“The observed messages appear as if they have been sent from a Twitter account; however, unlike a legitimate Twitter message, there is no invitation URL present in the body,” a Symantec blog post says. “Instead, the user will see an attachment that appears as a .zip file that purportedly contains an invitation card.”

The name of the attachment is “Invitation Card.zip” and Symantec identified it as W32.Ackantta.B@mm, a worm targeting Windows computers that was discovered in an e-card virus attack in February, according to Symantec. The worm gathers e-mail addresses from compromised PCs and spreads by copying itself to removable drives and shared folders.

If you recieve any type of emails like the ones mentioned here, please delete them immediately.