C:\MSDCSC  
..  
06/16/2012 12:27 PM 1,097,728 msdcsc.exe  
1 File(s) 1,097,728 bytes  
2 Dir(s) 48,289,648,640 bytes free  
  
  
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