Execution from Unusual Directory - Command Line

Last updated 9 days ago on 2025-05-05
Created 5 years ago on 2020-10-30

About

Identifies process execution from suspicious default Windows directories. This may be abused by adversaries to hide malware in trusted paths.
Tags
Domain: EndpointOS: WindowsUse Case: Threat DetectionTactic: ExecutionTactic: Defense EvasionData Source: Elastic EndgameData Source: Elastic DefendData Source: Windows Security Event LogsData Source: Microsoft Defender for EndpointData Source: SysmonData Source: SentinelOneLanguage: eql
Severity
medium
Risk Score
47
MITRE ATT&CK™

Execution (TA0002)(opens in a new tab or window)

Defense Evasion (TA0005)(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-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)

Query
process where host.os.type == "windows" and event.type == "start" and
  process.name : ("wscript.exe",
                  "cscript.exe",
                  "rundll32.exe",
                  "regsvr32.exe",
                  "cmstp.exe",
                  "RegAsm.exe",
                  "installutil.exe",
                  "mshta.exe",
                  "RegSvcs.exe",
                  "powershell.exe",
                  "pwsh.exe",
                  "cmd.exe") and

  /* add suspicious execution paths here */
  process.args : ("C:\\PerfLogs\\*",
                  "C:\\Users\\Public\\*",
                  "C:\\Windows\\Tasks\\*",
                  "C:\\Intel\\*",
                  "C:\\AMD\\Temp\\*",
                  "C:\\Windows\\AppReadiness\\*",
                  "C:\\Windows\\ServiceState\\*",
                  "C:\\Windows\\security\\*",
                  "C:\\Windows\\IdentityCRL\\*",
                  "C:\\Windows\\Branding\\*",
                  "C:\\Windows\\csc\\*",
                  "C:\\Windows\\DigitalLocker\\*",
                  "C:\\Windows\\en-US\\*",
                  "C:\\Windows\\wlansvc\\*",
                  "C:\\Windows\\Prefetch\\*",
                  "C:\\Windows\\Fonts\\*",
                  "C:\\Windows\\diagnostics\\*",
                  "C:\\Windows\\TAPI\\*",
                  "C:\\Windows\\INF\\*",
                  "C:\\Windows\\System32\\Speech\\*",
                  "C:\\windows\\tracing\\*",
                  "c:\\windows\\IME\\*",
                  "c:\\Windows\\Performance\\*",
                  "c:\\windows\\intel\\*",
                  "c:\\windows\\ms\\*",
                  "C:\\Windows\\dot3svc\\*",
                  "C:\\Windows\\panther\\*",
                  "C:\\Windows\\RemotePackages\\*",
                  "C:\\Windows\\OCR\\*",
                  "C:\\Windows\\appcompat\\*",
                  "C:\\Windows\\apppatch\\*",
                  "C:\\Windows\\addins\\*",
                  "C:\\Windows\\Setup\\*",
                  "C:\\Windows\\Help\\*",
                  "C:\\Windows\\SKB\\*",
                  "C:\\Windows\\Vss\\*",
                  "C:\\Windows\\servicing\\*",
                  "C:\\Windows\\CbsTemp\\*",
                  "C:\\Windows\\Logs\\*",
                  "C:\\Windows\\WaaS\\*",
                  "C:\\Windows\\twain_32\\*",
                  "C:\\Windows\\ShellExperiences\\*",
                  "C:\\Windows\\ShellComponents\\*",
                  "C:\\Windows\\PLA\\*",
                  "C:\\Windows\\Migration\\*",
                  "C:\\Windows\\debug\\*",
                  "C:\\Windows\\Cursors\\*",
                  "C:\\Windows\\Containers\\*",
                  "C:\\Windows\\Boot\\*",
                  "C:\\Windows\\bcastdvr\\*",
                  "C:\\Windows\\TextInput\\*",
                  "C:\\Windows\\security\\*",
                  "C:\\Windows\\schemas\\*",
                  "C:\\Windows\\SchCache\\*",
                  "C:\\Windows\\Resources\\*",
                  "C:\\Windows\\rescache\\*",
                  "C:\\Windows\\Provisioning\\*",
                  "C:\\Windows\\PrintDialog\\*",
                  "C:\\Windows\\PolicyDefinitions\\*",
                  "C:\\Windows\\media\\*",
                  "C:\\Windows\\Globalization\\*",
                  "C:\\Windows\\L2Schemas\\*",
                  "C:\\Windows\\LiveKernelReports\\*",
                  "C:\\Windows\\ModemLogs\\*",
                  "C:\\Windows\\ImmersiveControlPanel\\*",
                  "C:\\$Recycle.Bin\\*") and

  /* noisy FP patterns */

  not process.parent.executable : ("C:\\WINDOWS\\System32\\DriverStore\\FileRepository\\*\\igfxCUIService*.exe",
                                   "C:\\Windows\\System32\\spacedeskService.exe",
                                   "C:\\Program Files\\Dell\\SupportAssistAgent\\SRE\\SRE.exe") and
  not (process.name : "rundll32.exe" and
       process.args : ("uxtheme.dll,#64",
                       "PRINTUI.DLL,PrintUIEntry",
                       "?:\\Windows\\System32\\FirewallControlPanel.dll,ShowNotificationDialog",
                       "?:\\WINDOWS\\system32\\Speech\\SpeechUX\\sapi.cpl",
                       "?:\\Windows\\system32\\shell32.dll,OpenAs_RunDLL")) and

  not (process.name : "cscript.exe" and process.args : "?:\\WINDOWS\\system32\\calluxxprovider.vbs") and

  not (process.name : "cmd.exe" and process.args : "?:\\WINDOWS\\system32\\powercfg.exe" and process.args : "?:\\WINDOWS\\inf\\PowerPlan.log") and

  not (process.name : "regsvr32.exe" and process.args : "?:\\Windows\\Help\\OEM\\scripts\\checkmui.dll") and

  not (process.name : "cmd.exe" and
       process.parent.executable : ("?:\\Windows\\System32\\oobe\\windeploy.exe",
                                    "?:\\Program Files (x86)\\ossec-agent\\wazuh-agent.exe",
                                    "?:\\Windows\\System32\\igfxCUIService.exe",
                                    "?:\\Windows\\Temp\\IE*.tmp\\IE*-support\\ienrcore.exe"))

Install detection rules in Elastic Security

Detect Execution from Unusual Directory - Command Line 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).