Europium - Hash and IP IOCs - September 2022

Back


Id	9d8b5a18-b7db-4c23-84a6-95febaf7e1e4
Rulename	Europium - Hash and IP IOCs - September 2022
Description	Identifies a match across various data feeds for hashes and IP IOC related to Europium Reference: https://www.microsoft.com/security/blog/2022/09/08/microsoft-investigates-iranian-attacks-against-the-albanian-government
Severity	High
Tactics	CommandAndControl CredentialAccess
Techniques	T1071 T1003
Required data connectors	AzureFirewall AzureMonitor(VMInsights) CEF CheckPoint CiscoASA DNS F5 Fortinet MicrosoftThreatProtection Office365 PaloAltoNetworks WindowsFirewall
Kind	Scheduled
Query frequency	12h
Query period	12h
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Detections/MultipleDataSources/EUROPIUM _September2022.yaml
Version	1.1.1
Arm template	9d8b5a18-b7db-4c23-84a6-95febaf7e1e4.json

KQL

let iocs = externaldata(DateAdded:string,IoC:string,Type:string,TLP:string) [@"https://raw.githubusercontent.com/Azure/Azure-Sentinel/master/Sample%20Data/Feeds/Europium_September2022.csv"] with (format="csv", ignoreFirstRecord=True);
let sha256Hashes = (iocs | where Type =~ "sha256" | project IoC);
let IPList = (iocs | where Type =~ "ip"| project IoC);
let IPRegex = '[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}';
(union isfuzzy=true
(CommonSecurityLog
| where SourceIP in (IPList) or DestinationIP in (IPList) or Message has_any (IPList)
| parse Message with * '(' DNSName ')' * 
| project TimeGenerated, SourceIP, DestinationIP, Message, SourceUserID, RequestURL, DNSName, Type
| extend MessageIP = extract(IPRegex, 0, Message), RequestIP = extract(IPRegex, 0, RequestURL)
| extend IPMatch = case(SourceIP in (IPList), "SourceIP", DestinationIP in (IPList), "DestinationIP", MessageIP in (IPList), "Message",  "NoMatch")
| extend timestamp = TimeGenerated, IPEntity = case(IPMatch == "SourceIP", SourceIP, IPMatch == "DestinationIP", DestinationIP, IPMatch == "Message", MessageIP, "NoMatch")
),
(DnsEvents
| where IPAddresses in (IPList)  
| project TimeGenerated, Computer, IPAddresses, Name, ClientIP, Type
| extend DestinationIPAddress = IPAddresses, DNSName = Name, Computer 
| extend timestamp = TimeGenerated, IPEntity = DestinationIPAddress, HostEntity = Computer
),
(VMConnection
| where SourceIp in (IPList) or DestinationIp in (IPList)
| parse RemoteDnsCanonicalNames with * '["' DNSName '"]' *
| project TimeGenerated, Computer, Direction, ProcessName, SourceIp, DestinationIp, DestinationPort, RemoteDnsQuestions, DNSName,BytesSent, BytesReceived, RemoteCountry, Type
| extend IPMatch = case( SourceIp in (IPList), "SourceIP", DestinationIp in (IPList), "DestinationIP", "None") 
| extend timestamp = TimeGenerated, IPEntity = case(IPMatch == "SourceIP", SourceIp, IPMatch == "DestinationIP", DestinationIp, "NoMatch"), File = ProcessName, HostEntity = Computer
),
(Event
| where Source == "Microsoft-Windows-Sysmon"
| where EventID == 3
| extend EvData = parse_xml(EventData)
| extend EventDetail = EvData.DataItem.EventData.Data
| extend SourceIP = tostring(EventDetail.[9].["#text"]), DestinationIP = tostring(EventDetail.[14].["#text"]), Image = tostring(EventDetail.[4].["#text"])
| where SourceIP in (IPList) or DestinationIP in (IPList)
| project TimeGenerated, SourceIP, DestinationIP, Image, UserName, Computer, Type
| extend IPMatch = case( SourceIP in (IPList), "SourceIP", DestinationIP in (IPList), "DestinationIP", "None")
| extend timestamp = TimeGenerated, File = tostring(split(Image, '\\', -1)[-1]), IPEntity = case(IPMatch == "SourceIP", SourceIP, IPMatch == "DestinationIP", DestinationIP, "None"), 
HostEntity = Computer, AccountName = tostring(split(UserName, @'\')[1]), AccountDomain = tostring(split(UserName, @'\')[0])
| extend InitiatingProcessAccount = UserName
), 
(OfficeActivity
| where ClientIP in (IPList) 
| project TimeGenerated, UserAgent, Operation, RecordType, UserId, ClientIP, Type
| extend timestamp = TimeGenerated, IPEntity = ClientIP, AccountName = tostring(split(UserId, "@")[0]), AccountDomain = tostring(split(UserId, "@")[1])
| extend InitiatingProcessAccount = UserId
),
(DeviceNetworkEvents
| where RemoteIP in (IPList) or InitiatingProcessSHA256 in (sha256Hashes)
| project TimeGenerated, ActionType, DeviceId, Computer = DeviceName, InitiatingProcessAccountDomain, InitiatingProcessAccountName, InitiatingProcessCommandLine, 
InitiatingProcessFolderPath, InitiatingProcessId, InitiatingProcessParentFileName, InitiatingProcessFileName, RemoteIP, RemoteUrl, RemotePort, LocalIP, Type
| extend timestamp = TimeGenerated, IPEntity = RemoteIP, HostEntity = Computer, AccountName = InitiatingProcessAccountName, AccountDomain = InitiatingProcessAccountDomain
| extend InitiatingProcessAccount = strcat(AccountDomain, "\\", AccountName)
),
(WindowsFirewall
| where SourceIP in (IPList) or DestinationIP in (IPList) 
| project TimeGenerated, Computer, CommunicationDirection, SourceIP, DestinationIP, SourcePort, DestinationPort, Type
| extend IPMatch = case( SourceIP in (IPList), "SourceIP", DestinationIP in (IPList), "DestinationIP", "None")
| extend timestamp = TimeGenerated, HostEntity = Computer, IPEntity = case(IPMatch == "SourceIP", SourceIP, IPMatch == "DestinationIP", DestinationIP, "None")
), 
(imFileEvent
| where TargetFileSHA256 has_any (sha256Hashes)
| extend Account = ActorUsername, Computer = DvcHostname, IPAddress = SrcIpAddr, CommandLine = ActingProcessCommandLine, FileHash = TargetFileSHA256
| project Type, TimeGenerated, Computer, Account, IPAddress, CommandLine, FileHash
| extend timestamp = TimeGenerated, IPEntity = IPAddress,  HostEntity = Computer, Algorithm = "SHA256", FileHash = tostring(FileHash)
| extend AccountName = tostring(split(Account, @'\')[1]), AccountDomain = tostring(split(Account, @'\')[0])
| extend InitiatingProcessAccount = Account
),
(DeviceFileEvents
| where SHA256 has_any (sha256Hashes)
| project TimeGenerated, ActionType, DeviceId, DeviceName, InitiatingProcessAccountDomain, InitiatingProcessAccountName, InitiatingProcessCommandLine, InitiatingProcessFolderPath, 
InitiatingProcessId, InitiatingProcessParentFileName, InitiatingProcessFileName, InitiatingProcessSHA256, Type
| extend timestamp = TimeGenerated, HostEntity = DeviceName, AccountName = InitiatingProcessAccountName, AccountDomain = InitiatingProcessAccountDomain, 
Algorithm = "SHA256", FileHash = tostring(InitiatingProcessSHA256), CommandLine = InitiatingProcessCommandLine,Image = InitiatingProcessFolderPath
| extend InitiatingProcessAccount = strcat(AccountDomain, "\\", AccountName)
),
(DeviceImageLoadEvents
| where SHA256 has_any (sha256Hashes)
| project TimeGenerated, ActionType, DeviceId, DeviceName, InitiatingProcessAccountDomain, InitiatingProcessAccountName, InitiatingProcessCommandLine, InitiatingProcessFolderPath, 
InitiatingProcessId, InitiatingProcessParentFileName, InitiatingProcessFileName, InitiatingProcessSHA256, Type
| extend timestamp = TimeGenerated, HostEntity = DeviceName, AccountName = InitiatingProcessAccountName, AccountDomain = InitiatingProcessAccountDomain, 
Algorithm = "SHA256", FileHash = tostring(InitiatingProcessSHA256),  CommandLine = InitiatingProcessCommandLine,Image = InitiatingProcessFolderPath
| extend InitiatingProcessAccount = strcat(AccountDomain, "\\", AccountName)
),
(Event
| where Source =~ "Microsoft-Windows-Sysmon"
| where EventID == 1
| extend EvData = parse_xml(EventData)
| extend EventDetail = EvData.DataItem.EventData.Data
| extend Image = EventDetail.[4].["#text"],  CommandLine = 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, Hashes, CommandLine, Image
| extend Type = strcat(Type, ": ", Source)
| extend timestamp = TimeGenerated, HostEntity = Computer, AccountName = tostring(split(UserName, @'\')[1]), AccountUPNSuffix = tostring(split(UserName, @'\')[0]), FileHash = tostring(Hashes[1])
| extend InitiatingProcessAccount = UserName
)
)
| extend HostName = tostring(split(HostEntity, ".")[0]), DomainIndex = toint(indexof(HostEntity, '.'))
| extend HostNameDomain = iff(DomainIndex != -1, substring(HostEntity, DomainIndex + 1), HostEntity)

YAML

relevantTechniques:
- T1071
- T1003
name: Europium - Hash and IP IOCs - September 2022
requiredDataConnectors:
- dataTypes:
  - DnsEvents
  connectorId: DNS
- dataTypes:
  - VMConnection
  connectorId: AzureMonitor(VMInsights)
- dataTypes:
  - CommonSecurityLog
  connectorId: F5
- dataTypes:
  - CommonSecurityLog
  connectorId: CiscoASA
- dataTypes:
  - CommonSecurityLog
  connectorId: PaloAltoNetworks
- dataTypes:
  - CommonSecurityLog
  connectorId: Fortinet
- dataTypes:
  - CommonSecurityLog
  connectorId: CheckPoint
- dataTypes:
  - CommonSecurityLog
  connectorId: CEF
- dataTypes:
  - DeviceNetworkEvents
  - DeviceFileEvents
  - DeviceImageLoadEvents
  connectorId: MicrosoftThreatProtection
- dataTypes:
  - OfficeActivity
  connectorId: Office365
- dataTypes:
  - AzureDiagnostics
  connectorId: AzureFirewall
- dataTypes:
  - WindowsFirewall
  connectorId: WindowsFirewall
entityMappings:
- fieldMappings:
  - identifier: FullName
    columnName: InitiatingProcessAccount
  - identifier: Name
    columnName: AccountName
  - identifier: NTDomain
    columnName: AccountDomain
  entityType: Account
- fieldMappings:
  - identifier: FullName
    columnName: HostEntity
  - identifier: HostName
    columnName: HostName
  - identifier: NTDomain
    columnName: HostNameDomain
  entityType: Host
- fieldMappings:
  - identifier: Address
    columnName: IPEntity
  entityType: IP
- fieldMappings:
  - identifier: Algorithm
    columnName: Algorithm
  - identifier: Value
    columnName: FileHash
  entityType: FileHash
triggerThreshold: 0
id: 9d8b5a18-b7db-4c23-84a6-95febaf7e1e4
tactics:
- CommandAndControl
- CredentialAccess
version: 1.1.1
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Detections/MultipleDataSources/EUROPIUM _September2022.yaml
queryPeriod: 12h
kind: Scheduled
tags:
- Europium
- Schema: ASIMFileEvent
  SchemaVersion: 0.1.0
metadata:
  categories:
    domains:
    - Security - Threat Intelligence
  author:
    name: Microsoft Security Research
  support:
    tier: Community
  source:
    kind: Community
queryFrequency: 12h
severity: High
description: |
  'Identifies a match across various data feeds for  hashes and IP IOC related to Europium
   Reference: https://www.microsoft.com/security/blog/2022/09/08/microsoft-investigates-iranian-attacks-against-the-albanian-government'  
query: |
  let iocs = externaldata(DateAdded:string,IoC:string,Type:string,TLP:string) [@"https://raw.githubusercontent.com/Azure/Azure-Sentinel/master/Sample%20Data/Feeds/Europium_September2022.csv"] with (format="csv", ignoreFirstRecord=True);
  let sha256Hashes = (iocs | where Type =~ "sha256" | project IoC);
  let IPList = (iocs | where Type =~ "ip"| project IoC);
  let IPRegex = '[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}';
  (union isfuzzy=true
  (CommonSecurityLog
  | where SourceIP in (IPList) or DestinationIP in (IPList) or Message has_any (IPList)
  | parse Message with * '(' DNSName ')' * 
  | project TimeGenerated, SourceIP, DestinationIP, Message, SourceUserID, RequestURL, DNSName, Type
  | extend MessageIP = extract(IPRegex, 0, Message), RequestIP = extract(IPRegex, 0, RequestURL)
  | extend IPMatch = case(SourceIP in (IPList), "SourceIP", DestinationIP in (IPList), "DestinationIP", MessageIP in (IPList), "Message",  "NoMatch")
  | extend timestamp = TimeGenerated, IPEntity = case(IPMatch == "SourceIP", SourceIP, IPMatch == "DestinationIP", DestinationIP, IPMatch == "Message", MessageIP, "NoMatch")
  ),
  (DnsEvents
  | where IPAddresses in (IPList)  
  | project TimeGenerated, Computer, IPAddresses, Name, ClientIP, Type
  | extend DestinationIPAddress = IPAddresses, DNSName = Name, Computer 
  | extend timestamp = TimeGenerated, IPEntity = DestinationIPAddress, HostEntity = Computer
  ),
  (VMConnection
  | where SourceIp in (IPList) or DestinationIp in (IPList)
  | parse RemoteDnsCanonicalNames with * '["' DNSName '"]' *
  | project TimeGenerated, Computer, Direction, ProcessName, SourceIp, DestinationIp, DestinationPort, RemoteDnsQuestions, DNSName,BytesSent, BytesReceived, RemoteCountry, Type
  | extend IPMatch = case( SourceIp in (IPList), "SourceIP", DestinationIp in (IPList), "DestinationIP", "None") 
  | extend timestamp = TimeGenerated, IPEntity = case(IPMatch == "SourceIP", SourceIp, IPMatch == "DestinationIP", DestinationIp, "NoMatch"), File = ProcessName, HostEntity = Computer
  ),
  (Event
  | where Source == "Microsoft-Windows-Sysmon"
  | where EventID == 3
  | extend EvData = parse_xml(EventData)
  | extend EventDetail = EvData.DataItem.EventData.Data
  | extend SourceIP = tostring(EventDetail.[9].["#text"]), DestinationIP = tostring(EventDetail.[14].["#text"]), Image = tostring(EventDetail.[4].["#text"])
  | where SourceIP in (IPList) or DestinationIP in (IPList)
  | project TimeGenerated, SourceIP, DestinationIP, Image, UserName, Computer, Type
  | extend IPMatch = case( SourceIP in (IPList), "SourceIP", DestinationIP in (IPList), "DestinationIP", "None")
  | extend timestamp = TimeGenerated, File = tostring(split(Image, '\\', -1)[-1]), IPEntity = case(IPMatch == "SourceIP", SourceIP, IPMatch == "DestinationIP", DestinationIP, "None"), 
  HostEntity = Computer, AccountName = tostring(split(UserName, @'\')[1]), AccountDomain = tostring(split(UserName, @'\')[0])
  | extend InitiatingProcessAccount = UserName
  ), 
  (OfficeActivity
  | where ClientIP in (IPList) 
  | project TimeGenerated, UserAgent, Operation, RecordType, UserId, ClientIP, Type
  | extend timestamp = TimeGenerated, IPEntity = ClientIP, AccountName = tostring(split(UserId, "@")[0]), AccountDomain = tostring(split(UserId, "@")[1])
  | extend InitiatingProcessAccount = UserId
  ),
  (DeviceNetworkEvents
  | where RemoteIP in (IPList) or InitiatingProcessSHA256 in (sha256Hashes)
  | project TimeGenerated, ActionType, DeviceId, Computer = DeviceName, InitiatingProcessAccountDomain, InitiatingProcessAccountName, InitiatingProcessCommandLine, 
  InitiatingProcessFolderPath, InitiatingProcessId, InitiatingProcessParentFileName, InitiatingProcessFileName, RemoteIP, RemoteUrl, RemotePort, LocalIP, Type
  | extend timestamp = TimeGenerated, IPEntity = RemoteIP, HostEntity = Computer, AccountName = InitiatingProcessAccountName, AccountDomain = InitiatingProcessAccountDomain
  | extend InitiatingProcessAccount = strcat(AccountDomain, "\\", AccountName)
  ),
  (WindowsFirewall
  | where SourceIP in (IPList) or DestinationIP in (IPList) 
  | project TimeGenerated, Computer, CommunicationDirection, SourceIP, DestinationIP, SourcePort, DestinationPort, Type
  | extend IPMatch = case( SourceIP in (IPList), "SourceIP", DestinationIP in (IPList), "DestinationIP", "None")
  | extend timestamp = TimeGenerated, HostEntity = Computer, IPEntity = case(IPMatch == "SourceIP", SourceIP, IPMatch == "DestinationIP", DestinationIP, "None")
  ), 
  (imFileEvent
  | where TargetFileSHA256 has_any (sha256Hashes)
  | extend Account = ActorUsername, Computer = DvcHostname, IPAddress = SrcIpAddr, CommandLine = ActingProcessCommandLine, FileHash = TargetFileSHA256
  | project Type, TimeGenerated, Computer, Account, IPAddress, CommandLine, FileHash
  | extend timestamp = TimeGenerated, IPEntity = IPAddress,  HostEntity = Computer, Algorithm = "SHA256", FileHash = tostring(FileHash)
  | extend AccountName = tostring(split(Account, @'\')[1]), AccountDomain = tostring(split(Account, @'\')[0])
  | extend InitiatingProcessAccount = Account
  ),
  (DeviceFileEvents
  | where SHA256 has_any (sha256Hashes)
  | project TimeGenerated, ActionType, DeviceId, DeviceName, InitiatingProcessAccountDomain, InitiatingProcessAccountName, InitiatingProcessCommandLine, InitiatingProcessFolderPath, 
  InitiatingProcessId, InitiatingProcessParentFileName, InitiatingProcessFileName, InitiatingProcessSHA256, Type
  | extend timestamp = TimeGenerated, HostEntity = DeviceName, AccountName = InitiatingProcessAccountName, AccountDomain = InitiatingProcessAccountDomain, 
  Algorithm = "SHA256", FileHash = tostring(InitiatingProcessSHA256), CommandLine = InitiatingProcessCommandLine,Image = InitiatingProcessFolderPath
  | extend InitiatingProcessAccount = strcat(AccountDomain, "\\", AccountName)
  ),
  (DeviceImageLoadEvents
  | where SHA256 has_any (sha256Hashes)
  | project TimeGenerated, ActionType, DeviceId, DeviceName, InitiatingProcessAccountDomain, InitiatingProcessAccountName, InitiatingProcessCommandLine, InitiatingProcessFolderPath, 
  InitiatingProcessId, InitiatingProcessParentFileName, InitiatingProcessFileName, InitiatingProcessSHA256, Type
  | extend timestamp = TimeGenerated, HostEntity = DeviceName, AccountName = InitiatingProcessAccountName, AccountDomain = InitiatingProcessAccountDomain, 
  Algorithm = "SHA256", FileHash = tostring(InitiatingProcessSHA256),  CommandLine = InitiatingProcessCommandLine,Image = InitiatingProcessFolderPath
  | extend InitiatingProcessAccount = strcat(AccountDomain, "\\", AccountName)
  ),
  (Event
  | where Source =~ "Microsoft-Windows-Sysmon"
  | where EventID == 1
  | extend EvData = parse_xml(EventData)
  | extend EventDetail = EvData.DataItem.EventData.Data
  | extend Image = EventDetail.[4].["#text"],  CommandLine = 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, Hashes, CommandLine, Image
  | extend Type = strcat(Type, ": ", Source)
  | extend timestamp = TimeGenerated, HostEntity = Computer, AccountName = tostring(split(UserName, @'\')[1]), AccountUPNSuffix = tostring(split(UserName, @'\')[0]), FileHash = tostring(Hashes[1])
  | extend InitiatingProcessAccount = UserName
  )
  )
  | extend HostName = tostring(split(HostEntity, ".")[0]), DomainIndex = toint(indexof(HostEntity, '.'))
  | extend HostNameDomain = iff(DomainIndex != -1, substring(HostEntity, DomainIndex + 1), HostEntity)  
triggerOperator: gt

ARM

{
  "$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/9d8b5a18-b7db-4c23-84a6-95febaf7e1e4')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/9d8b5a18-b7db-4c23-84a6-95febaf7e1e4')]",
      "properties": {
        "alertRuleTemplateName": "9d8b5a18-b7db-4c23-84a6-95febaf7e1e4",
        "customDetails": null,
        "description": "'Identifies a match across various data feeds for  hashes and IP IOC related to Europium\n Reference: https://www.microsoft.com/security/blog/2022/09/08/microsoft-investigates-iranian-attacks-against-the-albanian-government'\n",
        "displayName": "Europium - Hash and IP IOCs - September 2022",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Account",
            "fieldMappings": [
              {
                "columnName": "InitiatingProcessAccount",
                "identifier": "FullName"
              },
              {
                "columnName": "AccountName",
                "identifier": "Name"
              },
              {
                "columnName": "AccountDomain",
                "identifier": "NTDomain"
              }
            ]
          },
          {
            "entityType": "Host",
            "fieldMappings": [
              {
                "columnName": "HostEntity",
                "identifier": "FullName"
              },
              {
                "columnName": "HostName",
                "identifier": "HostName"
              },
              {
                "columnName": "HostNameDomain",
                "identifier": "NTDomain"
              }
            ]
          },
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "columnName": "IPEntity",
                "identifier": "Address"
              }
            ]
          },
          {
            "entityType": "FileHash",
            "fieldMappings": [
              {
                "columnName": "Algorithm",
                "identifier": "Algorithm"
              },
              {
                "columnName": "FileHash",
                "identifier": "Value"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Detections/MultipleDataSources/EUROPIUM _September2022.yaml",
        "query": "let iocs = externaldata(DateAdded:string,IoC:string,Type:string,TLP:string) [@\"https://raw.githubusercontent.com/Azure/Azure-Sentinel/master/Sample%20Data/Feeds/Europium_September2022.csv\"] with (format=\"csv\", ignoreFirstRecord=True);\nlet sha256Hashes = (iocs | where Type =~ \"sha256\" | project IoC);\nlet IPList = (iocs | where Type =~ \"ip\"| project IoC);\nlet IPRegex = '[0-9]{1,3}\\\\.[0-9]{1,3}\\\\.[0-9]{1,3}\\\\.[0-9]{1,3}';\n(union isfuzzy=true\n(CommonSecurityLog\n| where SourceIP in (IPList) or DestinationIP in (IPList) or Message has_any (IPList)\n| parse Message with * '(' DNSName ')' * \n| project TimeGenerated, SourceIP, DestinationIP, Message, SourceUserID, RequestURL, DNSName, Type\n| extend MessageIP = extract(IPRegex, 0, Message), RequestIP = extract(IPRegex, 0, RequestURL)\n| extend IPMatch = case(SourceIP in (IPList), \"SourceIP\", DestinationIP in (IPList), \"DestinationIP\", MessageIP in (IPList), \"Message\",  \"NoMatch\")\n| extend timestamp = TimeGenerated, IPEntity = case(IPMatch == \"SourceIP\", SourceIP, IPMatch == \"DestinationIP\", DestinationIP, IPMatch == \"Message\", MessageIP, \"NoMatch\")\n),\n(DnsEvents\n| where IPAddresses in (IPList)  \n| project TimeGenerated, Computer, IPAddresses, Name, ClientIP, Type\n| extend DestinationIPAddress = IPAddresses, DNSName = Name, Computer \n| extend timestamp = TimeGenerated, IPEntity = DestinationIPAddress, HostEntity = Computer\n),\n(VMConnection\n| where SourceIp in (IPList) or DestinationIp in (IPList)\n| parse RemoteDnsCanonicalNames with * '[\"' DNSName '\"]' *\n| project TimeGenerated, Computer, Direction, ProcessName, SourceIp, DestinationIp, DestinationPort, RemoteDnsQuestions, DNSName,BytesSent, BytesReceived, RemoteCountry, Type\n| extend IPMatch = case( SourceIp in (IPList), \"SourceIP\", DestinationIp in (IPList), \"DestinationIP\", \"None\") \n| extend timestamp = TimeGenerated, IPEntity = case(IPMatch == \"SourceIP\", SourceIp, IPMatch == \"DestinationIP\", DestinationIp, \"NoMatch\"), File = ProcessName, HostEntity = Computer\n),\n(Event\n| where Source == \"Microsoft-Windows-Sysmon\"\n| where EventID == 3\n| extend EvData = parse_xml(EventData)\n| extend EventDetail = EvData.DataItem.EventData.Data\n| extend SourceIP = tostring(EventDetail.[9].[\"#text\"]), DestinationIP = tostring(EventDetail.[14].[\"#text\"]), Image = tostring(EventDetail.[4].[\"#text\"])\n| where SourceIP in (IPList) or DestinationIP in (IPList)\n| project TimeGenerated, SourceIP, DestinationIP, Image, UserName, Computer, Type\n| extend IPMatch = case( SourceIP in (IPList), \"SourceIP\", DestinationIP in (IPList), \"DestinationIP\", \"None\")\n| extend timestamp = TimeGenerated, File = tostring(split(Image, '\\\\', -1)[-1]), IPEntity = case(IPMatch == \"SourceIP\", SourceIP, IPMatch == \"DestinationIP\", DestinationIP, \"None\"), \nHostEntity = Computer, AccountName = tostring(split(UserName, @'\\')[1]), AccountDomain = tostring(split(UserName, @'\\')[0])\n| extend InitiatingProcessAccount = UserName\n), \n(OfficeActivity\n| where ClientIP in (IPList) \n| project TimeGenerated, UserAgent, Operation, RecordType, UserId, ClientIP, Type\n| extend timestamp = TimeGenerated, IPEntity = ClientIP, AccountName = tostring(split(UserId, \"@\")[0]), AccountDomain = tostring(split(UserId, \"@\")[1])\n| extend InitiatingProcessAccount = UserId\n),\n(DeviceNetworkEvents\n| where RemoteIP in (IPList) or InitiatingProcessSHA256 in (sha256Hashes)\n| project TimeGenerated, ActionType, DeviceId, Computer = DeviceName, InitiatingProcessAccountDomain, InitiatingProcessAccountName, InitiatingProcessCommandLine, \nInitiatingProcessFolderPath, InitiatingProcessId, InitiatingProcessParentFileName, InitiatingProcessFileName, RemoteIP, RemoteUrl, RemotePort, LocalIP, Type\n| extend timestamp = TimeGenerated, IPEntity = RemoteIP, HostEntity = Computer, AccountName = InitiatingProcessAccountName, AccountDomain = InitiatingProcessAccountDomain\n| extend InitiatingProcessAccount = strcat(AccountDomain, \"\\\\\", AccountName)\n),\n(WindowsFirewall\n| where SourceIP in (IPList) or DestinationIP in (IPList) \n| project TimeGenerated, Computer, CommunicationDirection, SourceIP, DestinationIP, SourcePort, DestinationPort, Type\n| extend IPMatch = case( SourceIP in (IPList), \"SourceIP\", DestinationIP in (IPList), \"DestinationIP\", \"None\")\n| extend timestamp = TimeGenerated, HostEntity = Computer, IPEntity = case(IPMatch == \"SourceIP\", SourceIP, IPMatch == \"DestinationIP\", DestinationIP, \"None\")\n), \n(imFileEvent\n| where TargetFileSHA256 has_any (sha256Hashes)\n| extend Account = ActorUsername, Computer = DvcHostname, IPAddress = SrcIpAddr, CommandLine = ActingProcessCommandLine, FileHash = TargetFileSHA256\n| project Type, TimeGenerated, Computer, Account, IPAddress, CommandLine, FileHash\n| extend timestamp = TimeGenerated, IPEntity = IPAddress,  HostEntity = Computer, Algorithm = \"SHA256\", FileHash = tostring(FileHash)\n| extend AccountName = tostring(split(Account, @'\\')[1]), AccountDomain = tostring(split(Account, @'\\')[0])\n| extend InitiatingProcessAccount = Account\n),\n(DeviceFileEvents\n| where SHA256 has_any (sha256Hashes)\n| project TimeGenerated, ActionType, DeviceId, DeviceName, InitiatingProcessAccountDomain, InitiatingProcessAccountName, InitiatingProcessCommandLine, InitiatingProcessFolderPath, \nInitiatingProcessId, InitiatingProcessParentFileName, InitiatingProcessFileName, InitiatingProcessSHA256, Type\n| extend timestamp = TimeGenerated, HostEntity = DeviceName, AccountName = InitiatingProcessAccountName, AccountDomain = InitiatingProcessAccountDomain, \nAlgorithm = \"SHA256\", FileHash = tostring(InitiatingProcessSHA256), CommandLine = InitiatingProcessCommandLine,Image = InitiatingProcessFolderPath\n| extend InitiatingProcessAccount = strcat(AccountDomain, \"\\\\\", AccountName)\n),\n(DeviceImageLoadEvents\n| where SHA256 has_any (sha256Hashes)\n| project TimeGenerated, ActionType, DeviceId, DeviceName, InitiatingProcessAccountDomain, InitiatingProcessAccountName, InitiatingProcessCommandLine, InitiatingProcessFolderPath, \nInitiatingProcessId, InitiatingProcessParentFileName, InitiatingProcessFileName, InitiatingProcessSHA256, Type\n| extend timestamp = TimeGenerated, HostEntity = DeviceName, AccountName = InitiatingProcessAccountName, AccountDomain = InitiatingProcessAccountDomain, \nAlgorithm = \"SHA256\", FileHash = tostring(InitiatingProcessSHA256),  CommandLine = InitiatingProcessCommandLine,Image = InitiatingProcessFolderPath\n| extend InitiatingProcessAccount = strcat(AccountDomain, \"\\\\\", AccountName)\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 Image = EventDetail.[4].[\"#text\"],  CommandLine = 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, Hashes, CommandLine, Image\n| extend Type = strcat(Type, \": \", Source)\n| extend timestamp = TimeGenerated, HostEntity = Computer, AccountName = tostring(split(UserName, @'\\')[1]), AccountUPNSuffix = tostring(split(UserName, @'\\')[0]), FileHash = tostring(Hashes[1])\n| extend InitiatingProcessAccount = UserName\n)\n)\n| extend HostName = tostring(split(HostEntity, \".\")[0]), DomainIndex = toint(indexof(HostEntity, '.'))\n| extend HostNameDomain = iff(DomainIndex != -1, substring(HostEntity, DomainIndex + 1), HostEntity)\n",
        "queryFrequency": "PT12H",
        "queryPeriod": "PT12H",
        "severity": "High",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "CommandAndControl",
          "CredentialAccess"
        ],
        "tags": [
          "Europium",
          {
            "Schema": "ASIMFileEvent",
            "SchemaVersion": "0.1.0"
          }
        ],
        "techniques": [
          "T1003",
          "T1071"
        ],
        "templateVersion": "1.1.1",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}