full-disclosure - [FD] Backdoor.Win32.BluanWeb / Unauthenticated Remote Code Execution

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Message-ID: <CAAHK0WT-u7dFVx7+f=DW+8yesE7nd12tS0r8u7JMA7oGUDjuxg@mail.gmail.com>
Date: Thu, 3 Mar 2022 20:57:59 -0500
From: malvuln <malvuln13@...il.com>
To: fulldisclosure@...lists.org
Subject: [FD] Backdoor.Win32.BluanWeb / Unauthenticated Remote Code Execution

Discovery / credits: Malvuln - malvuln.com (c) 2022
Original source:
https://malvuln.com/advisory/30903ccbc6747c0da5a2775884b78def.txt
Contact: malvuln13@...il.com
Media: twitter.com/malvuln

Threat: Backdoor.Win32.BluanWeb
Vulnerability: Unauthenticated Remote Code Execution
Description: The malware "BlueAngel For WebServer" by "leonshoh" listens on
TCP port 80. The malware provides an HTML web-interface that exposes the
entire system and creates HTML links to delete or run programs.

E.g.

[$Recycle.Bin]
[Boot]
bootmgr   [删除]  [运行]
BOOTNXT   [删除]  [运行]
BOOTSECT.BAK   [删除]  [运行]
[Documents and Settings]
[dump]
pagefile.sys   [删除]  [运行]
[PerfLogs]
[Program Files]
[Program Files (x86)]
[ProgramData]
[Recovery]
swapfile.sys   [删除]  [运行]
[System Volume Information]
[Users]
[Windows]

Translated from Chinese:

bootmgr [delete] [run]
BOOTNXT [delete] [run]
BOOTSECT.BAK [delete] [run]
[Documents and Settings]
[dump]
pagefile.sys [delete] [run]
[PerfLogs]
[Program Files]
[Program Files (x86)]
[ProgramData]
[Recovery]
swapfile.sys [delete] [run]

The HREF is like "run_EXECUTABLE". Third-party attackers who can reach
infected hosts can make HTTP GET request appending any executable name.

Family:BluanWeb
Type: PE32
MD5: 30903ccbc6747c0da5a2775884b78def
Vuln ID: MVID-2022-0504
Disclosure: 03/03/2022

Exploit/PoC:
curl http://x.x.x.x/run_3rd_party_malware

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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