Discovery / credits: Malvuln - (c) 2021  
Original source:  
Threat: Trojan.Win32.Agent.xdtv  
Vulnerability: Insecure Permissions  
Description: The malware creates an insecure installation dir under "C:\Program Files (x86)" and grants full (F) permissions to the Everyone 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: ffa9b76f9549a2c46415c855a0911e8a  
Vuln ID: MVID-2021-0198  
Disclosure: 05/04/2021  
C:\>cacls "C:\Program Files (x86)\Cannonnt"  
C:\Program Files (x86)\Cannonnt Everyone:(OI)(CI)F  
C:\>cd "\Program Files (x86)\Cannonnt"  
C:\Program Files (x86)\Cannonnt>dir  
Volume in drive C has no label.  
Directory of C:\Program Files (x86)\Cannonnt  
05/10/2012 05:04 PM 53,248 messenger.exe  
05/10/2012 05:04 PM 122,880 rdbms.exe  
05/10/2012 05:04 PM 196,608 RDS.exe  
05/10/2012 05:04 PM 233,472 windns.exe  
4 File(s) 606,208 bytes  
Disclaimer: The information contained within this advisory is supplied "as-is" with no warranties or guarantees of fitness of use or otherwise. Permission is hereby granted for the redistribution of this advisory, provided that it is not altered except by reformatting it, and that due credit is given. Permission is explicitly given for insertion in vulnerability databases and similar, provided that due credit is given to the author. The author is not responsible for any misuse of the information contained herein and accepts no responsibility for any damage caused by the use or misuse of this information. The author prohibits any malicious use of security related information or exploits by the author or elsewhere. Do not attempt to download Malware samples. The author of this website takes no responsibility for any kind of damages occurring from improper Malware handling or the downloading of ANY Malware mentioned on this website or elsewhere. All content Copyright (c) (TM).