[New Rule] Persistence via Hidden Run Key ValName (#534)

* [New Rule] Persistence via Hidden Run Key Detected * added strings length condition * added description * Update persistence_via_hidden_run_key_valuename.toml * Update rules/windows/persistence_via_hidden_run_key_valuename.toml Co-authored-by: Brent Murphy <56412096+bm11100@users.noreply.github.com> * commented length for stability no logic impact * eql syntax * ecs_version Co-authored-by: Brent Murphy <56412096+bm11100@users.noreply.github.com> Co-authored-by: David French <56409778+threat-punter@users.noreply.github.com>
2020-12-08 16:38:23 +01:00
parent 929277486d
commit 7d7d010509
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+[metadata]
+creation_date = "2020/11/15"
+maturity = "production"
+updated_date = "2020/11/15"
+
+[rule]
+author = ["Elastic"]
+description = """
+Identifies a persistence mechanism that utilizes the NtSetValueKey native API to create a hidden (null
+terminated) registry key. An adversary may use this method to hide from system utilities such as
+the Registry Editor (regedit).
+"""
+from = "now-9m"
+index = ["logs-endpoint.events.*", "winlogbeat-*"]
+language = "eql"
+license = "Elastic License"
+name = "Persistence via Hidden Run Key Detected"
+references = [
+    "https://github.com/outflanknl/SharpHide",
+    "https://github.com/ewhitehats/InvisiblePersistence/blob/master/InvisibleRegValues_Whitepaper.pdf",
+]
+risk_score = 73
+rule_id = "a9b05c3b-b304-4bf9-970d-acdfaef2944c"
+severity = "high"
+tags = ["Elastic", "Host", "Windows", "Threat Detection", "Persistence"]
+type = "eql"
+
+query = '''
+/* Registry Path ends with backslash */
+registry where /* length(registry.data.strings) > 0 and */
+ registry.path : ("HKEY_USERS\\*\\Software\\Microsoft\\Windows\\CurrentVersion\\Run\\", 
+                  "HKLM\\Software\\Microsoft\\Windows\\CurrentVersion\\Run\\", 
+                  "HKLM\\Software\\WOW6432Node\\Microsoft\\Windows\\CurrentVersion\\Run\\", 
+                  "HKEY_USERS\\*\\Software\\Microsoft\\Windows\\CurrentVersion\\Policies\\Explorer\\Run\\", 
+                  "HKLM\\Software\\Microsoft\\Windows\\CurrentVersion\\Policies\\Explorer\\Run\\")
+'''
+
+
+[[rule.threat]]
+framework = "MITRE ATT&CK"
+[[rule.threat.technique]]
+id = "T1060"
+name = "Registry Run Keys / Startup Folder"
+reference = "https://attack.mitre.org/techniques/T1060/"
+
+
+[rule.threat.tactic]
+id = "TA0003"
+name = "Persistence"
+reference = "https://attack.mitre.org/tactics/TA0003/"