The RCServ is a backdoor - hacker's remote access tool. The backdoor consists of a server and of a client part. The server part should be installed on some computer so that a hacker could access it using a client part. The server part provides a hacker with information about an infected system, user actions and it also allows him to get a limited access to data on an infected computer. The RCServ backdoor server allows multiple connections, so several hackers can use the same server at the same time.
Depending on the settings of your F-Secure security product, it will either automatically delete, quarantine or rename the suspect file, or ask you for a desired action.
More scanning & removal options
More information on the scanning and removal options available in your F-Secure product can be found in the Help Center.
You may also refer to the Knowledge Base on the F-Secure Community site for more information.
The following information can be obtained using RCServ backdoor:
1. Basic system information and network configuration 2. Network passwords (for shares) 3. All keyboard activities (keylogger DLL is dropped by the backdoor) 4. Screenshot of desktop window (realtime mode also possible) 5. Backdoor sessions info (to see other sessions of the server) 6. Active processes list 7. Log of backdoor server usage 8. Backdoor server configuration settings
Other features include:
1. FTP server control 2. File manager 3. Upgradeing of server component 4. Downloading files from the WEB 5. NetBios scanner 6. UDP flooding 7. Service manager 8. Keylogging 9. Network pinging 10. Network port scanning 11. Playing tricks (swapping mouse buttons, killing windows, running screensaver, etc.) 12. Proxy control
All files detected as Backdoor.RCServ should be deleted from an infected system. If some files are locked while Windows is active, they should be deleted from pure DOS (in case of Windows 9x system) or renamed with a different extensions (.EXA for example) with further system restart (in case of NT-based system).
Technical Details: Alexey Podrezov; F-Secure Corp.; May 13th 2002