Versions (3)
Version DetailsCurrent
Rev: 1 • Apr 28, 2023, 12:00 PMET MALWARE Donot Group Pult Downloader Activity (POST) M4
alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Donot Group Pult Downloader Activity (POST) M4"; flow:established,to_server; urilen:8<>28; http.method; content:"POST"; http.uri; content:!"|2e|"; http.content_type; content:"application/x-www-form-urlencoded"; bsize:33; http.request_body; content:"data="; startswith; fast_pattern; http.user_agent; content:!"Linux|3b|"; content:!"iPhone|3b|"; http.header_names; content:"|0d 0a|Content-Type|0d 0a|User-Agent|0d 0a|Host|0d 0a|Content-Length|0d 0a|Cache-Control|0d 0a 0d 0a|"; content:!"Referer"; reference:md5,3e8c4e12f511646b26633e5318788c81; classtype:trojan-activity; sid:2045233; rev:1; metadata:attack_target Client_Endpoint, created_at 2023_04_28, deployment Perimeter, deployment SSLDecrypt, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_05_01; target:src_ip;)
Apr 28, 2023, 12:00 PM
May 1, 2023, 12:00 PM
Apr 28, 2023, 11:00 PM
Aug 25, 2025, 9:35 PM
rules/emerging-malware.rules