VIRUS.WIN32.BANKA.A / Insecure Permissions

2021.04.25
us malvuln (US) us
Risk: Medium
Local: Yes
Remote: No
CVE: N/A
CWE: N/A

Discovery / credits: Malvuln - malvuln.com (c) 2021 Original source: https://malvuln.com/advisory/6a3329d12323f4920dbf13afe1be6acd.txt Contact: malvuln13@gmail.com Media: twitter.com/malvuln Threat: Virus.Win32.Banka.a 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. Type: PE32 MD5: 6a3329d12323f4920dbf13afe1be6acd Vuln ID: MVID-2021-0184 Dropped files: "Pasir Padi.pif", "Bangka Island.jpg", "Pulau Bangka.jpg" Disclosure: 04/23/2021 Exploit/PoC: C:\>type "\Anak Bangka Hidden Folders\Pasir Padi.pif" MZÉ     ╕ @ Ç ║ ┤ ═!╕L═!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\SYSTEM:(ID)F BUILTIN\Users:(ID)R NT AUTHORITY\Authenticated Users:(ID)C 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).


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