Detections

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

2,521 detections

KQL Query from file: Hunting NonEuclid RAT
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Steven Lim@KQLWizard
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SlimKQL
1 year ago
2039
KQL Query
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Steven Lim@KQLWizard
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SlimKQL
1 year ago
2030
Detects the execution of 'certutil.exe' with specific command-line flags ('urlcache' or 'verifyctl') used to download files from known file-sharing or content delivery websites. This technique is often leveraged by adversaries to transfer malicious tools or payloads into a compromised environment, bypassing traditional security controls.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
1 year ago
1017
Detects the execution of PowerShell commands that attempt to install MSI packages via the
Windows Installer COM object (`WindowsInstaller.Installer`) hosted remotely.
This could be indication of malicious software deployment or lateral movement attempts using Windows Installer functionality.
And the usage of WindowsInstaller COM object rather than msiexec could be an attempt to bypass the detection.
Yamato Security Hayabusa@YamatoSecurityHayabusa
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Yamato Security Hayabusa Rules
1 year ago
019
Detects the execution of PowerShell commands that attempt to install MSI packages via the
Windows Installer COM object (`WindowsInstaller.Installer`) hosted remotely.
This could be indication of malicious software deployment or lateral movement attempts using Windows Installer functionality.
And the usage of WindowsInstaller COM object rather than msiexec could be an attempt to bypass the detection.
Yamato Security Hayabusa@YamatoSecurityHayabusa
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Yamato Security Hayabusa Rules
1 year ago
008
Detects suspicious use of command-line tools such as curl or wget to download remote content - particularly scripts - into temporary directories (e.g., /dev/shm, /tmp), followed by immediate execution, indicating potential malicious activity. This pattern is commonly used by malicious scripts, stagers, or downloaders in fileless or multi-stage Linux attacks.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
1 year ago
6044
Detects potential malicious JavaScript obfuscated using the JSFireTruck technique, characterized by the repeated use of characters like [], (), !, and +. This rule looks for the presence of multiple distinct characters from the core JSFireTruck set within web response bodies.
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Robert Fly@robertfly
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Detections.ai Community
1 year ago
1150
Detects potential malicious JavaScript obfuscated using the JSFireTruck technique, specifically looking for the combination of core JSFireTruck characters and checks for document.referrer, often used to target traffic from search engines.
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Robert Fly@robertfly
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Detections.ai Community
1 year ago
0040
Attackers can use findstr to hide their artifacts or search specific strings and evade defense mechanism
Yamato Security Hayabusa@YamatoSecurityHayabusa
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Yamato Security Hayabusa Rules
1 year ago
0027
Detects potential malicious JavaScript obfuscated using the JSFireTruck technique, specifically looking for the combination of core JSFireTruck characters and checks for document.referrer, often used to target traffic from search engines.
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Robert Fly@robertfly
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Detections.ai Community
1 year ago
1135
Detects network connections to known malicious domains and IPs associated with the Discord Invite Loop Hole campaign, including payload hosting, C2, and data exfiltration via Discord webhooks.
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Robert Fly@robertfly
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Detections.ai Community
1 year ago
0134
Detects an executable in the Windows folder accessing github.com
Yamato Security Hayabusa@YamatoSecurityHayabusa
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Yamato Security Hayabusa Rules
1 year ago
2024
Detects potential exploitation of remote code execution vulnerability CVE-2025-33053
by monitoring suspicious image loads from WebDAV paths. The exploit involves malicious executables from
attacker-controlled WebDAV servers loading the Windows system DLLs like gdi32.dll, netapi32.dll, etc.
Yamato Security Hayabusa@YamatoSecurityHayabusa
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Yamato Security Hayabusa Rules
1 year ago
1023
Detects potential exploitation of remote code execution vulnerability CVE-2025-33053
which involves unauthorized code execution via WebDAV through external control of file names or paths.
The exploit abuses legitimate utilities like iediagcmd.exe or CustomShellHost.exe by manipulating
their working directories to point to attacker-controlled WebDAV servers, causing them to execute
malicious executables (like route.exe) from the WebDAV path instead of legitimate system binaries
through Process.Start() search order manipulation.
Yamato Security Hayabusa@YamatoSecurityHayabusa
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Yamato Security Hayabusa Rules
1 year ago
0022
Detects potential exploitation of remote code execution vulnerability CVE-2025-33053
which involves unauthorized code execution via WebDAV through external control of file names or paths.
The exploit abuses legitimate utilities like iediagcmd.exe or CustomShellHost.exe by manipulating
their working directories to point to attacker-controlled WebDAV servers, causing them to execute
malicious executables (like route.exe) from the WebDAV path instead of legitimate system binaries
through Process.Start() search order manipulation.
Yamato Security Hayabusa@YamatoSecurityHayabusa
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Yamato Security Hayabusa Rules
1 year ago
1021
Detects the execution of PowerShell commands that attempt to install MSI packages via the Windows Installer COM object (`WindowsInstaller.Installer`) hosted remotely. This could be an indication of malicious software deployment or lateral movement attempts using Windows Installer functionality. The usage of the WindowsInstaller COM object rather than msiexec could be an attempt to bypass detection.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
1 year ago
0013
Detects the usage of curl.exe, KeyScramblerLogon, or other non-standard/suspicious processes used to create Autoit3.exe.
This activity has been associated with DarkGate malware, which uses Autoit3.exe to execute shellcode that performs
process injection and connects to the DarkGate command-and-control server. Curl, KeyScramblerLogon, and these other
processes consitute non-standard and suspicious ways to retrieve the Autoit3 executable.
Yamato Security Hayabusa@YamatoSecurityHayabusa
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Yamato Security Hayabusa Rules
1 year ago
0018
Detects a curl process start on Windows, which could indicates a file download from a remote location or a simple web request to a remote server
Yamato Security Hayabusa@YamatoSecurityHayabusa
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Yamato Security Hayabusa Rules
1 year ago
0016
Detects the execution of a PowerShell command that downloads and executes a script from Pastebin, as seen in the Discord Invite Loop Hole campaign. This is the first stage after the user is tricked into pasting the command.
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Robert Fly@robertfly
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Detections.ai Community
1 year ago
0020
Detects a suspicious Microsoft desktopimgdownldr file creation that stores a file to a suspicious location or contains a file with a suspicious extension
Yamato Security Hayabusa@YamatoSecurityHayabusa
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Yamato Security Hayabusa Rules
1 year ago
0015
Detects a suspicious Microsoft certutil execution with sub commands like 'decode' sub command, which is sometimes used to decode malicious code
Yamato Security Hayabusa@YamatoSecurityHayabusa
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Yamato Security Hayabusa Rules
1 year ago
1014
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