Backdoor.Win32.Buterat.cxq / Insecure Permissions EoP

us malvuln (US) us
Risk: High
Local: Yes
Remote: No

Discovery / credits: Malvuln - (c) 2021 Original source: Contact: Media: Threat: Backdoor.Win32.Buterat.cxq Vulnerability: Insecure Permissions EoP Description: This malware creates an insecure dir under c:\ drive named "process", where it drops a random named executable and later moves it to C:\Users\[VICTIM]\AppData\Local\Temp where it sends SYN packets to TCP port 3000. The process dir grants change (C) permissions to the authenticated users group. Type: PE32 MD5: 8bfac1f52a94f36b711e20bce30161cc Vuln ID: MVID-2021-0063 Dropped files: Disclosure: 02/01/2021 Exploit/PoC: C:\Users\[VICTIM]\Desktop>cacls \process C:\process 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 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).

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