SigmaHQ Detections
@sigmaHQ12 followers122,429 downloads2,499 copies16 likes159,644 views
6,797 detections
Filters
Last updated
All Time
Detection languages
6,797
Categories
2,695
910
506
407
372
Platforms
5,313
505
263
203
164
Products / Services
2,050
1,570
475
423
316
MITRE Techniques
2,652
1,738
1,655
1,502
764
CVEs
19
19
19
16
10
Detects the deletion of the "Zone.Identifier" Alternate Data Stream (ADS). Attackers can leverage this to bypass security restrictions that make use of the ADS, such as those in Microsoft Office applications. By removing this identifier, a file downloaded from the internet might be treated as a local file, potentially allowing macros or other active content to run without security warnings.
Detects the creation of a scheduled task by monitoring file creation events in the standard Windows scheduled task directories. This rule specifically looks for new files being written to ':\Windows\System32\Tasks\', ':\Windows\SysWOW64\Tasks\', and ':\Windows\Tasks\', which are common locations for scheduled task definitions.
Detects a network connection initiated by the "hh.exe" process to HTTP destination ports (80 or 443). This activity could indicate the execution or download of remotely hosted Compiled HTML (.chm) files, which can be abused by adversaries to conceal and execute malicious code. This technique is often used for defense evasion and can bypass application controls.
This rule detects the use of PowerShell's `Remove-Item` cmdlet or its aliases (`del`, `erase`, `rd`, `ri`, `rm`, `rmdir`) with the `-Path` parameter within a PowerShell script block. This activity is indicative of file or folder deletion, which can be used by adversaries for defense evasion or to remove traces of their activity.
Detects the execution of 'curl.exe' on Windows systems. This activity can indicate an attempt to download files from a remote location, make web requests to external servers, or potentially be used for command and control communication. Adversaries often use tools like curl for ingress tool transfer or to retrieve additional malicious payloads.
Detects the execution of 'curl.exe' when a custom User-Agent string is specified using either the '-A' or '--user-agent' command-line options. This behavior can be indicative of an adversary attempting to mimic legitimate web traffic while using a non-standard User-Agent to evade detection or to identify themselves to a C2 server.
Detects any child process spawning from "Diskshadow.exe". This could be due to executing Diskshadow in interpreter mode or script mode and using the "exec" flag to launch other applications. Adversaries may use Diskshadow.exe to proxy execution of other commands or to inhibit system recovery by deleting shadow copies.
This rule detects the execution of rundll32.exe when it attempts to call a DLL export by its ordinal number. This technique is often used by malware for defense evasion, as it can bypass security tools that might not monitor rundll32.exe or its specific command-line arguments. The rule specifically looks for command-line patterns like ',#' or '.dll #' which indicate an ordinal call. It includes filters to reduce false positives from legitimate Windows components like EDGEHTML.dll or Visual Studio build processes.
Detects the execution of 'sc.exe' with the 'query' command-line argument to gather information about registered services on a Windows system. This activity can be indicative of discovery efforts by an attacker.
Detects a program executing from common web server root folders such as 'wwwroot', 'wmpub', or 'htdocs'. This rule is designed to identify potential webshells, backdoors, or other malicious executables placed within web server directories for persistence or remote access. It filters out common legitimate executables found in 'bin', 'Tools', or 'SMSComponent' subdirectories, and processes spawned by 'services.exe' to reduce false positives.
Page 501 of 680