Discovery / credits: Malvuln - malvuln.com (c) 2021 Original source: https://malvuln.com/advisory/34fb086a88f3a2506b61a17cced3b476.txt Contact: malvuln13@gmail.com Media: twitter.com/malvuln Threat: Trojan.Win32.Phires.zm Vulnerability: Insecure Permissions Description: The malware creates an dir with insecure permissions containing a registry file with a ".desc" extension, under c:\ drive granting change (C) permissions to the authenticated user group. Standard users can rename the file dropped by the malware to disable it or replace it with their own. Then wait for a privileged user to logon to the infected machine to potentially escalate privileges. Type: PE32 MD5: 34fb086a88f3a2506b61a17cced3b476 Vuln ID: MVID-2021-0384 Dropped files: info.desc Disclosure: 11/01/2021 Exploit/PoC: C:\> cacls Adobes C:\Adobes 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 Adobes Volume in drive C has no label. Directory of C:\Adobes 09/28/2010 03:29 PM 280 info.desc 1 File(s) 280 bytes Windows Registry Editor Version 5.00 [HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main] "Start Page"="http://www.hae123.com" 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) Malvuln.com (TM).