W32/Chasnah.A.worm is a worm that prevents the files with an EXE, COM, PIF and SCR extension from being run. It can also lower the security settings on the infected computer by disabling security-related files.

Email-Worm.Win32.VB.cv spreads via unsecured network shares. It can modify internet explorer and add to favorites the following:

ABOUT_BANGLADESH - http://ourbangla.com
I_HATE_RAZAKER - http://muktijuddha.com
VISIT_BANGLADESH - http://www.parjatan.org

W32/Pahooka.A.worm prevents several security programs from being run, leaving the computer vulnerable against possible threats.

W32.Netsky.BG created a mutex file ~~~Bloodred~~~owns~~~you~~~xoxo~~~2004. It can open a backdoor on infected computer to allow unauthorized access.

W32.Vispat.A@mm modifies Internet Explorer homepage to www.internet-explorer.name and redirects web browsing to  http://google-hard.com

W32.Svich is a worm that spreads through Yahoo! Messenger and by copying itself to all drives. It also downloads potentially malicious files and lowers security settings on the compromised computer.

W32.Pifio is a worm that copies itself to all drives and downloads other potentially malicious files. It also ends certain security-related processes.

W32.Gexin.A is a worm that spreads through shared folders and removable drives. It modifies certain .htm, .php, and .asp files on the compromised computer and downloads additional malicious content.