A particularly aggressive Ransomware campaign was recently released.  It was observed and mention by several Companies around the world, their IT departments had notified that more than 120,000 E-Mails were sent daily over the last weeks. Ransomware is malicious software that encrypts files and demands payment for the decryption key. In the latest strain: The spam subject is an empty, “Fw:”, with a zip file attachment named: xls_convert_recipientname_randomnumber.zip. The body of the message indicates that the attachment contains requested invoices in Excel file format. The other campaign was sent with subject “Profile” containing a similar zip file attachment. The name of that attached file is: recipientname_profile_randomnumber.zip. As always, we suggest … [Read more...]