Detections

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

2,686 detections

Detects Chromium-based browsers (e.g., Microsoft Edge, Google Chrome) being launched with specific command-line arguments that attempt to hide the browser window (headless mode or positioning it off-screen).
This technique was observed in the "Operation MacroMaze" campaign, attributed to APT28, where it was used to silently execute scripts and exfiltrate data using legitimate services like webhook.site.
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Tim Peck@timpeck
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Detections.ai Community
9 months ago
1041
Detects outbound network traffic to known infrastructure used in OpenClaw malicious skill delivery or credential exfiltration. These IOCs were identified in the NSFOCUS report on OpenClaw security risks.
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Ethan Andrews@eandrews
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Federal Signal Detections
9 months ago
160162
This rule set detects network communication associated with macOS infostealers, including C2 infrastructure, SHub stealer heartbeat and exfiltration, and ClickFix staging and landing pages. It identifies specific hostnames and URI paths used by these malicious campaigns.
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Daniel Jeremiah@daniyyell
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Detections.ai Community
9 months ago
0070
Detects a sequence of events associated with a malicious Notepad++ update. This malicious process executes reconnaissance commands.
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J S@jsh0x
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Detections.ai Community
9 months ago
77622,550
Detects the use of curl.exe to upload data to the temp.sh file-sharing service. This technique has been observed in post-compromise reconnaissance activities, including those following Notepad++ compromises.
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J S@jsh0x
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Detections.ai Community
9 months ago
36122,292
Detects the execution of S3 Browser or Office installation executables, followed by network traffic from the same host to known cloud storage or file-sharing sites within a short time window. This behavior aligns with Muddled Libra's method of staging and exfiltrating sensitive data, such as PST files, to attacker-controlled cloud buckets.
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Ethan Andrews@eandrews
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Federal Signal Detections
9 months ago
14078
Detects file access or download activity from SharePoint or OneDrive where the user agent is PowerShell. This TTP has been associated with UNC6671 (related to ShinyHunters) for data exfiltration from SaaS applications.
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nomit vyas@xoxo
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Detections.ai Community
9 months ago
150171
Detects an unusual exfiltration technique where a URL, typically from temp.sh, is embedded within the User-Agent string of an HTTP request. This TTP was observed in the Notepad++ supply chain attack in 2025 for exfiltrating system information.
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nomit vyas@xoxo
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Detections.ai Community
9 months ago
1083
Detects when a Network Attached Storage (NAS) or Internet of Things (IoT) device establishes multiple or high-volume outbound SSH/SFTP connections to an external IP address. This behavior can indicate that the device has been compromised and is being used as an 'Operational Relay Box' (ORB) to proxy malicious traffic, mask C2 communications, or exfiltrate data.
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michael lohn@mlohn1984
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Detections.ai Community
9 months ago
6075
Detects high-risk command execution (e.g., curl, wget, ssh) originating from AI agent runtime processes like OpenClaw/ClawdBot. This behavior is associated with threat actors using backdoored 'skills' to exfiltrate data or move laterally.
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nomit vyas@xoxo
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Detections.ai Community
9 months ago
6071
Detects a specific data exfiltration pattern observed in the Notepad++ supply chain attack. An attacker uses curl.exe to upload a file containing reconnaissance data to the temp.sh file sharing service. Subsequently, a beacon is sent to the C2 where the User-Agent string of the HTTP request contains the temp.sh URL for the exfiltrated data.
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Tim Peck@timpeck
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Detections.ai Community
9 months ago
670689
Detects file access or download operations from Microsoft SharePoint Online where the User-Agent string indicates the use of PowerShell. This behavior has been observed in campaigns by threat groups for bulk data exfiltration.
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g host@ghosty
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Detections.ai Community
9 months ago
242358
Detects a sequence of system reconnaissance commands followed by data exfiltration to temp.sh, a TTP used in the Notepad++ supply chain attack.
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nomit vyas@xoxo
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Detections.ai Community
9 months ago
4084
Detects HTTP requests where the User-Agent string contains a full URL pointing to 'temp.sh'. This technique was observed in the Notepad++ supply chain attack where attackers passed the URL of exfiltrated data back to their C2 server within the User-Agent header.
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nomit vyas@xoxo
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Detections.ai Community
9 months ago
0065
Detects when a web browser or the Dropbox client accesses a file that is potentially sensitive, based on file name or security labels. This may indicate unauthorized data exfiltration of HBI (Highly Business-Impact) data to a personal or public Dropbox account.
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nomit vyas@xoxo
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Detections.ai Community
9 months ago
3031
This rule detects the creation of 'rclone.conf' file on a device. The 'rclone.conf' file is a configuration file used by the Rclone utility, a command-line program for syncing files with various cloud storage services. The presence of this file often indicates the installation or use of Rclone, which can be leveraged by adversaries for data exfiltration to cloud storage.
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Rudra Verma@Rudraverma
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CyberHawk Consultancy
9 months ago
15099
Detects the use of curl.exe where the User-Agent header is abused to pass a URL. This is a specific technique observed in the Notepad++ supply chain attack where attackers used it to exfiltrate reconnaissance data by sending a temp.sh URL to their C2 server.
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Aaron Beardslee@abeardslee
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Securonix Threat Research
9 months ago
120130
Detects outbound network traffic to legitimate cloud storage domains (filen.io, icedrive.net, koofr.net) known to be abused by APT28 for Command and Control (C2) and data exfiltration as part of Operation Phantom Net Voxel.
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nomit vyas@xoxo
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Detections.ai Community
9 months ago
2028
Detects the creation of a directory junction pointing to a OneDrive synchronization folder. This is a key component of the 'DoubleDrive' technique, used to force the synchronization of arbitrary local files for data exfiltration or cloud-based ransomware encryption.
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nomit vyas@xoxo
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Detections.ai Community
9 months ago
0027
Detects a process reading a .env file, which often contains sensitive credentials like API keys. This is often the first step of a data exfiltration pattern where the credentials are then sent to an attacker-controlled server. This behavior was observed in the malicious 'rankaj' OpenClaw skill. This rule should be correlated with subsequent network activity from the same process to a rare destination.
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Elgonad .@elgonad
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Detections.ai Community
9 months ago
4037
Detects attempts to exploit a vulnerability in Google Looker (CVE-2025-12743) by using error-based SQL injection within LookML dimension definitions. Attackers can use this to exfiltrate the internal Looker database.
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Tim Peck@timpeck
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SecOps Signals
9 months ago
2070
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