The PSW.Boobs is a data stealing trojan that appeared in the end of August 1999. The trojan itself is a packed Windows PE executable. The original name is BOOBS.EXE but it can arrive named differently.
Based on the settings of your F-Secure security product, it will either move the file to the quarantine where it cannot spread or cause harm, or remove it.
A False Positive is when a file is incorrectly detected as harmful, usually because its code or behavior resembles known harmful programs. A False Positive will usually be fixed in a subsequent database update without any action needed on your part. If you wish, you may also:
Check for the latest database updates
First check if your F-Secure security program is using the latest updates, then try scanning the file again.
Submit a sample
After checking, if you still believe the file is incorrectly detected, you can submit a sample of it for re-analysis.
Note: If the file was moved to quarantine, you need to collect the file from quarantine before you can submit it.
Exclude a file from further scanning
If you are certain that the file is safe and want to continue using it, you can exclude it from further scanning by the F-Secure security product.
Note: You need administrative rights to change the settings.
Being run the trojan creates some Registry entries including the one which will enable it to run during all next Windows sessions. Unlike other password stealing trojans the PSW.Boobs doesn't copy itself to \Windows\ or \Windows\System\ directory and is always started from the same location it was run first time.
After activation the trojan displays a dialog with a picture of a nude girl and a message 'Click Here'. When the picture is clicked the trojan animates it. At the same time the trojan scans all directory tree of the first hard drive and creates a log file WSTMP.$$$ where locations of all DOC files are listed. The trojan uses this file as a 'flag' and doesn't show its dialog box again during further activations if this file already exists. The trojan also creates an empty TMP.$$$ file in root directory of drive C:.
After reboot the trojan gets control and looks for a valid Internet connection. When it is acquired the trojan sends all DOC files listed in WSTMP.$$$ to an email address in South Africa <pearcem@sacs.co.za>. The subject line of the message is 'NBS As Requested'. The trojan doesn't use any email browser to send out messages, so data leak might be difficult to discover.
To remove the trojan from computer it's sufficient to delete its executable in DOS as the file is blocked by Windows when the trojan is active.
F-Secure provides detection and removal of this trojan with the latest AVC updates that can be downloaded from our ftp site: