SigmaHQ Detections
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6,797 detections
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This rule detects the creation of new Microsoft Office macro-enabled files. These file types (.docm, .dotm, .xlsm, .xltm, .potm, .pptm) can contain embedded macros, which are often used by adversaries for initial access, persistence, or execution of malicious code. Monitoring their creation can help identify suspicious activity related to macro-enabled document attacks.
Detects the creation of a file named "wpbbin.exe" in the "C:\Windows\System32\" directory. This activity can be indicative of a UEFI-based persistence method used by adversaries to maintain access to a system, often by injecting executable files into the boot process, potentially bypassing security measures like BitLocker.
Detects outbound network connections to known cryptocurrency mining pool domains. This activity is often indicative of resource hijacking (cryptojacking) where an attacker uses a compromised system's resources to mine cryptocurrency without the owner's consent. The rule specifically targets a comprehensive list of domains associated with various mining pools, primarily for Monero (XMR) and other cryptocurrencies.
This rule detects the execution of specific PowerShell cmdlets related to Hyper-V virtual machine management. Adversaries may use these cmdlets to create, configure, or start virtual machines to evade detection by isolating malicious activities within a virtualized environment. The rule specifically looks for 'New-VM', 'Set-VMFirmware', and 'Start-VM' within PowerShell script block text.
Detects a typical pattern of a Cobalt Strike Beacon Object File (BOF) attempting to inject into other processes. This rule specifically looks for process access events where the call trace indicates a sequence from ntdll.dll to KERNELBASE.dll, followed by an unknown module, combined with specific granted access rights (0x1028 or 0x1fffff). This pattern is indicative of certain process injection techniques used by Cobalt Strike BOFs.
This rule detects remote access to the Local Security Authority Subsystem Service (LSASS) process via Windows Remote Management (WinRM). This activity is highly indicative of credential dumping attempts, often performed by tools like Mimikatz, to extract sensitive authentication material from memory. The rule specifically looks for process access events where the target process is 'lsass.exe' and the source process initiating the access is 'wsmprovhost.exe', which is associated with WinRM. It also filters out common benign access patterns (0x80000000 GrantedAccess) to reduce false positives.
Detects the execution of 'curl.exe' with the '-c' flag or '--cookie-jar' option to save cookie data. This activity can be indicative of an attacker attempting to hijack sessions by extracting authentication cookies.
Detects the execution of 'find.exe' or 'findstr.exe' where the command line arguments include a '.lnk' file. This behavior has been observed in attacks, such as the HHS redirect attack, where adversaries use these legitimate Windows utilities to indirectly execute malicious shortcut files.
This rule detects the execution of Mimikatz by identifying specific command-line arguments and keywords commonly associated with its various modules and functions. It looks for terms like 'DumpCreds', 'mimikatz', and module-specific keywords such as '::aadcookie', '::detours', 'sekurlsa::', 'kerberos::', and 'lsadump::'. The rule aims to identify attempts to dump credentials or perform other malicious actions using the Mimikatz tool.
Detects the Internet Information Services (IIS) command-line tool, AppCmd, being used to list passwords or configuration details that may contain sensitive information. This activity indicates an attempt to dump credentials from IIS.
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