Sigma Rules
558 rules found for "Red Canary"
Windows Credential Manager Access via VaultCmd
List credentials currently stored in Windows Credential Manager via the native Windows utility vaultcmd.exe
Use of W32tm as Timer
When configured with suitable command line arguments, w32tm can act as a delay mechanism
All Backups Deleted Via Wbadmin.EXE
Detects the deletion of all backups or system state backups via "wbadmin.exe". This technique is used by numerous ransomware families and actors. This may only be successful on server platforms that have Windows Backup enabled.
Windows Backup Deleted Via Wbadmin.EXE
Detects the deletion of backups or system state backups via "wbadmin.exe". This technique is used by numerous ransomware families and actors. This may only be successful on server platforms that have Windows Backup enabled.
Suspicious Where Execution
Adversaries may enumerate browser bookmarks to learn more about compromised hosts. Browser bookmarks may reveal personal information about users (ex: banking sites, interests, social media, etc.) as well as details about internal network resources such as servers, tools/dashboards, or other related infrastructure.
Remote Code Execute via Winrm.vbs
Detects an attempt to execute code or create service on remote host via winrm.vbs.
Compress Data and Lock With Password for Exfiltration With WINZIP
An adversary may compress or encrypt data that is collected prior to exfiltration using 3rd party utilities
Potential Windows Defender Tampering Via Wmic.EXE
Detects potential tampering with Windows Defender settings such as adding exclusion using wmic
New Process Created Via Wmic.EXE
Detects new process creation using WMIC via the "process call create" flag
Local Groups Reconnaissance Via Wmic.EXE
Detects the execution of "wmic" with the "group" flag. Adversaries may attempt to find local system groups and permission settings. The knowledge of local system permission groups can help adversaries determine which groups exist and which users belong to a particular group. Adversaries may use this information to determine which users have elevated permissions, such as the users found within the local administrators group.
Process Reconnaissance Via Wmic.EXE
Detects the execution of "wmic" with the "process" flag, which adversary might use to list processes running on the compromised host or list installed software hotfixes and patches.
Service Reconnaissance Via Wmic.EXE
An adversary might use WMI to check if a certain remote service is running on a remote device. When the test completes, a service information will be displayed on the screen if it exists. A common feedback message is that "No instance(s) Available" if the service queried is not running. A common error message is "Node - (provided IP or default) ERROR Description =The RPC server is unavailable" if the provided remote host is unreachable
Uncommon System Information Discovery Via Wmic.EXE
Detects the use of the WMI command-line (WMIC) utility to identify and display various system information, including OS, CPU, GPU, and disk drive names; memory capacity; display resolution; and baseboard, BIOS, and GPU driver products/versions. Some of these commands were used by Aurora Stealer in late 2022/early 2023.
Application Removed Via Wmic.EXE
Detects the removal or uninstallation of an application via "Wmic.EXE".
XSL Script Execution Via WMIC.EXE
Detects the execution of WMIC with the "format" flag to potentially load local XSL files. Adversaries abuse this functionality to execute arbitrary files while potentially bypassing application whitelisting defenses. Extensible Stylesheet Language (XSL) files are commonly used to describe the processing and rendering of data within XML files.
Potential Dropper Script Execution Via WScript/CScript/MSHTA
Detects wscript/cscript/mshta executions of scripts located in user directories
Suspicious Windows Update Agent Empty Cmdline
Detects suspicious Windows Update Agent activity in which a wuauclt.exe process command line doesn't contain any command line flags
Removal Of AMSI Provider Registry Keys
Detects the deletion of AMSI provider registry key entries in HKLM\Software\Microsoft\AMSI. This technique could be used by an attacker in order to disable AMSI inspection.
Esentutl Volume Shadow Copy Service Keys
Detects the volume shadow copy service initialization and processing via esentutl. Registry keys such as HKLM\\System\\CurrentControlSet\\Services\\VSS\\Diag\\VolSnap\\Volume are captured.
Path To Screensaver Binary Modified
Detects value modification of registry key containing path to binary used as screensaver.
Registry Persistence via Service in Safe Mode
Detects the modification of the registry to allow a driver or service to persist in Safe Mode.
Add Port Monitor Persistence in Registry
Adversaries may use port monitors to run an attacker supplied DLL during system boot for persistence or privilege escalation. A port monitor can be set through the AddMonitor API call to set a DLL to be loaded at startup.
Allow RDP Remote Assistance Feature
Detect enable rdp feature to allow specific user to rdp connect on the targeted machine
Classes Autorun Keys Modification
Detects modification of Windows Registry Classes keys used for persistence. Adversaries modify these autostart extensibility points (ASEP) to execute malicious code when file types are opened or actions are performed. Various legitimate software also uses these keys. Currently, this rule only filters out known legitimate software paths, thus it is recommended to review and tune filters for your environment to reduce false positives before deploying to production.
Common Autorun Keys Modification
Detects modification of autostart extensibility point (ASEP) in registry.
CurrentControlSet Autorun Keys Modification
Detects modification of autostart extensibility point (ASEP) in registry.
CurrentVersion Autorun Keys Modification
Detects modification of autostart extensibility point (ASEP) in registry.
CurrentVersion NT Autorun Keys Modification
Detects modification of autostart extensibility point (ASEP) in registry.
Internet Explorer Autorun Keys Modification
Detects modification of autostart extensibility point (ASEP) in registry.
Office Autorun Keys Modification
Detects modification of autostart extensibility point (ASEP) in registry. Adversaries may modify these keys to execute malicious code when Office files are opened. There are various legitimate add-ins that also use these keys and this filter list might not be exhaustive. Thus, it is recommended to review and tune filters for your environment to reduce false positives before deploying to production.
Session Manager Autorun Keys Modification
Detects modification of autostart extensibility point (ASEP) in registry.
System Scripts Autorun Keys Modification
Detects modification of autostart extensibility point (ASEP) in registry.
WinSock2 Autorun Keys Modification
Detects modification of autostart extensibility point (ASEP) in registry.
Wow6432Node CurrentVersion Autorun Keys Modification
Detects modification of autostart extensibility point (ASEP) in registry.
Wow6432Node Classes Autorun Keys Modification
Detects modification of autostart extensibility point (ASEP) in registry.
Wow6432Node Windows NT CurrentVersion Autorun Keys Modification
Detects modification of autostart extensibility point (ASEP) in registry.
Bypass UAC Using DelegateExecute
Bypasses User Account Control using a fileless method
Bypass UAC Using Event Viewer
Bypasses User Account Control using Event Viewer and a relevant Windows Registry modification
Bypass UAC Using SilentCleanup Task
Detects the setting of the environement variable "windir" to a non default value. Attackers often abuse this variable in order to trigger a UAC bypass via the "SilentCleanup" task. The SilentCleanup task located in %windir%\system32\cleanmgr.exe is an auto-elevated task that can be abused to elevate any file with administrator privileges without prompting UAC.
Default RDP Port Changed to Non Standard Port
Detects changes to the default RDP port. Remote desktop is a common feature in operating systems. It allows a user to log into a remote system using an interactive session with a graphical user interface. Microsoft refers to its implementation of the Remote Desktop Protocol (RDP) as Remote Desktop Services (RDS).
IE Change Domain Zone
Hides the file extension through modification of the registry
Running Chrome VPN Extensions via the Registry 2 VPN Extension
Running Chrome VPN Extensions via the Registry install 2 vpn extension
Service Binary in Suspicious Folder
Detect the creation of a service with a service binary located in a suspicious directory
Windows Hypervisor Enforced Code Integrity Disabled
Detects changes to the HypervisorEnforcedCodeIntegrity registry key and the "Enabled" value being set to 0 in order to disable the Hypervisor Enforced Code Integrity feature. This allows an attacker to load unsigned and untrusted code to be run in the kernel
Disable Administrative Share Creation at Startup
Administrative shares are hidden network shares created by Microsoft Windows NT operating systems that grant system administrators remote access to every disk volume on a network-connected system
Disable Microsoft Defender Firewall via Registry
Adversaries may disable or modify system firewalls in order to bypass controls limiting network usage
Disable Internal Tools or Feature in Registry
Detects registry modifications that change features of internal Windows tools (malware like Agent Tesla uses this technique)
Disable Privacy Settings Experience in Registry
Detects registry modifications that disable Privacy Settings Experience