alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Meredrop/Nusump Checkin"; flow:established,to_server; http.uri; content:"?id="; content:"&co="; content:"&us="; content:"&os="; content:"&vr="; content:"&dt="; fast_pattern; reference:md5,463cdec2df12a04d6ea1d015746ee950; reference:md5,ef0616d75bd892ed69fe22a510079686; reference:url,www.microsoft.com/security/portal/Threat/Encyclopedia/Entry.aspx?Name=Worm%3AWin32%2FNusump&ThreatID=-2147329857; classtype:command-and-control; sid:2011489; rev:6; metadata:created_at 2010_09_28, signature_severity Major, updated_at 2020_04_20;)