alert tcp $HOME_NET any -> $EXTERNAL_NET 25 (msg:"ET WORM Possible Atak.mm Worm Outbound"; flow: to_server,established; content:"Authorized Researcher Only"; content:"filename="; content:".zip"; pcre:"m/(Read the Result\!|Important Data\!)/"; reference:url,securityresponse.symantec.com/avcenter/venc/data/w32.atak@mm.html; classtype: trojan-activity; sid: 2000494; rev:7;)

Added 2008-01-31 10:12:24 UTC

alert tcp $HOME_NET any -> $EXTERNAL_NET 25 (msg:"ET WORM Possible Atak.mm Worm Outbound"; flow: to_server,established; content:"Authorized Researcher Only"; content:"filename="; content:".zip"; pcre:"m/(Read the Result\!|Important Data\!)/"; reference:url,securityresponse.symantec.com/avcenter/venc/data/w32.atak@mm.html; classtype: trojan-activity; sid: 2000494; rev:7;)

Added 2008-01-31 10:12:24 UTC

alert tcp $HOME_NET any -> $EXTERNAL_NET 25 (msg: "BLEEDING-EDGE VIRUS Possible Atak.mm Worm Outbound"; flow: to_server,established; content:"Authorized Researcher Only"; content:"filename="; content:".zip"; pcre:"m/(Read the Result\!|Important Data\!)/"; reference:url,securityresponse.symantec.com/avcenter/venc/data/w32.atak@mm.html; classtype: trojan-activity; sid: 2000494; rev:6; )