Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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This rule detects the wmRAT backdoor by identifying specific byte patterns associated with its core functionalities. These functionalities include connecting to a command and control (C2) server, finding and exfiltrating files, receiving data and writing it to files, and gathering system information. The rule looks for a combination of these distinct byte patterns to minimize false positives.
Detects suspicious file creations within the Palo Alto Networks PAN-OS' parent telemetry folder, specifically looking for filenames containing patterns indicative of OS command injection attempts related to CVE-2024-3400. These files are processed by the 'dt_curl' script, which can lead to arbitrary command execution if device telemetry is enabled and filenames are crafted to bypass shell-subprocess restrictions.
Detects the creation of Python path configuration files (.pth) within Python library folders on Windows systems. These files can be maliciously used for code execution and persistence, as modules referenced by them are executed at every Python startup (v3.5+), regardless of whether they are imported by the calling script. The rule specifically targets files ending with '.pth' in paths matching '\(venv|python(.+)?)\lib\site-packages\', while filtering out known legitimate .pth files like 'pywin32.pth' and 'distutils-precedence.pth'.
Detects the creation of Python path configuration files (.pth) within Python library folders on macOS. These files can be maliciously used for code execution and persistence, as modules referenced by them are executed at every Python startup (v3.5+), regardless of whether they are explicitly imported by a script. The rule specifically looks for files ending with '.pth' in the '/lib/python3.([5-9]|[0-9]{2})/site-packages/' directory structure.
Detects the creation of Python path configuration files (.pth) within Python library folders on Linux systems. These files can be maliciously used for code execution and persistence, as modules referenced by them are executed at every Python startup (v3.5+), regardless of whether they are imported by the calling script. The rule specifically looks for files ending with '.pth' in typical Python site-packages directories.
Detects the creation of JavaScript files within the Windows DriverStore directory. This activity has been observed in attacks by the Forest Blizzard APT (also known as Star Blizzard) to exploit CVE-2022-38028 in the Windows Print Spooler service. The adversary modified a JavaScript constraints file and executed it with SYSTEM-level permissions to achieve privilege escalation and credential access.
Detects the creation of new files with the ".evtx" extension in non-common or non-standard locations. This could indicate tampering with default EVTX locations to evade security controls or exfiltration of event logs to search for sensitive information. Note that backup software and legitimate administrators might perform similar actions during troubleshooting.
This rule identifies when a single user copies a large number of files from Google Drive within a one-hour period. This behavior can be indicative of data exfiltration attempts, where an attacker or malicious insider is trying to move sensitive data out of the organization's control. The rule specifically looks for 'copy' or 'source_copy' events within Google Workspace Drive logs and triggers if more than 10 distinct documents are copied by the same user in an hour.
This rule detects the creation, modification, copying, or moving of Windows shortcut (.lnk) files into sensitive user directories such as Desktop, Documents, and Start Menu folders. Adversaries often use .lnk files for persistence, execution, or to deliver malicious payloads, especially when placed in locations that are frequently accessed or automatically executed by the system or user.
Detects the creation of files with suspicious extensions (e.g., .bat, .dll, .exe, .hta, .js, .ps1, .vbe, .vbs) within the Windows Public user folder. This activity can indicate an adversary staging malicious scripts or binaries in a location accessible to all users, potentially for execution or further distribution.
This rule detects the creation of specific configuration files (`.conf`) in the `AppData\Roaming` directory, which have been observed in the wild to be associated with Remote Access Trojans (RATs) such as VenomRAT, AsyncRAT, and Lumma Stealer. The rule looks for files ending with `datalogs.conf`, `hvnc.conf`, or `dcrat.conf` within subdirectories like `mydata`, `datalogs`, `hvnc`, or `dcrat` under `AppData\Roaming`.
Detects indicators of exploitation by threat actors during exploitation of the "SlashAndGrab" vulnerability related to ScreenConnect (ConnectWise) as reported by Team Huntress. This rule specifically looks for the creation of known malicious files and paths associated with post-exploitation activities after successful exploitation of CVE-2024-1709 and CVE-2024-1708.
Detects creation and movement of .lnk files to specific folders
This rule detects the Helldown ransomware by identifying specific byte patterns associated with its core functionalities. These functionalities include finding files for encryption, the encryption process itself, dropping a ransom note, and attempting to kill virtual machines. The rule specifically targets ELF executables, indicating it's designed for Linux systems.
Detects the creation of a file named "wermgr.exe" in an uncommon directory, which could indicate exploitation of CVE-2023-36874. The rule specifically looks for 'wermgr.exe' being created outside of standard Windows system directories, aiming to catch malicious instances masquerading as the legitimate Windows Error Reporting Manager.
Detects exploitation indicators of CVE-2022-42475, a heap-based buffer overflow vulnerability in FortiOS SSL-VPN's sslvpnd daemon. The rule specifically looks for the creation of known malicious files or configuration backups in specific directories, which are artifacts of successful exploitation.
Detects the creation of Self Extraction Directive (.sed) files in suspicious locations. These files are used by the 'iexpress.exe' utility to create self-extracting packages. Adversaries have been observed abusing this utility to create PE files with embedded .sed entries, often as a defense evasion technique.
Detects the creation of a file with an ".rdp" extension by applications that are not typically expected to create such files, such as web browsers, email clients, and chat applications. This can indicate an attempt to deliver a malicious RDP file to a user, potentially leading to initial access or defense evasion.
This rule detects the creation of files with uncommon extensions within Microsoft Office application startup folders, specifically for Word and Excel. Adversaries often leverage these folders to establish persistence by placing malicious documents, templates, or add-ins that execute automatically when the respective Office application is launched. The rule filters out common and legitimate Office file extensions to reduce false positives.
Detects file write events from or to a fake Recycle.Bin folder, which is often used by malware as a staging directory. Adversaries may create folders with names similar to legitimate system directories (e.g., "RECYCLERS.BIN" instead of "RECYCLER.BIN") to hide their malicious files and evade detection.
Detects the creation of files with names commonly used by various memory dumping tools to extract credentials from the Local Security Authority Subsystem Service (LSASS) process memory. This includes specific filenames and patterns associated with tools like Procdump, MirrorDump, PPLBlade, RustiveDump, NativeDump, and Nanodump.
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