User account enabled and disabled within 10 mins
| Id | 3d023f64-8225-41a2-9570-2bd7c2c4535e |
| Rulename | User account enabled and disabled within 10 mins |
| Description | Identifies when a user account is enabled and then disabled within 10 minutes. This can be an indication of compromise and an adversary attempting to hide in the noise. |
| Severity | Medium |
| Tactics | Persistence PrivilegeEscalation |
| Techniques | T1098 T1078 |
| Required data connectors | SecurityEvents WindowsForwardedEvents WindowsSecurityEvents |
| Kind | Scheduled |
| Query frequency | 1d |
| Query period | 25h |
| Trigger threshold | 0 |
| Trigger operator | gt |
| Source Uri | https://github.com/Azure/Azure-Sentinel/blob/master/Detections/SecurityEvent/UserAccountEnabledDisabled_10m.yaml |
| Version | 1.2.3 |
| Arm template | 3d023f64-8225-41a2-9570-2bd7c2c4535e.json |
let timeframe = 1d;
let spanoftime = 10m;
let threshold = 0;
(union isfuzzy=true
(SecurityEvent
| where TimeGenerated > ago(timeframe+spanoftime)
// A user account was enabled
| where EventID == 4722
| where AccountType =~ "User"
| where TargetAccount !endswith "$"
| project EnableTime = TimeGenerated, EnableEventID = EventID, EnableActivity = Activity, Computer = toupper(Computer),
TargetAccount = tolower(TargetAccount), TargetUserName, TargetDomainName, TargetSid,
AccountUsedToEnable = SubjectAccount, EnabledBySubjectUserName = SubjectUserName, EnabledBySubjectDomainName = SubjectDomainName, SIDofAccountUsedToEnable = SubjectUserSid, UserPrincipalName
),
(
WindowsEvent
| where TimeGenerated > ago(timeframe+spanoftime)
// A user account was enabled
| where EventID == 4722
| extend SubjectUserSid = tostring(EventData.SubjectUserSid)
| extend AccountType=case(EventData.SubjectUserName endswith "$" or SubjectUserSid in ("S-1-5-18", "S-1-5-19", "S-1-5-20"), "Machine", isempty(SubjectUserSid), "", "User")
| where AccountType =~ "User"
| extend SubjectAccount = strcat(tostring(EventData.SubjectDomainName),"\\", tostring(EventData.SubjectUserName))
| extend SubjectDomainName = tostring(EventData.SubjectDomainName), SubjectUserName = tostring(EventData.SubjectUserName)
| extend TargetAccount = strcat(EventData.TargetDomainName,"\\", EventData.TargetUserName)
| where TargetAccount !endswith "$"
| extend Activity="4722 - A user account was enabled."
| extend TargetUserName = tostring(EventData.TargetUserName), TargetDomainName = tostring(EventData.TargetDomainName)
| extend TargetSid = tostring(EventData.TargetSid)
| extend UserPrincipalName = tostring(EventData.UserPrincipalName)
| project EnableTime = TimeGenerated, EnableEventID = EventID, EnableActivity = Activity, Computer = toupper(Computer),
TargetAccount = tolower(TargetAccount), TargetUserName, TargetDomainName, TargetSid,
AccountUsedToEnable = SubjectAccount, EnabledBySubjectUserName = SubjectUserName, EnabledBySubjectDomainName = SubjectDomainName, SIDofAccountUsedToEnable = SubjectUserSid, UserPrincipalName
)
)
| join kind= inner (
(union isfuzzy=true
(SecurityEvent
| where TimeGenerated > ago(timeframe)
// A user account was disabled
| where EventID == 4725
| where AccountType =~ "User"
| project DisableTime = TimeGenerated, DisableEventID = EventID, DisableActivity = Activity, Computer = toupper(Computer),
TargetAccount = tolower(TargetAccount), TargetUserName, TargetDomainName, TargetSid,
AccountUsedToDisable = SubjectAccount, DisabledBySubjectUserName = SubjectUserName, DisabledBySubjectDomainName = SubjectDomainName, SIDofAccountUsedToDisable = SubjectUserSid, UserPrincipalName
),
(WindowsEvent
| where TimeGenerated > ago(timeframe)
// A user account was disabled
| where EventID == 4725
| extend SubjectUserSid = tostring(EventData.SubjectUserSid)
| extend AccountType=case(EventData.SubjectUserName endswith "$" or SubjectUserSid in ("S-1-5-18", "S-1-5-19", "S-1-5-20"), "Machine", isempty(SubjectUserSid), "", "User")
| where AccountType =~ "User"
| extend SubjectAccount = strcat(tostring(EventData.SubjectDomainName),"\\", tostring(EventData.SubjectUserName))
| extend SubjectDomainName = tostring(EventData.SubjectDomainName), SubjectUserName = tostring(EventData.SubjectUserName)
| extend TargetAccount = strcat(EventData.TargetDomainName,"\\", EventData.TargetUserName)
| extend TargetUserName = tostring(EventData.TargetUserName), TargetDomainName = tostring(EventData.TargetDomainName)
| extend TargetSid = tostring(EventData.TargetSid)
| extend UserPrincipalName = tostring(EventData.UserPrincipalName)
| extend Activity = "4725 - A user account was disabled."
| project DisableTime = TimeGenerated, DisableEventID = EventID, DisableActivity = Activity, Computer = toupper(Computer),
TargetAccount = tolower(TargetAccount), TargetUserName, TargetDomainName, TargetSid,
AccountUsedToDisable = SubjectAccount, DisabledBySubjectUserName = SubjectUserName, DisabledBySubjectDomainName = SubjectDomainName, SIDofAccountUsedToDisable = SubjectUserSid, UserPrincipalName
)
)
) on Computer, TargetAccount
| where DisableTime - EnableTime < spanoftime
| extend TimeDelta = DisableTime - EnableTime
| where tolong(TimeDelta) >= threshold
| project TimeDelta, EnableTime, EnableEventID, EnableActivity, Computer, TargetAccount, TargetSid, TargetUserName, TargetDomainName, UserPrincipalName,
AccountUsedToEnable, SIDofAccountUsedToEnable, DisableTime, DisableEventID, DisableActivity, AccountUsedToDisable, SIDofAccountUsedToDisable,
EnabledBySubjectUserName, EnabledBySubjectDomainName, DisabledBySubjectUserName, DisabledBySubjectDomainName
| extend HostName = tostring(split(Computer, ".")[0]), DomainIndex = toint(indexof(Computer, '.'))
| extend HostNameDomain = iff(DomainIndex != -1, substring(Computer, DomainIndex + 1), Computer)
| project-away DomainIndex
relevantTechniques:
- T1098
- T1078
queryPeriod: 25h
tactics:
- Persistence
- PrivilegeEscalation
requiredDataConnectors:
- dataTypes:
- SecurityEvent
connectorId: SecurityEvents
- dataTypes:
- SecurityEvents
connectorId: WindowsSecurityEvents
- dataTypes:
- WindowsEvent
connectorId: WindowsForwardedEvents
triggerThreshold: 0
entityMappings:
- fieldMappings:
- identifier: FullName
columnName: AccountUsedToEnable
- identifier: Name
columnName: EnabledBySubjectUserName
- identifier: NTDomain
columnName: EnabledBySubjectDomainName
entityType: Account
- fieldMappings:
- identifier: FullName
columnName: AccountUsedToDisable
- identifier: Name
columnName: DisabledBySubjectUserName
- identifier: NTDomain
columnName: DisabledBySubjectDomainName
entityType: Account
- fieldMappings:
- identifier: FullName
columnName: TargetAccount
- identifier: Name
columnName: TargetUserName
- identifier: NTDomain
columnName: TargetDomainName
entityType: Account
- fieldMappings:
- identifier: Sid
columnName: TargetSid
entityType: Account
- fieldMappings:
- identifier: FullName
columnName: Computer
- identifier: HostName
columnName: HostName
- identifier: NTDomain
columnName: HostNameDomain
entityType: Host
name: User account enabled and disabled within 10 mins
query: |
let timeframe = 1d;
let spanoftime = 10m;
let threshold = 0;
(union isfuzzy=true
(SecurityEvent
| where TimeGenerated > ago(timeframe+spanoftime)
// A user account was enabled
| where EventID == 4722
| where AccountType =~ "User"
| where TargetAccount !endswith "$"
| project EnableTime = TimeGenerated, EnableEventID = EventID, EnableActivity = Activity, Computer = toupper(Computer),
TargetAccount = tolower(TargetAccount), TargetUserName, TargetDomainName, TargetSid,
AccountUsedToEnable = SubjectAccount, EnabledBySubjectUserName = SubjectUserName, EnabledBySubjectDomainName = SubjectDomainName, SIDofAccountUsedToEnable = SubjectUserSid, UserPrincipalName
),
(
WindowsEvent
| where TimeGenerated > ago(timeframe+spanoftime)
// A user account was enabled
| where EventID == 4722
| extend SubjectUserSid = tostring(EventData.SubjectUserSid)
| extend AccountType=case(EventData.SubjectUserName endswith "$" or SubjectUserSid in ("S-1-5-18", "S-1-5-19", "S-1-5-20"), "Machine", isempty(SubjectUserSid), "", "User")
| where AccountType =~ "User"
| extend SubjectAccount = strcat(tostring(EventData.SubjectDomainName),"\\", tostring(EventData.SubjectUserName))
| extend SubjectDomainName = tostring(EventData.SubjectDomainName), SubjectUserName = tostring(EventData.SubjectUserName)
| extend TargetAccount = strcat(EventData.TargetDomainName,"\\", EventData.TargetUserName)
| where TargetAccount !endswith "$"
| extend Activity="4722 - A user account was enabled."
| extend TargetUserName = tostring(EventData.TargetUserName), TargetDomainName = tostring(EventData.TargetDomainName)
| extend TargetSid = tostring(EventData.TargetSid)
| extend UserPrincipalName = tostring(EventData.UserPrincipalName)
| project EnableTime = TimeGenerated, EnableEventID = EventID, EnableActivity = Activity, Computer = toupper(Computer),
TargetAccount = tolower(TargetAccount), TargetUserName, TargetDomainName, TargetSid,
AccountUsedToEnable = SubjectAccount, EnabledBySubjectUserName = SubjectUserName, EnabledBySubjectDomainName = SubjectDomainName, SIDofAccountUsedToEnable = SubjectUserSid, UserPrincipalName
)
)
| join kind= inner (
(union isfuzzy=true
(SecurityEvent
| where TimeGenerated > ago(timeframe)
// A user account was disabled
| where EventID == 4725
| where AccountType =~ "User"
| project DisableTime = TimeGenerated, DisableEventID = EventID, DisableActivity = Activity, Computer = toupper(Computer),
TargetAccount = tolower(TargetAccount), TargetUserName, TargetDomainName, TargetSid,
AccountUsedToDisable = SubjectAccount, DisabledBySubjectUserName = SubjectUserName, DisabledBySubjectDomainName = SubjectDomainName, SIDofAccountUsedToDisable = SubjectUserSid, UserPrincipalName
),
(WindowsEvent
| where TimeGenerated > ago(timeframe)
// A user account was disabled
| where EventID == 4725
| extend SubjectUserSid = tostring(EventData.SubjectUserSid)
| extend AccountType=case(EventData.SubjectUserName endswith "$" or SubjectUserSid in ("S-1-5-18", "S-1-5-19", "S-1-5-20"), "Machine", isempty(SubjectUserSid), "", "User")
| where AccountType =~ "User"
| extend SubjectAccount = strcat(tostring(EventData.SubjectDomainName),"\\", tostring(EventData.SubjectUserName))
| extend SubjectDomainName = tostring(EventData.SubjectDomainName), SubjectUserName = tostring(EventData.SubjectUserName)
| extend TargetAccount = strcat(EventData.TargetDomainName,"\\", EventData.TargetUserName)
| extend TargetUserName = tostring(EventData.TargetUserName), TargetDomainName = tostring(EventData.TargetDomainName)
| extend TargetSid = tostring(EventData.TargetSid)
| extend UserPrincipalName = tostring(EventData.UserPrincipalName)
| extend Activity = "4725 - A user account was disabled."
| project DisableTime = TimeGenerated, DisableEventID = EventID, DisableActivity = Activity, Computer = toupper(Computer),
TargetAccount = tolower(TargetAccount), TargetUserName, TargetDomainName, TargetSid,
AccountUsedToDisable = SubjectAccount, DisabledBySubjectUserName = SubjectUserName, DisabledBySubjectDomainName = SubjectDomainName, SIDofAccountUsedToDisable = SubjectUserSid, UserPrincipalName
)
)
) on Computer, TargetAccount
| where DisableTime - EnableTime < spanoftime
| extend TimeDelta = DisableTime - EnableTime
| where tolong(TimeDelta) >= threshold
| project TimeDelta, EnableTime, EnableEventID, EnableActivity, Computer, TargetAccount, TargetSid, TargetUserName, TargetDomainName, UserPrincipalName,
AccountUsedToEnable, SIDofAccountUsedToEnable, DisableTime, DisableEventID, DisableActivity, AccountUsedToDisable, SIDofAccountUsedToDisable,
EnabledBySubjectUserName, EnabledBySubjectDomainName, DisabledBySubjectUserName, DisabledBySubjectDomainName
| extend HostName = tostring(split(Computer, ".")[0]), DomainIndex = toint(indexof(Computer, '.'))
| extend HostNameDomain = iff(DomainIndex != -1, substring(Computer, DomainIndex + 1), Computer)
| project-away DomainIndex
queryFrequency: 1d
id: 3d023f64-8225-41a2-9570-2bd7c2c4535e
severity: Medium
description: |
'Identifies when a user account is enabled and then disabled within 10 minutes. This can be an indication of compromise and an adversary attempting to hide in the noise.'
metadata:
source:
kind: Community
categories:
domains:
- Security - Others
- Identity
support:
tier: Community
author:
name: Microsoft Security Research
version: 1.2.3
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Detections/SecurityEvent/UserAccountEnabledDisabled_10m.yaml
kind: Scheduled
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": "2023-02-01-preview",
"id": "[concat(resourceId('Microsoft.OperationalInsights/workspaces/providers', parameters('workspace'), 'Microsoft.SecurityInsights'),'/alertRules/3d023f64-8225-41a2-9570-2bd7c2c4535e')]",
"kind": "Scheduled",
"name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/3d023f64-8225-41a2-9570-2bd7c2c4535e')]",
"properties": {
"alertRuleTemplateName": "3d023f64-8225-41a2-9570-2bd7c2c4535e",
"customDetails": null,
"description": "'Identifies when a user account is enabled and then disabled within 10 minutes. This can be an indication of compromise and an adversary attempting to hide in the noise.'\n",
"displayName": "User account enabled and disabled within 10 mins",
"enabled": true,
"entityMappings": [
{
"entityType": "Account",
"fieldMappings": [
{
"columnName": "AccountUsedToEnable",
"identifier": "FullName"
},
{
"columnName": "EnabledBySubjectUserName",
"identifier": "Name"
},
{
"columnName": "EnabledBySubjectDomainName",
"identifier": "NTDomain"
}
]
},
{
"entityType": "Account",
"fieldMappings": [
{
"columnName": "AccountUsedToDisable",
"identifier": "FullName"
},
{
"columnName": "DisabledBySubjectUserName",
"identifier": "Name"
},
{
"columnName": "DisabledBySubjectDomainName",
"identifier": "NTDomain"
}
]
},
{
"entityType": "Account",
"fieldMappings": [
{
"columnName": "TargetAccount",
"identifier": "FullName"
},
{
"columnName": "TargetUserName",
"identifier": "Name"
},
{
"columnName": "TargetDomainName",
"identifier": "NTDomain"
}
]
},
{
"entityType": "Account",
"fieldMappings": [
{
"columnName": "TargetSid",
"identifier": "Sid"
}
]
},
{
"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/SecurityEvent/UserAccountEnabledDisabled_10m.yaml",
"query": "let timeframe = 1d;\nlet spanoftime = 10m;\nlet threshold = 0;\n (union isfuzzy=true\n (SecurityEvent\n | where TimeGenerated > ago(timeframe+spanoftime)\n // A user account was enabled\n | where EventID == 4722\n | where AccountType =~ \"User\"\n | where TargetAccount !endswith \"$\"\n | project EnableTime = TimeGenerated, EnableEventID = EventID, EnableActivity = Activity, Computer = toupper(Computer), \n TargetAccount = tolower(TargetAccount), TargetUserName, TargetDomainName, TargetSid, \n AccountUsedToEnable = SubjectAccount, EnabledBySubjectUserName = SubjectUserName, EnabledBySubjectDomainName = SubjectDomainName, SIDofAccountUsedToEnable = SubjectUserSid, UserPrincipalName\n ),\n (\n WindowsEvent\n | where TimeGenerated > ago(timeframe+spanoftime)\n // A user account was enabled\n | where EventID == 4722\n | extend SubjectUserSid = tostring(EventData.SubjectUserSid)\n | extend AccountType=case(EventData.SubjectUserName endswith \"$\" or SubjectUserSid in (\"S-1-5-18\", \"S-1-5-19\", \"S-1-5-20\"), \"Machine\", isempty(SubjectUserSid), \"\", \"User\")\n | where AccountType =~ \"User\"\n | extend SubjectAccount = strcat(tostring(EventData.SubjectDomainName),\"\\\\\", tostring(EventData.SubjectUserName))\n | extend SubjectDomainName = tostring(EventData.SubjectDomainName), SubjectUserName = tostring(EventData.SubjectUserName)\n | extend TargetAccount = strcat(EventData.TargetDomainName,\"\\\\\", EventData.TargetUserName)\n | where TargetAccount !endswith \"$\"\n | extend Activity=\"4722 - A user account was enabled.\"\n | extend TargetUserName = tostring(EventData.TargetUserName), TargetDomainName = tostring(EventData.TargetDomainName) \n | extend TargetSid = tostring(EventData.TargetSid)\n | extend UserPrincipalName = tostring(EventData.UserPrincipalName)\n | project EnableTime = TimeGenerated, EnableEventID = EventID, EnableActivity = Activity, Computer = toupper(Computer), \n TargetAccount = tolower(TargetAccount), TargetUserName, TargetDomainName, TargetSid, \n AccountUsedToEnable = SubjectAccount, EnabledBySubjectUserName = SubjectUserName, EnabledBySubjectDomainName = SubjectDomainName, SIDofAccountUsedToEnable = SubjectUserSid, UserPrincipalName\n )\n )\n| join kind= inner (\n (union isfuzzy=true\n (SecurityEvent\n | where TimeGenerated > ago(timeframe)\n // A user account was disabled\n | where EventID == 4725\n | where AccountType =~ \"User\"\n | project DisableTime = TimeGenerated, DisableEventID = EventID, DisableActivity = Activity, Computer = toupper(Computer), \n TargetAccount = tolower(TargetAccount), TargetUserName, TargetDomainName, TargetSid, \n AccountUsedToDisable = SubjectAccount, DisabledBySubjectUserName = SubjectUserName, DisabledBySubjectDomainName = SubjectDomainName, SIDofAccountUsedToDisable = SubjectUserSid, UserPrincipalName\n ),\n (WindowsEvent\n | where TimeGenerated > ago(timeframe)\n // A user account was disabled\n | where EventID == 4725\n | extend SubjectUserSid = tostring(EventData.SubjectUserSid)\n | extend AccountType=case(EventData.SubjectUserName endswith \"$\" or SubjectUserSid in (\"S-1-5-18\", \"S-1-5-19\", \"S-1-5-20\"), \"Machine\", isempty(SubjectUserSid), \"\", \"User\")\n | where AccountType =~ \"User\"\n | extend SubjectAccount = strcat(tostring(EventData.SubjectDomainName),\"\\\\\", tostring(EventData.SubjectUserName))\n | extend SubjectDomainName = tostring(EventData.SubjectDomainName), SubjectUserName = tostring(EventData.SubjectUserName)\n | extend TargetAccount = strcat(EventData.TargetDomainName,\"\\\\\", EventData.TargetUserName)\n | extend TargetUserName = tostring(EventData.TargetUserName), TargetDomainName = tostring(EventData.TargetDomainName) \n | extend TargetSid = tostring(EventData.TargetSid)\n | extend UserPrincipalName = tostring(EventData.UserPrincipalName)\n | extend Activity = \"4725 - A user account was disabled.\"\n | project DisableTime = TimeGenerated, DisableEventID = EventID, DisableActivity = Activity, Computer = toupper(Computer), \n TargetAccount = tolower(TargetAccount), TargetUserName, TargetDomainName, TargetSid, \n AccountUsedToDisable = SubjectAccount, DisabledBySubjectUserName = SubjectUserName, DisabledBySubjectDomainName = SubjectDomainName, SIDofAccountUsedToDisable = SubjectUserSid, UserPrincipalName\n )\n )\n) on Computer, TargetAccount\n| where DisableTime - EnableTime < spanoftime\n| extend TimeDelta = DisableTime - EnableTime\n| where tolong(TimeDelta) >= threshold\n| project TimeDelta, EnableTime, EnableEventID, EnableActivity, Computer, TargetAccount, TargetSid, TargetUserName, TargetDomainName, UserPrincipalName, \nAccountUsedToEnable, SIDofAccountUsedToEnable, DisableTime, DisableEventID, DisableActivity, AccountUsedToDisable, SIDofAccountUsedToDisable, \nEnabledBySubjectUserName, EnabledBySubjectDomainName, DisabledBySubjectUserName, DisabledBySubjectDomainName\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": "PT25H",
"severity": "Medium",
"suppressionDuration": "PT1H",
"suppressionEnabled": false,
"tactics": [
"Persistence",
"PrivilegeEscalation"
],
"techniques": [
"T1078",
"T1098"
],
"templateVersion": "1.2.3",
"triggerOperator": "GreaterThan",
"triggerThreshold": 0
},
"type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
}
]
}