Trojan.Win32.Hotkeychick.am Insecure Permissions

`Discovery / credits: Malvuln - malvuln.com (c) 2021  
Original source: https://malvuln.com/advisory/5ea9840970e78188f73eb1763363eeac.txt  
Contact: [email protected]  
Media: twitter.com/malvuln  
  
Threat: Trojan.Win32.Hotkeychick.am  
Vulnerability: Insecure Permissions   
Description: The trojan creates an insecure dir named "Korektor_MPiPS-01" under c:\ drive, granting change (C) permissions to the authenticated user group. Standard users can rename the malware and reboot to disable it or replace with their own executable to escalate privileges when a privileged user logs on to the infected machine.  
Type: PE32  
MD5: 5ea9840970e78188f73eb1763363eeac  
Vuln ID: MVID-2021-0114  
Disclosure: 02/25/2015  
  
Exploit/PoC:  
C:\>cacls \Korektor_MPiPS-01  
C:\Korektor_MPiPS-01 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 Korektor_MPiPS-01  
Volume in drive C has no label.  
  
Directory of C:\Korektor_MPiPS-01  
  
02/25/2021 10:46 PM <DIR> .  
02/25/2021 10:46 PM <DIR> ..  
03/05/2019 12:09 PM 1,096,704 Asystent.exe  
02/25/2021 10:46 PM 56 Asystent.ini  
02/25/2021 10:46 PM <DIR> DBF  
03/05/2019 12:07 PM 2,568 korektor_mpips-01.txt  
10/29/2015 06:00 AM 55 korektor_mpips-01.URL  
03/05/2019 12:09 PM 818,688 Statystyka MPiPS-01.xls  
5 File(s) 1,918,071 bytes  
3 Dir(s) 50,556,514,304 bytes free  
  
  
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