Detections

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

2,686 detections

Detects a sequence of events indicative of data exfiltration: an unknown process creates an image file in a temporary folder, followed by the creation of an archive file (ZIP/RAR) by the same or a related process within 10 minutes, and concludes with a successful outbound network connection to a non-private IP address from the same device.
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Ibrahim Saud@tektrix
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Detections.ai Community
4 months ago
006
Detects GitHub Actions runner processes (e.g., node, bash, python) accessing sensitive CI/CD environment variables (GITHUB_TOKEN, NPM_TOKEN) followed within 30 seconds by an outbound network connection to a non-GitHub domain. This pattern is indicative of potential secret exfiltration by compromised CI/CD pipelines or malicious build steps.
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Ibrahim Saud@tektrix
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Detections.ai Community
4 months ago
006
This rule monitors for three categories of potentially suspicious network behavior: connections to common CDN providers over non-standard ports, high-volume HTTPS connections directly to IP addresses (IP-direct) bypassing standard domain resolution, and high-volume traffic to CDN infrastructure that may indicate domain fronting or C2 communication. Such patterns are often used by adversaries to mask egress traffic or exfiltrate data.
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Ankit Mehta@Secvyn
Bharat Cyber Guardians
4 months ago
105
Detects network connections to Google Cloud services (calendar.google.com, googleapis.com) over port 443 originating from processes other than known web browsers or standard Google background applications. This behavior may indicate unauthorized tools, custom scripts, or malware using Google services for command and control or data exfiltration.
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Ankit Mehta@Secvyn
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Detections.ai Community
4 months ago
002
Detects suspicious OpenProcess calls initiated by common user applications (explorer.exe, winword.exe, outlook.exe) targeting svchost.exe, followed by an outbound network connection from the target svchost.exe to the file sharing service filen.io within a 30-minute window. This behavior is indicative of process injection used to facilitate network communication or data exfiltration under the guise of a system process.
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Ankit Mehta@Secvyn
Bharat Cyber Guardians
4 months ago
002
Detects the execution of known command-line sync tools (Rclone, MEGAsync) or commands attempting to sync or move data to various cloud storage services (s3, gdrive, onedrive, mega, dropbox). The rule focuses on executions from suspicious or temporary directory paths and excludes processes signed by trusted publishers to minimize noise.
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Ankit Mehta@Secvyn
Bharat Cyber Guardians
4 months ago
002
This rule detects suspicious process command lines that indicate potential tunneling activity. It looks for commands containing 'tunnel', '--url', and '--logfile', while excluding legitimate 'cloudflared.exe' processes. This pattern is often used by adversaries to establish covert communication channels or exfiltrate data.
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nomit vyas@xoxo
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Detections.ai Community
4 months ago
108
Detects a high volume of file uploads (greater than 50) to OneDrive or SharePoint by a single user within a 5-minute window, potentially indicating bulk exfiltration of data.
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Ankit Mehta@Secvyn
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Detections.ai Community
4 months ago
002
Detects bulk file access, download, or sync operations by a single user account within a 30-minute window in Microsoft SharePoint Online or OneDrive for Business. This behavior is indicative of potential data exfiltration or unauthorized mass collection of sensitive information.
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Ankit Mehta@Secvyn
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Detections.ai Community
4 months ago
202
Detects network traffic duplication using GRE for covert exfiltration
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Darshan Thummar@Mighty
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Detections.ai Community
4 months ago
004
Detects data exfiltration split into many small HTTP POST requests
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Darshan Thummar@Mighty
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Detections.ai Community
4 months ago
004
Detects the creation or modification of a large file named 'logs.dat' (100KB or greater) within common user-related directories such as AppData, Temp, Users, or Documents. This pattern can indicate data staging for exfiltration, where an adversary collects sensitive information into a single file before attempting to move it off the system.
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nomit vyas@xoxo
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Detections.ai Community
4 months ago
008
Detects the creation or modification of an email compliance or forwarding rule containing the specific typo "Patroit". This indicator is associated with the UNC6508 threat actor's data exfiltration activities via silently BCC-forwarding sensitive emails.
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nomit vyas@xoxo
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Detections.ai Community
4 months ago
008
Tracks the Kali365 tool iterating through the victim's inbox, performing mass mail item reads or API-driven exports of mailbox contents.
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Ibrahim Saud@tektrix
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Detections.ai Community
4 months ago
3012
Detects activity associated with the Lightlife RAT, which involves PowerShell scripts accessing cryptocurrency wallet browser extension directories, staging data using archive utilities, and exfiltrating collected data to external destinations like the Telegram Bot API.
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Ibrahim Saud@tektrix
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Detections.ai Community
4 months ago
007
Detects network connections to Microsoft OneDrive or SharePoint domains from processes that are not standard, known-good applications (e.g., browsers or standard sync clients). This behavior may indicate an adversary leveraging cloud storage for command-and-control (C2) operations or data exfiltration.
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Ankit Mehta@Secvyn
Bharat Cyber Guardians
4 months ago
102
This rule detects anomalous DNS query activity that may indicate command and control (C2) or data exfiltration over the DNS protocol. It monitors for three specific indicators: excessive query volume to a single domain family within a short timeframe, the use of abnormally long DNS subdomain labels, and the transmission of TXT record queries from endpoints not acting as designated DNS servers.
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Ankit Mehta@Secvyn
Bharat Cyber Guardians
4 months ago
002
This rule detects potential data exfiltration by identifying devices that make a high number of network connections (3 or more within an hour) to various remote IPs using common file transfer and email protocols (FTP, SFTP, SMB, SMTP) on their standard ports (21, 22, 445, 25, 587). This pattern can indicate an adversary attempting to exfiltrate collected data from a compromised system.
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Ankit Mehta@Secvyn
Bharat Cyber Guardians
4 months ago
1010
Tracks network connections from non-browser processes that transmit an abnormally large volume of outbound bytes, indicating active data exfiltration. This rule specifically excludes common browser processes (chrome.exe, msedge.exe, firefox.exe) and OneDrive (onedrive.exe) to reduce false positives. It aggregates outbound network activity over 10-minute intervals and flags any instance where the total outbound bytes exceed 100MB.
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Ibrahim Saud@tektrix
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Detections.ai Community
4 months ago
309
Detects explorer.exe making DNS requests to Discord or Telegram, which is anomalous and indicates potential process injection for data exfiltration. This behavior is associated with information stealer malware like Phantom Stealer.
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Ibrahim Saud@tektrix
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Detections.ai Community
4 months ago
3013
Detects command line activity attempting to push, commit, or create repositories containing specific Miasma exfiltration signatures, which are associated with the Shai-Hulud malware variant. This rule looks for distinct string patterns in process command lines indicating the use of these signatures for data exfiltration to code repositories.
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nomit vyas@xoxo
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Detections.ai Community
4 months ago
4013
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