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Discovered: October 13, 1999
Updated: February 13, 2007 11:47:30 AM
Also Known As: Troj_Crazy, Badass.Worm, I-worm.Badass
Type: Worm

W32.Badass.24576 is a worm that usually comes as BADASS.EXE program attachment in an email. The size of this attached program file is 24,576 bytes. The email message has a jumbled looking subject line and a message body in Dutch:
Dit is wel grappig! :-)

The worm displays an insulting message box with un-click-able NO button. In the background, it uses Microsoft Outlook to send a copy of itself to people in the MS Outlook address book. Symantec Antivirus Research Center has not received any report of this worm from the field.

Antivirus Protection Dates

  • Initial Rapid Release version December 15, 2000
  • Latest Rapid Release version December 15, 2000
  • Initial Daily Certified version December 15, 2000
  • Latest Daily Certified version December 15, 2000

Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.

Writeup By: Raul Elnitiarta

Discovered: October 13, 1999
Updated: February 13, 2007 11:47:30 AM
Also Known As: Troj_Crazy, Badass.Worm, I-worm.Badass
Type: Worm

The worm routine appears to be a straight Visual Basic port of W97M.Melissa payload routine. In fact, it is so similar that it marks its activation in Windows Registry too. The marker is

VBA Program Settings\Windows\CurrentVersion
as a value: CMCTL32

If the marker is present, the worm routine is not activated. Everytime it is executed, the worm displays an insulting message box:

 An error has occured probably because your  c__ smells bad.
 Is this really so?

When the YES button is clicked, it displays the following message:

Contact your local supermarket for toiletpaper  and soap to solve this problem.


Symantec Security Response encourages all users and administrators to adhere to the following basic security "best practices":

  • Use a firewall to block all incoming connections from the Internet to services that should not be publicly available. By default, you should deny all incoming connections and only allow services you explicitly want to offer to the outside world.
  • Enforce a password policy. Complex passwords make it difficult to crack password files on compromised computers. This helps to prevent or limit damage when a computer is compromised.
  • Ensure that programs and users of the computer use the lowest level of privileges necessary to complete a task. When prompted for a root or UAC password, ensure that the program asking for administration-level access is a legitimate application.
  • Disable AutoPlay to prevent the automatic launching of executable files on network and removable drives, and disconnect the drives when not required. If write access is not required, enable read-only mode if the option is available.
  • Turn off file sharing if not needed. If file sharing is required, use ACLs and password protection to limit access. Disable anonymous access to shared folders. Grant access only to user accounts with strong passwords to folders that must be shared.
  • Turn off and remove unnecessary services. By default, many operating systems install auxiliary services that are not critical. These services are avenues of attack. If they are removed, threats have less avenues of attack.
  • If a threat exploits one or more network services, disable, or block access to, those services until a patch is applied.
  • Always keep your patch levels up-to-date, especially on computers that host public services and are accessible through the firewall, such as HTTP, FTP, mail, and DNS services.
  • Configure your email server to block or remove email that contains file attachments that are commonly used to spread threats, such as .vbs, .bat, .exe, .pif and .scr files.
  • Isolate compromised computers quickly to prevent threats from spreading further. Perform a forensic analysis and restore the computers using trusted media.
  • Train employees not to open attachments unless they are expecting them. Also, do not execute software that is downloaded from the Internet unless it has been scanned for viruses. Simply visiting a compromised Web site can cause infection if certain browser vulnerabilities are not patched.
  • If Bluetooth is not required for mobile devices, it should be turned off. If you require its use, ensure that the device's visibility is set to "Hidden" so that it cannot be scanned by other Bluetooth devices. If device pairing must be used, ensure that all devices are set to "Unauthorized", requiring authorization for each connection request. Do not accept applications that are unsigned or sent from unknown sources.
  • For further information on the terms used in this document, please refer to the Security Response glossary.

Writeup By: Raul Elnitiarta

Discovered: October 13, 1999
Updated: February 13, 2007 11:47:30 AM
Also Known As: Troj_Crazy, Badass.Worm, I-worm.Badass
Type: Worm

As with other worm or trojan horse programs, the detected file must be deleted. There is no need to remove the marker from the Windows Registry. In fact, its presence dis-activates the worm routine.

Writeup By: Raul Elnitiarta