Discovery / credits: Malvuln - (c) 2021  
Original source:  
Threat: HEUR.Backdoor.Win32.Agent.gen  
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: db0b3f4aeccb8d26f14b915a9e2529b4  
Vuln ID: MVID-2021-0282  
Dropped files: xm86.exe  
Disclosure: 07/12/2021  
Volume in drive C has no label.  
Directory of C:\Chrome\XMR2  
03/18/2018 03:26 AM 1,731,080 xm86.exe  
1 File(s) 1,731,080 bytes  
C:\Chrome\XMR2>cacls \Chrome  
C:\Chrome BUILTIN\Administrators:(OI)(CI)(ID)F  
NT AUTHORITY\Authenticated Users:(ID)C  
NT AUTHORITY\Authenticated Users:(OI)(CI)(IO)(ID)C  
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