[New Rule] Virtual Machine Fingerprinting via Grep (#1510)

* [New Rule] Virtual Machine Fingerprinting via Grep * format * Update rules/cross-platform/discovery_virtual_machine_fingerprinting_grep.toml Co-authored-by: Justin Ibarra <brokensound77@users.noreply.github.com> * Update rules/cross-platform/discovery_virtual_machine_fingerprinting_grep.toml Co-authored-by: Justin Ibarra <brokensound77@users.noreply.github.com> * added reference url Co-authored-by: Justin Ibarra <brokensound77@users.noreply.github.com> (cherry picked from commit 76a0224f60)
2021-09-30 14:40:05 -04:00
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commit 1c70f69b2f
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+[metadata]
+creation_date = "2021/09/29"
+maturity = "production"
+updated_date = "2021/09/29"
+
+[rule]
+author = ["Elastic"]
+description = """
+An adversary may attempt to get detailed information about the operating system and hardware. This rule identifies
+common locations used to discover virtual machine hardware by a non-root user. This technique has been used by the Pupy
+RAT and other malware.
+"""
+false_positives = [
+    """
+    Certain tools or automated software may enumerate hardware information. These tools can be exempted via user name or
+    process arguments to eliminate potential noise.
+    """,
+]
+from = "now-9m"
+index = ["auditbeat-*", "logs-endpoint.events.*"]
+language = "eql"
+license = "Elastic License v2"
+name = "Virtual Machine Fingerprinting via Grep"
+references = ["https://objective-see.com/blog/blog_0x4F.html"]
+risk_score = 47
+rule_id = "c85eb82c-d2c8-485c-a36f-534f914b7663"
+severity = "medium"
+tags = ["Elastic", "Host", "macOS", "Linux", "Threat Detection", "Discovery"]
+timestamp_override = "event.ingested"
+type = "eql"
+
+query = '''
+process where event.type == "start" and
+ process.name in ("grep", "egrep") and user.id != "0" and
+ process.args : ("parallels*", "vmware*", "virtualbox*") and process.args : "Manufacturer*" and 
+ not process.parent.executable in ("/Applications/Docker.app/Contents/MacOS/Docker", "/usr/libexec/kcare/virt-what")
+'''
+
+
+[[rule.threat]]
+framework = "MITRE ATT&CK"
+[[rule.threat.technique]]
+id = "T1082"
+name = "System Information Discovery"
+reference = "https://attack.mitre.org/techniques/T1082/"
+
+
+[rule.threat.tactic]
+id = "TA0007"
+name = "Discovery"
+reference = "https://attack.mitre.org/tactics/TA0007/"