Jonhnathan
b4c84e8a40
* Update Tags * Bump updated date separately to be easy to revert if needed * Update resource_development_ml_linux_anomalous_compiler_activity.toml * Apply changes from the discussion * Update persistence_init_d_file_creation.toml * Update defense_evasion_timestomp_sysmon.toml * Update defense_evasion_application_removed_from_blocklist_in_google_workspace.toml * Update missing Tactic tags * Update unit tests to match new tags * Add missing IG tags * Delete okta_threat_detected_by_okta_threatinsight.toml * Update command_and_control_google_drive_malicious_file_download.toml * Update persistence_rc_script_creation.toml * Mass bump * Update persistence_shell_activity_by_web_server.toml * . --------- Co-authored-by: Mika Ayenson <Mika.ayenson@elastic.co> Co-authored-by: Mika Ayenson <Mikaayenson@users.noreply.github.com>
52 lines
1.5 KiB
TOML
52 lines
1.5 KiB
TOML
[metadata]
|
|
creation_date = "2020/11/25"
|
|
integration = ["endpoint"]
|
|
maturity = "production"
|
|
min_stack_comments = "New fields added: required_fields, related_integrations, setup"
|
|
min_stack_version = "8.3.0"
|
|
updated_date = "2023/06/22"
|
|
|
|
[rule]
|
|
author = ["Elastic"]
|
|
description = """
|
|
Identifies registry write modifications to hide an encoded portable executable. This could be indicative of adversary
|
|
defense evasion by avoiding the storing of malicious content directly on disk.
|
|
"""
|
|
from = "now-9m"
|
|
index = ["logs-endpoint.events.*", "endgame-*"]
|
|
language = "eql"
|
|
license = "Elastic License v2"
|
|
name = "Encoded Executable Stored in the Registry"
|
|
risk_score = 47
|
|
rule_id = "93c1ce76-494c-4f01-8167-35edfb52f7b1"
|
|
severity = "medium"
|
|
tags = ["Domain: Endpoint", "OS: Windows", "Use Case: Threat Detection", "Tactic: Defense Evasion", "Data Source: Elastic Endgame"]
|
|
timestamp_override = "event.ingested"
|
|
type = "eql"
|
|
|
|
query = '''
|
|
registry where host.os.type == "windows" and
|
|
/* update here with encoding combinations */
|
|
registry.data.strings : "TVqQAAMAAAAEAAAA*"
|
|
'''
|
|
|
|
|
|
[[rule.threat]]
|
|
framework = "MITRE ATT&CK"
|
|
[[rule.threat.technique]]
|
|
id = "T1112"
|
|
name = "Modify Registry"
|
|
reference = "https://attack.mitre.org/techniques/T1112/"
|
|
|
|
[[rule.threat.technique]]
|
|
id = "T1140"
|
|
name = "Deobfuscate/Decode Files or Information"
|
|
reference = "https://attack.mitre.org/techniques/T1140/"
|
|
|
|
|
|
[rule.threat.tactic]
|
|
id = "TA0005"
|
|
name = "Defense Evasion"
|
|
reference = "https://attack.mitre.org/tactics/TA0005/"
|
|
|