alert udp $HOME_NET 1024: -> $EXTERNAL_NET any (msg:"ET MALWARE Palevo/BFBot/Mariposa client join attempt"; dsize:7; content:"|61|"; depth:1; flowbits:set,ET.MariposaJoin; reference:url,defintel.com/docs/Mariposa_Analysis.pdf; reference:url,defintel.blogspot.com/2009/09/half-of-fortune-100-companies.html; reference:url,blogs.pcmag.com/securitywatch/2009/09/botnet_reported_loose_in_fortu.php; reference:url,www.symantec.com/business/security_response/writeup.jsp?docid=2009-093006-0442-99&tabid=2; reference:url,www.symantec.com/connect/blogs/mariposa-butterfly; classtype:trojan-activity; sid:2010100; rev:7; metadata:created_at 2010_07_30, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)