Tuesday, September 28, 2021

Backdoor.Win32.Agent.aer Insecure Transit / Password Disclosure

Discovery / credits: Malvuln - malvuln.com (c) 2021
Original source: https://malvuln.com/advisory/9576a6a59715a69be499fa41d6383a64_B.txt
Contact: [email protected]
Media: twitter.com/malvuln

Threat: Backdoor.Win32.Agent.aer
Vulnerability: Insecure Transit Password Disclosure
Description: The malware listens on TCP port 1080 and passes logon credentials in plaintext via a URL query string using the HTTP GET request method.
Third party attackers who can sniff traffic or access the machine used to logon may also locate the credentials, as the URL contents can potentially be leaked or stored in some of the following locations.

Browser History
Browser Cache
Browser Developer Tools
Cached by web proxy
Referer Header
Web Logs
Shared Systems

Type: PE32
MD5: 9576a6a59715a69be499fa41d6383a64
Vuln ID: MVID-2021-0347
Dropped files: svchost.exe
Disclosure: 09/25/2021

Exploit/PoC:
Plaintext password passed in URL using GET method
http://x.x.x.x:1080/login?Nombre=admin&Password=abc123


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