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[Tuning] Reverse Shell Rules (#2959)

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* [Rule Tuning] Reverse Shell Rule destination.ip tuning

* Updated updated_date
This commit is contained in:
Ruben Groenewoud
2023-07-25 14:55:56 +02:00
committed by GitHub
parent 93845626b7
commit dbd7ed65a9
5 changed files with 14 additions and 10 deletions
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rules/linux/execution_shell_via_tcp_cli_utility_linux.toml
+3 -2
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@@ -4,7 +4,7 @@ integration = ["endpoint"]
maturity = "production"
min_stack_comments = "New fields added: required_fields, related_integrations, setup"
min_stack_version = "8.3.0"
updated_date = "2023/07/04"
updated_date = "2023/07/25"
[rule]
author = ["Elastic"]
@@ -29,7 +29,8 @@ type = "eql"
query = '''
sequence by host.id with maxspan=1s
[ network where host.os.type == "linux" and event.type == "start" and event.action == "connection_attempted" and
process.name : ("bash", "dash", "sh", "tcsh", "csh", "zsh", "ksh", "fish", "socat") ] by process.entity_id
process.name : ("bash", "dash", "sh", "tcsh", "csh", "zsh", "ksh", "fish", "socat") and
destination.ip != null and destination.ip != "127.0.0.1" and destination.ip != "::1" ] by process.entity_id
[ process where host.os.type == "linux" and event.type == "start" and event.action : ("exec", "fork") and
process.name : ("bash", "dash", "sh", "tcsh", "csh", "zsh", "ksh", "fish") and
process.parent.name : ("bash", "dash", "sh", "tcsh", "csh", "zsh", "ksh", "fish", "socat") ] by process.parent.entity_id