Detections

Explore public detection logic contributed by the community across SIEM and rule languages.

2,521 detections

Detects usage of the built-in Windows utility 'certutil.exe' with parameters commonly used to download files from remote URLs, such as '-urlcache' or '-verifyctl'. This behavior is frequently exploited by adversaries to perform ingress tool transfer and fetch malicious payloads.
avatar
Ankit Mehta@Secvyn
Bharat Cyber Guardians
4 months ago
000
Detects the use of bitsadmin.exe to initiate file transfers, downloads, or file additions using HTTP protocols. This utility is frequently abused by adversaries for Ingress Tool Transfer by downloading malicious payloads from remote systems.
avatar
Ankit Mehta@Secvyn
avatar
Detections.ai Community
4 months ago
000
Detects usage of the built-in Windows utility 'certutil.exe' with parameters commonly used to download files from remote URLs, such as '-urlcache' or '-verifyctl'. This behavior is frequently exploited by adversaries to perform ingress tool transfer and fetch malicious payloads.
avatar
Ankit Mehta@Secvyn
avatar
Detections.ai Community
4 months ago
000
This rule detects potential file staging or persistence activities by identifying executable, library, or script files that are created in temporary folders and subsequently deleted within a short timeframe (300 seconds). This behavioral pattern is characteristic of attackers moving tools, staging payloads, or cleaning up tracks after executing malicious scripts or binaries within common directory structures like '\Temp\', '\AppData\', or '\Windows\Temp\'.
avatar
Ankit Mehta@Secvyn
avatar
Detections.ai Community
4 months ago
001
Detects the use of the built-in Windows utility 'certutil.exe' with arguments commonly used to download remote content (-urlcache -split -f) or decode base64 encoded files (-decode, -decodehex), when the output or operation occurs within temporary system directories such as Temp, AppData, or ProgramData, and the process is not signed by Microsoft.
avatar
Ankit Mehta@Secvyn
Bharat Cyber Guardians
4 months ago
000
Detects the execution of PowerShell or PWSH attempting to download external content via web-oriented cmdlets (Net.WebClient, Invoke-WebRequest, Start-BitsTransfer) using typical obfuscation flags (e.g., -WindowStyle Hidden).
avatar
Ankit Mehta@Secvyn
Bharat Cyber Guardians
4 months ago
000
Detects the use of legitimate scripting utilities (curl, wget, powershell) to download files into common, potentially writable, or temporary directories (Temp, AppData, ProgramData, Downloads). The rule specifically excludes files that are digitally signed by trusted publishers.
avatar
Ankit Mehta@Secvyn
Bharat Cyber Guardians
4 months ago
000
Detects the execution of PowerShell or PWSH attempting to download external content via web-oriented cmdlets (Net.WebClient, Invoke-WebRequest, Start-BitsTransfer) using typical obfuscation flags (e.g., -WindowStyle Hidden).
avatar
Ankit Mehta@Secvyn
avatar
Detections.ai Community
4 months ago
000
Detects the use of legitimate scripting utilities (curl, wget, powershell) to download files into common, potentially writable, or temporary directories (Temp, AppData, ProgramData, Downloads). The rule specifically excludes files that are digitally signed by trusted publishers.
avatar
Ankit Mehta@Secvyn
avatar
Detections.ai Community
4 months ago
000
Detects instances where Python-based applications or web frameworks (uvicorn, gunicorn, langflow) initiate external network requests using 'curl' or 'wget' to download files. The rule specifically looks for command-line arguments involving IP-based URLs and indicators of script execution, shell access, or known cryptocurrency miners.
avatar
Ankit Mehta@Secvyn
Bharat Cyber Guardians
4 months ago
000
Detects the creation of files with suspicious names (e.g., .xlamb, lambsys) in the /var/tmp directory, initiated by common command-line interpreters or network transfer utilities. This behavior is often indicative of malware deployment or staging in a Linux environment.
avatar
Ankit Mehta@Secvyn
avatar
Detections.ai Community
4 months ago
000
Detects instances where Python-based applications or web frameworks (uvicorn, gunicorn, langflow) initiate external network requests using 'curl' or 'wget' to download files. The rule specifically looks for command-line arguments involving IP-based URLs and indicators of script execution, shell access, or known cryptocurrency miners.
avatar
Ankit Mehta@Secvyn
avatar
Detections.ai Community
4 months ago
000
Detects a script or document containing PowerShell commands for web retrieval (Invoke-WebRequest or DownloadString) that specifically targets an .rtf file from a URL. This pattern is indicative of a staging mechanism for malware like Animateclipper.
avatar
Daniel Jeremiah@daniyyell
avatar
Detections.ai Community
4 months ago
006
Detects the creation of BITS jobs using PowerShell that initiates a connection to an external network location, excluding known Microsoft domains. This behavior is often associated with the use of BITS for downloading arbitrary files or tools from non-trusted sources, which is a common technique used in ingress tool transfer.
avatar
Ankit Mehta@Secvyn
Bharat Cyber Guardians
4 months ago
000
Detects the creation of BITS jobs using PowerShell that initiates a connection to an external network location, excluding known Microsoft domains. This behavior is often associated with the use of BITS for downloading arbitrary files or tools from non-trusted sources, which is a common technique used in ingress tool transfer.
avatar
Ankit Mehta@Secvyn
avatar
Detections.ai Community
4 months ago
000
Correlates an MSI downloaded by a browser with silent msiexec execution on the same device within fifteen minutes. This rule detects potential malicious software installation initiated by a user downloading an MSI package via a web browser, followed by a silent execution of that package using msiexec.exe. This technique is often used by attackers to install malware without user interaction.
avatar
Daniel Jeremiah@daniyyell
avatar
Detections.ai Community
4 months ago
008
Detects usage of bitsadmin downloading a file from a suspicious domain
avatar
SigmaHQ Detections@sigmaHQ
avatar
SigmaHQ
4 months ago
002
Detects the execution of certutil with certain flags that allow the utility to download files from file-sharing websites.
avatar
SigmaHQ Detections@sigmaHQ
avatar
SigmaHQ
4 months ago
102
Detects usage of the Windows certutil.exe binary to perform potentially malicious operations such as downloading files via URL cache or decoding base64/hex payloads. The rule specifically alerts when these actions occur within common user-writable or temporary directories often used by threat actors for file staging.
avatar
Ankit Mehta@Secvyn
avatar
Detections.ai Community
4 months ago
000
Detects instances where common web browsers (chrome.exe, firefox.exe, etc.) spawn command shells (cmd.exe, powershell.exe) to execute suspicious commands or perform file downloads, often indicative of an initial stage of a drive-by download or malicious script execution.
avatar
Ankit Mehta@Secvyn
avatar
Detections.ai Community
4 months ago
001
Detects a shell script containing 'fanout' in its name, created or modified in common temporary directories like /tmp or /var/tmp, matching a reported propagation workflow. This activity is indicative of lateral movement attempts.
avatar
Daniel Jeremiah@daniyyell
avatar
Detections.ai Community
4 months ago
008
Page 74 of 121