Elastic medium stable kql

Unusual Network Connection to Suspicious Web Service

This rule monitors for the unusual occurrence of outbound network connections to suspicious webservice domains.

View Source

Detection Logic

event.category : "network" and host.os.type : "macos" and event.type : "start" and
destination.domain : (
    pastebin.* or
    paste.ee or
    ghostbin.com or
    drive.google.com or
    ?.docs.live.net or
    api.dropboxapi.* or
    content.dropboxapi.* or
    *dl.dropboxusercontent.* or
    api.onedrive.com or
    *.onedrive.org or
    onedrive.live.com or
    filebin.net or
    *.ngrok.io or
    ngrok.com or
    *.portmap.* or
    *serveo.net or
    *localtunnel.me or
    *pagekite.me or
    *localxpose.io or
    *notabug.org or
    rawcdn.githack.* or
    paste.nrecom.net or
    zerobin.net or
    controlc.com or
    requestbin.net or
    api.slack.com or
    slack-redir.net or
    slack-files.com or
    cdn.discordapp.com or
    discordapp.com or
    discord.com or
    apis.azureedge.net or
    cdn.sql.gg or
    ?.top4top.io or
    top4top.io or
    uplooder.net or
    *.cdnmegafiles.com or
    transfer.sh or
    updates.peer2profit.com or
    api.telegram.org or
    t.me or
    meacz.gq or
    rwrd.org or
    *.publicvm.com or
    *.blogspot.com or
    api.mylnikov.org or
    script.google.com or
    script.googleusercontent.com or
    paste4btc.com or
    workupload.com or
    temp.sh or
    filetransfer.io or
    gofile.io or
    store?.gofile.io or
    tiny.one or
    api.notion.com or
    *.sharepoint.com or
    *upload.ee or
    bit.ly or
    t.ly or
    cutt.ly or
    mbasic.facebook.com or
    api.gofile.io or
    file.io or
    api.anonfiles.com or
    api.trello.com or
    gist.githubusercontent.com or
    dpaste.com or
    *azurewebsites.net or
    *.zulipchat.com or
    *.4shared.com or
    filecloud.me or
    i.ibb.co or
    files.catbox.moe or
    *.getmyip.com or
    mockbin.org or
    webhook.site or
    run.mocky.io or
    *infinityfreeapp.com or
    free.keep.sh or
    tinyurl.com or
    ftpupload.net or
    lobfile.com or
    *.ngrok-free.app or
    myexternalip.com or
    yandex.ru or
    *.yandex.ru or
    *.aternos.me or
    cdn??.space or
    *.pcloud.com or
    mediafire.zip or
    urlz.fr or
    rentry.co or
    *.b-cdn.net or
    pastecode.dev or
    i.imgur.com or
    the.earth.li or
    *.trycloudflare.com or
    *.blob.core.windows.net or
    *.blob.storage.azure.net
) and 
not (destination.domain : (*.sharepoint.com or *.azurewebsites.net or "onedrive.live.com" or *.b-cdn.net or api.onedrive.com or "drive.google.com" or *.blogspot.com or *.blob.core.windows.net or *.blob.storage.azure.net) and process.code_signature.subject_name:(*Microsoft* or "Software Signing" or "Apple Mac OS Application Signing" or *VMware*) and process.code_signature.trusted:true) and 
not (process.code_signature.subject_name:(*Mozilla* or *Google* or *Brave* or *Opera* or "Software Signing" or *Zscaler* or *Browser*) and process.code_signature.trusted:true)  and 
not (destination.domain :("discord.com" or cdn.discordapp.com or "content.dropboxapi.com" or "dl.dropboxusercontent.com") and process.code_signature.subject_name :(*Discord* or *Dropbox*) and process.code_signature.trusted:true)

Field Validations

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