The Anna Kournikova worm was a regular email worm written in Visual Basic Script (VBS) It forwarded itself via emails using details it harvested from your Microsoft Outlook address book. The worm, which Sophos called VBS/SST-A, didnt involve any blood, sweat and tears for its creator, 20-year-old Jan de Wit. He simply downloaded from the internet a virus construction kit which generated his malware for him. The real genius of the worm was not in its coding but in its social engineering.”]
Source: https://grahamcluley.com/memories-anna-kournikova-worm/