Elastic Security Detection Rules

Suspicious Execution from INET Cache

Last updated 2 months ago on 2025-03-20
Created a year ago on 2024-02-14

About

Identifies the execution of a process with arguments pointing to the INetCache Folder. Adversaries may deliver malicious content via WININET during initial access.
Tags
Domain: EndpointOS: WindowsUse Case: Threat DetectionTactic: Initial AccessTactic: Command and ControlData Source: Elastic EndgameData Source: Elastic DefendData Source: Windows Security Event LogsData Source: Microsoft Defender for EndpointData Source: SysmonData Source: SentinelOneData Source: CrowdstrikeLanguage: eql
Severity
high
Risk Score
73
MITRE ATT&CK™

Initial Access (TA0001)(opens in a new tab or window)

↳ Phishing (T1566)(opens in a new tab or window)

Command and Control (TA0011)(opens in a new tab or window)

↳ Ingress Tool Transfer (T1105)(opens in a new tab or window)

License
Elastic License v2(opens in a new tab or window)

Definition

Rule Type
Event Correlation Rule
Integration Pack
Prebuilt Security Detection Rules
Index Patterns
endgame-*logs-crowdstrike.fdr*logs-endpoint.events.process-*logs-m365_defender.event-*logs-sentinel_one_cloud_funnel.*logs-system.security*logs-windows.forwarded*logs-windows.sysmon_operational-*winlogbeat-*
Related Integrations

endpoint(opens in a new tab or window)

windows(opens in a new tab or window)

system(opens in a new tab or window)

m365_defender(opens in a new tab or window)

sentinel_one_cloud_funnel(opens in a new tab or window)

crowdstrike(opens in a new tab or window)

Query
process where host.os.type == "windows" and event.type == "start" and
  process.parent.name : ("explorer.exe", "winrar.exe", "7zFM.exe", "Bandizip.exe") and
  (
    process.args : "?:\\Users\\*\\AppData\\Local\\Microsoft\\Windows\\INetCache\\IE\\*" or
    process.executable : (
      "?:\\Users\\*\\AppData\\Local\\Microsoft\\Windows\\INetCache\\IE\\*",
      "\\Device\\HarddiskVolume?\\Users\\*\\AppData\\Local\\Microsoft\\Windows\\INetCache\\IE\\*"
    )
  )

Install detection rules in Elastic Security

Detect Suspicious Execution from INET Cache in the Elastic Security detection engine by installing this rule into your Elastic Stack.

To setup this rule, check out the installation guide for Prebuilt Security Detection Rules(opens in a new tab or window).