ET WEB_SPECIFIC_APPS Progress ShareFile Webshell Upload attempt (CVE-2026-2701)

alert http any any -> $HOME_NET any (
    msg:"ET WEB_SPECIFIC_APPS Progress ShareFile Webshell Upload attempt (CVE-2026-2701)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/upload.aspx|3f|"; startswith;
    content:"id|3d|";
    content:"uploadid|3d|";
    content:"bp|3d|";
    content:"accountid|3d|";
    content:"exp|3d|";
    content:"h|3d|";
    http.request_body;
    content:"name|3d 22|bp|22|";
    content:"name|3d 22|accountid|22|";
    content:"name|3d 22|bm|22|";
    content:"name|3d 22|bo|22|";
    content:"name|3d 22|uploadid|22|";
    content:"name|3d 22|rsu|22|";
    content:"name|3d 22|NeatUpload|5f|PostBackID|22|"; fast_pattern;
    content:"name|3d 22|onfinishurl|22|";
    content:"|3c|http"; within:20;
    content:"name|3d 22|unzip|22|";
    content:"true"; within:20;
    content:"filename|3d 22|";
    content:"|2e|zip|22 3b|"; distance:0;
    content:"UniqueID|3d 22|";
    content:"PK|03 04|"; distance:0;
    content:"|2e|asp"; distance:0;
    reference:url,labs.watchtowr.com/youre-not-supposed-to-sharefile-with-everyone-progress-sharefile-pre-auth-rce-chain-cve-2026-2699-cve-2026-2701/;
    reference:cve,2026-2701;
    classtype:attempted-admin;
    sid:2068627; rev:1;
    metadata:affected_product Progress_ShareFile, attack_target Networking_Equipment, tls_state TLSDecrypt, created_at 2026_04_07, cve CVE_2026_2701, deployment Perimeter, deployment Internal, deployment SSLDecrypt, performance_impact Low, confidence High, signature_severity Major, tag Exploit, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2026_04_07, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;
    target:dest_ip;
)