Justin Ibarra
eeb8ab7744
* Expand timestamp_override tests
* removed timestamp_override from eql sequence rules
* add config entry for eql rules with beats index and t_o
* add timestamp_override to missing fields
Removed changes from:
- rules/cross-platform/impact_hosts_file_modified.toml
- rules/windows/credential_access_lsass_memdump_file_created.toml
- rules/windows/defense_evasion_adding_the_hidden_file_attribute_with_via_attribexe.toml
- rules/windows/defense_evasion_execution_lolbas_wuauclt.toml
- rules/windows/defense_evasion_suspicious_certutil_commands.toml
- rules/windows/execution_command_shell_started_by_svchost.toml
(selectively cherry picked from commit 6bdfddac8e)
57 lines
1.9 KiB
TOML
57 lines
1.9 KiB
TOML
[metadata]
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creation_date = "2021/09/29"
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maturity = "production"
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updated_date = "2022/03/31"
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[rule]
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author = ["Elastic"]
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description = """
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An adversary may attempt to get detailed information about the operating system and hardware. This rule identifies
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common locations used to discover virtual machine hardware by a non-root user. This technique has been used by the Pupy
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RAT and other malware.
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"""
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false_positives = [
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"""
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Certain tools or automated software may enumerate hardware information. These tools can be exempted via user name or
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process arguments to eliminate potential noise.
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""",
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]
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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 v2"
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name = "Virtual Machine Fingerprinting via Grep"
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note = """## Config
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If enabling an EQL rule on a non-elastic-agent index (such as beats) for versions <8.2, events will not define `event.ingested` and default fallback for EQL rules was not added until 8.2, so you will need to add a custom pipeline to populate `event.ingested` to @timestamp for this rule to work.
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"""
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references = ["https://objective-see.com/blog/blog_0x4F.html"]
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risk_score = 47
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rule_id = "c85eb82c-d2c8-485c-a36f-534f914b7663"
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severity = "medium"
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tags = ["Elastic", "Host", "macOS", "Linux", "Threat Detection", "Discovery"]
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timestamp_override = "event.ingested"
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type = "eql"
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query = '''
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process where event.type == "start" and
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process.name in ("grep", "egrep") and user.id != "0" and
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process.args : ("parallels*", "vmware*", "virtualbox*") and process.args : "Manufacturer*" and
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not process.parent.executable in ("/Applications/Docker.app/Contents/MacOS/Docker", "/usr/libexec/kcare/virt-what")
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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 = "T1082"
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name = "System Information Discovery"
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reference = "https://attack.mitre.org/techniques/T1082/"
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[rule.threat.tactic]
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id = "TA0007"
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name = "Discovery"
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reference = "https://attack.mitre.org/tactics/TA0007/"
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