Bagle.i sometimes sends copies of itself in password protected ZIP format.
In this case, the password is included in the body of the message. The zipped file is about 12KB in size.
Infected messages have the following characteristics:
Message header: different, such as: E-mail account disabling warning; E-mail account security warning.
Message body: (chosen from predefined list) for example:
Our antivirus software has detected a large ammount of viruses outgoing from your email account, you may use our free anti-virus tool to clean up your computer software.
Attachment extensions (chosen from the list below): exe, pif, zip.
The worm copies itself to the Windows system directory under the name irun4.exe and registers this file in the system registry auto-run key:
"ssate.exe" = "%system%\irun4.exe
It also creates a key in the registry:
The worm attempts to connect to a number of remote sites and to save information about the infected computer on these sites.
The worm searches for files with some extensions harvests email addresses, and then sends itself to all addresses found.
The worm attempts to counteract the updating of antivirus programs by terminating their processes.
Use antivirus (also check How To Remove section)Startup Optimizer to remove it from startup.