IMPORTANT: No additional bug fixes or documentation updates
will be released for this version. For the latest information, see the
current release documentation.
Potential Evasion via Windows Filtering Platform
editPotential Evasion via Windows Filtering Platform
editIdentifies multiple Windows Filtering Platform block events and where the process name is related to an endpoint security software. Adversaries may add malicious WFP rules to prevent Endpoint security from sending telemetry.
Rule type: eql
Rule indices:
- winlogbeat-*
- logs-windows.network-*
- logs-system.security-*
Severity: medium
Risk score: 47
Runs every: 5m
Searches indices from: now-9m (Date Math format, see also Additional look-back time
)
Maximum alerts per execution: 100
References:
- https://github.com/dsnezhkov/shutter/tree/main
- https://github.com/netero1010/EDRSilencer/tree/main
- https://www.mdsec.co.uk/2023/09/nighthawk-0-2-6-three-wise-monkeys/
- https://learn.microsoft.com/en-us/windows/security/threat-protection/auditing/event-5157
- https://learn.microsoft.com/en-us/windows/security/threat-protection/auditing/event-5152
Tags:
- Domain: Endpoint
- OS: Windows
- Use Case: Threat Detection
- Tactic: Defense Evasion
- Data Source: Elastic Defend
Version: 3
Rule authors:
- Elastic
Rule license: Elastic License v2
Setup
editSetup
The Filtering Platform Connection logging policy must be configured for (Success, Failure). Steps to implement the logging policy with Advanced Audit Configuration:
Computer Configuration > Policies > Windows Settings > Security Settings > Advanced Audit Policies Configuration > Audit Policies > Object Access > Filtering Platform Connection (Success,Failure)
Rule query
editsequence by winlog.computer_name with maxspan=1m [network where host.os.type == "windows" and event.action : ("windows-firewall-packet-block", "windows-firewall-packet-drop") and process.name : ( "bdagent.exe", "bdreinit.exe", "pdscan.exe", "pdiface.exe", "BDSubWiz.exe", "ProductAgentService.exe", "ProductAgentUI.exe", "WatchDog.exe", "CarbonBlackClientSetup.exe", "TrGUI.exe", "TracCAPI.exe", "cpmsi_tool.exe", "trac.exe", "vna_install64.exe", "vna_utils.exe", "TracSrvWrapper.exe", "vsmon.exe", "p95tray.exe", "CybereasonRansomFreeServiceHost.exe", "CrAmTray.exe", "minionhost.exe", "CybereasonSensor.exe", "CylanceUI.exe", "CylanceProtectSetup.exe", "cylancesvc.exe", "cyupdate.exe", "elastic-agent.exe", "elastic-endpoint.exe", "egui.exe", "minodlogin.exe", "emu-rep.exe", "emu_install.exe", "emu-cci.exe", "emu-gui.exe", "emu-uninstall.exe", "ndep.exe", "spike.exe", "ecls.exe", "ecmd.exe", "ecomserver.exe", "eeclnt.exe", "eh64.exe", "EHttpSrv.exe", "xagt.exe", "collectoragent.exe", "FSAEConfig.exe", "uninstalldcagent.exe", "rmon.exe", "fccomint.exe", "fclanguageselector.exe", "fortifw.exe", "fcreg.exe", "fortitray.exe", "fcappdb.exe", "fcwizard.exe", "submitv.exe", "av_task.exe", "fortiwf.exe", "fortiwadbd.exe", "fcauth.exe", "fcdblog.exe", "fcmgr.exe", "fortiwad.exe", "fortiproxy.exe", "fortiscand.exe", "fortivpnst.exe", "ipsec.exe", "fcwscd7.exe", "fcasc.exe", "fchelper.exe", "forticlient.exe","fcwsc.exe", "FortiClient.exe", "fmon.exe", "FSSOMA.exe", "FCVbltScan.exe", "FortiESNAC.exe", "EPCUserAvatar.exe", "FortiAvatar.exe", "FortiClient_Diagnostic_Tool.exe", "FortiSSLVPNdaemon.exe", "avp.exe", "FCConfig.exe", "avpsus.exe", "klnagent.exe", "klnsacwsrv.exe", "kl_platf.exe", "stpass.exe", "klnagwds.exe", "mbae.exe", "mbae64.exe", "mbae-svc.exe", "mbae-uninstaller.exe", "mbaeLoader32.exe", "mbaeloader64.exe", "mbam-dor.exe", "mbamgui.exe", "mbamservice.exe", "mbamtrayctrl.exe", "mbampt.exe", "mbamscheduler.exe", "Coreinst.exe", "mbae-setup.exe", "mcupdate.exe", "ProtectedModuleHost.exe", "ESConfigTool.exe", "FWInstCheck.exe", "FwWindowsFirewallHandler.exe", "mfeesp.exe", "mfefw.exe", "mfeProvisionModeUtility.exe", "mfetp.exe", "avpui.exe", "WscAVExe.exe", "mcshield.exe", "McChHost.exe", "mfewc.exe", "mfewch.exe", "mfewcui.exe", "fwinfo.exe", "mfecanary.exe", "mfefire.exe", "mfehidin.exe", "mfemms.exe", "mfevtps.exe", "mmsinfo.exe", "vtpinfo.exe", "MarSetup.exe", "mctray.exe", "masvc.exe", "macmnsvc.exe", "McAPExe.exe", "McPvTray.exe", "mcods.exe", "mcuicnt.exe", "mcuihost.exe", "xtray.exe", "McpService.exe", "epefprtrainer.exe", "mfeffcoreservice.exe", "MfeEpeSvc.exe", "qualysagent.exe", "QualysProxy.exe", "QualysAgentUI.exe", "SVRTgui.exe", "SVRTcli.exe", "SVRTcli.exe", "SVRTgui.exe", "SCTCleanupService.exe", "SVRTservice.exe", "native.exe", "SCTBootTasks.exe", "ALMon.exe", "SAA.exe", "SUMService.exe", "ssp.exe", "SCFService.exe", "SCFManager.exe", "spa.exe", "cabarc.exe", "sargui.exe", "sntpservice.exe", "McsClient.exe", "McsAgent.exe", "McsHeartbeat.exe", "SAVAdminService.exe", "sav32cli.exe", "ForceUpdateAlongSideSGN.exe", "SAVCleanupService.exe", "SavMain.exe", "SavProgress.exe", "SavProxy.exe", "SavService.exe", "swc_service.exe", "swi_di.exe", "swi_service.exe", "swi_filter.exe", "ALUpdate.exe", "SophosUpdate.exe", "ALsvc.exe", "SophosAlert.exe", "osCheck.exe", "N360Downloader.exe", "InstWrap.exe", "symbos.exe", "nss.exe", "symcorpui.exe", "isPwdSvc.exe", "ccsvchst.exe", "ntrmv.exe", "pccntmon.exe", "AosUImanager.exe", "NTRTScan.exe", "TMAS_OL.exe", "TMAS_OLImp.exe", "TMAS_OLSentry.exe", "ufnavi.exe", "Clnrbin.exe", "vizorhtmldialog.exe", "pwmConsole.exe", "PwmSvc.exe", "coreServiceShell.exe", "ds_agent.exe", "SfCtlCom.exe", "MBAMHelper.exe", "cb.exe", "smc.exe", "tda.exe", "xagtnotif.exe", "ekrn.exe", "dsa.exe", "Notifier.exe", "rphcp.exe", "lc_sensor.exe", "CSFalconService.exe", "CSFalconController.exe", "SenseSampleUploader.exe", "windefend.exe", "MSASCui.exe", "MSASCuiL.exe", "msmpeng.exe", "msmpsvc.exe", "MsSense.exe", "esensor.exe", "sentinelone.exe", "tmccsf.exe", "csfalconcontainer.exe", "sensecncproxy.exe", "splunk.exe", "sysmon.exe", "sysmon64.exe", "taniumclient.exe" )] with runs=5
Framework: MITRE ATT&CKTM
-
Tactic:
- Name: Defense Evasion
- ID: TA0005
- Reference URL: https://attack.mitre.org/tactics/TA0005/
-
Technique:
- Name: Impair Defenses
- ID: T1562
- Reference URL: https://attack.mitre.org/techniques/T1562/
-
Sub-technique:
- Name: Disable or Modify System Firewall
- ID: T1562.004
- Reference URL: https://attack.mitre.org/techniques/T1562/004/