alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET CURRENT_EVENTS Possible Locky Payload DL Sept 26 2017 M4"; flow:established,to_server; urilen:>6; pcre:"/^(?:\/(?:(?:af|p66)\/(?=(?:[a-zA-Z]{0,12}[0-9]|(?=[a-z0-9]{0,12}[A-Z])(?=[A-Z0-9]{0,12}[a-z])))[A-Za-z0-9]{6,13}|(?=(?:[a-zA-Z]{0,12}[0-9]|(?=[a-z0-9]{0,12}[A-Z])(?=[A-Z0-9]{0,12}[a-z])))[A-Za-z0-9]{6,13}\?*(?:(?P[^=&]+)=(?P=var1))?))$/U"; content:!"Referer|3a|"; http_header; content:!"Cookie|3a|"; content:"HTTP/1.1|0d 0a|Accept|3a 20|*/*|0d 0a|"; content:"Firefox"; http_user_agent; flowbits:set,ET.Locky; flowbits:noalert; metadata: former_category CURRENT_EVENTS; classtype:trojan-activity; sid:2026462; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, deployment Perimeter, signature_severity Major, created_at 2017_10_03, malware_family Locky, performance_impact Low, updated_at 2018_10_09;)

Added 2018-10-09 18:08:44 UTC


Topic revision: r1 - 2018-10-09 - TWikiGuest
 
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