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"


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