Rules by Product and UseCase
April 15, 2026 · View on GitHub
Vendor: Dropbox
Product: Dropbox
Use-Case: Compromised Credentials
| Rules | Models | MITRE ATT&CK® TTPs | Activity Types | Parsers |
|---|---|---|---|---|
| 109 | 51 | 11 | 8 | 13 |
| Event Type | Rules | Models |
|---|---|---|
| app-activity | T1078 - Valid Accounts ↳ APP-UApp-F: First login or activity within an application for user ↳ APP-UApp-A: Abnormal login or activity within an application for user ↳ APP-AppU-F: First login to an application for a user with no history ↳ APP-F-SA-NC: New service account access to application ↳ APP-AppG-F: First login to an application for group ↳ APP-GApp-A: Abnormal login to an application for group ↳ APP-UTi: Abnormal user activity time ↳ APP-UAg-F: First user agent string for user ↳ APP-UAg-2: Second new user agent string for user ↳ APP-UAg-3: More than two new user agents used by the user in the same session ↳ APP-UOs-F: First os/browser combination for user ↳ APP-UsH-F: First source asset for user in application ↳ APP-UsH-A: Abnormal source asset for user in application ↳ APP-UOb-F: First access to application object for user ↳ APP-UOb-A: Abnormal access to application object for user ↳ APP-UappA-F: First application activity for user ↳ APP-UappA-A: Abnormal application activity for user ↳ APP-GappA-F: First application activity for peer group ↳ APP-GappA-A: Abnormal application activity for peer group ↳ APP-AA-F: First application activity in the organization ↳ APP-AA-A: Abnormal activity in application for the organization ↳ APP-UId-F: First use of client Id for user ↳ APP-IdU-F: Reuse of client Id ↳ APP-UMime-F: First mime type for user ↳ APP-UMime-A: Abnormal mime type for user ↳ APP-GMime-F: First mime type for peer group ↳ APP-GMime-A: Abnormal mime type for peer group ↳ APP-OMime-F: First mime type for organization ↳ APP-OMime-A: Abnormal mime type for organization ↳ APP-AppSz-F: First application access from network zone ↳ APP-AT-PRIV: Non-privileged user performing privileged application activity ↳ APP-AppED-F: New Email-domain found in application ↳ UA-UI-F: First activity from ISP ↳ UA-UC-new: Abnormal country for user by new user ↳ UA-GC-new: Abnormal country for group by new user ↳ UA-OC-new: Abnormal country for organization by new user ↳ UA-UC-Suspicious: Activity from suspicious country ↳ UA-UC-Two: Activity from two different countries ↳ UA-UC-Three: Activity from 3 different countries T1133 - External Remote Services ↳ UA-UI-F: First activity from ISP ↳ UA-UC-new: Abnormal country for user by new user ↳ UA-GC-new: Abnormal country for group by new user ↳ UA-OC-new: Abnormal country for organization by new user ↳ UA-UC-Suspicious: Activity from suspicious country ↳ UA-UC-Two: Activity from two different countries ↳ UA-UC-Three: Activity from 3 different countries | • UA-OC: Countries for organization • UA-GC: Countries for peer groups • UA-UC: Countries for user activity • UA-UI-new: ISP of users during application activity • APP-AppED: Email-domains per application • APP-AT-PRIV: Privileged application activities • APP-AppSz: Source zones per application • APP-OMime: Mime types for organization • APP-GMime: Mime types per peer group • APP-UMime: Mime types per user • APP-IdU: User per Client Id • APP-UId: Client Id per User • APP-AA: Activity per application • APP-GappA: Application activity per peer group • APP-UappA: Application activity per user • APP-UOb: Application objects per user • APP-UsH: User's machines accessing applications • APP-UOs-New: OS and Browser from user agent • APP-UAg: User Agent Strings • APP-UTi: Application activity time for user • APP-GApp: Group Logons to Applications • APP-AppG: Groups per Application • APP-AppU: User Logons to Applications • APP-UApp: Applications per User |
| app-login | T1190 - Exploit Public Fasing Application ↳ APP-Log4j-String-2: There was an attempt via app activity to exploit the CVE-2021-44228 vulnerability using known keywords. ↳ A-APP-Log4j-String: There was an attempt via app activity to exploit the CVE-2021-44228 vulnerability on this asset. ↳ A-App-Log4j-String-2: There was an attempt via app activity to exploit the CVE-2021-44228 vulnerability using known keywords on the asset. T1078 - Valid Accounts ↳ APP-UApp-F: First login or activity within an application for user ↳ APP-UApp-A: Abnormal login or activity within an application for user ↳ APP-AppU-F: First login to an application for a user with no history ↳ APP-F-SA-NC: New service account access to application ↳ APP-AppG-F: First login to an application for group ↳ APP-GApp-A: Abnormal login to an application for group ↳ APP-UTi: Abnormal user activity time ↳ APP-UAg-F: First user agent string for user ↳ APP-UAg-2: Second new user agent string for user ↳ APP-UAg-3: More than two new user agents used by the user in the same session ↳ APP-UOs-F: First os/browser combination for user ↳ APP-UsH-F: First source asset for user in application ↳ APP-UsH-A: Abnormal source asset for user in application ↳ APP-UId-F: First use of client Id for user ↳ APP-IdU-F: Reuse of client Id ↳ APP-AppSz-F: First application access from network zone ↳ APP-AppED-F: New Email-domain found in application ↳ UA-UI-F: First activity from ISP ↳ UA-UC-new: Abnormal country for user by new user ↳ UA-GC-new: Abnormal country for group by new user ↳ UA-OC-new: Abnormal country for organization by new user ↳ UA-UC-Suspicious: Activity from suspicious country ↳ UA-UC-Two: Activity from two different countries ↳ UA-UC-Three: Activity from 3 different countries T1133 - External Remote Services ↳ UA-UI-F: First activity from ISP ↳ UA-UC-new: Abnormal country for user by new user ↳ UA-GC-new: Abnormal country for group by new user ↳ UA-OC-new: Abnormal country for organization by new user ↳ UA-UC-Suspicious: Activity from suspicious country ↳ UA-UC-Two: Activity from two different countries ↳ UA-UC-Three: Activity from 3 different countries | • UA-OC: Countries for organization • UA-GC: Countries for peer groups • UA-UC: Countries for user activity • UA-UI-new: ISP of users during application activity • APP-AppED: Email-domains per application • APP-AppSz: Source zones per application • APP-IdU: User per Client Id • APP-UId: Client Id per User • APP-UsH: User's machines accessing applications • APP-UOs-New: OS and Browser from user agent • APP-UAg: User Agent Strings • APP-UTi: Application activity time for user • APP-GApp: Group Logons to Applications • APP-AppG: Groups per Application • APP-AppU: User Logons to Applications • APP-UApp: Applications per User |
| file-delete | T1083 - File and Directory Discovery ↳ FA-UA-UI-F: First file activity from ISP ↳ FA-UA-UC-F: First file activity from country for user ↳ FA-UA-UC-A: Abnormal file activity from country for user ↳ FA-UA-GC-F: First file activity from country for group ↳ FA-UA-GC-A: Abnormal file activity from country for group ↳ FA-UA-OC-F: First file activity from country for organization ↳ FA-UA-OC-A: Abnormal file activity from country for organization ↳ FA-UTi: Abnormal user file activity time ↳ FA-UH-F: First file access from asset for user ↳ FA-UH-A: Abnormal file access from asset for user ↳ FA-OZ-F: First file access from network zone for organization ↳ FA-OZ-A: Abnormal file access from network zone for organization ↳ FA-UZ-F: First file access from network zone for user ↳ FA-UZ-A: Abnormal file access from network zone for user ↳ FA-UA-F: First file access activity for user ↳ FA-UA-A: Abnormal file access activity for user ↳ FA-OU-F: First access to source code files for user in the organization ↳ FA-OU-A: Abnormal access to source code files for user in the organization ↳ FA-OG-F: First access to source code files for user in the peer group ↳ FA-OG-A: Abnormal access to source code files for user in the peer group ↳ FA-UD-F: First file server access for user ↳ FA-UD-A: Abnormal file server access for user ↳ FA-GD-F: First file server access for group ↳ FA-GD-A: Abnormal file server access for group | • FA-GD: File server access per group • FA-UD: File server access per user • FA-OG: Users accessing source code files in the peer group • FA-OU: Users accessing source code files in the organization • FA-UA: File access activities for user • FA-UZ: File accesses from network zone for user • FA-OZ: File accesses from network zone for organization • FA-UH: User file access source host • FA-UTi: File activity time for user • FA-UA-OC: Countries for organization file activities • FA-UA-GC: Countries for peer groups file activities • FA-UA-UC: Countries for user file activity • FA-UA-UI-new: ISP of users during file activity |
| file-permission-change | T1083 - File and Directory Discovery ↳ FA-UA-UI-F: First file activity from ISP ↳ FA-UA-UC-F: First file activity from country for user ↳ FA-UA-UC-A: Abnormal file activity from country for user ↳ FA-UA-GC-F: First file activity from country for group ↳ FA-UA-GC-A: Abnormal file activity from country for group ↳ FA-UA-OC-F: First file activity from country for organization ↳ FA-UA-OC-A: Abnormal file activity from country for organization ↳ FA-UTi: Abnormal user file activity time ↳ FA-UH-F: First file access from asset for user ↳ FA-UH-A: Abnormal file access from asset for user ↳ FA-OZ-F: First file access from network zone for organization ↳ FA-OZ-A: Abnormal file access from network zone for organization ↳ FA-UZ-F: First file access from network zone for user ↳ FA-UZ-A: Abnormal file access from network zone for user ↳ FA-UA-F: First file access activity for user ↳ FA-UA-A: Abnormal file access activity for user ↳ FA-OU-F: First access to source code files for user in the organization ↳ FA-OU-A: Abnormal access to source code files for user in the organization ↳ FA-OG-F: First access to source code files for user in the peer group ↳ FA-OG-A: Abnormal access to source code files for user in the peer group ↳ FA-UD-F: First file server access for user ↳ FA-UD-A: Abnormal file server access for user ↳ FA-GD-F: First file server access for group ↳ FA-GD-A: Abnormal file server access for group | • FA-GD: File server access per group • FA-UD: File server access per user • FA-OG: Users accessing source code files in the peer group • FA-OU: Users accessing source code files in the organization • FA-UA: File access activities for user • FA-UZ: File accesses from network zone for user • FA-OZ: File accesses from network zone for organization • FA-UH: User file access source host • FA-UTi: File activity time for user • FA-UA-OC: Countries for organization file activities • FA-UA-GC: Countries for peer groups file activities • FA-UA-UC: Countries for user file activity • FA-UA-UI-new: ISP of users during file activity |
| file-read | T1003 - OS Credential Dumping ↳ A-FA-LSASS: Possible Mimikatz attack on this asset by a user process ↳ A-NTDS-Access-F: The NTDS database was accessed from a new location on this asset. ↳ A-NTDS-Access-A: The NTDS database was accessed from a non default location on this asset. ↳ A-NTDS-Access: The NTDS database was accessed from a non default location without 'ntds.dit' in the file path on this asset. T1003.003 - T1003.003 ↳ A-NTDS-Access-F: The NTDS database was accessed from a new location on this asset. ↳ A-NTDS-Access-A: The NTDS database was accessed from a non default location on this asset. ↳ A-NTDS-Access: The NTDS database was accessed from a non default location without 'ntds.dit' in the file path on this asset. T1003.001 - T1003.001 ↳ A-FA-LSASS: Possible Mimikatz attack on this asset by a user process T1083 - File and Directory Discovery ↳ FA-UA-UI-F: First file activity from ISP ↳ FA-UA-UC-F: First file activity from country for user ↳ FA-UA-UC-A: Abnormal file activity from country for user ↳ FA-UA-GC-F: First file activity from country for group ↳ FA-UA-GC-A: Abnormal file activity from country for group ↳ FA-UA-OC-F: First file activity from country for organization ↳ FA-UA-OC-A: Abnormal file activity from country for organization ↳ FA-UTi: Abnormal user file activity time ↳ FA-UH-F: First file access from asset for user ↳ FA-UH-A: Abnormal file access from asset for user ↳ FA-OZ-F: First file access from network zone for organization ↳ FA-OZ-A: Abnormal file access from network zone for organization ↳ FA-UZ-F: First file access from network zone for user ↳ FA-UZ-A: Abnormal file access from network zone for user ↳ FA-UA-F: First file access activity for user ↳ FA-UA-A: Abnormal file access activity for user ↳ FA-OU-F: First access to source code files for user in the organization ↳ FA-OU-A: Abnormal access to source code files for user in the organization ↳ FA-OG-F: First access to source code files for user in the peer group ↳ FA-OG-A: Abnormal access to source code files for user in the peer group ↳ FA-UD-F: First file server access for user ↳ FA-UD-A: Abnormal file server access for user ↳ FA-GD-F: First file server access for group ↳ FA-GD-A: Abnormal file server access for group | • A-NTDS-Access: Models the amount of accesses to paths that are related to NTDS • FA-GD: File server access per group • FA-UD: File server access per user • FA-OG: Users accessing source code files in the peer group • FA-OU: Users accessing source code files in the organization • FA-UA: File access activities for user • FA-UZ: File accesses from network zone for user • FA-OZ: File accesses from network zone for organization • FA-UH: User file access source host • FA-UTi: File activity time for user • FA-UA-OC: Countries for organization file activities • FA-UA-GC: Countries for peer groups file activities • FA-UA-UC: Countries for user file activity • FA-UA-UI-new: ISP of users during file activity |
| file-write | T1003 - OS Credential Dumping ↳ A-ATP-Tool-FGDump: Malicious exe/dll. ↳ A-ATP-Tool-PSTGDump: Malicious pstgdump.exe was run from a temp folder on this asset. ↳ A-NTDS-Access-F: The NTDS database was accessed from a new location on this asset. ↳ A-NTDS-Access-A: The NTDS database was accessed from a non default location on this asset. ↳ A-NTDS-Access: The NTDS database was accessed from a non default location without 'ntds.dit' in the file path on this asset. ↳ A-NTDS-Shadow-Copy1: The NTDS database changed location to a shadowcopy using 'ntds.dit' and 'harddiskvolumeshadowcopy' in the file path on this asset. ↳ A-NTDS-Shadow-Copy2: The NTDS database changed location to a shadowcopy using 'harddiskvolumeshadowcopy' in the file path on this asset. T1003.003 - T1003.003 ↳ A-NTDS-Access-F: The NTDS database was accessed from a new location on this asset. ↳ A-NTDS-Access-A: The NTDS database was accessed from a non default location on this asset. ↳ A-NTDS-Access: The NTDS database was accessed from a non default location without 'ntds.dit' in the file path on this asset. ↳ A-NTDS-Shadow-Copy1: The NTDS database changed location to a shadowcopy using 'ntds.dit' and 'harddiskvolumeshadowcopy' in the file path on this asset. ↳ A-NTDS-Shadow-Copy2: The NTDS database changed location to a shadowcopy using 'harddiskvolumeshadowcopy' in the file path on this asset. T1003.002 - T1003.002 ↳ A-ATP-Tool-FGDump: Malicious exe/dll. ↳ A-ATP-Tool-PSTGDump: Malicious pstgdump.exe was run from a temp folder on this asset. T1083 - File and Directory Discovery ↳ FA-UA-UI-F: First file activity from ISP ↳ FA-UA-UC-F: First file activity from country for user ↳ FA-UA-UC-A: Abnormal file activity from country for user ↳ FA-UA-GC-F: First file activity from country for group ↳ FA-UA-GC-A: Abnormal file activity from country for group ↳ FA-UA-OC-F: First file activity from country for organization ↳ FA-UA-OC-A: Abnormal file activity from country for organization ↳ FA-UTi: Abnormal user file activity time ↳ FA-UH-F: First file access from asset for user ↳ FA-UH-A: Abnormal file access from asset for user ↳ FA-OZ-F: First file access from network zone for organization ↳ FA-OZ-A: Abnormal file access from network zone for organization ↳ FA-UZ-F: First file access from network zone for user ↳ FA-UZ-A: Abnormal file access from network zone for user ↳ FA-UA-F: First file access activity for user ↳ FA-UA-A: Abnormal file access activity for user ↳ FA-OU-F: First access to source code files for user in the organization ↳ FA-OU-A: Abnormal access to source code files for user in the organization ↳ FA-OG-F: First access to source code files for user in the peer group ↳ FA-OG-A: Abnormal access to source code files for user in the peer group ↳ FA-UD-F: First file server access for user ↳ FA-UD-A: Abnormal file server access for user ↳ FA-GD-F: First file server access for group ↳ FA-GD-A: Abnormal file server access for group | • A-NTDS-Access: Models the amount of accesses to paths that are related to NTDS • FA-GD: File server access per group • FA-UD: File server access per user • FA-OG: Users accessing source code files in the peer group • FA-OU: Users accessing source code files in the organization • FA-UA: File access activities for user • FA-UZ: File accesses from network zone for user • FA-OZ: File accesses from network zone for organization • FA-UH: User file access source host • FA-UTi: File activity time for user • FA-UA-OC: Countries for organization file activities • FA-UA-GC: Countries for peer groups file activities • FA-UA-UC: Countries for user file activity • FA-UA-UI-new: ISP of users during file activity |
| security-alert | T1027 - Obfuscated Files or Information ↳ A-ALERT-Critical: Security Alert on a critical asset ↳ A-ALERT-Log4j: Alert associated with an exploitation or post exploitation as seen with Log4j Vulnerability was detected. T1027.005 - Obfuscated Files or Information: Indicator Removal from Tools ↳ A-ALERT-Critical: Security Alert on a critical asset ↳ A-ALERT-Log4j: Alert associated with an exploitation or post exploitation as seen with Log4j Vulnerability was detected. T1190 - Exploit Public Fasing Application ↳ A-Log4j-Vul-Alert: Alert for the CVE-2021-44228 vulnerability on the asset. T1078 - Valid Accounts ↳ SA-OU-ALERT-F: First security alert triggered for this user in the organization ↳ SA-OU-ALERT-A: Abnormal user triggering security alert in the organization ↳ SA-OG-ALERT-F: First security alert triggered for peer group in the organization ↳ SA-OG-ALERT-A: Abnormal peer group triggering security alert in the organization ↳ SA-UA-F: First security alert name for user ↳ SA-UA-A: Abnormal security alert name for user ↳ SA-GA-F: First security alert name in the peer group ↳ SA-GA-A: Abnormal security alert name in the peer group ↳ SA-OA-F: First security alert name in the organization ↳ A-SA-AN-ALERT-F: First security alert name on the asset ↳ A-SA-AN-ALERT-A: Abnormal security alert name on the asset ↳ A-SA-ON-ALERT-F: First security alert (by name) in the organization ↳ A-SA-ON-ALERT-A: Abnormal security alert (by name) in the organization ↳ A-SA-ZN-ALERT-F: First security alert (by name) in the zone ↳ A-SA-ZN-ALERT-A: Abnormal security alert (by name) in the zone ↳ A-SA-HN-ALERT-F: First security alert (by name) in the asset ↳ A-SA-HN-ALERT-A: Abnormal security alert (by name) in the asset ↳ A-SA-OA-ALERT-F: First security alert for this asset for organization ↳ A-SA-OA-ALERT-A: Abnormal asset triggering security alert for organization T1133 - External Remote Services ↳ ALERT-VPN: Security Alert on asset accessed by this user during VPN session | • A-SA-OA-ALERT: Assets triggering security alerts in the organization • A-SA-HN-ALERT: Security alert names triggered by the asset • A-SA-ZN-ALERT: Security alert names triggered in the zone • A-SA-ON-ALERT: Security alert names triggered in the organization • A-SA-AN-ALERT: Security alert names on asset • SA-GA: Security alert names in the peer group • SA-UA: Security alert names for user • SA-OG-ALERT: Peer groups triggering security alerts in the organization • SA-OU-ALERT: Users triggering security alerts in the organization |
| vpn-logout | T1078 - Valid Accounts ↳ APP-UAgC-F: First activity from country and first os/browser/user agent for user in same session ↳ AL-UHcount-S: Abnormal number of logon assets (S) ↳ AL-UHcount-M: Abnormal number of assets logged on within a session (M) ↳ AL-UHcount-L: Abnormal number of assets logged on within a session (L) ↳ AL-OHcount: Abnormal number of assets logged on within a session compared to the organization ↳ AL-GHcount: Abnormal number of logged on assets compared to group ↳ VPN-End-DUR: Abnormal VPN session duration ↳ DC08d-new: Abnormal number of assets compared to group for a new user ↳ DC14g-new: Abnormal number of accessed assets for group of new user ↳ DC17j-new: Abnormal number of accessed zones for group of a new user T1133 - External Remote Services ↳ VPN-BSum: Abnormal amount of data uploaded during VPN Session ↳ VPN-End-DUR: Abnormal VPN session duration T1110 - Brute Force ↳ APP-UFL-COUNT: Abnormal number of failed application logins for user | • VPN-End-DUR: VPN session duration • VPN-BSum: Sum of bytes uploaded during VPN • AL-OHcount: Count of assets logon per user in the organization • APP-UFL-COUNT: Count of failed application logins in a session |