Prestige ransomware IOCs Oct 2022

id: bca9c877-2afc-4246-a26d-087ab1cdcd5f
name: Prestige ransomware IOCs Oct 2022
description: |
  'This query looks for file hashes and AV signatures associated with Prestige ransomware payload.'
severity: High
requiredDataConnectors:
  - connectorId: MicrosoftThreatProtection
    dataTypes:
      - DeviceEvents
      - DeviceFileEvents
      - DeviceImageLoadEvents
  - connectorId: SecurityEvents
    dataTypes:
      - SecurityEvents  
queryFrequency: 1d
queryPeriod: 1d
triggerOperator: gt
triggerThreshold: 0
tactics:
  - Execution
relevantTechniques:
  - T1203
tags:
  - Prestige
  - Ransomware
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
entityMappings:
  - entityType: FileHash
    fieldMappings:
      - identifier: Algorithm
        columnName: Algorithm
      - identifier: Value
        columnName: FileHash
  - entityType: Process
    fieldMappings:
      - identifier: ProcessId
        columnName: InitiatingProcessId
      - identifier: CommandLine
        columnName: CommandLine
  - entityType: Account
    fieldMappings:
      - identifier: FullName
        columnName: AccountNT
      - identifier: Name
        columnName: AccountNTName
      - identifier: UPNSuffix
        columnName: AccountNTDomain
  - entityType: Host
    fieldMappings:
      - identifier: FullName
        columnName: Computer
      - identifier: HostName
        columnName: HostName
      - identifier: NTDomain
        columnName: HostNameDomain
version: 1.0.4
kind: Scheduled
metadata:
    source:
        kind: Community
    author:
        name: Microsoft Security Research
    support:
        tier: Community
    categories:
        domains: [ "Security - Others" ]