Discovery / credits: Malvuln - (c) 2022  
Original source:  
Threat: Trojan-Downloader.Win32.Agent  
Vulnerability: Insecure Permissions  
Description: The malware writes a PE file to the "Windows\System" directory granting 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.  
Family: Agent  
Type: PE32  
MD5: fb3ac3c9d808de7f4b5ede68715f658f  
Vuln ID: MVID-2022-0570  
Dropped files: alg.exe  
Disclosure: 04/26/2022   
C:\>cacls \Windows\System\alg.exe  
C:\Windows\System\alg.exe BUILTIN\Administrators:(ID)F  
NT AUTHORITY\Authenticated Users:(ID)C  
C:\>dir \Windows\System\alg.exe  
Volume in drive C has no label.  
Directory of C:\Windows\System  
04/10/2022 01:18 AM 882,688 alg.exe  
1 File(s) 882,688 bytes  
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