alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET INFO maas.io Image Download Flowbit Set"; flow:established,to_server; flowbits:set,ET.Maas.Site.Download; flowbits:noalert; http.method; content:"GET"; http.user_agent; content:"maas/2.3."; http.host; content:"images.maas.io"; classtype:not-suspicious; sid:2026747; rev:4; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2019_01_02, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_04_19;)