Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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Monitors for the creation of 'C:\ProgramData\AppxProvisioning.xml'. The updated CoolClient backdoor, used by the HoneyMyte APT group, uses this specific file path to store XOR-encrypted clipboard and active window monitoring data.
This rule detects the specific artifacts associated with the '01flip' ransomware. It triggers when a ransom note named 'RECOVER-YOUR-FILE.TXT' is created, followed by the rapid renaming of more than 10 files on the same host with the '.01flip' extension. The correlation is based on the hostname and the process command line within a 5-minute window, indicating a coordinated ransomware attack.
Detects when a potentially malicious file (such as a macro-enabled document, executable, or script) is created within a directory configured as a Microsoft Office Trusted Location. Attackers may place malicious files in these locations to ensure they are opened by the user without security warnings (like Protected View or macro-blocking), facilitating code execution. This rule correlates file creation events with trusted paths dynamically enumerated from the device's registry.
During a ransomware attack a malicious .tmp file gets dropped and executed in program data directory.
Detects the creation or modification of a browser extension's manifest.json file configured to inject a script into the 'MAIN' world context of chatgpt.com. This technique allows the extension to bypass the isolated content script environment, hook native APIs like window.fetch, and steal session tokens, as seen in a campaign targeting ChatGPT users.
Detects the creation or modification of a browser extension's manifest.json file that overrides the default search provider to a known malicious or suspicious domain. This technique is used by extensions like 'DPS Websafe' and 'Stock Informer' for search hijacking.
Detects potential Remcos RAT installation by correlating the creation of an executable in a user's AppData directory with the creation of a registry run key for persistence.
Detects the creation of a hidden directory under %LOCALAPPDATA%\Google Chrome. This technique is used by a Vietnamese threat actor associated with the PureRAT campaign to stage malicious components while blending in with legitimate application data.
Detects the presence and execution of Defendnot components. This tool is used to disable Microsoft Defender by exploiting the Windows Security Center trust model, which involves injecting a malicious DLL into the trusted Task Manager process.
Detects the creation of a macOS Launch Agent by a suspicious process or with a name matching patterns used by the BlueNoroff group. BlueNoroff uses Launch Agents for persistence on compromised macOS systems.
Detects the installation of malicious browser extensions associated with the DarkSpectre threat actor, which includes the ShadyPanda, Zoom Stealer, and GhostPoster campaigns. Detection is based on known malicious extension IDs observed in file paths and registry keys for Chrome, Edge, and Firefox.
This rule detects suspicious process creation patterns indicative of the MuddyWater (also known as RustyWater) APT group. Specifically, it looks for Microsoft Office applications (Word, Excel, PowerPoint) launching scripting or Living Off The Land Binaries (LOLBins) such as cmd.exe, powershell.exe, mshta.exe, rundll32.exe, wscript.exe, or cscript.exe. The detection is further narrowed down by checking if these processes are created in suspicious writable paths like ProgramData, Users\Public, AppData\Roaming, or AppData\Local\Temp. Additionally, the rule includes optional enrichment for known MuddyWater/RustyWater payload names (reddit.exe, art.exe, cloud.exe, nginx.exe), persistence via the Run registry key, and the dropping of a specific staging artifact named 'CertificationKit.ini'.
Detects the installation of malicious Chrome extensions known to steal ChatGPT/DeepSeek conversations by looking for the creation of files in directories named with specific malicious extension IDs. This rule identifies file creation events within folders corresponding to known malicious Chrome extension IDs, indicating their installation on a device.
Detects ransom note creation associated with Yurei ransomware.
Detects AI/ML model configuration files (e.g., config.json, model_config.yaml) containing a suspicious '_target_' value, which could indicate an attempt to exploit a Hydra instantiation vulnerability for remote code execution (RCE).
Detects a script process (wscript.exe/cscript.exe) creating files in a specific HP-themed path and then creating a Run key for persistence, indicative of the Turla Kazuar VBScript dropper.
This query detects when a user downloads a potentially malicious or unauthorized file type (e.g., executable, script, archive) from the internet using a web browser. It leverages endpoint file creation events from data mapped to the Elastic Common Schema (ECS).
This rule detects when Microsoft Office applications (Word, Excel, PowerPoint) create INI files within the `C:\ProgramData\` directory. This behavior can be indicative of malicious activity, such as macro-enabled documents dropping configuration files or payloads, or other forms of malware attempting to establish persistence or store data in a less scrutinized location.
This detection identifies the creation of an Internet Shortcut (.url) file in a user's Startup folder. This is a persistence mechanism (T1547.001) used by adversaries like the PHALT#BLYX campaign, which created a .url file pointing to a local executable using the 'file:///' protocol to launch malware at logon. The rule specifically looks for the creation of '.url' files in the Startup folder and includes a filter for a known IOC ('DeleteApp.url') from the PHALT#BLYX campaign, as well as excluding common legitimate processes like web browsers and explorer.exe as initiating processes.
Detects the creation and subsequent execution of a masqueraded binary named "CertificationKit.ini" in the C:\ProgramData directory. This technique has been observed in recent MuddyWater campaigns where a .ini file extension is used to disguise an executable, which is then launched via cmd.exe.
vvs-stealer
KQL
This rule detects activities associated with the VVS Stealer malware, as described in the Palo Alto Networks Unit 42 blog. It identifies the malware through specific SHA256 hashes of known VVS Stealer executables, network connections to hardcoded Discord webhook URLs used for exfiltration, persistence mechanisms via creation of executables in Windows startup folders, creation of '_vault.zip' files (likely containing stolen data), and suspicious Discord-related process activity indicative of the stealer's operation.
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