Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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Detects the execution of rundll32.exe calling a specific exported function ('open') associated with the fake lock screen DLL ('com6848.dll') to capture user passwords. This technique is often used in credential harvesting campaigns.
Detects the creation of the 'CacheDB' service or specific 'Everything' registry run keys, which are persistence mechanisms utilized by the httpMalice backdoor (a Kimsuky PebbleDash variant).
Detects the creation of specific files associated with the UAC-0184 threat group, often used in DLL sideloading scenarios. The rule looks for the presence of 'cluster-overlay64.exe', 'plane9engine.exe', 'plane9engine.dll', 'openvr_api.dll', 'kernel-diag.lib', and 'filter.bin' in common temporary or user data directories. It triggers if three or more of these files are found within an hour, or if 'kernel-diag.lib' or 'filter.bin' are present.
This rule detects suspicious activity involving PowerShell downloading content (using Invoke-WebRequest, iex, or DownloadString) followed by the creation of specific suspicious files (Browser Update.exe, update.zip, update.msi) on the same device within a 10-minute window. This correlation suggests a potential ingress of malicious tools or updates.
KQL Query
Detects network connections to the Cobalt Strike C2 URI path '/statistics/discover.txt', indicating active communication from a FrostyNeighbor Cobalt Strike beacon. Identifying this beacon is critical for finding fully compromised hosts under active remote control.
This rule detects potential ransomware activity by identifying a high volume of file encryption events. It looks for files being renamed or created with common ransomware-related extensions such as '.locked', '.crypt', '.encrypted', '.enc', or a generic pattern of a 6 or more character alphanumeric extension. The rule then counts these events within one-hour bins and alerts if more than 20 such files are detected in a single folder path.
This rule detects potential command and control (C2) communications over non-standard ports. It identifies devices that make a high number of network connections to distinct remote IP addresses on ports other than common ones (80, 443, 53, 22, 21, 25, 110, 143, 993, 995) and not to private IP ranges. The rule aggregates connection counts and distinct remote IPs over 15-minute intervals and flags activity where there are more than 30 connections and more than 2 distinct remote IPs.
Detects the creation of a specific scheduled task (TempLogA) used by ModeloRAT to establish persistence and maintain SYSTEM-level access on compromised hosts. The rule looks for `schtasks.exe` execution with `/create`, `TempLogA`, and `SYSTEM` in the command line.
Detects the creation of scheduled tasks named 'ChromeCheck' or 'EdgeCheck' that execute regsvr32.exe. This behavior is associated with Kimsuky's MemLoad loader, which establishes persistence to deploy the httpTroy backdoor.
Detects file access attempts targeting the erroneous SysWOW64 path for Kaspersky drivers. This is a specific bug and a high-confidence indicator of Amatera Stealer's anti-sandbox and evasion checks. The malware specifically looks for 'klif.sys', 'kldisk.sys', 'klhk.sys', and 'kneps.sys' within the incorrect '\Windows\SysWOW64\drivers' directory.
Detects the specific command execution wrapper used by the Rust-based HelloDoor malware (part of the Kimsuky PebbleDash cluster). The malware sets the code page to 65001 (UTF-8), suppresses output to nul, and chains the execution of a payload using cmd.exe.
This rule detects the creation of a process named 'conhost.exe' with 'System' integrity level, where the initiating process is an executable file with low global prevalence. This behavior can be indicative of malicious activity, as adversaries might use conhost.exe to execute commands or maintain persistence, especially when launched by an uncommon or suspicious executable.
Detects the creation of a specific scheduled task (TempLogA) used by ModeloRAT to establish persistence and maintain SYSTEM-level access on compromised hosts. The rule looks for `schtasks.exe` execution with `/create`, `TempLogA`, and `SYSTEM` in the command line.
Identifies network connections to known C2 and dropper infrastructure associated with the Amatera Stealer 4.0.2 Beta and ClickFix campaign. Network indicators provide a reliable detection mechanism for compromised hosts attempting to download secondary payloads or exfiltrate data.
This rule detects suspicious command-line activity involving several Windows executables (wscript.exe, cscript.exe, wmic.exe, ssh.exe) when combined with specific keywords. It looks for wscript.exe or cscript.exe executing 'SyncAppvPublishingServer.vbs', wmic.exe executing 'process', 'call', or 'create', or ssh.exe using 'ProxyCommand'. Additionally, the rule filters for command lines containing keywords like 'gal', 'i*x', 'gcm', '*stM*', 'jsdelivr.net', 'github', or 'powershell', which are often associated with malicious activity, obfuscation, or external resource loading.
Detects the execution of rundll32.exe calling a specific exported function ('open') associated with the fake lock screen DLL ('com6848.dll') to capture user passwords. This technique is often used in credential harvesting campaigns.
Detects the initial PowerShell command users are instructed to paste and run from the Windows Run dialog following a Microsoft Teams social engineering lure to deploy ModeloRAT. This rule specifically looks for PowerShell execution that downloads content from 'dropbox.com' using 'iwr' (Invoke-WebRequest), extracts an archive using 'Expand-Archive', and targets the 'appdata' directory.
Detects the creation of a SYSTEM-level scheduled task using 'schtasks.exe' that launches 'pythonw.exe' with 'Pmanager.py'. This activity is indicative of the KongTuke threat actor establishing persistence for ModeloRAT, ensuring long-term access to the compromised system.
Detects the ClickFix paste-and-run initial-access primitive used by KongTuke and other groups. This involves `explorer.exe` spawning PowerShell with defense-evasion arguments (`-NoProfile`, `-ExecutionPolicy Bypass`, `-WindowStyle Hidden`) and a downloader chain targeting cloud file-sharing services. The combination of `explorer.exe` parent (user typing into Run dialog), hidden execution flags, `Invoke-WebRequest`, and `Expand-Archive` in one command line is the defining fingerprint of the technique.
Detects the usage of certutil.exe to download files, or encode/decode data. This behavior is commonly associated with Living Off The Land Binaries (LOLBins) exploitation to bypass security controls.
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