Chia_Crypto_Mining - Domain, Process, Hash and IP IOCs - June 2021
Id | 595a10c9-91be-4abb-bbc7-ae9c57848bef |
Rulename | Chia_Crypto_Mining - Domain, Process, Hash and IP IOCs - June 2021 |
Description | Identifies a match across various data feeds for domains, process, hashes and IP IOC related to Chia cryptocurrency farming/plotting activity. |
Severity | Low |
Tactics | Impact |
Techniques | T1496 |
Required data connectors | AzureFirewall AzureMonitor(VMInsights) CEF CheckPoint CiscoASA DNS F5 Fortinet MicrosoftThreatProtection Office365 PaloAltoNetworks SecurityEvents WindowsFirewall |
Kind | Scheduled |
Query frequency | 6h |
Query period | 6h |
Trigger threshold | 0 |
Trigger operator | gt |
Source Uri | https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Legacy IOC based Threat Protection/Analytic Rules/ChiaCryptoMining.yaml |
Version | 1.2.1 |
Arm template | 595a10c9-91be-4abb-bbc7-ae9c57848bef.json |
let iocs = externaldata(DateAdded:string,IoC:string,Type:string,TLP:string) [@"https://raw.githubusercontent.com/Azure/Azure-Sentinel/master/Sample%20Data/Feeds/ChiaCryptoIOC.csv"] with (format="csv", ignoreFirstRecord=True);
let process = (iocs | where Type =~ "process" | project IoC);
let sha256Hashes = (iocs | where Type =~ "sha256" | project IoC);
let IPList = (iocs | where Type =~ "ip"| project IoC);
let domains = (iocs | where Type =~ "domainname"| 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 DestinationHostName has_any (domains) or RequestURL has_any (domains) 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", RequestURL has_any (domains), "RequestUrl", "NoMatch"), AlertDetail = 'Chia crypto IOC detected'
| extend timestamp = TimeGenerated, IPEntity = case(IPMatch == "SourceIP", SourceIP, IPMatch == "DestinationIP", DestinationIP, IPMatch == "Message", MessageIP, "NoMatch"), Account = SourceUserID
),
(DnsEvents
| where IPAddresses in (IPList) or Name in~ (domains)
| project TimeGenerated, Computer, IPAddresses, Name, ClientIP, Type
| extend DestinationIPAddress = IPAddresses, DNSName = Name, Computer
| extend timestamp = TimeGenerated, IPEntity = DestinationIPAddress
),
(VMConnection
| where SourceIp in (IPList) or DestinationIp in (IPList) or RemoteDnsCanonicalNames has_any (domains)
| 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
),
(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) or Image has_any (process)
| project TimeGenerated, SourceIP, DestinationIP, Image, Account = 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")
| extend FilePath = replace_string(Image, File, '')
),
(OfficeActivity
| where ClientIP in (IPList)
| project TimeGenerated, UserAgent, Operation, RecordType, UserId, ClientIP, Type
| extend timestamp = TimeGenerated, IPEntity = ClientIP, Account = UserId
),
(DeviceNetworkEvents
| where RemoteUrl has_any (domains) or RemoteIP in (IPList) or InitiatingProcessSHA256 in (sha256Hashes) or InitiatingProcessFileName has_any (process)
| project TimeGenerated, ActionType, DeviceId, Computer = DeviceName, InitiatingProcessAccountDomain, InitiatingProcessAccountName, InitiatingProcessCommandLine, InitiatingProcessFolderPath, InitiatingProcessId, InitiatingProcessParentFileName, InitiatingProcessFileName, RemoteIP, RemoteUrl, RemotePort, LocalIP, Type
| extend timestamp = TimeGenerated, IPEntity = RemoteIP
),
(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, Computer, IPEntity = case(IPMatch == "SourceIP", SourceIP, IPMatch == "DestinationIP", DestinationIP, "None")
),
(AzureDiagnostics
| where ResourceType == "AZUREFIREWALLS"
| where Category == "AzureFirewallDnsProxy"
| project TimeGenerated,Resource, msg_s, Type
| parse msg_s with "DNS Request: " ClientIP ":" ClientPort " - " QueryID " " Request_Type " " Request_Class " " Request_Name ". " Request_Protocol " " Request_Size " " EDNSO_DO " " EDNS0_Buffersize " " Responce_Code " " Responce_Flags " " Responce_Size " " Response_Duration
| where Request_Name has_any (domains) or ClientIP in (IPList)
| extend timestamp = TimeGenerated, DNSName = Request_Name, IPEntity = ClientIP
),
(AzureDiagnostics
| where ResourceType == "AZUREFIREWALLS"
| where Category == "AzureFirewallApplicationRule"
| project TimeGenerated,Resource, msg_s, Type
| parse msg_s with Protocol 'request from ' SourceHost ':' SourcePort 'to ' DestinationHost ':' DestinationPort '. Action:' Action
| where isnotempty(DestinationHost)
| where DestinationHost has_any (domains)
| extend timestamp = TimeGenerated, DNSName = DestinationHost, IPEntity = SourceHost
),
(AZFWApplicationRule
| where isnotempty (Fqdn)
| where Fqdn has_any (domains)
| extend timestamp = TimeGenerated
| extend DNSName = Fqdn
| extend IPEntity = SourceIp
),
(AZFWDnsQuery
| where isnotempty(QueryName)
| where QueryName has_any (domains) or SourceIp in (IPList)
| extend timestamp = TimeGenerated
| extend DNSName = QueryName
| extend IPEntity = SourceIp
),
(Event
| where Source == "Microsoft-Windows-Sysmon"
| extend EvData = parse_xml(EventData)
| extend EventDetail = EvData.DataItem.EventData.Data
| where EventDetail has_any (sha256Hashes)
| parse EventDetail with * 'SHA256=' SHA256 '",' *
| project TimeGenerated, EventDetail, UserName, Computer, Type, Source, SHA256
| extend Type = strcat(Type, ": ", Source), Account = UserName, FileHash = SHA256, Image = tostring(EventDetail.[4].["#text"])
| extend timestamp = TimeGenerated, Computer, Account, File = tostring(split(Image, '\\', -1)[-1]), FileHashAlgo = 'SHA256'
| extend FilePath = replace_string(Image, File, '')
),
(DeviceFileEvents
| where InitiatingProcessFolderPath has_any (process)
| project TimeGenerated, ActionType, DeviceId, DeviceName, InitiatingProcessAccountDomain, InitiatingProcessAccountName, InitiatingProcessCommandLine, InitiatingProcessFolderPath, InitiatingProcessId, InitiatingProcessParentFileName, InitiatingProcessFileName, RequestAccountName, RequestSourceIP, InitiatingProcessSHA256, Type
| extend Account = RequestAccountName, Computer = DeviceName, IPAddress = RequestSourceIP, CommandLine = InitiatingProcessCommandLine, FileHash = InitiatingProcessSHA256
| extend timestamp = TimeGenerated, Computer, Account, File = InitiatingProcessFileName, FileHashAlgo = 'SHA256'
| extend FilePath = replace_string(InitiatingProcessFolderPath, File, '')
),
(CommonSecurityLog
| where FileHash in (sha256Hashes)
| project TimeGenerated, Message, SourceUserID, FileHash, Type
| extend timestamp = TimeGenerated, FileHashAlgo = 'SHA256', Account = SourceUserID
),
(Event
| where Source == "Microsoft-Windows-Sysmon"
| where EventID == 1
| extend EvData = parse_xml(EventData)
| extend EventDetail = EvData.DataItem.EventData.Data
| project TimeGenerated, EventDetail, UserName, Computer, Type
| extend Image = tostring(EventDetail.[4].["#text"]), CommandLine = tostring(EventDetail.[10].["#text"]), Account = UserName, FileHash = tostring(EventDetail.[17].["#text"])
| where Image has_any (process)
| extend timestamp = TimeGenerated, Computer, Account, File = tostring(split(Image, '\\', -1)[-1]), FileHashAlgo = 'SHA256'
| extend FilePath= replace_string(Image, File, '')
),
(DeviceEvents
| where InitiatingProcessFileName has_any (process) or InitiatingProcessSHA256 in~ (sha256Hashes)
| project TimeGenerated, ActionType, DeviceId, DeviceName, InitiatingProcessAccountDomain, InitiatingProcessAccountName, InitiatingProcessCommandLine, InitiatingProcessFolderPath, InitiatingProcessId, InitiatingProcessParentFileName, InitiatingProcessFileName, InitiatingProcessSHA256, Type
| extend Account = InitiatingProcessAccountName, Computer = DeviceName, CommandLine = InitiatingProcessCommandLine, FileHash = InitiatingProcessSHA256, Image = InitiatingProcessFolderPath
| extend timestamp = TimeGenerated, Computer, Account, File = InitiatingProcessFileName, FileHashAlgo = 'SHA256'
| extend FilePath = replace_string(InitiatingProcessFolderPath, File, '')
),
(SecurityEvent
| where EventID == '4688'
| where NewProcessName has_any (process)
| project TimeGenerated, Computer, NewProcessName, ParentProcessName, Account, NewProcessId, Type
| extend timestamp = TimeGenerated, Computer, Account, File = tostring(split(NewProcessName, '\\', -1)[-1])
| extend FilePath = replace_string(NewProcessName, File, '')
)
)
| extend AccountCustomEntity = Account, HostCustomEntity = Computer, IPCustomEntity = IPEntity, FileCustomEntity = File, FilePathCustomEntity = FilePath, FileHashCustomEntity = FileHash
triggerOperator: gt
id: 595a10c9-91be-4abb-bbc7-ae9c57848bef
queryFrequency: 6h
entityMappings:
- entityType: Account
fieldMappings:
- columnName: AccountCustomEntity
identifier: FullName
- entityType: Host
fieldMappings:
- columnName: HostCustomEntity
identifier: FullName
- entityType: IP
fieldMappings:
- columnName: IPCustomEntity
identifier: Address
- entityType: File
fieldMappings:
- columnName: FileCustomEntity
identifier: Name
- columnName: FilePathCustomEntity
identifier: Directory
- entityType: FileHash
fieldMappings:
- columnName: FileHashAlgo
identifier: Algorithm
- columnName: FileHashCustomEntity
identifier: Value
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
- DeviceEvents
connectorId: MicrosoftThreatProtection
- dataTypes:
- SecurityEvent
connectorId: SecurityEvents
- dataTypes:
- OfficeActivity
connectorId: Office365
- dataTypes:
- AzureDiagnostics
- AZFWApplicationRule
- AZFWDnsQuery
connectorId: AzureFirewall
- dataTypes:
- WindowsFirewall
connectorId: WindowsFirewall
severity: Low
triggerThreshold: 0
kind: Scheduled
status: Available
queryPeriod: 6h
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Legacy IOC based Threat Protection/Analytic Rules/ChiaCryptoMining.yaml
query: |
let iocs = externaldata(DateAdded:string,IoC:string,Type:string,TLP:string) [@"https://raw.githubusercontent.com/Azure/Azure-Sentinel/master/Sample%20Data/Feeds/ChiaCryptoIOC.csv"] with (format="csv", ignoreFirstRecord=True);
let process = (iocs | where Type =~ "process" | project IoC);
let sha256Hashes = (iocs | where Type =~ "sha256" | project IoC);
let IPList = (iocs | where Type =~ "ip"| project IoC);
let domains = (iocs | where Type =~ "domainname"| 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 DestinationHostName has_any (domains) or RequestURL has_any (domains) 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", RequestURL has_any (domains), "RequestUrl", "NoMatch"), AlertDetail = 'Chia crypto IOC detected'
| extend timestamp = TimeGenerated, IPEntity = case(IPMatch == "SourceIP", SourceIP, IPMatch == "DestinationIP", DestinationIP, IPMatch == "Message", MessageIP, "NoMatch"), Account = SourceUserID
),
(DnsEvents
| where IPAddresses in (IPList) or Name in~ (domains)
| project TimeGenerated, Computer, IPAddresses, Name, ClientIP, Type
| extend DestinationIPAddress = IPAddresses, DNSName = Name, Computer
| extend timestamp = TimeGenerated, IPEntity = DestinationIPAddress
),
(VMConnection
| where SourceIp in (IPList) or DestinationIp in (IPList) or RemoteDnsCanonicalNames has_any (domains)
| 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
),
(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) or Image has_any (process)
| project TimeGenerated, SourceIP, DestinationIP, Image, Account = 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")
| extend FilePath = replace_string(Image, File, '')
),
(OfficeActivity
| where ClientIP in (IPList)
| project TimeGenerated, UserAgent, Operation, RecordType, UserId, ClientIP, Type
| extend timestamp = TimeGenerated, IPEntity = ClientIP, Account = UserId
),
(DeviceNetworkEvents
| where RemoteUrl has_any (domains) or RemoteIP in (IPList) or InitiatingProcessSHA256 in (sha256Hashes) or InitiatingProcessFileName has_any (process)
| project TimeGenerated, ActionType, DeviceId, Computer = DeviceName, InitiatingProcessAccountDomain, InitiatingProcessAccountName, InitiatingProcessCommandLine, InitiatingProcessFolderPath, InitiatingProcessId, InitiatingProcessParentFileName, InitiatingProcessFileName, RemoteIP, RemoteUrl, RemotePort, LocalIP, Type
| extend timestamp = TimeGenerated, IPEntity = RemoteIP
),
(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, Computer, IPEntity = case(IPMatch == "SourceIP", SourceIP, IPMatch == "DestinationIP", DestinationIP, "None")
),
(AzureDiagnostics
| where ResourceType == "AZUREFIREWALLS"
| where Category == "AzureFirewallDnsProxy"
| project TimeGenerated,Resource, msg_s, Type
| parse msg_s with "DNS Request: " ClientIP ":" ClientPort " - " QueryID " " Request_Type " " Request_Class " " Request_Name ". " Request_Protocol " " Request_Size " " EDNSO_DO " " EDNS0_Buffersize " " Responce_Code " " Responce_Flags " " Responce_Size " " Response_Duration
| where Request_Name has_any (domains) or ClientIP in (IPList)
| extend timestamp = TimeGenerated, DNSName = Request_Name, IPEntity = ClientIP
),
(AzureDiagnostics
| where ResourceType == "AZUREFIREWALLS"
| where Category == "AzureFirewallApplicationRule"
| project TimeGenerated,Resource, msg_s, Type
| parse msg_s with Protocol 'request from ' SourceHost ':' SourcePort 'to ' DestinationHost ':' DestinationPort '. Action:' Action
| where isnotempty(DestinationHost)
| where DestinationHost has_any (domains)
| extend timestamp = TimeGenerated, DNSName = DestinationHost, IPEntity = SourceHost
),
(AZFWApplicationRule
| where isnotempty (Fqdn)
| where Fqdn has_any (domains)
| extend timestamp = TimeGenerated
| extend DNSName = Fqdn
| extend IPEntity = SourceIp
),
(AZFWDnsQuery
| where isnotempty(QueryName)
| where QueryName has_any (domains) or SourceIp in (IPList)
| extend timestamp = TimeGenerated
| extend DNSName = QueryName
| extend IPEntity = SourceIp
),
(Event
| where Source == "Microsoft-Windows-Sysmon"
| extend EvData = parse_xml(EventData)
| extend EventDetail = EvData.DataItem.EventData.Data
| where EventDetail has_any (sha256Hashes)
| parse EventDetail with * 'SHA256=' SHA256 '",' *
| project TimeGenerated, EventDetail, UserName, Computer, Type, Source, SHA256
| extend Type = strcat(Type, ": ", Source), Account = UserName, FileHash = SHA256, Image = tostring(EventDetail.[4].["#text"])
| extend timestamp = TimeGenerated, Computer, Account, File = tostring(split(Image, '\\', -1)[-1]), FileHashAlgo = 'SHA256'
| extend FilePath = replace_string(Image, File, '')
),
(DeviceFileEvents
| where InitiatingProcessFolderPath has_any (process)
| project TimeGenerated, ActionType, DeviceId, DeviceName, InitiatingProcessAccountDomain, InitiatingProcessAccountName, InitiatingProcessCommandLine, InitiatingProcessFolderPath, InitiatingProcessId, InitiatingProcessParentFileName, InitiatingProcessFileName, RequestAccountName, RequestSourceIP, InitiatingProcessSHA256, Type
| extend Account = RequestAccountName, Computer = DeviceName, IPAddress = RequestSourceIP, CommandLine = InitiatingProcessCommandLine, FileHash = InitiatingProcessSHA256
| extend timestamp = TimeGenerated, Computer, Account, File = InitiatingProcessFileName, FileHashAlgo = 'SHA256'
| extend FilePath = replace_string(InitiatingProcessFolderPath, File, '')
),
(CommonSecurityLog
| where FileHash in (sha256Hashes)
| project TimeGenerated, Message, SourceUserID, FileHash, Type
| extend timestamp = TimeGenerated, FileHashAlgo = 'SHA256', Account = SourceUserID
),
(Event
| where Source == "Microsoft-Windows-Sysmon"
| where EventID == 1
| extend EvData = parse_xml(EventData)
| extend EventDetail = EvData.DataItem.EventData.Data
| project TimeGenerated, EventDetail, UserName, Computer, Type
| extend Image = tostring(EventDetail.[4].["#text"]), CommandLine = tostring(EventDetail.[10].["#text"]), Account = UserName, FileHash = tostring(EventDetail.[17].["#text"])
| where Image has_any (process)
| extend timestamp = TimeGenerated, Computer, Account, File = tostring(split(Image, '\\', -1)[-1]), FileHashAlgo = 'SHA256'
| extend FilePath= replace_string(Image, File, '')
),
(DeviceEvents
| where InitiatingProcessFileName has_any (process) or InitiatingProcessSHA256 in~ (sha256Hashes)
| project TimeGenerated, ActionType, DeviceId, DeviceName, InitiatingProcessAccountDomain, InitiatingProcessAccountName, InitiatingProcessCommandLine, InitiatingProcessFolderPath, InitiatingProcessId, InitiatingProcessParentFileName, InitiatingProcessFileName, InitiatingProcessSHA256, Type
| extend Account = InitiatingProcessAccountName, Computer = DeviceName, CommandLine = InitiatingProcessCommandLine, FileHash = InitiatingProcessSHA256, Image = InitiatingProcessFolderPath
| extend timestamp = TimeGenerated, Computer, Account, File = InitiatingProcessFileName, FileHashAlgo = 'SHA256'
| extend FilePath = replace_string(InitiatingProcessFolderPath, File, '')
),
(SecurityEvent
| where EventID == '4688'
| where NewProcessName has_any (process)
| project TimeGenerated, Computer, NewProcessName, ParentProcessName, Account, NewProcessId, Type
| extend timestamp = TimeGenerated, Computer, Account, File = tostring(split(NewProcessName, '\\', -1)[-1])
| extend FilePath = replace_string(NewProcessName, File, '')
)
)
| extend AccountCustomEntity = Account, HostCustomEntity = Computer, IPCustomEntity = IPEntity, FileCustomEntity = File, FilePathCustomEntity = FilePath, FileHashCustomEntity = FileHash
description: |
'Identifies a match across various data feeds for domains, process, hashes and IP IOC related to Chia cryptocurrency farming/plotting activity.'
name: Chia_Crypto_Mining - Domain, Process, Hash and IP IOCs - June 2021
relevantTechniques:
- T1496
tactics:
- Impact
version: 1.2.1
tags:
- Chia
{
"$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/595a10c9-91be-4abb-bbc7-ae9c57848bef')]",
"name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/595a10c9-91be-4abb-bbc7-ae9c57848bef')]",
"type": "Microsoft.OperationalInsights/workspaces/providers/alertRules",
"kind": "Scheduled",
"apiVersion": "2022-11-01",
"properties": {
"displayName": "Chia_Crypto_Mining - Domain, Process, Hash and IP IOCs - June 2021",
"description": "'Identifies a match across various data feeds for domains, process, hashes and IP IOC related to Chia cryptocurrency farming/plotting activity.'\n",
"severity": "Low",
"enabled": true,
"query": "let iocs = externaldata(DateAdded:string,IoC:string,Type:string,TLP:string) [@\"https://raw.githubusercontent.com/Azure/Azure-Sentinel/master/Sample%20Data/Feeds/ChiaCryptoIOC.csv\"] with (format=\"csv\", ignoreFirstRecord=True);\nlet process = (iocs | where Type =~ \"process\" | project IoC);\nlet sha256Hashes = (iocs | where Type =~ \"sha256\" | project IoC);\nlet IPList = (iocs | where Type =~ \"ip\"| project IoC);\nlet domains = (iocs | where Type =~ \"domainname\"| 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 DestinationHostName has_any (domains) or RequestURL has_any (domains) 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\", RequestURL has_any (domains), \"RequestUrl\", \"NoMatch\"), AlertDetail = 'Chia crypto IOC detected'\n| extend timestamp = TimeGenerated, IPEntity = case(IPMatch == \"SourceIP\", SourceIP, IPMatch == \"DestinationIP\", DestinationIP, IPMatch == \"Message\", MessageIP, \"NoMatch\"), Account = SourceUserID\n),\n(DnsEvents\n| where IPAddresses in (IPList) or Name in~ (domains) \n| project TimeGenerated, Computer, IPAddresses, Name, ClientIP, Type\n| extend DestinationIPAddress = IPAddresses, DNSName = Name, Computer\n| extend timestamp = TimeGenerated, IPEntity = DestinationIPAddress\n),\n(VMConnection\n| where SourceIp in (IPList) or DestinationIp in (IPList) or RemoteDnsCanonicalNames has_any (domains)\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\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) or Image has_any (process)\n| project TimeGenerated, SourceIP, DestinationIP, Image, Account = 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\")\n| extend FilePath = replace_string(Image, File, '')\n), \n(OfficeActivity\n| where ClientIP in (IPList) \n| project TimeGenerated, UserAgent, Operation, RecordType, UserId, ClientIP, Type\n| extend timestamp = TimeGenerated, IPEntity = ClientIP, Account = UserId\n),\n(DeviceNetworkEvents\n| where RemoteUrl has_any (domains) or RemoteIP in (IPList) or InitiatingProcessSHA256 in (sha256Hashes) or InitiatingProcessFileName has_any (process)\n| project TimeGenerated, ActionType, DeviceId, Computer = DeviceName, InitiatingProcessAccountDomain, InitiatingProcessAccountName, InitiatingProcessCommandLine, InitiatingProcessFolderPath, InitiatingProcessId, InitiatingProcessParentFileName, InitiatingProcessFileName, RemoteIP, RemoteUrl, RemotePort, LocalIP, Type\n| extend timestamp = TimeGenerated, IPEntity = RemoteIP\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, Computer, IPEntity = case(IPMatch == \"SourceIP\", SourceIP, IPMatch == \"DestinationIP\", DestinationIP, \"None\")\n),\n(AzureDiagnostics\n| where ResourceType == \"AZUREFIREWALLS\"\n| where Category == \"AzureFirewallDnsProxy\"\n| project TimeGenerated,Resource, msg_s, Type\n| parse msg_s with \"DNS Request: \" ClientIP \":\" ClientPort \" - \" QueryID \" \" Request_Type \" \" Request_Class \" \" Request_Name \". \" Request_Protocol \" \" Request_Size \" \" EDNSO_DO \" \" EDNS0_Buffersize \" \" Responce_Code \" \" Responce_Flags \" \" Responce_Size \" \" Response_Duration\n| where Request_Name has_any (domains) or ClientIP in (IPList)\n| extend timestamp = TimeGenerated, DNSName = Request_Name, IPEntity = ClientIP\n),\n(AzureDiagnostics \n| where ResourceType == \"AZUREFIREWALLS\"\n| where Category == \"AzureFirewallApplicationRule\"\n| project TimeGenerated,Resource, msg_s, Type\n| parse msg_s with Protocol 'request from ' SourceHost ':' SourcePort 'to ' DestinationHost ':' DestinationPort '. Action:' Action\n| where isnotempty(DestinationHost)\n| where DestinationHost has_any (domains) \n| extend timestamp = TimeGenerated, DNSName = DestinationHost, IPEntity = SourceHost\n),\n(AZFWApplicationRule\n| where isnotempty (Fqdn)\n| where Fqdn has_any (domains)\n| extend timestamp = TimeGenerated\n| extend DNSName = Fqdn\n| extend IPEntity = SourceIp\n),\n(AZFWDnsQuery\n| where isnotempty(QueryName)\n| where QueryName has_any (domains) or SourceIp in (IPList)\n| extend timestamp = TimeGenerated\n| extend DNSName = QueryName\n| extend IPEntity = SourceIp\n),\n(Event\n| where Source == \"Microsoft-Windows-Sysmon\"\n| extend EvData = parse_xml(EventData)\n| extend EventDetail = EvData.DataItem.EventData.Data\n| where EventDetail has_any (sha256Hashes) \n| parse EventDetail with * 'SHA256=' SHA256 '\",' *\n| project TimeGenerated, EventDetail, UserName, Computer, Type, Source, SHA256\n| extend Type = strcat(Type, \": \", Source), Account = UserName, FileHash = SHA256, Image = tostring(EventDetail.[4].[\"#text\"])\n| extend timestamp = TimeGenerated, Computer, Account, File = tostring(split(Image, '\\\\', -1)[-1]), FileHashAlgo = 'SHA256'\n| extend FilePath = replace_string(Image, File, '')\n),\n(DeviceFileEvents\n| where InitiatingProcessFolderPath has_any (process)\n| project TimeGenerated, ActionType, DeviceId, DeviceName, InitiatingProcessAccountDomain, InitiatingProcessAccountName, InitiatingProcessCommandLine, InitiatingProcessFolderPath, InitiatingProcessId, InitiatingProcessParentFileName, InitiatingProcessFileName, RequestAccountName, RequestSourceIP, InitiatingProcessSHA256, Type\n| extend Account = RequestAccountName, Computer = DeviceName, IPAddress = RequestSourceIP, CommandLine = InitiatingProcessCommandLine, FileHash = InitiatingProcessSHA256\n| extend timestamp = TimeGenerated, Computer, Account, File = InitiatingProcessFileName, FileHashAlgo = 'SHA256'\n| extend FilePath = replace_string(InitiatingProcessFolderPath, File, '')\n),\n(CommonSecurityLog\n| where FileHash in (sha256Hashes)\n| project TimeGenerated, Message, SourceUserID, FileHash, Type\n| extend timestamp = TimeGenerated, FileHashAlgo = 'SHA256', Account = SourceUserID\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| project TimeGenerated, EventDetail, UserName, Computer, Type\n| extend Image = tostring(EventDetail.[4].[\"#text\"]), CommandLine = tostring(EventDetail.[10].[\"#text\"]), Account = UserName, FileHash = tostring(EventDetail.[17].[\"#text\"])\n| where Image has_any (process)\n| extend timestamp = TimeGenerated, Computer, Account, File = tostring(split(Image, '\\\\', -1)[-1]), FileHashAlgo = 'SHA256'\n| extend FilePath= replace_string(Image, File, '')\n),\n(DeviceEvents\n| where InitiatingProcessFileName has_any (process) or InitiatingProcessSHA256 in~ (sha256Hashes)\n| project TimeGenerated, ActionType, DeviceId, DeviceName, InitiatingProcessAccountDomain, InitiatingProcessAccountName, InitiatingProcessCommandLine, InitiatingProcessFolderPath, InitiatingProcessId, InitiatingProcessParentFileName, InitiatingProcessFileName, InitiatingProcessSHA256, Type\n| extend Account = InitiatingProcessAccountName, Computer = DeviceName, CommandLine = InitiatingProcessCommandLine, FileHash = InitiatingProcessSHA256, Image = InitiatingProcessFolderPath\n| extend timestamp = TimeGenerated, Computer, Account, File = InitiatingProcessFileName, FileHashAlgo = 'SHA256'\n| extend FilePath = replace_string(InitiatingProcessFolderPath, File, '')\n),\n(SecurityEvent\n| where EventID == '4688'\n| where NewProcessName has_any (process)\n| project TimeGenerated, Computer, NewProcessName, ParentProcessName, Account, NewProcessId, Type\n| extend timestamp = TimeGenerated, Computer, Account, File = tostring(split(NewProcessName, '\\\\', -1)[-1])\n| extend FilePath = replace_string(NewProcessName, File, '')\n)\n)\n| extend AccountCustomEntity = Account, HostCustomEntity = Computer, IPCustomEntity = IPEntity, FileCustomEntity = File, FilePathCustomEntity = FilePath, FileHashCustomEntity = FileHash\n",
"queryFrequency": "PT6H",
"queryPeriod": "PT6H",
"triggerOperator": "GreaterThan",
"triggerThreshold": 0,
"suppressionDuration": "PT1H",
"suppressionEnabled": false,
"tactics": [
"Impact"
],
"techniques": [
"T1496"
],
"alertRuleTemplateName": "595a10c9-91be-4abb-bbc7-ae9c57848bef",
"customDetails": null,
"entityMappings": [
{
"fieldMappings": [
{
"identifier": "FullName",
"columnName": "AccountCustomEntity"
}
],
"entityType": "Account"
},
{
"fieldMappings": [
{
"identifier": "FullName",
"columnName": "HostCustomEntity"
}
],
"entityType": "Host"
},
{
"fieldMappings": [
{
"identifier": "Address",
"columnName": "IPCustomEntity"
}
],
"entityType": "IP"
},
{
"fieldMappings": [
{
"identifier": "Name",
"columnName": "FileCustomEntity"
},
{
"identifier": "Directory",
"columnName": "FilePathCustomEntity"
}
],
"entityType": "File"
},
{
"fieldMappings": [
{
"identifier": "Algorithm",
"columnName": "FileHashAlgo"
},
{
"identifier": "Value",
"columnName": "FileHashCustomEntity"
}
],
"entityType": "FileHash"
}
],
"OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Legacy IOC based Threat Protection/Analytic Rules/ChiaCryptoMining.yaml",
"templateVersion": "1.2.1",
"tags": [
"Chia"
],
"status": "Available"
}
}
]
}