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[Tuning] Unusual Network Connection to Suspicious Web Service #5008

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merged 1 commit into from
Aug 26, 2025
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[Tuning] Unusual Network Connection to Suspicious Web Service #5008

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9 changes: 6 additions & 3 deletions rules/macos/command_and_control_unusual_network_connection_to_suspicious_web_service.toml
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Original file line number Diff line number Diff line change
Expand Up @@ -2,7 +2,7 @@
creation_date = "2025/03/26"
integration = ["endpoint"]
maturity = "production"
updated_date = "2025/04/07"
updated_date = "2025/08/26"

[rule]
author = ["Elastic"]
Expand Down Expand Up @@ -164,7 +164,10 @@ destination.domain : (
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)
'''

[[rule.threat]]
Expand All @@ -191,4 +194,4 @@ value = ["host.id", "process.executable", "destination.domain"]

[[rule.new_terms.history_window_start]]
field = "history_window_start"
value = "now-7d"
value = "now-7d"
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