Discovery / credits: Malvuln - malvuln.com (c) 2021
Original source: https://malvuln.com/advisory/6a3329d12323f4920dbf13afe1be6acd.txt
Vulnerability: Insecure Permissions
Description: Banka.a creates an insecure dir named "Anak Bangka Hidden Folders" under c:\ drive and grants change (C) permissions to the authenticated user group. The virus also drops two files named "Bangka Island.jpg" and "Pulau Bangka.jpg" under c:\ which are actually executables. Standard users can replace the "Pasir Padi.pif" shortcut created 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.
Vuln ID: MVID-2021-0184
Dropped files: "Pasir Padi.pif", "Bangka Island.jpg", "Pulau Bangka.jpg"
C:\>type "\Anak Bangka Hidden Folders\Pasir Padi.pif"
MZÃ‰ Â Â â•• @ Ã‡ â•‘ â”¤ â•!â••Lâ•!This program cannot be run in DOS mode.
C:\>cacls "\Anak Bangka Hidden Folders\Pasir Padi.pif"
C:\Anak Bangka Hidden Folders\Pasir Padi.pif BUILTIN\Administrators:(ID)F
NT AUTHORITY\Authenticated Users:(ID)C
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