Spamvertised Post Office Express Mail (USPS) emails lead to malware

A currently spamvertised malware campaign is brand-jacking the USPS in an attempt to trick users into downloading and executing a malicious file.

Sample subject: Post Express Information. Your package is available for pick up. NR[random number]

Sample attachment: Post_Express_Label_ID_[random number].zip; Post_Express_Label.exe

Sample message: Dear client Email notice number.[random number]. Your package has been returned to the Post Express office. The reason of the return is "Error in the delivery address" Important message! Attached to the letter mailing label contains the details of the package delivery. You have to print mailing label, and come in the Post Express office in order to receive the packages! Thank you for using our services. Post Express Support.

Users are advised to avoid interacting with suspicious file attachments.