alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/AppleJeus CnC Checkin (POST)"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/daemon/update.php"; bsize:18; fast_pattern; http.header_names; content:"auth_timestamp|0d 0a|auth_signature|0d 0a|"; http.request_body; content:"rlz="; startswith; content:"&ei="; distance:0; content:"&act=check"; endswith; reference:url,volexity.com/blog/2022/12/01/buyer-beware-fake-cryptocurrency-applications-serving-as-front-for-applejeus-malware; classtype:trojan-activity; sid:2041664; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_12_02, deployment Perimeter, deployment SSLDecrypt, malware_family Win32_AppleJeus, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_12_02, reviewed_at 2025_10_24;)