Unusual Network Connection to Suspicious Web Service

Last updated 4 months ago on 2025-08-26
Created 9 months ago on 2025-03-26

About

This rule monitors for the unusual occurrence of outbound network connections to suspicious webservice domains.
Tags
Domain: EndpointOS: macOSUse Case: Threat DetectionTactic: Command and ControlData Source: Elastic DefendLanguage: kuery
Severity
medium
Risk Score
47
MITRE ATT&CK™

Command and Control (TA0011)(external, opens in a new tab or window)

License
Elastic License v2(external, opens in a new tab or window)

Definition

Rule Type
New Terms Rule
Integration Pack
Prebuilt Security Detection Rules
Index Patterns
logs-endpoint.events.network-*
Related Integrations

endpoint(external, opens in a new tab or window)

Query
text code block:
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 ) 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) 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)

Install detection rules in Elastic Security

Detect Unusual Network Connection to Suspicious Web Service in the Elastic Security detection engine by installing this rule into your Elastic Stack.

To setup this rule, check out the installation guide for Prebuilt Security Detection Rules(external, opens in a new tab or window).