NY DFS – AI Engine Rules

AI Engine Rule Name

Rule Description

Corresponding Investigation

Augment Requirements

Alarming

Notification Area / Classification

Log Source

Rule ID

CCF: Data Exfiltration Observed

External attack or compromise followed by data leaving the same system.

CCF: LogRhythm Data Loss Defender Log Inv

500.05, 500.06, 500.09, 500.11, 500.14, 500.15, 500.16, 500.17

No

Security : Compromise

1. Include All Log Sources

2. Include All Log Sources

1193

CCF: Disabled Account Auth Success

Recently disabled or deleted account authenticates or accesses resources on the network.

N/A

500.05, 500.06, 500.07, 500.09, 500.11, 500.14, 500.16, 500.17

No

Security : Compromise

1. Include All Log Sources

2. Include All Log Sources

1194

CCF: Large Outbound Transfer

Single host is seen sending over 1GB of data within 30 minutes out of the network.

N/A

500.05, 500.06, 500.07, 500.09, 500.11, 500.13, 500.14, 500.15, 500.16, 500.17

No

Security : Compromise

Include All Log Sources

1195

CCF: Local Account Created and Used

An account is created on a host and then used shortly thereafter on the same host.

N/A

500.05, 500.06, 500.07, 500.09, 500.11, 500.14, 500.15, 500.16, 500.17

No

Security : Compromise

1. Include All Log Sources

2. Include All Log Sources

1196

CCF: External Brute Force Auths

Successful authentication after multiple failed attempts from different external origin hosts to the same impacted host.

N/A

500.05, 500.06, 500.09, 500.14, 500.16, 500.17

No

Security : Compromise

1. Include All Log Sources

2. Include All Log Sources

1197

CCF: Auth After Numerous Failed Auths

Multiple external unique login attempts are seen on the same impacted host within a short period of time, followed by a successful authentication.

N/A

500.05, 500.06, 500.07, 500.09, 500.11, 500.14, 500.15, 500.16, 500.17

No

Security : Compromise

1. Include All Log Sources

2. Include All Log Sources

1199

CCF: Auth After Security Event

An observed attack, compromise, or other security event followed by successful access or authentication from the attacking host.

N/A

500.05, 500.06, 500.07, 500.09, 500.11, 500.14, 500.15, 500.16, 500.17

No

Security : Compromise

1. Include All Log Sources

2. Include All Log Sources

1200

CCF: Corroborated Data Access Anomalies

2 or more unique behavioral anomalies for data within a 3 hour periods. The alarm requires rule IDs 300-302 be turned on for this alarm to trigger.

CCF: Suspicious Users Inv

500.05, 500.06, 500.07, 500.09, 500.11, 500.14, 500.15, 500.16, 500.17

No

Security : Compromise

Include All Log Sources

1201

CCF: Data Destruction

Attack event followed by a FIM delete/modify event on the same host.

CCF: LogRhythm Data Loss Defender Log Inv

500.05, 500.06, 500.09, 500.11, 500.14, 500.15, 500.16, 500.17

No

Security : Compromise

Include All Log Sources

1202

CCF: Distributed Brute Force

A successful brute force authentication -- multiple failed authentication attempts from different external hosts to the same host using the same origin login, followed by an authentication success.

N/A

500.05, 500.06, 500.09, 500.14, 500.16, 500.17

No

Security : Compromise

Include All Log Sources

1203

CCF: Blacklist Location Auth

Authentication success from a blacklisted location.

N/A

500.05, 500.06, 500.07, 500.09, 500.11, 500.14, 500.15, 500.16, 500.17

No

Security : Compromise

Include All Log Sources

1204

CCF: Concurrent VPN from Multiple Locations

Multiple VPN authentication successes from the same origin login are observed from different regions within a given time period (default 3 hours).

N/A

500.05, 500.06, 500.07, 500.09, 500.11, 500.14, 500.15, 500.16, 500.17

No

Security : Compromise

Include All Log Sources

1205

CCF: Critical Event After Attack

An external attack or compromise followed by a critical event on the same host.

Action: This alarm can identify when an error message is generated as the result of a successful attack. This can be unexpected process termination or a hardware fail

N/A

500.05, 500.06, 500.07, 500.09, 500.11, 500.14, 500.15, 500.16, 500.17

No

Security : Compromise

1. Include All Log Sources

2. Include All Log Sources

1206

CCF: Corroborated Account Anomalies

3 or more unique behavioral anomalies for a given user within a 3 hour period. This rule requires Rule IDs 285 - 289 be turned on.

Use Case : An account has been compromised.

CCF: Suspicious Users Inv

500.05, 500.06, 500.07, 500.09, 500.11, 500.14, 500.15, 500.16, 500.17

No

Security : Compromise

Include All Log Sources

1207

CCF: Abnormal Origin Location

First tracks geographic locations for VPN logins. Afterwards, triggers when a new origin location is seen for a user.

N/A

500.05, 500.06, 500.07, 500.09, 500.11, 500.14, 500.15, 500.16, 500.17

No

Security : Attack

1. Include All Log Sources

2. Include All Log Sources

1208

CCF: LogRhythm Silent Log Source Error Alarm

This AIE Rule creates an alert and provides information when a LogRhythm Log Source has not received logs from a critical or production server-system during the defined error period.

CCF: Audit Log Inv

500.05, 500.06, 500.07, 500.09, 500.11, 500.13, 500.14, 500.15, 500.16, 500.17

Yes

Operations : Warning

Include All Log Sources

1209

CCF: PRD Envir Config/Policy Change Alarm

This AIE rule creates an alert any time a configuration or policy modification logs are received from a critical or production environment (entity structure).

CCF: Config/Policy Change Inv

500.05, 500.06, 500.07, 500.09, 500.14, 500.15, 500.16, 500.17

Yes

Audit : Policy

CCF: Production Servers

1210

CCF: Attack then External Connection

An observed external attack or compromise followed by data leaving the system and going to the attacker.

N/A

500.05, 500.06, 500.07, 500.09, 500.14, 500.15, 500.16, 500.17

No

Security : Compromise

1. Include All Log Sources

2. Include All Log Sources

1211

CCF: Critical/PRD Envir Patch Failure Alarm

This AIE rule creates an alert any time a patch fails to apply to the critical or production environments (entity structure).

CCF: Critical Environment Error Inv

500.05, 500.06, 500.07, 500.09, 500.14, 500.15, 500.16, 500.17

Yes

Operations : Error

Include All Log Sources

1212

CCF: PRD Envir Signature Failure Alarm

This AIE Rule creates an alert on signature update failures on critical or production environments (entity structure).

N/A

500.05, 500.06, 500.07, 500.09, 500.14, 500.15, 500.16, 500.17

Yes

Operations : Error

Include All Log Sources

1213

CCF: Config Change After Attack

Attack event on a host followed by a configuration change made to that host within 3 minutes.

CCF: Config/Policy Change Inv

500.05, 500.06, 500.09, 500.14, 500.15, 500.16, 500.17

No

Security : Compromise

1. Include All Log Sources

2. Include All Log Sources

1214

CCF: Time Sync Error Alarm

This AIE Rule creates an event and alerts for any time sync errors occurring on any Log Source.

CCF: Time Sync Error Inv

500.05, 500.06, 500.07, 500.09, 500.11, 500.13, 500.14, 500.15, 500.16, 500.17

Yes

Operations : Warning

Include All Log Sources

1215

CCF: Config Change then Critical Error

Configuration change followed by a critical error on the same host indicating an erroneous configuration, malicious intent or otherwise.

N/A

500.05, 500.06, 500.09, 500.14, 500.15, 500.16, 500.17

No

Security : Compromise

1. Include All Log Sources

2. Include All Log Sources

1216

CCF: Malware Alarm

This AIE Rule provides details on malware activity across the organization's environment where malware detection/prevention is applied.

CCF: Malware Detected Inv

500.05, 500.06, 500.09, 500.14, 500.16, 500.17

Yes

Security : Malware

Include All Log Sources

1217

CCF: Vulnerability Detected Alarm

This AIE Rule alerts on the occurrence of vulnerabilities or suspicious events across the organization's environment.

CCF: Vulnerability Detected Inv

500.05, 500.06, 500.07, 500.09, 500.14, 500.16, 500.17

Yes

Security : Vulnerability

Include All Log Sources

1218

CCF: Config Deleted/Disabled

Configuration deleted or disabled within the organization infrastructure.  

CCF: Config/Policy Change Inv

500.05, 500.06, 500.09, 500.14, 500.15, 500.16, 500.17

No

Security : Compromise

CCF: Production Servers

1219

CCF: Rogue Access Point Alarm

This AIE Rule alerts on the occurrence of any rogue access point detection events against the organization's environment.

CCF: Rogue Access Point Inv

500.05, 500.06, 500.07, 500.09, 500.11, 500.14, 500.16, 500.17

Yes

Security : Suspicious

Include All Log Sources

1220

CCF: Config Modified

Configuration modified within the organization infrastructure.

CCF: Config/Policy Change Inv

500.05, 500.06, 500.07, 500.09, 500.14, 500.15, 500.17

No

Security : Compromise

Include All Log Sources

1221

CCF: Non-Encrypted Protocol Alarm

This investigation provides details of unencrypted applications being utilized within the critical and production systems or environments (entity structure).

CCF: Use Of Non-Encrypted Protocols Inv

500.05, 500.06, 500.07, 500.09, 500.14, 500.15, 500.16, 500.17

Yes

Operations : Information

Include All Log Sources

1222

CCF: Suspected Wireless Attack Alarm

This AIE Rule creates an event and alerts on suspected wireless attacks (success/failure) against the boundary monitoring devices.

CCF: Suspected Wireless Attack Inv

500.05, 500.06, 500.07, 500.09, 500.14, 500.16, 500.17

Yes

Security : Attack

CCF: Wireless IDS

1223

CCF: FIM Information

This AIE Rule creates events for general file integrity monitoring information.

N/A

500.05, 500.06, 500.09, 500.14, 500.15, 500.16, 500.17

No

Operations : Information

Include All Log Sources

1229

CCF: Abnormal Amount of Data Transferred

This rule alerts whenever a significant change (400% increase or 75% decrease) in Bytes In or Bytes Out from a specific host.

N/A

500.05, 500.06, 500.07, 500.09, 500.11, 500.13, 500.14, 500.15, 500.16, 500.17

No

Operations : Warning

1. Include All Log Sources

2. Include All Log Sources

1230

CCF: Misuse

This AIE Rule provides details on misuse activity.

CCF: User Misuse Inv

500.05, 500.06, 500.07, 500.09, 500.11, 500.14, 500.15, 500.16, 500.17

No

Security : Misuse

Include All Log Sources

1231

CCF: Data Loss Prevention

This AIE Rule provides details of data generated by the LogRhythm Data Loss Defender or other data loss prevention solutions, when configured.

CCF: LogRhythm Data Loss Defender Log Inv

500.05, 500.06, 500.09, 500.11, 500.14, 500.15, 500.16, 500.17

No

Operations : Information

Include All Log Sources

1232

CCF: FIM Abnormal Activity

This AIE Rule creates events for all abnormal file integrity monitoring activity.

N/A

500.05, 500.06, 500.09, 500.13, 500.14, 500.15, 500.16, 500.17

No

Security : Suspicious

1. Include All Log Sources

2. Include All Log Sources

1233

CCF: FIM Add Activity

This AIE Rule creates events for all file integrity monitoring add activity.

N/A

500.05, 500.06, 500.09, 500.13, 500.14, 500.15, 500.16, 500.17

No

Security : Activity

Include All Log Sources

1234

CCF: FIM Delete Activity Alarm

This AIE Rule alarms on file integrity monitoring delete activity.

N/A

500.05, 500.06, 500.09, 500.13, 500.14, 500.15, 500.16, 500.17

Yes

Security : Activity

Include All Log Sources

1235

CCF: Backup Failure Alarm

More than 10 backup failure events are detected.

CCF: Backup Activity Inv

500.05, 500.06, 500.09, 500.13, 500.14, 500.15, 500.16, 500.17

Yes

Operations : Error

Include All Log Sources

1236

CCF: Backup Information

This AIE Rule creates events for information from backup software.

CCF: Backup Activity Inv

500.05, 500.06, 500.09, 500.13, 500.14, 500.16, 500.17

No

Operations : Information

Include All Log Sources

1237

CCF: Early TLS/SSL Alarm

This AIE Rule alerts on the occurrence of any identified TLS LogRhythm Network Monitor event.

N/A

500.05, 500.06, 500.07, 500.09, 500.14, 500.15, 500.16, 500.17

Yes

Security : Activity

Include All Log Sources

1238

CCF: FIM General Activity

This rule creates an event fir file integrity monitoring activity including adds, deletes, modifies, group changes, owner changes, and permissions. The FIM log source can be established from LogRhythm's FIM or other FIM solutions.

N/A

500.05, 500.06, 500.09, 500.13, 500.14, 500.15, 500.16, 500.17

No

Operations : Information

Include All Log Sources

1239

CCF: GeoIP General Activity

This rule is designed to use with the Data Processor's GeoIP functionality, to represent general GeoIP activity.

CCF: GeoIP Inv

500.05, 500.06, 500.07, 500.09, 500.11, 500.14, 500.15, 500.16, 500.17

No

Security : Suspicious

Include All Log Sources

1240

CCF: GeoIP Blacklisted Region Activity

This rule tracks activity associated with Blacklisted Regions (list).

CCF: GeoIP Inv

500.05, 500.06, 500.07, 500.09, 500.11, 500.14, 500.15, 500.16, 500.17

No

Security : Suspicious

Include All Log Sources

1241

CCF: Social Media Event

This rule tracks social media activity, to help identify if private or personal data that should not be in transmission is present within the environment's traffic.

CCF: Social Media Inv

500.05, 500.06, 500.07, 500.09, 500.14, 500.15, 500.16, 500.17

No

Security : Suspicious

Include All Log Sources

1242

CCF: Unknown User Account Alarm

This rule identifies activity originating from unknown user accounts, based off of the CCF user lists.

CCF: Unknown User Account Inv

500.05, 500.06, 500.07, 500.09, 500.11, 500.14, 500.15, 500.16, 500.17

Yes

Security : Suspicious

Include All Log Sources

1243

CCF: Windows RunAs Privilege Escalation

User not in the LogRhythm List "Privileged Users" chooses to Run a Windows program as an administrator using the "Run as administrator" option.

CCF: Privileged Account Escalation Inv

500.05, 500.06, 500.07, 500.09, 500.11, 500.14, 500.15, 500.16, 500.17

No

Security : Suspicious

Include All Log Sources

1321

CCF: Priv Group Access Granted Alarm

This AIE Rule provides details on access granted to privileged groups (administrators, dnsadmins, domain admins, enterprise admins, schema admins) within the organization infrastructure.

CCF: Privileged Account Modification Inv

500.05, 500.06, 500.07, 500.09, 500.11, 500.14, 500.15, 500.16, 500.17

Yes

Audit: Access Granted

Include All Log Sources

1324

CCF: Password Modified by Admin

Privileged user changes the password of another account.

CCF: Password Modified Inv

500.05, 500.06, 500.07, 500.09, 500.11, 500.14, 500.15, 500.16, 500.17

No

Security : Suspicious

Include All Log Sources

1325

CCF: Admin Password Modified

User changes the password of a different privileged user account.

CCF: Password Modified Inv

500.05, 500.06, 500.07, 500.09, 500.11, 500.14, 500.15, 500.16, 500.17

No

Security: Suspicious

Include All Log Sources

1326

CCF: Multiple Account Passwords Modified by Admin

An observed login by a user in the privileged user list followed by the change of two or more other account passwords.

CCF: Password Modified Inv

500.05, 500.06, 500.07, 500.09, 500.14, 500.15, 500.16, 500.17

No

Security : Suspicious

Include All Log Sources

1327

CCF: Audit Logging Stopped Alarm

This AIE Rule provides details on audit logging being stopped.

CCF: Audit Log Inv

500.05, 500.06, 500.07, 500.09, 500.11, 500.13, 500.14, 500.15, 500.16, 500.17

Yes

Audit : Configuration

Include All Log Sources

1328

CCF: Privilege Escalation After Attack Alarm

Compromised host event followed by a new account created or account modified on the same host.

CCF: Privileged Account Modification Inv

500.05, 500.06, 500.07, 500.09, 500.11, 500.14, 500.15, 500.16, 500.17

Yes

Security : Suspicious

Include All Log Sources

1329

CCF: Linux sudo Privilege Escalation

User not in the LogRhythm list "CCF: Privileged Accounts" and not in the local 'sudoers' file tries to use sudo on a Linux host.

CCF: Privileged Account Escalation Inv

500.05, 500.06, 500.07, 500.09, 500.11, 500.14, 500.15, 500.16, 500.17

No

Security : Suspicious

Include All Log Sources

1330

CCF: Audit Log Cleared Alarm

This AIE Rule provides details on audit log clearing.

CCF: Audit Log Inv

500.05, 500.06, 500.07, 500.09, 500.11, 500.13, 500.14, 500.15, 500.16, 500.17

Yes

Audit : Access Success

Include All Log Sources

1331

CCF: Failed Audit Log Write Alarm

This AIE Rule provides details on audit log write failures.

CCF: Audit Log Inv

500.05, 500.06, 500.07, 500.09, 500.11, 500.13, 500.14, 500.15, 500.16, 500.17

Yes

Audit : Other Audit Failure

Include All Log Sources

1332

CCF: Password Modified by Another User

User changes the password of another account (not their own).

CCF: Password Modified Inv

500.05, 500.06, 500.07, 500.09, 500.11, 500.14, 500.15, 500.16, 500.17

No

Audit: Account Modified

Include All Log Sources

1333

CCF: Blacklisted Account Alarm

This AIE creates an alarm when a blacklisted account activity occurs within the environment.  This requires the CCF: User Blacklist to be populated and updated regularly.

N/A

500.05, 500.06, 500.07, 500.09, 500.11, 500.14, 500.15, 500.16, 500.17

Yes

Audit : Other Audit Success

Include All Log Sources

1334

CCF: Compromise Detected Alarm

This AIE rule creates an event and alerts on potential compromises across the environment.

CCF: Compromises Detected Inv

500.05, 500.06, 500.07, 500.09, 500.14, 500.16, 500.17

Yes

Security : Compromise

Include All Log Sources

1335

CCF: Account Deleted Rule

This rule provides details of accounts that have been deleted

CCF: Deleted Account Inv

500.05, 500.06, 500.07, 500.09, 500.11, 500.14, 500.15, 500.16, 500.17

No

Audit : Account Deleted

Include All Log Sources

1367

CCF: Account Enabled Rule

This AIE Rule alerts on the occurrence of any access granting to accounts.

CCF: Enabled Account Inv

500.05, 500.06, 500.07, 500.09, 500.11, 500.14, 500.15, 500.16, 500.17

Yes

Audit : Access Granted

Include All Log Sources

1368

CCF: Account Disabled Rule

This AIE Rule alerts on the occurrence of any access revoking to accounts.

CCF: Disabled Account Inv

500.05, 500.06, 500.07, 500.09, 500.11, 500.14, 500.15, 500.16, 500.17

No

Audit : Access Revoked

Include All Log Sources

1369

CCF: Account Modification

This AIE Rule creates a common event and provides detail around account modification activity.

CCF: Account Modification Inv

500.05, 500.06, 500.07, 500.09, 500.11, 500.14, 500.15, 500.16, 500.17

No

Audit : Account Modified

Include All Log Sources

1377

CCF: Excessive Authentication Failures Rule

This AIE Rule supports alerting on >10 authentication failures in 30 minutes (login failures). Match this threshold to your organization's specific authentication failure policies.

CCF: Excessive Authentication Failure Inv

500.05, 500.06, 500.07, 500.09, 500.11, 500.14, 500.15, 500.16, 500.17

Yes

Audit : Authentication Failure

Include All Log Sources

1370

CCF: Software Install Rule

This AIE rule creates an event and alerts on any software installation activity across the environment.

N/A

500.05, 500.06, 500.09, 500.14, 500.15, 500.16, 500.17

No

Audit : Configuration

Include All Log Sources

1371

CCF: Software Uninstall Rule

This AIE rule creates an event and alerts on any software uninstallation activity across the environment.

N/A

500.05, 500.06, 500.09, 500.14, 500.15, 500.16, 500.17

No

Audit : Configuration

Include All Log Sources

1372

CCF: Concurrent VPN from Same User

This AIE Rule alerts on the occurrence of concurrent VPN from the same user

N/A

500.05, 500.06, 500.07, 500.09, 500.11, 500.14, 500.15, 500.16, 500.17

No

Security : Compromise

Include All Log Sources

1373

CCF: Software Uninstall Failure Alarm

This alerts on failed or interrupted software uninstallations.

N/A

500.05, 500.06, 500.09, 500.14, 500.15, 500.16, 500.17

Yes

Audit : Configuration

Include All Log Sources

1374

CCF: Software Install Failure Alarm

This alerts on failed and incomplete updates attempts to update or install in the organization.

N/A

500.05, 500.06, 500.09, 500.14, 500.15, 500.16, 500.17

Yes

Audit : Configuration

Include All Log Sources

1375

CCF: Denial Of Service Alert

This AIE Rule alerts on the occurrence of any identified Denial of Service event.

CCF: Denial of Service Inv

500.05, 500.06, 500.07, 500.09, 500.14, 500.16, 500.17

Yes

Security : Denial Of Service

Include All Log Sources

1376