alert http $HOME_NET any -> $EXTERNAL_NET any (
msg:"ET MALWARE WORM_VOBFUS Requesting exe";
flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:"?"; offset:2; depth:11;
pcre:"/^\/[a-z0-9]{1,10}\/?\?.+?$/i";
http.user_agent;
content:"Mozilla/4.0 (compatible|3b 20|MSIE 7.0|3b 20|Windows NT 5.1|3b 20|SV1)"; fast_pattern;
http.header_names;
content:"|0d 0a|User-Agent|0d 0a|Host|0d 0a|"; depth:20;
reference:md5,f127ed76dc5e48f69a1070f314488ce2;
reference:url,blog.trendmicro.com/trendlabs-security-intelligence/watch-out-for-worm_vobfus/;
classtype:trojan-activity;
sid:2015969; rev:15;
metadata:created_at 2012_11_30, signature_severity Major, updated_at 2020_08_17;
)