Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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This rule detects multiple instances of PowerShell executing commands that include 'DownloadString' within a one-hour window on the same computer and by the same account. This behavior is often associated with adversaries attempting to download and execute malicious scripts or files from remote sources.
This rule detects attempts to download raw payload files (PowerShell scripts, executables, DLLs, batch files, VBScripts, Python scripts, or shell scripts) from raw.githubusercontent.com. This activity is often associated with adversaries attempting to retrieve malicious tools or scripts from code repositories.
Payload Download from GitLab Raw
Suricata
This rule detects attempts to download executable or script files (PowerShell, executable, DLL, shell script, Python script) from the 'raw' content section of gitlab.com. This behavior is often associated with adversaries staging or retrieving malicious payloads.
Detects outbound network connections initiated by 7-Zip processes. This could indicate compromise of the 7-Zip application, potentially through exploitation of vulnerabilities like CVE-2026-48095, leading to data exfiltration or command and control communication.
Detects the command-line usage of WinGet invoking a configuration file, specifically targeting switches designed for silent, non-interactive execution. This behavior can be indicative of an adversary attempting to install or configure software without user interaction, potentially for persistence, defense evasion, or to establish command and control.
Detects the command-line usage of WinGet invoking a configuration file, specifically targeting switches designed for silent, non-interactive execution. Threat actors abuse this capability to execute arbitrary code via YAML files.
This query is a security detection rule: it flags when image file operations occur in tandem with executable file operations, which is often a sign of potential malware or intrusion activity.
Detects the creation of a file on a server system by common network utilities (curl, ftp, powershell, winscp, certutil) within a 5-minute window of a network connection to common ports (21, 22, 80, 443). This could indicate ingress tool transfer or data exfiltration attempts.
Detects MSBuild project files created beneath C:\ProgramData, an uncommon location that has been abused by threat actors to stage malicious project files for code execution.
Detects the creation of PowerShell or batch scripts within the C:\ProgramData directory, which is a common location abused by malware for payload staging and persistence. The rule specifically looks for file creation events where the initiating process is cmd.exe or powershell.exe and the file extension is either .ps1 or .bat.
Detects suspicious file downloads from the internet where common DLLs (wininet.dll, urlmon.dll, msxml3.dll) are initiating the file creation of executable, DLL, PowerShell, or batch files. The rule specifically looks for scenarios where 5 or more such files are created by the same initiating process on a device, indicating potential malicious activity like ingress tool transfer.
This rule detects PowerShell execution that combines 'irm' (Invoke-RestMethod) or 'Invoke-RestMethod' with 'iex' (Invoke-Expression) or 'Invoke-Expression'. This pattern is commonly used as a download cradle to fetch and execute malicious scripts or stage-2 infostealers, as observed in campaigns like the fake Gemini CLI installation script.
Detects the execution of mshta.exe with command-line arguments indicating an attempt to download a .7z file over HTTP or HTTPS. This behavior is often associated with malware delivery and execution.
Detects the creation of PowerShell or batch scripts within the C:\ProgramData directory, which is a common location abused by malware for payload staging and persistence. The rule specifically looks for file creation events where the initiating process is cmd.exe or powershell.exe and the file extension is either .ps1 or .bat.
This rule detects HTTP downloads of common script file types (PowerShell, VBScript, JavaScript, HTML Application, Batch, Command) from any source to the internal network. This activity is often associated with initial access or execution techniques where adversaries download malicious scripts to a compromised host.
This rule set detects various stages of the JFMBackdoor and Showboat malware, including DLL sideloading of FLTLIB.dll by fltMC.exe from non-standard directories, network connections to known C2 and staging infrastructure (namefuture.site or 23.27.201.160), command-line activity referencing a specific Pastebin URL used by Showboat for process-hiding code, and the creation of JFMBackdoor payload artifacts (flt.bin, scr.mui).
Detects network connections attempting to download the specific Bun v1.3.13 archive from the oven-sh GitHub repository, which is used by the stage 3 bootstrapper in the Miasma npm malware campaign.
Detects the execution of curl on macOS using a hardcoded Catalina user agent (Mac OS X 10_15_7) and silent/fail-fast flags (-fsSL). This pattern correlates with the macOS terminal payload delivery mechanism used in the ClearFake/ClickFix campaign.
This rule set detects various stages of the JFMBackdoor and Showboat malware, including DLL sideloading of FLTLIB.dll by fltMC.exe from non-standard directories, network connections to known C2 and staging infrastructure (namefuture.site or 23.27.201.160), command-line activity referencing a specific Pastebin URL used by Showboat for process-hiding code, and the creation of JFMBackdoor payload artifacts (flt.bin, scr.mui).
Detects the use of bitsadmin.exe to download the Argamal RAT encrypted payload file (zaesdl.dat), a technique utilized in the Stage 2 delivery script.
This rule set detects various stages of the JFMBackdoor and Showboat malware, including DLL sideloading of FLTLIB.dll by fltMC.exe from non-standard directories, network connections to known C2 and staging infrastructure (namefuture.site or 23.27.201.160), command-line activity referencing a specific Pastebin URL used by Showboat for process-hiding code, and the creation of JFMBackdoor payload artifacts (flt.bin, scr.mui).
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