Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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This rule detects when an executable file (.exe) creates another executable file (.exe). This behavior can be indicative of malicious activity such as malware dropping its components, or legitimate software installers. The rule includes extensive filters to reduce false positives from common system processes, update utilities, and known application behaviors like those from Microsoft Teams, VS Code, and GitHub Desktop.
Detects the execution of Impacket's wmiexec.py tool by identifying characteristic command-line arguments and temporary file creation patterns. Specifically, it looks for process launches with command lines redirecting output to a hidden ADMIN$ share path (e.g., `1>\ADMIN$\__... 2>&1`) or the creation of files in the `\windows\__` directory, which are common artifacts left by wmiexec.py.
Detects the creation of the default output filename used by the wmiexec tool, which is part of the Impacket toolkit. This typically indicates lateral movement or execution of commands via WMI.
This rule detects the creation of specific files associated with the Octopus Scanner malware. The malware creates files named 'Cache134.dat' and 'ExplorerSync.db' within the user's local AppData\Microsoft directory. This activity is indicative of the malware's presence and operation.
This rule detects when a file is downloaded via HTTP and subsequently created on a system, where the file's SHA256 hash and the URL it was downloaded from are identified as malicious through VirusTotal relationships. It correlates HTTP network events with file creation events, ensuring the download precedes the file creation, and then enriches this information with VirusTotal data to confirm the malicious nature of the file and its source URL.
This rule detects attempts to extract the ntds.dit file, which contains Active Directory credential information, using `wmic` in conjunction with `vssadmin.exe` or `ntdsutil.exe`. It also identifies the creation of `.dit` files in temporary directories and specific ESENT application event logs associated with NTDS database activity. This activity is indicative of credential dumping, a common post-exploitation technique.
This rule detects web traffic to a recently expired domain followed by the creation of an executable (.exe) file on the same host. It correlates network access events with WHOIS data to identify expired domains and then looks for subsequent file creation events where the file path ends with '.exe'. The file creation must occur after the network access event on the same principal hostname.
This rule identifies process and file creation events where the associated file's SHA256 hash is present in Google Safe Browsing data and has been observed for a duration greater than 7 days (604,800 seconds). This long observation period for a Safe Browsing-flagged hash could indicate persistent malware or a file that has been present on systems for an extended time before being flagged or detected.
This rule detects the creation or launch of processes or files that match known Indicators of Compromise (IOCs) from a MISP instance and exhibit low prevalence (3 or fewer occurrences) over a 10-day rolling period. This combination suggests potentially malicious activity that is not widespread, indicating a targeted attack or early-stage malware.
This rule detects the creation or execution of files that have been identified as malicious by Google Safe Browsing. It correlates process launch or file creation events with a list of known malicious file SHA256 hashes provided by the Google Safe Browsing service, specifically looking for files categorized as 'SOFTWARE_MALICIOUS' with 'CRITICAL' severity.
This rule detects the creation or launch of processes or files that have a SHA256 hash matching an Indicator of Compromise (IOC) from MISP, specifically when the file is identified by VirusTotal as an MS Office DOCX file type. It correlates process/file events with threat intelligence data to identify potentially malicious activity involving weaponized documents.
This rule detects the creation of new files or the launch of processes whose SHA256 hash matches an indicator of compromise (IOC) from a MISP feed. It correlates process launch or file creation events with known malicious SHA256 hashes ingested from MISP, indicating potential malware execution or presence on a system.
Detects the creation of specific files within the ProgramData directory that have been observed in campaigns by the Forest Blizzard APT group (also known as Star Blizzard, SEABORGIUM, Callisto Group, TA446, COLDRIVER). These files include those with names like 'prnms003.inf_', 'prnms009.inf_', '.save', 'doit.bat', 'execute.bat', 'servtask.bat', and '.dll' files containing 'wayzgoose', often found in subdirectories under common vendor names within ProgramData.
Detects the creation of a file with the ".pdf" extension by the "RegEdit.exe" process. This indicates that a user is trying to print/save a registry key as a PDF in order to potentially extract sensitive information and bypass defenses.
Detects Deno writing a file from a direct HTTP(s) call to the AppData folder or introducing its own malicious DLL. This behavior may indicate an attempt to execute remotely hosted, potentially malicious files through Deno.
Detects the creation of files with specific naming patterns, such as '\sessionresume_[a-zA-Z]{8}$', which are known to be used by the Impacket toolkit, particularly its secretsdump.py module. This activity often indicates an attempt to dump credentials from a compromised system.
Files with well-known filenames (parts of credential dump software or files produced by them) creation
Detects creation of files with names used by different memory dumping tools to create a memory dump of the LSASS process memory, which contains user credentials
Identify process creations that are tagged exploit in VT
Alert on downloading a known file hash from a known IP with VT Relationships.
Detects the creation of the default dump file used by Outflank Dumpert tool. A process dumper, which dumps the lsass process memory
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