BACKDOOR.WIN32.REMOTEMANIPULATOR / Insecure Permissions EoP

2021.01.04
us malvuln (US) us
Risk: High
Local: Yes
Remote: Yes
CVE: N/A
CWE: N/A

Discovery / credits: malvuln - Malvuln.com (c) 2021 Original source: http://malvuln.com/advisory/82183b3d85311a39fb80ae07357594e5.txt Contact: malvuln13@gmail.com Media: twitter.com/malvuln Threat: BACKDOOR.WIN32.REMOTEMANIPULATOR Vulnerability: Insecure Permissions Description: Creates a dir Folder139 with insecure permissions as it hands authenticated users change permissions (C). The backdoor drops an EXE named audiohd.exe which is not visible unless viewing using dir /a command. There we find the exeuctable audiohd.exe and another hidden DLL vp8encoder.dll Type: PE32 MD5: 82183b3d85311a39fb80ae07357594e5 Vuln ID: MVID-2021-0005 Dropped files: audiohd.exe, vp8encoder.dll Disclosure: 01/01/2021 [+] Download advisory Exploit/PoC: C:\>cacls C:\Folder139 C:\Folder139 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 C:\Folder139>dir /a 02/15/2017 09:51 AM 1,486,848 audiohd.exe 07/15/2015 08:19 PM 607,440 vp8encoder.dll 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 occuring 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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