Command and Control (TA0011)(external, opens in a new tab or window)
Exfiltration (TA0010)(external, opens in a new tab or window)
endpoint(external, opens in a new tab or window)
sentinel_one_cloud_funnel(external, opens in a new tab or window)
text code block:network where host.os.type == "windows" and dns.question.name != null and process.name != null and not (?user.id in ("S-1-5-18", "S-1-5-19", "S-1-5-20") or user.domain == "NT AUTHORITY") and /* Add new WebSvc domains here */ dns.question.name : ( "raw.githubusercontent.*", "pastebin.*", "paste4btc.com", "paste.ee", "ghostbin.com", "drive.google.com", "?.docs.live.net", "api.dropboxapi.*", "content.dropboxapi.*", "dl.dropboxusercontent.*", "api.onedrive.com", "*.onedrive.org", "onedrive.live.com", "filebin.net", "*.ngrok.io", "ngrok.com", "*.portmap.*", "*serveo.net", "*localtunnel.me", "*pagekite.me", "*localxpose.io", "*notabug.org", "rawcdn.githack.*", "paste.nrecom.net", "zerobin.net", "controlc.com", "requestbin.net", "slack.com", "api.slack.com", "slack-redir.net", "slack-files.com", "cdn.discordapp.com", "discordapp.com", "discord.com", "apis.azureedge.net", "cdn.sql.gg", "?.top4top.io", "top4top.io", "www.uplooder.net", "*.cdnmegafiles.com", "transfer.sh", "gofile.io", "updates.peer2profit.com", "api.telegram.org", "t.me", "meacz.gq", "rwrd.org", "*.publicvm.com", "*.blogspot.com", "api.mylnikov.org", "file.io", "stackoverflow.com", "*files.1drv.com", "api.anonfile.com", "*hosting-profi.de", "ipbase.com", "ipfs.io", "*up.freeo*.space", "api.mylnikov.org", "script.google.com", "script.googleusercontent.com", "api.notion.com", "graph.microsoft.com", "*.sharepoint.com", "mbasic.facebook.com", "login.live.com", "api.gofile.io", "api.anonfiles.com", "api.notion.com", "api.trello.com", "gist.githubusercontent.com", "files.pythonhosted.org", "g.live.com", "*.zulipchat.com", "webhook.site", "run.mocky.io", "mockbin.org", "www.googleapis.com", "googleapis.com", "global.rel.tunnels.api.visualstudio.com", "*.devtunnels.ms", "api.github.com", "*.blob.core.windows.net", "*.blob.storage.azure.net") and /* Insert noisy false positives here */ not ( ( process.executable : ( "?:\\Program Files\\*.exe", "?:\\Program Files (x86)\\*.exe", "?:\\ProgramData\\Microsoft\\Windows Defender\\Platform\\*\\MsMpEng.exe", "?:\\Users\\*\\AppData\\Local\\BraveSoftware\\*\\Application\\brave.exe", "?:\\Users\\*\\AppData\\Local\\Google\\Chrome\\Application\\chrome.exe", "?:\\Users\\*\\AppData\\Local\\Microsoft\\OneDrive\\OneDrive.exe", "?:\\Users\\*\\AppData\\Local\\Programs\\Opera*\\opera.exe", "?:\\Users\\*\\AppData\\Local\\Programs\\Fiddler\\Fiddler.exe", "?:\\Users\\*\\AppData\\Local\\PowerToys\\PowerToys.exe", "?:\\Users\\*\\AppData\\Local\\Vivaldi\\Application\\vivaldi.exe", "?:\\Users\\*\\AppData\\Local\\Zen Browser\\zen.exe", "?:\\Users\\*\\Wavesor Software\\WaveBrowser\\wavebrowser.exe", "?:\\Windows\\System32\\MicrosoftEdgeCP.exe", "?:\\Windows\\system32\\mobsync.exe", "?:\\Windows\\SysWOW64\\mobsync.exe", "?:\\Windows\\system32\\svchost.exe", "?:\\Windows\\System32\\smartscreen.exe", "?:\\Windows\\System32\\wsl.exe", "?:\\Windows\\System32\\WWAHost.exe" ) ) or /* Discord App */ (process.name : "Discord.exe" and (process.code_signature.subject_name : "Discord Inc." and process.code_signature.trusted == true) and dns.question.name : ("discord.com", "cdn.discordapp.com", "discordapp.com") ) or /* MS Sharepoint / OneDrive */ (process.name : ("Microsoft.SharePoint.exe", "OneDrive.Sync.Service.exe") and dns.question.name : "onedrive.live.com" and (process.code_signature.subject_name : "Microsoft Corporation" and process.code_signature.trusted == true) ) or /* Obsidian - Plugins are stored on raw.githubusercontent.com */ (process.name : "Obsidian.exe" and (process.code_signature.subject_name : "Dynalist Inc" and process.code_signature.trusted == true) and dns.question.name : "raw.githubusercontent.com" ) or /* WebExperienceHostApp */ (process.name : "WebExperienceHostApp.exe" and (process.code_signature.subject_name : "Microsoft Windows" and process.code_signature.trusted == true) and dns.question.name : ("onedrive.live.com", "skyapi.onedrive.live.com") ) or /* IntelliJ IDEA connecting to raw.githubusercontent.com */ (process.code_signature.subject_name : "JetBrains s.r.o." and process.code_signature.trusted == true and dns.question.name : ("api.github.com", "raw.githubusercontent.com") ) or (process.code_signature.subject_name : "Microsoft *" and process.code_signature.trusted == true and dns.question.name : ("*.sharepoint.com", "graph.microsoft.com", "g.live.com", "login.live.com", "*.blob.core.windows.net", "*.blob.storage.azure.net") ) or (process.code_signature.subject_name : ("Python Software Foundation", "Anaconda, Inc.") and process.code_signature.trusted == true and dns.question.name : "files.pythonhosted.org" ) or /* Zoom */ (process.name : "Zoom.exe" and ( process.code_signature.subject_name : ("Zoom Video Communications, Inc.", "Zoom Communications, Inc.") and process.code_signature.trusted == true) and dns.question.name : ("www.googleapis.com", "graph.microsoft.com") ) or /* VSCode */ (process.name : "Code.exe" and (process.code_signature.subject_name : "Microsoft Corporation" and process.code_signature.trusted == true) and dns.question.name : ("api.github.com", "raw.githubusercontent.com") ) or /* Terraform */ (process.name : "terraform-provider*.exe" and (process.code_signature.subject_name : "HashiCorp, Inc." and process.code_signature.trusted == true) and dns.question.name : "graph.microsoft.com" ) or ( process.code_signature.trusted == true and process.code_signature.subject_name : ( "Johannes Schindelin", "Redis Inc.", "Slack Technologies, LLC", "Cisco Systems, Inc.", "Dropbox, Inc", "Amazon.com Services LLC", "Island Technology Inc.", "GitHub, Inc.", "Red Hat, Inc", "Mozilla Corporation" ) ) )
Install detection rules in Elastic Security
Detect Connection to Commonly Abused Web Services 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).