Vulnerabilities

VulturiBuilder Insecure Permissions

Discovery / credits: Malvuln - malvuln.com (c) 2022
Original source: https://malvuln.com/advisory/ca294b2f778abc14fef6313b3cea7155.txt
Contact: malvuln13@gmail.com
Media: twitter.co Discovery / credits: Malvuln - malvuln.com (c) 2022
Original source: https://malvuln.com/advisory/ca294b2f778abc14fef6313b3cea7155.txt
Contact: malvuln13@gmail.com
Media: twitter.com/malvuln

Threat: VulturiBuilder
Vulnerability: Insecure Permissions
Description: The malware writes an .EXE with insecure permissions under c: drive granting change (C) permissions to the authenticated user group. Standard users can rename the executable 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: ca294b2f778abc14fef6313b3cea7155
Vuln ID: MVID-2022-0457
Disclosure: 01/19/2022


Exploit/PoC:
C:>cacls hate.exe
C:hate.exe BUILTINAdministrators:(ID)F
NT AUTHORITYSYSTEM:(ID)F
BUILTINUsers:(ID)R
NT AUTHORITYAuthenticated Users:(ID)C


C:>dir hate.exe
Volume in drive C has no label.

Directory of C:

01/11/2022 07:25 PM 298,496 hate.exe
1 File(s) 298,496 bytes
0 Dir(s) 27,531,624,448 bytes free


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