Weekly Infosec News Brief: 21-27 March 2016

"Maktub Locker" Ransomware Stands Out for Evasiveness and Design A new strain of ransomware was discovered last week, and is called "Maktub Locker." This ransomware is characterized by its evasive properties once installed; many file locations and even extensions are different on every victim. The ransom demanded to decrypt victims' files is set on a sliding scale so that the ransom increases the longer you wait to pay. This malware is able to function with or without its being able to access any external command & control server, which is unusual and eliminates a common method of limiting the damage from ransomware. Despite all the sophistication, the primary delivery mechanism to date for this scourge has been as a ".scr" file attached to emails, sometimes inside a ".zip" file. Please test your organizational email system to ensure that ".scr" files cannot be received in emails, whether in the form of a zip file or not...