Versions (4)
Version DetailsCurrent
Rev: 3 • Dec 8, 2021, 12:00 PMET MALWARE Maldoc Retrieving Binary
alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Maldoc Retrieving Binary"; flow:established,to_client; flowbits:isset,ET.maldoc.trick; http.start; content:"HTTP/1.1 200 OK|0d 0a|Server|3a 20|fasthttp|0d 0a|"; fast_pattern; file.data; content:"MZ"; startswith; reference:md5,e6258c27362df0668295258b69a5a74d; reference:md5,91314d1cdd3bfb38daba9273730ed1a4; classtype:trojan-activity; sid:2034632; rev:3; metadata:attack_target Client_Endpoint, created_at 2021_12_08, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_03_20;)
Dec 8, 2021, 12:00 PM
Mar 20, 2023, 12:00 PM
Sep 21, 2024, 3:00 AM
Sep 8, 2025, 9:34 PM
rules/emerging-malware.rules