chore: 🧹 Remove redundant modified field
chore: 🧹 Use Mitre tags instead of url
chore: 🧹 Use permalink for github file reference
chore: 🧹 Order emerging-threats Exploits rules
fix: Creation of WerFault.exe/Wer.dll in Unusual Folder - Add filter for windows update/installation folder `C:\Windows\SoftwareDistribution\`
---------
Co-authored-by: nasbench <8741929+nasbench@users.noreply.github.com>
update: .RDP File Created by Outlook Process - Add new paths for Outlook apps in Windows 11
---------
Co-authored-by: nasbench <8741929+nasbench@users.noreply.github.com>
new: .RDP File Created by Outlook Process
update: .RDP File Created By Uncommon Application - Add `olk.exe` to cover the new version of outlook
---------
Co-authored-by: nasbench <8741929+nasbench@users.noreply.github.com>
update: LSASS Process Memory Dump Files - add new dump pattern for RustiveDump and NativeDump, and exchanged "startswith" with "contains" modifier for better coverage
---------
Co-authored-by: nasbench <8741929+nasbench@users.noreply.github.com>
chore: change tags, date, modified fields to comply with v2 of the Sigma spec.
chore: update the related type from `obsoletes` to `obsolete`.
chore: update local json schema to the latest version.
fix: Access To Potentially Sensitive Sysvol Files By Uncommon Applications - Fix error in filter modifier
new: Access To Chromium Browsers Sensitive Files By Uncommon Applications
new: Access To Crypto Currency Wallets By Uncommon Applications
update: Access To .Reg/.Hive Files By Uncommon Applications - Update filters and move to threat hunting folder
update: Access To Browser Credential Files By Uncommon Applications - Update filters and move to threat hunting folder
update: Access To Windows Credential History File By Uncommon Applications - Update filters
update: Access To Windows DPAPI Master Keys By Uncommon Applications - Update filters
update: Access To Windows Outlook Mail Files By Uncommon Applications - Update filters and move to threat hunting folder
update: Credential Manager Access By Uncommon Applications - Update filters
---------
Co-authored-by: nasbench <8741929+nasbench@users.noreply.github.com>
fix: Dllhost.EXE Initiated Network Connection To Non-Local IP Address - Filter out additional Microsoft IP block and moved to the threat hunting folder due to large amount of matches based on VT data
fix: Forest Blizzard APT - File Creation Activity - Fix typo in filename
fix: New RUN Key Pointing to Suspicious Folder - Enhance filter to fix new false positive found in testing
new: COM Object Hijacking Via Modification Of Default System CLSID Default Value
new: CVE-2023-1389 Potential Exploitation Attempt - Unauthenticated Command Injection In TP-Link Archer AX21
new: DPAPI Backup Keys And Certificate Export Activity IOC
new: DSInternals Suspicious PowerShell Cmdlets
new: DSInternals Suspicious PowerShell Cmdlets - ScriptBlock
new: HackTool - RemoteKrbRelay Execution
new: HackTool - RemoteKrbRelay SMB Relay Secrets Dump Module Indicators
new: HackTool - SharpDPAPI Execution
new: Hypervisor Enforced Paging Translation Disabled
new: PDF File Created By RegEdit.EXE
new: Periodic Backup For System Registry Hives Enabled
new: Renamed Microsoft Teams Execution
new: Windows LAPS Credential Dump From Entra ID
remove: Potential Persistence Via COM Hijacking From Suspicious Locations - Deprecated because of incorrect logic, replaced by "790317c0-0a36-4a6a-a105-6e576bf99a14"
update: DLL Call by Ordinal Via Rundll32.EXE - Reduced level to "medium" and moved to the threat hunting folder due to the fact that calling by ordinal can be seen by many legitimate utilities. An initial baseline needs to be set for the rule to be promoted.
update: Msiexec.EXE Initiated Network Connection Over HTTP - Reduced level to low and moved to the threat hunting folder due to large amount of matches based on VT data
update: MSSQL Add Account To Sysadmin Role - Update the "Provider_Name" to use a contains in order to account for other third party providers.
update: MSSQL Disable Audit Settings - Update the "Provider_Name" to use a contains in order to account for other third party providers.
update: MSSQL Server Failed Logon - Update the "Provider_Name" to use a contains in order to account for other third party providers.
update: MSSQL Server Failed Logon From External Network - Update the "Provider_Name" to use a contains in order to account for other third party providers.
update: MSSQL SPProcoption Set - Update the "Provider_Name" to use a contains in order to account for other third party providers.
update: MSSQL XPCmdshell Option Change - Update the "Provider_Name" to use a contains in order to account for other third party providers.
update: MSSQL XPCmdshell Suspicious Execution - Update the "Provider_Name" to use a contains in order to account for other third party providers.
update: Network Connection Initiated By AddinUtil.EXE - increase level to "high" and promote the status to "test" based on VT data
update: Network Connection Initiated To AzureWebsites.NET By Non-Browser Process - Reduced the level to "medium" and added filters for "null" and empty values based on VT data
update: Office Application Initiated Network Connection Over Uncommon Ports - Add port "143" based on Microsoft "Microsoft 365 URLs and IP address ranges" document
update: Office Application Initiated Network Connection To Non-Local IP - Add "outlook.exe" to the list of processes and filter multiple IP ranges based on Microsoft "Microsoft 365 URLs and IP address ranges" document
update: Password Protected Compressed File Extraction Via 7Zip - Reduced level to "low" and moved to the threat hunting folder due to large amount of matches based on VT data
update: Potential Dead Drop Resolvers - Add filters for "null" and empty values based on VT data
update: Potential Privilege Escalation via Local Kerberos Relay over LDAP - Update metadata information
update: Potential Shellcode Injection - Reduced level to "medium" and moved to the threat hunting folder due multiple FP with third party softwares
update: Potential Suspicious Execution From GUID Like Folder Names - Reduced level to "low" and moved to the threat hunting folder
update: Potentially Suspicious EventLog Recon Activity Using Log Query Utilities - Add additional EventLog and ETW providers to increase coverage
update: Potentially Suspicious Execution From Parent Process In Public Folder - Update logic to add Image names in addition to the previous CommandLines
update: Potentially Suspicious PowerShell Child Processes - Reduced level to "medium" and moved to the threat hunting folder due to large amount of matches based on VT data. As well as the logic doesn't look for anything suspicious but "child processes" that might be "uncommon".
update: Process Execution From A Potentially Suspicious Folder - Update metadata and remove "\Users\Public" to avoid false positives
update: Recon Command Output Piped To Findstr.EXE - Update the logic to user "wildcards" instead of spaces to cover different variants and increase the coverage.
update: Suspicious Electron Application Child Processes - Remove unnecessary filters
update: Suspicious Non-Browser Network Communication With Google API - Add filters for "null" and empty values based on VT data
update: System File Execution Location Anomaly - Enhance filters
update: Uncommon Child Process Of Setres.EXE - Update logic and metadata
update: Uncommon Link.EXE Parent Process - Enhance the filters and metadata
update: Windows Defender Threat Detection Service Disabled - Add french keyword for "stopped" to increase coverage for windows os that uses the french language
---------
Thanks: cY83rR0H1t
Thanks: CTI-Driven
Thanks: BIitzkrieg
Thanks: DFIR-jwedd
Thanks: Snp3r
chore: update Microsoft references link to use the "learn" subdomain instead of "docs".
---------
Co-authored-by: nasbench <8741929+nasbench@users.noreply.github.com>
Thanks: @ryanplasma
chore: delete "Pipfile" and "Pipfile.lock"
fix: Filter Driver Unloaded Via Fltmc.EXE - Add exclusion for ManageEngine
fix: Suspicious Child Process Of Wermgr.EXE - Exclude "WerConCpl.dll"
new: DNS Query To AzureWebsites.NET By Non-Browser Process
new: Files With System DLL Name In Unsuspected Locations
new: HackTool - Evil-WinRm Execution - PowerShell Module
new: HackTool - LaZagne Execution
new: Network Connection Initiated To AzureWebsites.NET By Non-Browser Process
update: Copying Sensitive Files with Credential Data - Use "windash" modifier
update: Explorer Process Tree Break - Use "windash" modifier
update: Files With System Process Name In Unsuspected Locations - Remove old filter
update: Lolbin Unregmp2.exe Use As Proxy - Use "windash" modifier
update: LSASS Process Reconnaissance Via Findstr.EXE - Use "windash" modifier
update: New Remote Desktop Connection Initiated Via Mstsc.EXE - Use "windash" modifier
update: Potential Proxy Execution Via Explorer.EXE From Shell Process - Update metadata and moved to Threat Hunting folder
update: Potential Windows Defender AV Bypass Via Dump64.EXE Rename - Enhance logic
update: Renamed ProcDump Execution - Add new flag option
update: Self Extracting Package Creation Via Iexpress.EXE From Potentially Suspicious Location - Use "windash" modifier
---------
Thanks: @qasimqlf
Thanks: @celalettin-turgut
Thanks: @cY83rR0H1t
new: Uncommon File Creation By Mysql Daemon Process
new: Potential Suspicious Browser Launch From Document Reader Process
---------
Co-authored-by: nasbench <8741929+nasbench@users.noreply.github.com>
fix: Windows Binaries Write Suspicious Extensions - Add new filter for when "bat" or "powershell" scripts are written via GPO to run at startup.
---------
Co-authored-by: nasbench <8741929+nasbench@users.noreply.github.com>
phantinuss