Known Manganese IP and UserAgent activity

let IPList = dynamic(["45.63.52.41","140.82.17.161","207.148.101.95","45.32.87.51","66.42.98.156","45.76.144.105","217.163.28.35","45.32.141.174","149.28.165.249","209.250.225.247","45.63.100.115","95.179.229.230","209.250.233.247","45.77.121.232","45.76.175.65","104.238.160.237","45.77.181.97","95.179.192.125","149.28.93.184","140.82.16.81","45.76.173.103","45.77.255.22","45.32.11.71","149.28.77.26","45.32.54.50","104.156.233.156","45.32.21.118","45.63.62.109","45.77.244.202","149.248.11.205","104.238.190.244"]);
let IOCTerms = "\\?lang=[/..]*/dev/cmdb/sslvpn_websession|/dana-na/jam/[/..]*home/webserver/htdocs/dana/html5acc/guacamole[/..]*etc/passwd\\?";
(union isfuzzy=true
(CommonSecurityLog
| where isnotempty(SourceIP) or isnotempty(DestinationIP)
| where SourceIP in (IPList) or DestinationIP in (IPList) or has_any_ipv4 (Message, IPList)
| extend IPMatch = case(
SourceIP in (IPList), "SourceIP", 
DestinationIP in (IPList), "DestinationIP",
"Message") 
| where Message matches regex IOCTerms
| summarize StartTimeUtc = min(TimeGenerated), EndTimeUtc = max(TimeGenerated) by SourceIP, DestinationIP, DeviceProduct, DeviceAction, Message, Protocol, SourcePort, DestinationPort, DeviceAddress, DeviceName, IPMatch
| extend timestamp = StartTimeUtc, IPCustomEntity = case(IPMatch == "SourceIP", SourceIP, IPMatch == "DestinationIP", DestinationIP, "IP in Message Field") 
),
(OfficeActivity
| where isnotempty(UserAgent) and ClientIP in (IPList)
| where UserAgent contains "ExchangeServicesClient/0.0.0.0"
| summarize StartTimeUtc = min(TimeGenerated), EndTimeUtc = max(TimeGenerated) by SourceIP = ClientIP, Account = UserId, Type, RecordType, OfficeWorkload, UserAgent, OfficeObjectId, IPMatch = "ClientIP"
| extend timestamp = StartTimeUtc, AccountCustomEntity = Account, IPCustomEntity = SourceIP
)
)

severity: High
triggerThreshold: 0
query: |2

  let IPList = dynamic(["45.63.52.41","140.82.17.161","207.148.101.95","45.32.87.51","66.42.98.156","45.76.144.105","217.163.28.35","45.32.141.174","149.28.165.249","209.250.225.247","45.63.100.115","95.179.229.230","209.250.233.247","45.77.121.232","45.76.175.65","104.238.160.237","45.77.181.97","95.179.192.125","149.28.93.184","140.82.16.81","45.76.173.103","45.77.255.22","45.32.11.71","149.28.77.26","45.32.54.50","104.156.233.156","45.32.21.118","45.63.62.109","45.77.244.202","149.248.11.205","104.238.190.244"]);
  let IOCTerms = "\\?lang=[/..]*/dev/cmdb/sslvpn_websession|/dana-na/jam/[/..]*home/webserver/htdocs/dana/html5acc/guacamole[/..]*etc/passwd\\?";
  (union isfuzzy=true
  (CommonSecurityLog
  | where isnotempty(SourceIP) or isnotempty(DestinationIP)
  | where SourceIP in (IPList) or DestinationIP in (IPList) or has_any_ipv4 (Message, IPList)
  | extend IPMatch = case(
  SourceIP in (IPList), "SourceIP", 
  DestinationIP in (IPList), "DestinationIP",
  "Message") 
  | where Message matches regex IOCTerms
  | summarize StartTimeUtc = min(TimeGenerated), EndTimeUtc = max(TimeGenerated) by SourceIP, DestinationIP, DeviceProduct, DeviceAction, Message, Protocol, SourcePort, DestinationPort, DeviceAddress, DeviceName, IPMatch
  | extend timestamp = StartTimeUtc, IPCustomEntity = case(IPMatch == "SourceIP", SourceIP, IPMatch == "DestinationIP", DestinationIP, "IP in Message Field") 
  ),
  (OfficeActivity
  | where isnotempty(UserAgent) and ClientIP in (IPList)
  | where UserAgent contains "ExchangeServicesClient/0.0.0.0"
  | summarize StartTimeUtc = min(TimeGenerated), EndTimeUtc = max(TimeGenerated) by SourceIP = ClientIP, Account = UserId, Type, RecordType, OfficeWorkload, UserAgent, OfficeObjectId, IPMatch = "ClientIP"
  | extend timestamp = StartTimeUtc, AccountCustomEntity = Account, IPCustomEntity = SourceIP
  )
  )
queryFrequency: 1d
requiredDataConnectors:
- connectorId: Office365
  dataTypes:
  - OfficeActivity
id: a04cf847-a832-4c60-b687-b0b6147da219
version: 1.1.1
name: Known Manganese IP and UserAgent activity
kind: Scheduled
status: Available
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Legacy IOC based Threat Protection/Analytic Rules/Manganese_VPN-IOCs.yaml
queryPeriod: 1d
relevantTechniques:
- T1133
- T1114
triggerOperator: gt
tactics:
- InitialAccess
- Collection
description: |
  'Matches IP plus UserAgent IOCs in OfficeActivity data, along with IP plus Connection string information in the CommonSecurityLog data related to Manganese group activity.
  References: 
  https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44101/
  https://fortiguard.com/psirt/FG-IR-18-384'  
entityMappings:
- entityType: Account
  fieldMappings:
  - identifier: FullName
    columnName: AccountCustomEntity
- entityType: IP
  fieldMappings:
  - identifier: Address
    columnName: IPCustomEntity

{
  "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
  "parameters": {
    "workspace": {
      "type": "String"
    }
  },
  "resources": [
    {
      "id": "[concat(resourceId('Microsoft.OperationalInsights/workspaces/providers', parameters('workspace'), 'Microsoft.SecurityInsights'),'/alertRules/a04cf847-a832-4c60-b687-b0b6147da219')]",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/a04cf847-a832-4c60-b687-b0b6147da219')]",
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules",
      "kind": "Scheduled",
      "apiVersion": "2022-11-01",
      "properties": {
        "displayName": "Known Manganese IP and UserAgent activity",
        "description": "'Matches IP plus UserAgent IOCs in OfficeActivity data, along with IP plus Connection string information in the CommonSecurityLog data related to Manganese group activity.\nReferences: \nhttps://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44101/\nhttps://fortiguard.com/psirt/FG-IR-18-384'\n",
        "severity": "High",
        "enabled": true,
        "query": "\nlet IPList = dynamic([\"45.63.52.41\",\"140.82.17.161\",\"207.148.101.95\",\"45.32.87.51\",\"66.42.98.156\",\"45.76.144.105\",\"217.163.28.35\",\"45.32.141.174\",\"149.28.165.249\",\"209.250.225.247\",\"45.63.100.115\",\"95.179.229.230\",\"209.250.233.247\",\"45.77.121.232\",\"45.76.175.65\",\"104.238.160.237\",\"45.77.181.97\",\"95.179.192.125\",\"149.28.93.184\",\"140.82.16.81\",\"45.76.173.103\",\"45.77.255.22\",\"45.32.11.71\",\"149.28.77.26\",\"45.32.54.50\",\"104.156.233.156\",\"45.32.21.118\",\"45.63.62.109\",\"45.77.244.202\",\"149.248.11.205\",\"104.238.190.244\"]);\nlet IOCTerms = \"\\\\?lang=[/..]*/dev/cmdb/sslvpn_websession|/dana-na/jam/[/..]*home/webserver/htdocs/dana/html5acc/guacamole[/..]*etc/passwd\\\\?\";\n(union isfuzzy=true\n(CommonSecurityLog\n| where isnotempty(SourceIP) or isnotempty(DestinationIP)\n| where SourceIP in (IPList) or DestinationIP in (IPList) or has_any_ipv4 (Message, IPList)\n| extend IPMatch = case(\nSourceIP in (IPList), \"SourceIP\", \nDestinationIP in (IPList), \"DestinationIP\",\n\"Message\") \n| where Message matches regex IOCTerms\n| summarize StartTimeUtc = min(TimeGenerated), EndTimeUtc = max(TimeGenerated) by SourceIP, DestinationIP, DeviceProduct, DeviceAction, Message, Protocol, SourcePort, DestinationPort, DeviceAddress, DeviceName, IPMatch\n| extend timestamp = StartTimeUtc, IPCustomEntity = case(IPMatch == \"SourceIP\", SourceIP, IPMatch == \"DestinationIP\", DestinationIP, \"IP in Message Field\") \n),\n(OfficeActivity\n| where isnotempty(UserAgent) and ClientIP in (IPList)\n| where UserAgent contains \"ExchangeServicesClient/0.0.0.0\"\n| summarize StartTimeUtc = min(TimeGenerated), EndTimeUtc = max(TimeGenerated) by SourceIP = ClientIP, Account = UserId, Type, RecordType, OfficeWorkload, UserAgent, OfficeObjectId, IPMatch = \"ClientIP\"\n| extend timestamp = StartTimeUtc, AccountCustomEntity = Account, IPCustomEntity = SourceIP\n)\n)\n",
        "queryFrequency": "P1D",
        "queryPeriod": "P1D",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0,
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "InitialAccess",
          "Collection"
        ],
        "techniques": [
          "T1133",
          "T1114"
        ],
        "alertRuleTemplateName": "a04cf847-a832-4c60-b687-b0b6147da219",
        "customDetails": null,
        "entityMappings": [
          {
            "fieldMappings": [
              {
                "columnName": "AccountCustomEntity",
                "identifier": "FullName"
              }
            ],
            "entityType": "Account"
          },
          {
            "fieldMappings": [
              {
                "columnName": "IPCustomEntity",
                "identifier": "Address"
              }
            ],
            "entityType": "IP"
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Legacy IOC based Threat Protection/Analytic Rules/Manganese_VPN-IOCs.yaml",
        "templateVersion": "1.1.1",
        "status": "Available"
      }
    }
  ]
}