Windows Filtering Platform Blocked Connection From EDR Agent Binary

 1title: Windows Filtering Platform Blocked Connection From EDR Agent Binary
 2id: bacf58c6-e199-4040-a94f-95dea0f1e45a
 3status: experimental
 4description: |
 5    Detects a Windows Filtering Platform (WFP) blocked connection event involving common Endpoint Detection and Response (EDR) agents.
 6    Adversaries may use WFP filters to prevent Endpoint Detection and Response (EDR) agents from reporting security events.    
 7references:
 8    - https://github.com/netero1010/EDRSilencer
 9    - https://github.com/amjcyber/EDRNoiseMaker
10    - https://ghoulsec.medium.com/misc-series-4-forensics-on-edrsilencer-events-428b20b3f983
11author: '@gott_cyber'
12date: 2024-01-08
13tags:
14    - attack.defense-evasion
15    - attack.t1562
16logsource:
17    product: windows
18    service: security
19    definition: 'Requirements: Audit Filtering Platform Connection needs to be enabled'
20detection:
21    selection:
22        EventID: 5157
23        Application|endswith:
24            - '\AmSvc.exe' # Cybereason
25            - '\cb.exe' # Carbon Black EDR
26            - '\CETASvc.exe' # TrendMicro Apex One
27            - '\CNTAoSMgr.exe' # TrendMicro Apex One
28            - '\CrAmTray.exe' # Cybereason
29            - '\CrsSvc.exe' # Cybereason
30            - '\CSFalconContainer.exe' # CrowdStrike Falcon
31            - '\CSFalconService.exe' # CrowdStrike Falcon
32            - '\CybereasonAV.exe' # Cybereason
33            - '\CylanceSvc.exe' # Cylance
34            - '\cyserver.exe' # Palo Alto Networks Traps/Cortex XDR
35            - '\CyveraService.exe' # Palo Alto Networks Traps/Cortex XDR
36            - '\CyvrFsFlt.exe' # Palo Alto Networks Traps/Cortex XDR
37            - '\EIConnector.exe' # ESET Inspect
38            - '\elastic-agent.exe' # Elastic EDR
39            - '\elastic-endpoint.exe' # Elastic EDR
40            - '\EndpointBasecamp.exe' # TrendMicro Apex One
41            - '\ExecutionPreventionSvc.exe' # Cybereason
42            - '\filebeat.exe' # Elastic EDR
43            - '\fortiedr.exe' # FortiEDR
44            - '\hmpalert.exe' # Sophos EDR
45            - '\hurukai.exe' # Harfanglab EDR
46            - '\LogProcessorService.exe' # SentinelOne
47            - '\mcsagent.exe' # Sophos EDR
48            - '\mcsclient.exe' # Sophos EDR
49            - '\MsMpEng.exe' # Microsoft Defender for Endpoint and Microsoft Defender Antivirus
50            - '\MsSense.exe' # Microsoft Defender for Endpoint and Microsoft Defender Antivirus
51            - '\Ntrtscan.exe' # TrendMicro Apex One
52            - '\PccNTMon.exe' # TrendMicro Apex One
53            - '\QualysAgent.exe' # Qualys EDR
54            - '\RepMgr.exe' # Carbon Black Cloud
55            - '\RepUtils.exe' # Carbon Black Cloud
56            - '\RepUx.exe' # Carbon Black Cloud
57            - '\RepWAV.exe' # Carbon Black Cloud
58            - '\RepWSC.exe' # Carbon Black Cloud
59            - '\sedservice.exe' # Sophos EDR
60            - '\SenseCncProxy.exe' # Microsoft Defender for Endpoint and Microsoft Defender Antivirus
61            - '\SenseIR.exe' # Microsoft Defender for Endpoint and Microsoft Defender Antivirus
62            - '\SenseNdr.exe' # Microsoft Defender for Endpoint and Microsoft Defender Antivirus
63            - '\SenseSampleUploader.exe' # Microsoft Defender for Endpoint and Microsoft Defender Antivirus
64            - '\SentinelAgent.exe' # SentinelOne
65            - '\SentinelAgentWorker.exe' # SentinelOne
66            - '\SentinelBrowserNativeHost.exe' # SentinelOne
67            - '\SentinelHelperService.exe' # SentinelOne
68            - '\SentinelServiceHost.exe' # SentinelOne
69            - '\SentinelStaticEngine.exe' # SentinelOne
70            - '\SentinelStaticEngineScanner.exe' # SentinelOne
71            - '\sfc.exe' # Cisco Secure Endpoint (Formerly Cisco AMP)
72            - '\sophos ui.exe' # Sophos EDR
73            - '\sophosfilescanner.exe' # Sophos EDR
74            - '\sophosfs.exe' # Sophos EDR
75            - '\sophoshealth.exe' # Sophos EDR
76            - '\sophosips.exe' # Sophos EDR
77            - '\sophosLivequeryservice.exe' # Sophos EDR
78            - '\sophosnetfilter.exe' # Sophos EDR
79            - '\sophosntpservice.exe' # Sophos EDR
80            - '\sophososquery.exe' # Sophos EDR
81            - '\sspservice.exe' # Sophos EDR
82            - '\TaniumClient.exe' # Tanium
83            - '\TaniumCX.exe' # Tanium
84            - '\TaniumDetectEngine.exe' # Tanium
85            - '\TMBMSRV.exe' # TrendMicro Apex One
86            - '\TmCCSF.exe' # TrendMicro Apex One
87            - '\TmListen.exe' # TrendMicro Apex One
88            - '\TmWSCSvc.exe' # TrendMicro Apex One
89            - '\Traps.exe' # Palo Alto Networks Traps/Cortex XDR
90            - '\winlogbeat.exe' # Elastic EDR
91            - '\WSCommunicator.exe' # TrendMicro Apex One
92            - '\xagt.exe' # Trellix EDR
93    condition: selection
94falsepositives:
95    - Unlikely
96level: high