UPDATED POST - NOW WITH DETAILED TECHNICAL ANALYSIS!
During October 17 to 21, Morphisec identified and prevented several malicious and sophisticated macro-based documents at the site of one of our customers delivering a fileless Kovter backdoor Trojan attack. This and similar attacks illustrate the troubling trend that macro-based malspam campaigns are attacking enterprises with modified evasion techniques now on a weekly basis. With antivirus products updating their signatures within 3-7 days of the detection of an attack, the window of opportunity is big enough for cybercriminals to score.
