Sigma Rules
557 rules found for "Red Canary"
Renamed Mavinject.EXE Execution
Detects the execution of a renamed version of the "Mavinject" process. Which can be abused to perform process injection using the "/INJECTRUNNING" flag
Renamed MegaSync Execution
Detects the execution of a renamed MegaSync.exe as seen used by ransomware families like Nefilim, Sodinokibi, Pysa, and Conti.
Renamed NetSupport RAT Execution
Detects the execution of a renamed "client32.exe" (NetSupport RAT) via Imphash, Product and OriginalFileName strings
Renamed Remote Utilities RAT (RURAT) Execution
Detects execution of renamed Remote Utilities (RURAT) via Product PE header field
Renamed Sysinternals Sdelete Execution
Detects the use of a renamed SysInternals Sdelete, which is something an administrator shouldn't do (the renaming)
Rundll32 InstallScreenSaver Execution
An attacker may execute an application as a SCR File using rundll32.exe desk.cpl,InstallScreenSaver
Rundll32 Spawned Via Explorer.EXE
Detects execution of "rundll32.exe" with a parent process of Explorer.exe. This has been observed by variants of Raspberry Robin, as first reported by Red Canary.
Rundll32 Registered COM Objects
load malicious registered COM objects
RunDLL32 Spawning Explorer
Detects RunDLL32.exe spawning explorer.exe as child, which is very uncommon, often observes Gamarue spawning the explorer.exe process in an unusual way
Suspicious Usage Of ShellExec_RunDLL
Detects suspicious usage of the ShellExec_RunDLL function to launch other commands as seen in the the raspberry-robin attack
Suspicious ShellExec_RunDLL Call Via Ordinal
Detects suspicious call to the "ShellExec_RunDLL" exported function of SHELL32.DLL through the ordinal number to launch other commands. Adversary might only use the ordinal number in order to bypass existing detection that alert on usage of ShellExec_RunDLL on CommandLine.
New Service Creation Using Sc.EXE
Detects the creation of a new service using the "sc.exe" utility.
Suspicious Service Path Modification
Detects service path modification via the "sc" binary to a suspicious command or path
Disable Important Scheduled Task
Detects when adversaries stop services or processes by disabling their respective scheduled tasks in order to conduct data destructive activities
Script Event Consumer Spawning Process
Detects a suspicious child process of Script Event Consumer (scrcons.exe).
Suspicious Execution of Shutdown
Use of the commandline to shutdown or reboot windows
Suspicious Execution of Shutdown to Log Out
Detects the rare use of the command line tool shutdown to logoff a user
Audio Capture via SoundRecorder
Detect attacker collecting audio via SoundRecorder application.
SQLite Chromium Profile Data DB Access
Detect usage of the "sqlite" binary to query databases in Chromium-based browsers for potential data stealing.
SQLite Firefox Profile Data DB Access
Detect usage of the "sqlite" binary to query databases in Firefox and other Gecko-based browsers for potential data stealing.
Execute From Alternate Data Streams
Detects execution from an Alternate Data Stream (ADS). Adversaries may use NTFS file attributes to hide their malicious data in order to evade detection
Automated Collection Command Prompt
Once established within a system or network, an adversary may use automated techniques for collecting internal data.
Potential CommandLine Obfuscation Using Unicode Characters From Suspicious Image
Detects potential commandline obfuscation using unicode characters. Adversaries may attempt to make an executable or file difficult to discover or analyze by encrypting, encoding, or otherwise obfuscating its contents on the system or in transit.
Potential Browser Data Stealing
Adversaries may acquire credentials from web browsers by reading files specific to the target browser. Web browsers commonly save credentials such as website usernames and passwords so that they do not need to be entered manually in the future. Web browsers typically store the credentials in an encrypted format within a credential store.
Suspicious Eventlog Clearing or Configuration Change Activity
Detects the clearing or configuration tampering of EventLog using utilities such as "wevtutil", "powershell" and "wmic". This technique were seen used by threat actors and ransomware strains in order to evade defenses.
Potentially Suspicious Execution From Parent Process In Public Folder
Detects a potentially suspicious execution of a parent process located in the "\Users\Public" folder executing a child process containing references to shell or scripting binaries and commandlines.
Potential Hidden Directory Creation Via NTFS INDEX_ALLOCATION Stream - CLI
Detects command line containing reference to the "::$index_allocation" stream, which can be used as a technique to prevent access to folders or files from tooling such as "explorer.exe" or "powershell.exe"
Potential Homoglyph Attack Using Lookalike Characters
Detects the presence of unicode characters which are homoglyphs, or identical in appearance, to ASCII letter characters. This is used as an obfuscation and masquerading techniques. Only "perfect" homoglyphs are included; these are characters that are indistinguishable from ASCII characters and thus may make excellent candidates for homoglyph attack characters.
Local Accounts Discovery
Local accounts, System Owner/User discovery using operating systems utilities
Suspicious Network Command
Adversaries may look for details about the network configuration and settings of systems they access or through information discovery of remote systems
Suspicious Scan Loop Network
Adversaries may attempt to get a listing of other systems by IP address, hostname, or other logical identifier on a network that may be used for Lateral Movement from the current system
Potential Network Sniffing Activity Using Network Tools
Detects potential network sniffing via use of network tools such as "tshark", "windump". Network sniffing refers to using the network interface on a system to monitor or capture information sent over a wired or wireless connection. An adversary may place a network interface into promiscuous mode to passively access data in transit over the network, or use span ports to capture a larger amount of data.
Private Keys Reconnaissance Via CommandLine Tools
Adversaries may search for private key certificate files on compromised systems for insecurely stored credential
Suspicious Program Names
Detects suspicious patterns in program names or folders that are often found in malicious samples or hacktools
Recon Information for Export with Command Prompt
Once established within a system or network, an adversary may use automated techniques for collecting internal data.
Potential Defense Evasion Via Right-to-Left Override
Detects the presence of the "u202+E" character, which causes a terminal, browser, or operating system to render text in a right-to-left sequence. This character is used as an obfuscation and masquerading techniques by adversaries to trick users into opening malicious files.
Suspicious New Service Creation
Detects creation of a new service via "sc" command or the powershell "new-service" cmdlet with suspicious binary paths
Suspicious Windows Service Tampering
Detects the usage of binaries such as 'net', 'sc' or 'powershell' in order to stop, pause, disable or delete critical or important Windows services such as AV, Backup, etc. As seen being used in some ransomware scripts
Shadow Copies Deletion Using Operating Systems Utilities
Shadow Copies deletion using operating systems utilities
Suspicious Process Masquerading As SvcHost.EXE
Detects a suspicious process that is masquerading as the legitimate "svchost.exe" by naming its binary "svchost.exe" and executing from an uncommon location. Adversaries often disguise their malicious binaries by naming them after legitimate system processes like "svchost.exe" to evade detection.
Potential File Overwrite Via Sysinternals SDelete
Detects the use of SDelete to erase a file not the free space
Uninstall Sysinternals Sysmon
Detects the removal of Sysmon, which could be a potential attempt at defense evasion
Suspicious Execution of Systeminfo
Detects usage of the "systeminfo" command to retrieve information
Suspicious Recursive Takeown
Adversaries can interact with the DACLs using built-in Windows commands takeown which can grant adversaries higher permissions on specific files and folders
Bypass UAC via CMSTP
Detect commandline usage of Microsoft Connection Manager Profile Installer (cmstp.exe) to install specially formatted local .INF files
Bypass UAC via Fodhelper.exe
Identifies use of Fodhelper.exe to bypass User Account Control. Adversaries use this technique to execute privileged processes.
Use of UltraVNC Remote Access Software
An adversary may use legitimate desktop support and remote access software,to establish an interactive command and control channel to target systems within networks
Uninstall Crowdstrike Falcon Sensor
Adversaries may disable security tools to avoid possible detection of their tools and activities by uninstalling Crowdstrike Falcon