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Category: Malware

Type: Backdoor

Aliases: Wootbot.AL, MYSQL Exploit, Backdoor.Win32.Wootbot.al, Backdoor.Wootbot.gen, Backdoor.Win32.Wootbot.gen


Wootbot represents the growing family of backdoors - hacker's remote access tools. These tools allow to contol victims' computers remotely by sending specific commands to them. Also these backdoors can steal data and spread to computers vulnerable to exploits. In addition Wootbot is capable of working as a proxy and can use strong encryption of its connections. This variant of Wootbot contains the new MYSQL exploit.


Automatic action

Once detected, the F-Secure security product will automatically handle a harmful program or file by either deleting or renaming it.

Network Disinfection

For general instructions on disinfecting a local network infection, please see Eliminating A Local Network Outbreak.

Manual Disinfection

CAUTION Manual disinfection is a risky process; it is recommended only for advanced users.

Manual disinfection for Wootbot backdoor requires renaming of an infected file, usually located in Windows or Windows System folder and restarting a system. Please note that the backdoor's file may have read-only, system and hidden attributes, so Windows Explorer has to be configured to show such files.

Knowledge Base

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About the product

See the manual for your F-Secure product on the Help Center.

Contact Support

Chat with or call an expert for help.

Submit a sample

Submit a file or URL for further analysis.

Technical Details

When the backdoor's file is run, it copies itself as POOLCLL.EXE file to Windows System folder. Then the backdoor installs a service named 'evmon' (display name: 'Event Monitor'). The backdoor's file is started with '-netcvs' parameter.

When active, the backdoor starts an FTP server on a random port.

The backdoor can be controlled remotely and do any of the below:

- start socks4/5 proxy
- start http proxy
- scan/exploit for vulnerabilities
- ping flood
- open command shell
- download/execute files

The backdoor contains the following scanners/exploits:

- ipc (remote shares), port 139
- mssql (Microsoft SQL servers), port 1433
- mysql, port 3306
- DCOM1 (DCOM RPC), ports 135, 445, 1025
- LSASS (MS04-011), port 445
- ftp_scan (remote ftp sites), port 21

The backdoor can spread to local networks. It contains a lot of usernames/passwords that are used in a dictionary attack.

Additionally the backdoor steals CD keys from games and other software.