alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Win32/Enchanim Check-in Response"; flow:established,to_client; file_data; content:"|3a|some_magic_code1"; distance:9; within:29; endswith; reference:md5,2642999a085443e9055b292c4d405e64; reference:md5,37066ed52cd7510bf04808c332599f1c; reference:url,www.seculert.com/blog/2013/04/magic-persistent-threat.html; classtype:trojan-activity; sid:2016769; rev:3; metadata:created_at 2013_04_19, malware_family Win32_Enchanim, signature_severity Major, updated_at 2019_09_28;)