Detections

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

4,466 detections

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.
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Brandon Rodriguez@BMRodriguez
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Federal Signal Detections
5 months ago
10152
This rule detects the creation of a scheduled task named 'Update Tracker Task' using either 'schtasks.exe' or PowerShell cmdlets ('Register-ScheduledTask', 'New-ScheduledTask'). This specific task name has been associated with the Matanbuchus 3.0 loader.
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Collin Lairamore@Bollinmore
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XQL Threat Forge
6 months ago
10142
Detects programmatic file access in Microsoft 365/SharePoint environments where the operation is logged as 'FileAccessed' but the UserAgent indicates a scripting library like python-requests or PowerShell. This behavior is indicative of data exfiltration techniques used by actors like UNC6671 (BlackFile) who stream file content directly to bypass traditional 'FileDownloaded' monitoring.
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Matt Brady@mbrady5299
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Detections.ai Community
6 months ago
70154
This rule detects the creation of a scheduled task named 'Update Tracker Task' using either 'schtasks.exe' or PowerShell cmdlets ('Register-ScheduledTask', 'New-ScheduledTask'). This specific task name has been associated with matanbuchus 3.0 loader.
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Collin Lairamore@Bollinmore
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Detections.ai Community
6 months ago
10122
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.
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Tim Peck@timpeck
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Detections.ai Community
6 months ago
340845
Detects the variable splitting technique in cmd.exe specifically designed to obfuscate the invocation of PowerShell (e.g., set x=pow&&set y=ershell). This technique is used in the InstallFix campaign to bypass static command-line monitoring.
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Ethan Andrews@eandrews
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Federal Signal Detections
6 months ago
1601,120
Detects PowerShell scripts attempting to overwrite the amsiContext buffer using Runtime.InteropServices.Marshal.WriteInt32 to disable AMSI scanning. This technique was notably observed in the InstallFix campaign delivering RedLine Stealer.
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Tim Peck@timpeck
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Detections.ai Community
6 months ago
1801,142
This rule detects suspicious child processes spawned by the BeyondTrust Remote Support client (bomgar-scc), which could indicate post-exploitation activity following a compromise via vulnerabilities like CVE-2026-1731. It looks for high-risk command line patterns and suspicious child processes commonly used for reconnaissance and payload execution.
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Ethan Andrews@eandrews
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Federal Signal Detections
6 months ago
100311
This rule detects the creation of a scheduled task named 'Update Tracker Task' using either 'schtasks.exe' or PowerShell cmdlets ('Register-ScheduledTask', 'New-ScheduledTask'). This specific task name has been associated with the Matanbuchus 3.0 loader.
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Collin Lairamore@Bollinmore
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Detections.ai Community
6 months ago
50212
Detects cmd.exe spawning PowerShell to download a file using System.Net.WebClient to the Windows Temp directory. This pattern was observed in the DAEMON Tools supply chain attack to drop secondary payloads.
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Ethan Andrews@eandrews
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Federal Signal Detections
6 months ago
170479
Detects the creation of a scheduled task named 'MicrosoftEdgeUpdate' that leverages PowerShell to download and execute a payload. This technique was observed in an Iranian-Nexus operation against Oman's government.
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Ethan Andrews@eandrews
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Federal Signal Detections
6 months ago
60280
This rule detects various activities associated with CloudZ and Pheno malware, including persistence mechanisms via scheduled tasks, execution of .NET loaders (regasm.exe), payload downloads using common utilities (curl, powershell, bitsadmin) from known staging patterns, reconnaissance artifacts, and network connections to known CloudZ infrastructure.
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Daniel Jeremiah@daniyyell
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Detections.ai Community
6 months ago
30187
This rule detects suspicious command-line patterns indicative of obfuscation, encoding, or stealth techniques often used by adversaries. It scores various characteristics such as hidden window styles, variable manipulation, string operations, and decoding functions (e.g., Base64, Gzip, Deflate). The rule filters out known legitimate processes and command-line boilerplate to reduce false positives and classifies detections based on the highest scoring obfuscation category.
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Sotiris Mavrakis@smavrakis
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Detections.ai Community
6 months ago
90454
This rule detects common PowerShell patterns used for downloading content from the internet and then executing it. It looks for a combination of download-related commands/objects (e.g., DownloadString, Invoke-WebRequest, Net.WebClient) and execution-related commands/objects (e.g., IEX, Invoke-Expression, Invoke-Command, ScriptBlock) within PowerShell command-line activity. This behavior is frequently observed in malware and adversary tradecraft for initial access, execution, and persistence.
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F S@Fsdr
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Detections.ai Community
6 months ago
251410
This rule detects PowerShell commands indicative of reflective code loading, specifically looking for the use of 'Assembly' and 'Load' or 'GetType' and 'Invoke' within PowerShell command arguments. It filters out common noise associated with legitimate PowerShell operations like PSGet, Cursor, and internal Microsoft PowerShell modules to reduce false positives.
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F S@Fsdr
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Detections.ai Community
6 months ago
192373
Detects the explicit loading of the Exchange Management snap-in by PowerShell, often a precursor to mailbox exfiltration as seen in SHADOW-EARTH-053 activity. This activity can indicate an adversary is preparing to interact with Exchange mailboxes.
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Ethan Andrews@eandrews
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Federal Signal Detections
6 months ago
60330
Detects when AI-integrated IDEs or coding agents spawn sensitive child processes such as command shells (cmd, powershell, pwsh) or web transfer tools (curl, wget). This behavior could indicate malicious activity if an attacker compromises the AI tool or if the tool itself is misused to execute arbitrary commands or exfiltrate data.
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Bhojraj Joshi@cybrbhojrajjoshi
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Detections.ai Community
6 months ago
70297
Detects PowerShell commands attempting to query the Terminal Services Remote Connection Manager event log for Event ID 1149. This may indicate adversary reconnaissance of RDP connection history to identify targets for lateral movement.
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Bryant Smith@flowstate
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Detections.ai Community
6 months ago
90337
Detects PowerShell commands reading their own batch file contents via the %~f0 self-reference combined with .NET ReadAllText, the technique Deep#Door uses to extract its embedded Python payload from install_obf.bat without external network retrieval. The combination of these specific patterns has near-zero legitimate use.
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Tim Peck@timpeck
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SecOps Signals
6 months ago
20198
Detects PowerShell command lines utilizing Invoke-WebRequest (or aliases) with a spoofed "ZoomSDK" User-Agent for payload delivery. This behavior is associated with BlueNoroff ClickFix campaigns targeting the Web3 sector.
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Tim Peck@timpeck
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Detections.ai Community
6 months ago
220491
Detects PowerShell processes executing commands that include common download cradle patterns (nop, w hidden, bypass) and attempt to retrieve content over HTTP/HTTPS. This often indicates an attempt to download and execute malicious scripts or payloads from a remote source.
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nomit vyas@xoxo
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Detections.ai Community
6 months ago
4077
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