alert http $HOME_NET any -> $EXTERNAL_NET any (
msg:"ET MALWARE Koobface C&C availability check";
flow:established,to_server;
flowbits:set,ET.koobfacecheck;
http.method;
content:"POST"; nocase;
http.uri;
content:"/achcheck.php"; nocase;
reference:url,us.trendmicro.com/imperia/md/content/us/trendwatch/researchandanalysis/the_20heart_20of_20koobface_final_1_.pdf;
classtype:command-and-control;
sid:2010151; rev:9;
metadata:created_at 2010_07_30, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_04_24;
)