alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE JS/Comm100 Trojan CnC Payload Inbound"; flow:established,to_client; content:"200"; http_stat_code; http.content_type; content:"application/javascript"; http.response_body; content:"|28 28 29 3d 3e 7b 28|function|20 28 29 7b|function"; startswith; fast_pattern; content:"|27 5d 3d 3d 3d|undefined|29 7b|var"; distance:0; content:"|3d 27|abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789|2b 2f 3d 27 3b|let|20 5f|"; distance:0; reference:url,crowdstrike.com/blog/new-supply-chain-attack-leverages-comm100-chat-installer; classtype:trojan-activity; sid:2039090; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_10_04, deployment Perimeter, malware_family JS_Comm100, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_04_19, reviewed_at 2024_12_02;)