alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET CURRENT_EVENTS JavaScript Determining OS MAC and Serving Java Archive File"; flow:established,to_client; file_data; content:"<script"; content:"navigator.userAgent.indexOf|28 27|Mac|27 29|"; distance:0; nocase; content:"setAttribute|28 27|code|27|"; distance:0; nocase; content:".class"; nocase; distance:0; content:"setAttribute|28 27|archive|27|"; distance:0; nocase; content:".jar"; nocase; distance:0; reference:url,blog.trendmicro.com/another-tibetan-themed-malware-email-campaign-targeting-windows-and-macs/; reference:cve,2011-3544; classtype:bad-unknown; sid:2014565; rev:3; metadata:created_at 2012_04_16, signature_severity Minor, updated_at 2019_07_26;)