Trojan-Spy.Win32.Stealer.osh Insecure Permissions

`Discovery / credits: Malvuln - malvuln.com (c) 2021  
Original source: https://malvuln.com/advisory/d58b1c2f540268bd9dd920455568d45f.txt  
Contact: [email protected]  
Media: twitter.com/malvuln  
  
Threat: Trojan-Spy.Win32.Stealer.osh  
Vulnerability: Insecure Permissions  
Description: The malware creates an insecure dir named "DESKTOP-2C3IQHO" under c:\ drive and grants 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: d58b1c2f540268bd9dd920455568d45f  
Vuln ID: MVID-2021-0117  
Dropped files: ApiSetHost.AppExecutionAlias.exe  
Disclosure: 03/1/2021  
  
Exploit/PoC:  
C:\>cacls \DESKTOP-2C3IQHO\scp  
C:\DESKTOP-2C3IQHO\scp 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 \DESKTOP-2C3IQHO\scp  
Volume in drive C has no label.  
  
Directory of C:\DESKTOP-2C3IQHO\scp  
  
02/23/2021 07:41 PM 1,238,020 ApiSetHost.AppExecutionAlias.exe  
1 File(s) 1,238,020 bytes  
  
  
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