Prestige ransomware IOCs Oct 2022

let sha256Hashes = dynamic(["5dd1ca0d471dee41eb3ea0b6ea117810f228354fc3b7b47400a812573d40d91d", "5fc44c7342b84f50f24758e39c8848b2f0991e8817ef5465844f5f2ff6085a57", "6cff0bbd62efe99f381e5cc0c4182b0fb7a9a34e4be9ce68ee6b0d0ea3eee39c"]);
let signames = dynamic(["Ransom:Win32/Prestige"]);
(union isfuzzy=true
(CommonSecurityLog
| where FileHash in (sha256Hashes)
| project TimeGenerated, Message, SourceUserID, FileHash, Type
| extend timestamp = TimeGenerated, Algorithm = "SHA256", AccountNTName = SourceUserID
),
(imFileEvent
| where TargetFileSHA256 has_any (sha256Hashes)
| extend AccountNT = ActorUsername, Computer = DvcHostname, IPAddress = SrcIpAddr, CommandLine = ActingProcessCommandLine, FileHash = TargetFileSHA256
| project Type, TimeGenerated, Computer, AccountNT, IPAddress, CommandLine, FileHash, Algorithm = "SHA256"
),
(Event
| where Source =~ "Microsoft-Windows-Sysmon"
| where EventID == 1
| extend EvData = parse_xml(EventData)
| extend EventDetail = EvData.DataItem.EventData.Data
| extend ProcessId = tolong(EventDetail.[3].["#text"]), Image = tostring(EventDetail.[4].["#text"]), CommandLine = tostring(EventDetail.[10].["#text"]), Hashes = tostring(EventDetail.[17].["#text"])
| extend Hashes = extract_all(@"(?P<key>\w+)=(?P<value>[a-zA-Z0-9]+)", dynamic(["key","value"]), Hashes)
| extend Hashes = column_ifexists("Hashes", dynamic(["", ""])), CommandLine = column_ifexists("CommandLine", "")
| mv-expand Hashes
| where Hashes[0] =~ "SHA256" and Hashes[1] has_any (sha256Hashes)  
| project TimeGenerated, EventDetail, UserName, Computer, Type, Source, ProcessId, Hashes, CommandLine, Image
| extend Type = strcat(Type, ": ", Source)
| extend AccountNT = UserName, InitiatingProcessId = ProcessId
| extend Process = tostring(split(Image, '\\', -1)[-1]), Algorithm = "SHA256", FileHash = tostring(Hashes[1]) 
),
(DeviceEvents
| where InitiatingProcessSHA256 has_any (sha256Hashes) or SHA256 has_any (sha256Hashes)
| project TimeGenerated, ActionType, DeviceId, DeviceName, InitiatingProcessAccountDomain, InitiatingProcessAccountName, InitiatingProcessCommandLine, InitiatingProcessFolderPath, InitiatingProcessId, InitiatingProcessParentFileName, InitiatingProcessFileName, InitiatingProcessSHA256, Type
| extend AccountNT = InitiatingProcessAccountName, Computer = DeviceName
| extend Algorithm = "SHA256", FileHash = tostring(InitiatingProcessSHA256), CommandLine = InitiatingProcessCommandLine, Image = InitiatingProcessFolderPath
),
(DeviceFileEvents
| where SHA256 has_any (sha256Hashes)
| project TimeGenerated, ActionType, DeviceId, DeviceName, InitiatingProcessAccountDomain, InitiatingProcessAccountName, InitiatingProcessCommandLine, InitiatingProcessFolderPath, InitiatingProcessId, InitiatingProcessParentFileName, InitiatingProcessFileName, InitiatingProcessSHA256, Type
| extend AccountNT = InitiatingProcessAccountName, Computer = DeviceName
| extend Algorithm = "SHA256", FileHash = tostring(InitiatingProcessSHA256), CommandLine = InitiatingProcessCommandLine, Image = InitiatingProcessFolderPath
),
(DeviceImageLoadEvents
| where SHA256 has_any (sha256Hashes)
| project TimeGenerated, ActionType, DeviceId, DeviceName, InitiatingProcessAccountDomain, InitiatingProcessAccountName, InitiatingProcessCommandLine, InitiatingProcessFolderPath, InitiatingProcessId, InitiatingProcessParentFileName, InitiatingProcessFileName, InitiatingProcessSHA256, Type
| extend AccountNT = InitiatingProcessAccountName, Computer = DeviceName
| extend Algorithm = "SHA256", FileHash = tostring(InitiatingProcessSHA256), CommandLine = InitiatingProcessCommandLine, Image = InitiatingProcessFolderPath
),
(SecurityAlert
| where ProductName == "Microsoft Defender Advanced Threat Protection"
| extend ThreatName = tostring(parse_json(ExtendedProperties).ThreatName)
| where isnotempty(ThreatName)
| where ThreatName has_any (signames)
| extend Computer = tostring(parse_json(Entities)[0].HostName)
)
)
| extend AccountNTName = tostring(split(AccountNT, "\\")[0]), AccountNTDomain = tostring(split(AccountNT, "\\")[1])
| extend HostName = tostring(split(Computer, ".")[0]), DomainIndex = toint(indexof(Computer, '.'))
| extend HostNameDomain = iff(DomainIndex != -1, substring(Computer, DomainIndex + 1), Computer)
| project-away DomainIndex

relevantTechniques:
- T1203
name: Prestige ransomware IOCs Oct 2022
requiredDataConnectors:
- dataTypes:
  - DeviceEvents
  - DeviceFileEvents
  - DeviceImageLoadEvents
  connectorId: MicrosoftThreatProtection
- dataTypes:
  - SecurityEvents
  connectorId: SecurityEvents
entityMappings:
- fieldMappings:
  - identifier: Algorithm
    columnName: Algorithm
  - identifier: Value
    columnName: FileHash
  entityType: FileHash
- fieldMappings:
  - identifier: ProcessId
    columnName: InitiatingProcessId
  - identifier: CommandLine
    columnName: CommandLine
  entityType: Process
- fieldMappings:
  - identifier: FullName
    columnName: AccountNT
  - identifier: Name
    columnName: AccountNTName
  - identifier: UPNSuffix
    columnName: AccountNTDomain
  entityType: Account
- fieldMappings:
  - identifier: FullName
    columnName: Computer
  - identifier: HostName
    columnName: HostName
  - identifier: NTDomain
    columnName: HostNameDomain
  entityType: Host
triggerThreshold: 0
id: bca9c877-2afc-4246-a26d-087ab1cdcd5f
tactics:
- Execution
version: 1.0.4
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Detections/MultipleDataSources/PrestigeRansomwareIOCsOct22.yaml
queryPeriod: 1d
kind: Scheduled
tags:
- Prestige
- Ransomware
metadata:
  categories:
    domains:
    - Security - Others
  author:
    name: Microsoft Security Research
  support:
    tier: Community
  source:
    kind: Community
queryFrequency: 1d
severity: High
description: |
    'This query looks for file hashes and AV signatures associated with Prestige ransomware payload.'
query: |
  let sha256Hashes = dynamic(["5dd1ca0d471dee41eb3ea0b6ea117810f228354fc3b7b47400a812573d40d91d", "5fc44c7342b84f50f24758e39c8848b2f0991e8817ef5465844f5f2ff6085a57", "6cff0bbd62efe99f381e5cc0c4182b0fb7a9a34e4be9ce68ee6b0d0ea3eee39c"]);
  let signames = dynamic(["Ransom:Win32/Prestige"]);
  (union isfuzzy=true
  (CommonSecurityLog
  | where FileHash in (sha256Hashes)
  | project TimeGenerated, Message, SourceUserID, FileHash, Type
  | extend timestamp = TimeGenerated, Algorithm = "SHA256", AccountNTName = SourceUserID
  ),
  (imFileEvent
  | where TargetFileSHA256 has_any (sha256Hashes)
  | extend AccountNT = ActorUsername, Computer = DvcHostname, IPAddress = SrcIpAddr, CommandLine = ActingProcessCommandLine, FileHash = TargetFileSHA256
  | project Type, TimeGenerated, Computer, AccountNT, IPAddress, CommandLine, FileHash, Algorithm = "SHA256"
  ),
  (Event
  | where Source =~ "Microsoft-Windows-Sysmon"
  | where EventID == 1
  | extend EvData = parse_xml(EventData)
  | extend EventDetail = EvData.DataItem.EventData.Data
  | extend ProcessId = tolong(EventDetail.[3].["#text"]), Image = tostring(EventDetail.[4].["#text"]), CommandLine = tostring(EventDetail.[10].["#text"]), Hashes = tostring(EventDetail.[17].["#text"])
  | extend Hashes = extract_all(@"(?P<key>\w+)=(?P<value>[a-zA-Z0-9]+)", dynamic(["key","value"]), Hashes)
  | extend Hashes = column_ifexists("Hashes", dynamic(["", ""])), CommandLine = column_ifexists("CommandLine", "")
  | mv-expand Hashes
  | where Hashes[0] =~ "SHA256" and Hashes[1] has_any (sha256Hashes)  
  | project TimeGenerated, EventDetail, UserName, Computer, Type, Source, ProcessId, Hashes, CommandLine, Image
  | extend Type = strcat(Type, ": ", Source)
  | extend AccountNT = UserName, InitiatingProcessId = ProcessId
  | extend Process = tostring(split(Image, '\\', -1)[-1]), Algorithm = "SHA256", FileHash = tostring(Hashes[1]) 
  ),
  (DeviceEvents
  | where InitiatingProcessSHA256 has_any (sha256Hashes) or SHA256 has_any (sha256Hashes)
  | project TimeGenerated, ActionType, DeviceId, DeviceName, InitiatingProcessAccountDomain, InitiatingProcessAccountName, InitiatingProcessCommandLine, InitiatingProcessFolderPath, InitiatingProcessId, InitiatingProcessParentFileName, InitiatingProcessFileName, InitiatingProcessSHA256, Type
  | extend AccountNT = InitiatingProcessAccountName, Computer = DeviceName
  | extend Algorithm = "SHA256", FileHash = tostring(InitiatingProcessSHA256), CommandLine = InitiatingProcessCommandLine, Image = InitiatingProcessFolderPath
  ),
  (DeviceFileEvents
  | where SHA256 has_any (sha256Hashes)
  | project TimeGenerated, ActionType, DeviceId, DeviceName, InitiatingProcessAccountDomain, InitiatingProcessAccountName, InitiatingProcessCommandLine, InitiatingProcessFolderPath, InitiatingProcessId, InitiatingProcessParentFileName, InitiatingProcessFileName, InitiatingProcessSHA256, Type
  | extend AccountNT = InitiatingProcessAccountName, Computer = DeviceName
  | extend Algorithm = "SHA256", FileHash = tostring(InitiatingProcessSHA256), CommandLine = InitiatingProcessCommandLine, Image = InitiatingProcessFolderPath
  ),
  (DeviceImageLoadEvents
  | where SHA256 has_any (sha256Hashes)
  | project TimeGenerated, ActionType, DeviceId, DeviceName, InitiatingProcessAccountDomain, InitiatingProcessAccountName, InitiatingProcessCommandLine, InitiatingProcessFolderPath, InitiatingProcessId, InitiatingProcessParentFileName, InitiatingProcessFileName, InitiatingProcessSHA256, Type
  | extend AccountNT = InitiatingProcessAccountName, Computer = DeviceName
  | extend Algorithm = "SHA256", FileHash = tostring(InitiatingProcessSHA256), CommandLine = InitiatingProcessCommandLine, Image = InitiatingProcessFolderPath
  ),
  (SecurityAlert
  | where ProductName == "Microsoft Defender Advanced Threat Protection"
  | extend ThreatName = tostring(parse_json(ExtendedProperties).ThreatName)
  | where isnotempty(ThreatName)
  | where ThreatName has_any (signames)
  | extend Computer = tostring(parse_json(Entities)[0].HostName)
  )
  )
  | extend AccountNTName = tostring(split(AccountNT, "\\")[0]), AccountNTDomain = tostring(split(AccountNT, "\\")[1])
  | extend HostName = tostring(split(Computer, ".")[0]), DomainIndex = toint(indexof(Computer, '.'))
  | extend HostNameDomain = iff(DomainIndex != -1, substring(Computer, DomainIndex + 1), Computer)
  | project-away DomainIndex  
triggerOperator: gt

{
  "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
  "parameters": {
    "workspace": {
      "type": "String"
    }
  },
  "resources": [
    {
      "apiVersion": "2024-01-01-preview",
      "id": "[concat(resourceId('Microsoft.OperationalInsights/workspaces/providers', parameters('workspace'), 'Microsoft.SecurityInsights'),'/alertRules/bca9c877-2afc-4246-a26d-087ab1cdcd5f')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/bca9c877-2afc-4246-a26d-087ab1cdcd5f')]",
      "properties": {
        "alertRuleTemplateName": "bca9c877-2afc-4246-a26d-087ab1cdcd5f",
        "customDetails": null,
        "description": "'This query looks for file hashes and AV signatures associated with Prestige ransomware payload.'\n",
        "displayName": "Prestige ransomware IOCs Oct 2022",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "FileHash",
            "fieldMappings": [
              {
                "columnName": "Algorithm",
                "identifier": "Algorithm"
              },
              {
                "columnName": "FileHash",
                "identifier": "Value"
              }
            ]
          },
          {
            "entityType": "Process",
            "fieldMappings": [
              {
                "columnName": "InitiatingProcessId",
                "identifier": "ProcessId"
              },
              {
                "columnName": "CommandLine",
                "identifier": "CommandLine"
              }
            ]
          },
          {
            "entityType": "Account",
            "fieldMappings": [
              {
                "columnName": "AccountNT",
                "identifier": "FullName"
              },
              {
                "columnName": "AccountNTName",
                "identifier": "Name"
              },
              {
                "columnName": "AccountNTDomain",
                "identifier": "UPNSuffix"
              }
            ]
          },
          {
            "entityType": "Host",
            "fieldMappings": [
              {
                "columnName": "Computer",
                "identifier": "FullName"
              },
              {
                "columnName": "HostName",
                "identifier": "HostName"
              },
              {
                "columnName": "HostNameDomain",
                "identifier": "NTDomain"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Detections/MultipleDataSources/PrestigeRansomwareIOCsOct22.yaml",
        "query": "let sha256Hashes = dynamic([\"5dd1ca0d471dee41eb3ea0b6ea117810f228354fc3b7b47400a812573d40d91d\", \"5fc44c7342b84f50f24758e39c8848b2f0991e8817ef5465844f5f2ff6085a57\", \"6cff0bbd62efe99f381e5cc0c4182b0fb7a9a34e4be9ce68ee6b0d0ea3eee39c\"]);\nlet signames = dynamic([\"Ransom:Win32/Prestige\"]);\n(union isfuzzy=true\n(CommonSecurityLog\n| where FileHash in (sha256Hashes)\n| project TimeGenerated, Message, SourceUserID, FileHash, Type\n| extend timestamp = TimeGenerated, Algorithm = \"SHA256\", AccountNTName = SourceUserID\n),\n(imFileEvent\n| where TargetFileSHA256 has_any (sha256Hashes)\n| extend AccountNT = ActorUsername, Computer = DvcHostname, IPAddress = SrcIpAddr, CommandLine = ActingProcessCommandLine, FileHash = TargetFileSHA256\n| project Type, TimeGenerated, Computer, AccountNT, IPAddress, CommandLine, FileHash, Algorithm = \"SHA256\"\n),\n(Event\n| where Source =~ \"Microsoft-Windows-Sysmon\"\n| where EventID == 1\n| extend EvData = parse_xml(EventData)\n| extend EventDetail = EvData.DataItem.EventData.Data\n| extend ProcessId = tolong(EventDetail.[3].[\"#text\"]), Image = tostring(EventDetail.[4].[\"#text\"]), CommandLine = tostring(EventDetail.[10].[\"#text\"]), Hashes = tostring(EventDetail.[17].[\"#text\"])\n| extend Hashes = extract_all(@\"(?P<key>\\w+)=(?P<value>[a-zA-Z0-9]+)\", dynamic([\"key\",\"value\"]), Hashes)\n| extend Hashes = column_ifexists(\"Hashes\", dynamic([\"\", \"\"])), CommandLine = column_ifexists(\"CommandLine\", \"\")\n| mv-expand Hashes\n| where Hashes[0] =~ \"SHA256\" and Hashes[1] has_any (sha256Hashes)  \n| project TimeGenerated, EventDetail, UserName, Computer, Type, Source, ProcessId, Hashes, CommandLine, Image\n| extend Type = strcat(Type, \": \", Source)\n| extend AccountNT = UserName, InitiatingProcessId = ProcessId\n| extend Process = tostring(split(Image, '\\\\', -1)[-1]), Algorithm = \"SHA256\", FileHash = tostring(Hashes[1]) \n),\n(DeviceEvents\n| where InitiatingProcessSHA256 has_any (sha256Hashes) or SHA256 has_any (sha256Hashes)\n| project TimeGenerated, ActionType, DeviceId, DeviceName, InitiatingProcessAccountDomain, InitiatingProcessAccountName, InitiatingProcessCommandLine, InitiatingProcessFolderPath, InitiatingProcessId, InitiatingProcessParentFileName, InitiatingProcessFileName, InitiatingProcessSHA256, Type\n| extend AccountNT = InitiatingProcessAccountName, Computer = DeviceName\n| extend Algorithm = \"SHA256\", FileHash = tostring(InitiatingProcessSHA256), CommandLine = InitiatingProcessCommandLine, Image = InitiatingProcessFolderPath\n),\n(DeviceFileEvents\n| where SHA256 has_any (sha256Hashes)\n| project TimeGenerated, ActionType, DeviceId, DeviceName, InitiatingProcessAccountDomain, InitiatingProcessAccountName, InitiatingProcessCommandLine, InitiatingProcessFolderPath, InitiatingProcessId, InitiatingProcessParentFileName, InitiatingProcessFileName, InitiatingProcessSHA256, Type\n| extend AccountNT = InitiatingProcessAccountName, Computer = DeviceName\n| extend Algorithm = \"SHA256\", FileHash = tostring(InitiatingProcessSHA256), CommandLine = InitiatingProcessCommandLine, Image = InitiatingProcessFolderPath\n),\n(DeviceImageLoadEvents\n| where SHA256 has_any (sha256Hashes)\n| project TimeGenerated, ActionType, DeviceId, DeviceName, InitiatingProcessAccountDomain, InitiatingProcessAccountName, InitiatingProcessCommandLine, InitiatingProcessFolderPath, InitiatingProcessId, InitiatingProcessParentFileName, InitiatingProcessFileName, InitiatingProcessSHA256, Type\n| extend AccountNT = InitiatingProcessAccountName, Computer = DeviceName\n| extend Algorithm = \"SHA256\", FileHash = tostring(InitiatingProcessSHA256), CommandLine = InitiatingProcessCommandLine, Image = InitiatingProcessFolderPath\n),\n(SecurityAlert\n| where ProductName == \"Microsoft Defender Advanced Threat Protection\"\n| extend ThreatName = tostring(parse_json(ExtendedProperties).ThreatName)\n| where isnotempty(ThreatName)\n| where ThreatName has_any (signames)\n| extend Computer = tostring(parse_json(Entities)[0].HostName)\n)\n)\n| extend AccountNTName = tostring(split(AccountNT, \"\\\\\")[0]), AccountNTDomain = tostring(split(AccountNT, \"\\\\\")[1])\n| extend HostName = tostring(split(Computer, \".\")[0]), DomainIndex = toint(indexof(Computer, '.'))\n| extend HostNameDomain = iff(DomainIndex != -1, substring(Computer, DomainIndex + 1), Computer)\n| project-away DomainIndex\n",
        "queryFrequency": "P1D",
        "queryPeriod": "P1D",
        "severity": "High",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "Execution"
        ],
        "tags": [
          "Prestige",
          "Ransomware"
        ],
        "techniques": [
          "T1203"
        ],
        "templateVersion": "1.0.4",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}