full-disclosure - [FD] Backdoor.Win32.LolBot.gen / Insecure Permissions

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Date: Tue, 5 Oct 2021 19:56:19 -0400
From: malvuln <malvuln13@...il.com>
To: fulldisclosure@...lists.org
Subject: [FD] Backdoor.Win32.LolBot.gen / Insecure Permissions

Discovery / credits: Malvuln - malvuln.com (c) 2021
Original source:
https://malvuln.com/advisory/56a93a2a0a4c6a09e2761f2e0351b020.txt
Contact: malvuln13@...il.com
Media: twitter.com/malvuln

Threat: Backdoor.Win32.LolBot.gen
Vulnerability: Insecure Permissions
Description: The malware creates an executable 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: 56a93a2a0a4c6a09e2761f2e0351b020
Vuln ID: MVID-2021-0353
Dropped files: "New Folder .exe"
Disclosure: 10/04/2021

Exploit/PoC:
C:\>cacls "New Folder .exe"
C:\New Folder .exe BUILTIN\Administrators:(ID)F
                   NT AUTHORITY\SYSTEM:(ID)F
                   BUILTIN\Users:(ID)R
                   NT AUTHORITY\Authenticated Users:(ID)C

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credit is given to the author. The author is not responsible for any
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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
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Malware handling or the downloading of ANY Malware mentioned on this
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