Versions (3)
Version DetailsCurrent
Rev: 3 • Jun 22, 2022, 12:00 PMET DELETED Suspicious Zipped Filename in Outbound POST Request (Steam_htmlcache.txt) M2
alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET DELETED Suspicious Zipped Filename in Outbound POST Request (Steam_htmlcache.txt) M2"; flow:established,to_server; http.method; content:"POST"; http.request_body; content:"Content-Disposition|3a 20|form-data|3b 20|name="; content:".zip|22 0d 0a|"; within:150; content:"|0d 0a|PK|03 04|"; distance:0; byte_test:1,<=,20,0,relative; content:"Steam_htmlcache.txt"; distance:0; nocase; fast_pattern; classtype:trojan-activity; sid:2037092; rev:3; metadata:attack_target Client_Endpoint, created_at 2022_06_22, deployment Perimeter, deprecation_reason Duplicate, performance_impact Low, signature_severity Major, tag Stealer, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_06_23;)
Jun 22, 2022, 12:00 PM
Jun 23, 2022, 12:00 PM
Jun 23, 2022, 12:00 AM
Sep 2, 2025, 9:35 PM
rules/emerging-deleted.rules