shashank-elastic
49 lines
1.7 KiB
TOML
49 lines
1.7 KiB
TOML
[metadata]
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creation_date = "2023/04/11"
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integration = ["endpoint"]
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maturity = "production"
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min_stack_comments = "New fields added: required_fields, related_integrations, setup"
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min_stack_version = "8.5.0"
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updated_date = "2023/04/11"
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[rule]
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author = ["Elastic"]
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description = """
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Identifies instances where a process named 'grep', 'egrep', or 'pgrep' is started on a Linux system with arguments
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related to virtual machine (VM) files, such as "vmdk", "vmx", "vmxf", "vmsd", "vmsn", "vswp", "vmss", "nvram",
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or "vmem". These file extensions are associated with VM-related file formats, and their presence in grep command
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arguments may indicate that a threat actor is attempting to search for, analyze, or manipulate VM files on the system.
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"""
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from = "now-9m"
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index = ["logs-endpoint.events.*"]
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language = "eql"
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license = "Elastic License v2"
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name = "ESXI Discovery via Grep"
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references = [
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"https://www.bleepingcomputer.com/news/security/massive-esxiargs-ransomware-attack-targets-vmware-esxi-servers-worldwide/",
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]
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risk_score = 47
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rule_id = "2b662e21-dc6e-461e-b5cf-a6eb9b235ec4"
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severity = "medium"
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tags = ["Elastic", "Host", "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 host.os.type == "linux" and event.type == "start" and event.action == "exec" and
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process.name : ("grep", "egrep", "pgrep") and
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process.args : ("vmdk", "vmx", "vmxf", "vmsd", "vmsn", "vswp", "vmss", "nvram", "vmem")
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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 = "T1518"
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name = "Software Discovery"
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reference = "https://attack.mitre.org/techniques/T1518/"
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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/" |