Detection rules › Kusto
User account enabled and disabled within 10 mins
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.
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Persistence | T1078 Valid Accounts, T1098 Account Manipulation |
| Privilege Escalation | T1078 Valid Accounts, T1098 Account Manipulation |
Event coverage
| Provider | Event | Title |
|---|---|---|
| Security-Auditing | Event ID 4722 | A user account was enabled. |
| Security-Auditing | Event ID 4725 | A user account was disabled. |
Rule body kusto
id: 3d023f64-8225-41a2-9570-2bd7c2c4535e
name: 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
requiredDataConnectors:
- connectorId: SecurityEvents
dataTypes:
- SecurityEvent
- connectorId: WindowsSecurityEvents
dataTypes:
- SecurityEvents
- connectorId: WindowsForwardedEvents
dataTypes:
- WindowsEvent
queryFrequency: 1d
queryPeriod: 25h
triggerOperator: gt
triggerThreshold: 0
tactics:
- Persistence
- PrivilegeEscalation
relevantTechniques:
- T1098
- T1078
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
entityMappings:
- entityType: Account
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: Host
fieldMappings:
- identifier: FullName
columnName: Computer
- identifier: HostName
columnName: HostName
- identifier: NTDomain
columnName: HostNameDomain
version: 1.2.3
kind: Scheduled
metadata:
source:
kind: Community
author:
name: Microsoft Security Research
support:
tier: Community
categories:
domains: [ "Security - Others", "Identity" ]
Stages and Predicates
Parameters
let timeframe = 1d;
let spanoftime = 10m;
let threshold = 0;
union isfuzzy=true (2 sources)
Each leg below queries one source; the rule matches if any leg does. Sources: SecurityEvent, WindowsEvent
Leg 1: SecurityEvent
SecurityEvent
| where TimeGenerated > ago(timeframe+spanoftime)
| where EventID == 4722
| where AccountType =~ "User"
| where TargetAccount !endswith "$"
| project EnableTime = TimeGenerated, EnableEventID = EventID, EnableActivity = Activity, Computer = toupper(Computer),
TargetAccount = tolower(TargetAccount), TargetUserName, TargetDomainName, TargetSid,
AccountUsedToEnable = SubjectAccount, EnabledBySubjectUserName = SubjectUserName, EnabledBySubjectDomainName = SubjectDomainName, SIDofAccountUsedToEnable = SubjectUserSid, UserPrincipalName
Leg 2: WindowsEvent
WindowsEvent
| where TimeGenerated > ago(timeframe+spanoftime)
| where EventID == 4722
| extend SubjectUserSid = tostring(EventData.SubjectUserSid)
| extend AccountType=case(EventData.SubjectUserName endswith "$" 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 "$"
| extend Activity="4722 - A user account was enabled."
| extend TargetUserName = tostring(EventData.TargetUserName), TargetDomainName = tostring(EventData.TargetDomainName)
| extend TargetSid = tostring(EventData.TargetSid)
| extend UserPrincipalName = tostring(EventData.UserPrincipalName)
| project EnableTime = TimeGenerated, EnableEventID = EventID, EnableActivity = Activity, Computer = toupper(Computer),
TargetAccount = tolower(TargetAccount), TargetUserName, TargetDomainName, TargetSid,
AccountUsedToEnable = SubjectAccount, EnabledBySubjectUserName = SubjectUserName, EnabledBySubjectDomainName = SubjectDomainName, SIDofAccountUsedToEnable = SubjectUserSid, UserPrincipalName
Applied to the combined result
| join kind= inner (
(union isfuzzy=true
(SecurityEvent
| where TimeGenerated > ago(timeframe)
| where EventID == 4725
| where AccountType =~ "User"
| project DisableTime = TimeGenerated, DisableEventID = EventID, DisableActivity = Activity, Computer = toupper(Computer),
TargetAccount = tolower(TargetAccount), TargetUserName, TargetDomainName, TargetSid,
AccountUsedToDisable = SubjectAccount, DisabledBySubjectUserName = SubjectUserName, DisabledBySubjectDomainName = SubjectDomainName, SIDofAccountUsedToDisable = SubjectUserSid, UserPrincipalName
),
(WindowsEvent
| where TimeGenerated > ago(timeframe)
| where EventID == 4725
| extend SubjectUserSid = tostring(EventData.SubjectUserSid)
| extend AccountType=case(EventData.SubjectUserName endswith "$" 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
Exclusions
Top-level NOT(...) conjuncts: predicates this rule actively suppresses.
| Field | Kind | Excluded values |
|---|---|---|
TargetAccount | ends_with | $ |
TargetAccount | ends_with | $ |
Indicators
Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.
| Field | Kind | Values |
|---|---|---|
AccountType | eq |
|
EventID | eq |
|
TimeDelta | ge |
|
Output fields
Fields the rule emits when it matches. Chronicle authors list these in the outcome block; they appear on the detection and $risk_score drives alerting. Sentinel / Defender XDR rules build them up through project / summarize / extend stages. Sentinel maps these into alert fields via entityMappings and customDetails; Defender XDR custom detections surface them as alert fields directly.
| Field | Source |
|---|---|
AccountUsedToDisable | project |
AccountUsedToEnable | project |
Computer | project |
DisableActivity | project |
DisableEventID | project |
DisableTime | project |
DisabledBySubjectDomainName | project |
DisabledBySubjectUserName | project |
EnableActivity | project |
EnableEventID | project |
EnableTime | project |
EnabledBySubjectDomainName | project |
EnabledBySubjectUserName | project |
SIDofAccountUsedToDisable | project |
SIDofAccountUsedToEnable | project |
TargetAccount | project |
TargetDomainName | project |
TargetSid | project |
TargetUserName | project |
TimeDelta | project |
UserPrincipalName | project |
HostName | extend |
HostNameDomain | extend |