Jonhnathan
89 lines
2.9 KiB
TOML
89 lines
2.9 KiB
TOML
[metadata]
|
|
creation_date = "2023/09/21"
|
|
integration = ["endpoint"]
|
|
maturity = "production"
|
|
min_stack_comments = "New fields added: required_fields, related_integrations, setup"
|
|
min_stack_version = "8.3.0"
|
|
updated_date = "2023/09/21"
|
|
bypass_bbr_timing = true
|
|
|
|
[rule]
|
|
author = ["Elastic"]
|
|
description = """
|
|
Identifies the creation or modification of a medium size memory dump file which can indicate an attempt to access
|
|
credentials from a process memory.
|
|
"""
|
|
from = "now-9m"
|
|
index = ["logs-endpoint.events.*"]
|
|
language = "eql"
|
|
license = "Elastic License v2"
|
|
name = "Potential Credential Access via Memory Dump File Creation"
|
|
risk_score = 21
|
|
rule_id = "e707a7be-cc52-41ac-8ab3-d34b38c20005"
|
|
severity = "low"
|
|
tags = ["Domain: Endpoint", "OS: Windows", "Use Case: Threat Detection", "Tactic: Credential Access", "Data Source: Elastic Defend", "Rule Type: BBR"]
|
|
timestamp_override = "event.ingested"
|
|
building_block_type = "default"
|
|
type = "eql"
|
|
|
|
query = '''
|
|
file where host.os.type == "windows" and event.type == "creation" and
|
|
|
|
/* MDMP header */
|
|
file.Ext.header_bytes : "4d444d50*" and file.size >= 30000 and
|
|
not
|
|
|
|
(
|
|
(
|
|
process.executable : (
|
|
"?:\\Windows\\System32\\WerFault.exe",
|
|
"?:\\Windows\\SysWOW64\\WerFault.exe",
|
|
"?:\\Windows\\System32\\Wermgr.exe",
|
|
"?:\\Windows\\SysWOW64\\Wermgr.exe",
|
|
"?:\\Windows\\System32\\WerFaultSecure.exe",
|
|
"?:\\Windows\\System32\\WUDFHost.exe",
|
|
"?:\\Windows\\System32\\Taskmgr.exe",
|
|
"?:\\Windows\\SysWOW64\\Taskmgr.exe",
|
|
"?:\\Program Files\\*.exe",
|
|
"?:\\Program Files (x86)\\*.exe",
|
|
"?:\\Windows\\SystemApps\\*.exe",
|
|
"?:\\Users\\*\\AppData\\Roaming\\Zoom\\bin\\zCrashReport64.exe"
|
|
) and process.code_signature.trusted == true
|
|
) or
|
|
(
|
|
file.path : (
|
|
"?:\\ProgramData\\Microsoft\\Windows\\WER\\*",
|
|
"?:\\ProgramData\\Microsoft\\WDF\\*",
|
|
"?:\\ProgramData\\Alteryx\\ErrorLogs\\*",
|
|
"?:\\ProgramData\\Goodix\\*",
|
|
"?:\\Windows\\system32\\config\\systemprofile\\AppData\\Local\\CrashDumps\\*",
|
|
"?:\\Users\\*\\AppData\\Roaming\\Zoom\\logs\\zoomcrash*",
|
|
"?:\\Users\\*\\AppData\\*\\Crashpad\\*",
|
|
"?:\\Users\\*\\AppData\\*\\crashpaddb\\*",
|
|
"?:\\Users\\*\\AppData\\*\\HungReports\\*",
|
|
"?:\\Users\\*\\AppData\\*\\CrashDumps\\*",
|
|
"?:\\Users\\*\\AppData\\*\\NativeCrashReporting\\*"
|
|
) and (process.code_signature.trusted == true or process.executable == null)
|
|
)
|
|
)
|
|
'''
|
|
|
|
|
|
[[rule.threat]]
|
|
framework = "MITRE ATT&CK"
|
|
[[rule.threat.technique]]
|
|
id = "T1003"
|
|
name = "OS Credential Dumping"
|
|
reference = "https://attack.mitre.org/techniques/T1003/"
|
|
[[rule.threat.technique.subtechnique]]
|
|
id = "T1003.001"
|
|
name = "LSASS Memory"
|
|
reference = "https://attack.mitre.org/techniques/T1003/001/"
|
|
|
|
|
|
|
|
[rule.threat.tactic]
|
|
id = "TA0006"
|
|
name = "Credential Access"
|
|
reference = "https://attack.mitre.org/tactics/TA0006/"
|