Samirbous
2e6b353f5e
* [New Rule] Potential Reverse Shell Activity via Terminal * extra reference * adjusted process.args for coverage resilience * Update execution_revershell_via_shell_cmd.toml * Update rules/cross-platform/execution_revershell_via_shell_cmd.toml Co-authored-by: Brent Murphy <56412096+bm11100@users.noreply.github.com> * Update rules/cross-platform/execution_revershell_via_shell_cmd.toml Co-authored-by: Justin Ibarra <brokensound77@users.noreply.github.com> * encoded ref url Co-authored-by: Brent Murphy <56412096+bm11100@users.noreply.github.com> Co-authored-by: Justin Ibarra <brokensound77@users.noreply.github.com>
44 lines
1.4 KiB
TOML
44 lines
1.4 KiB
TOML
[metadata]
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creation_date = "2020/01/07"
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maturity = "production"
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updated_date = "2020/01/07"
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[rule]
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author = ["Elastic"]
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description = "Identifies the execution of a shell process with suspicious arguments which may be indicative of reverse shell activity."
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from = "now-9m"
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index = ["auditbeat-*", "logs-endpoint.events.*"]
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language = "eql"
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license = "Elastic License"
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name = "Potential Reverse Shell Activity via Terminal"
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references = [
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"https://github.com/swisskyrepo/PayloadsAllTheThings/blob/master/Methodology%20and%20Resources/Reverse%20Shell%20Cheatsheet.md",
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"https://github.com/WangYihang/Reverse-Shell-Manager",
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"https://www.netsparker.com/blog/web-security/understanding-reverse-shells/",
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]
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risk_score = 73
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rule_id = "a1a0375f-22c2-48c0-81a4-7c2d11cc6856"
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severity = "high"
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tags = ["Elastic", "Host", "Linux", "macOS", "Threat Detection", "Execution"]
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type = "eql"
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query = '''
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process where event.type in ("start", "process_started") and
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process.name in ("sh", "bash", "zsh", "dash", "zmodload") and
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process.args:("*/dev/tcp/*", "*/dev/udp/*", "zsh/net/tcp", "zsh/net/udp")
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'''
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[[rule.threat]]
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framework = "MITRE ATT&CK"
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[[rule.threat.technique]]
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id = "T1059"
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name = "Command and Scripting Interpreter"
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reference = "https://attack.mitre.org/techniques/T1059/"
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[rule.threat.tactic]
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id = "TA0002"
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name = "Execution"
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reference = "https://attack.mitre.org/tactics/TA0002/"
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