Threat Description

Wootbot.AL

Details

Aliases: Wootbot.AL, MYSQL Exploit, Backdoor.Win32.Wootbot.al, Backdoor.Wootbot.gen, Backdoor.Win32.Wootbot.gen
Category: Malware
Type: Backdoor
Platform: W32

Summary


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.



Removal


Automatic action

Once detected, the F-Secure security product will automatically disinfect the suspect file by either deleting it or renaming it.

More scanning & removal options

More information on scanning or removal options is available in the documentation for your F-Secure security product on the Downloads section of our Home - Global site.

You may also refer to the Knowledge Base on the F-Secure Community site for further assistance.

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.



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.






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