alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE MalDoc Requesting Payload 2020-04-21"; flow:established,to_server; http.method; content:"HEAD"; http.uri; content:".wbk?raw=true"; fast_pattern; endswith; http.user_agent; bsize:36; content:"Microsoft Office Existence Discovery"; http.header_names; to_lowercase; content:!"|0d 0a|referer|0d 0a|"; content:!"|0d 0a|accept"; content:!"|0d 0a|cache-"; content:!"|0d 0a|pragma|0d 0a|"; reference:md5,dffa1f38375e20e98c8ffaa752936e42; classtype:trojan-activity; sid:2029982; rev:3; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_04_21, deployment Perimeter, malware_family Maldoc, confidence High, signature_severity Major, updated_at 2024_04_29;)