Detection Details - DeFender X

Critical

Detection ID
Detection Name
Description
Hostname
User: dokji
Tactic: Credential Access
Technique: OS Credential Dumping
Objective: Gain Access
Event Time: 2025-12-22 08:12:14
Received: 2025-12-22 10:49:23

Process Information

File Name

reg.exe

File Path

\Device\HarddiskVolume3\Windows\System32\reg.exe

Command Line

reg  save HKLM\SYSTEM C:\Users\dokji\AppData\Local\Temp\sys.hiv

Process ID

35451574842

Parent PID

35449274571

SHA256

ef37663b44ac66920c6f33694deea01acb78ae3f3012884819373fa04c3eb5f0 VT

MD5

f6e3559ddddccc843a12cfd50178c554

Disposition

2048
Prevention, process was blocked from execution.

Raw JSON Data

{
  "metadata": {
    "customerIDString": "84393bf974fd44bda943a25a6a7bc27f",
    "offset": 158085,
    "eventType": "EppDetectionSummaryEvent",
    "eventCreationTime": 1766358734000,
    "version": "1.0"
  },
  "event": {
    "ProcessStartTime": 1766358672,
    "ProcessEndTime": 1766358672,
    "ProcessId": 35451574842,
    "ParentProcessId": 35449274571,
    "Hostname": "TEAHEE",
    "UserName": "dokji",
    "Name": "Credential Theft",
    "Description": "A process saved the Security Account Manager SAM or SYSTEM hive to disk. If this is unexpected, it likely indicates credential theft. Investigate the process tree.",
    "Severity": 90,
    "SeverityName": "Critical",
    "FileName": "reg.exe",
    "FilePath": "\\Device\\HarddiskVolume3\\Windows\\System32\\reg.exe",
    "CommandLine": "reg  save HKLM\\SYSTEM C:\\Users\\dokji\\AppData\\Local\\Temp\\sys.hiv",
    "SHA256String": "ef37663b44ac66920c6f33694deea01acb78ae3f3012884819373fa04c3eb5f0",
    "MD5String": "f6e3559ddddccc843a12cfd50178c554",
    "SHA1String": "0000000000000000000000000000000000000000",
    "LogonDomain": "TEAHEE",
    "FalconHostLink": "https://falcon.us-2.crowdstrike.com/activity-v2/detections/84393bf974fd44bda943a25a6a7bc27f:ind:47186ef241ea495885522e5d4930eda3:35451574842-10117-11288592?_cid=g04000x7oomvbbtvcerklzeap3llo7ue",
    "AgentId": "47186ef241ea495885522e5d4930eda3",
    "IOCType": "hash_sha256",
    "IOCValue": "ef37663b44ac66920c6f33694deea01acb78ae3f3012884819373fa04c3eb5f0",
    "CompositeId": "84393bf974fd44bda943a25a6a7bc27f:ind:47186ef241ea495885522e5d4930eda3:35451574842-10117-11288592",
    "LocalIP": "172.27.1.26",
    "MACAddress": "e8-84-a5-3f-53-7c",
    "Tactic": "Credential Access",
    "Technique": "OS Credential Dumping",
    "Objective": "Gain Access",
    "PatternDispositionDescription": "Prevention, process was blocked from execution.",
    "PatternDispositionValue": 2048,
    "PatternDispositionFlags": {
      "Indicator": false,
      "Detect": false,
      "InddetMask": false,
      "SensorOnly": false,
      "Rooting": false,
      "KillProcess": false,
      "KillSubProcess": false,
      "QuarantineMachine": false,
      "QuarantineFile": false,
      "PolicyDisabled": false,
      "KillParent": false,
      "OperationBlocked": false,
      "ProcessBlocked": true,
      "RegistryOperationBlocked": false,
      "CriticalProcessDisabled": false,
      "BootupSafeguardEnabled": false,
      "FsOperationBlocked": false,
      "HandleOperationDowngraded": false,
      "KillActionFailed": false,
      "BlockingUnsupportedOrDisabled": false,
      "SuspendProcess": false,
      "SuspendParent": false,
      "ContainmentFileSystem": false
    },
    "ParentImageFileName": "cmd.exe",
    "ParentCommandLine": "\u0022cmd.exe\u0022 /c reg save HKLM\\SYSTEM C:\\Users\\dokji\\AppData\\Local\\Temp\\sys.hiv",
    "GrandParentImageFileName": "MegaGenerator.exe",
    "GrandParentCommandLine": "\u0022C:\\app\\cortex-xdr-siem-test\\xdr_tools\\MegaGenerator\\bin\\publish\\MegaGenerator.exe\u0022  --once --scenarios 15 ",
    "HostGroups": "4f5aa5f1cdc6441982cf5c58e4b5d75a",
    "AssociatedFile": "\\Device\\HarddiskVolume3\\Windows\\System32\\reg.exe",
    "PatternId": 10117,
    "SourceVendors": "CrowdStrike",
    "SourceProducts": "Falcon Insight",
    "DataDomains": "Endpoint",
    "AggregateId": "aggind:47186ef241ea495885522e5d4930eda3:9259434287",
    "Type": "ldt",
    "ParentImageFilePath": "\\Device\\HarddiskVolume3\\Windows\\System32\\cmd.exe",
    "GrandParentImageFilePath": "\\Device\\HarddiskVolume3\\app\\cortex-xdr-siem-test\\xdr_tools\\MegaGenerator\\bin\\publish\\MegaGenerator.exe",
    "LocalIPv6": "",
    "PlatformId": "0",
    "PlatformName": "Windows",
    "MitreAttack": [
      {
        "Tactic": "Credential Access",
        "TacticID": "TA0006",
        "Technique": "OS Credential Dumping",
        "TechniqueID": "T1003",
        "PatternID": 10117
      }
    ],
    "CloudIndicator": false,
    "RiskScore": 57
  }
}