Trojan.Win32.Comei.pgo / Insecure Permissions EoP

[malvuln <malvuln13 () gmail com>]

Discovery / credits: Malvuln - malvuln.com (c) 2021
Original source:
https://malvuln.com/advisory/7cb253cf47b6de8adfea559e51950c17.txt
Contact: malvuln13 () gmail com
Media: twitter.com/malvuln

Threat: Trojan.Win32.Comei.pgo
Vulnerability: Insecure Permissions EoP
Description: Trojan malware creates an vulnerable dir named "dir"
under c:\ drive granting change (C) permissions to the authenticated
users group.
Type: PE32
MD5: 7cb253cf47b6de8adfea559e51950c17
Vuln ID: MVID-2021-0068
Dropped files: Lsas.exe
Disclosure: 02/06/2021

Exploit/PoC:
C:\>cacls \dir
C:\dir 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


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