Trojan.Win32.Hosts2.yqf Insecure Permissions

2021-04-08T00:00:00
ID PACKETSTORM:162125
Type packetstorm
Reporter malvuln
Modified 2021-04-08T00:00:00

Description

                                        
                                            `Discovery / credits: Malvuln - malvuln.com (c) 2021  
Original source: https://malvuln.com/advisory/274a6e846c5a4a2b3281198556e5568b.txt  
Contact: malvuln13@gmail.com  
Media: twitter.com/malvuln  
  
Threat: Trojan.Win32.Hosts2.yqf  
Vulnerability: Insecure Permissions  
Description: Hosts2.yqf creates an insecure dir named "mlekaocYUmaae" under c:\ drive and grants change (C) permissions to the authenticated user group. Standard users can rename the executables 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: 274a6e846c5a4a2b3281198556e5568b  
Vuln ID: MVID-2021-0162  
Dropped files: HielDjixmHUfdeewc.exe  
Disclosure: 04/07/2021  
  
Exploit/PoC:   
C:\>cacls \mlekaocYUmaae  
C:\mlekaocYUmaae 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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