Detections

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

1,224 detections

Detects a MeshCentral agent launched from temporary directories or Oracle PeopleSoft application paths. This activity is often associated with remote access software used by adversaries.
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Daniel Jeremiah@daniyyell
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Detections.ai Community
4 months ago
103
Detects inspection of active mounts or /etc/hosts for PeopleSoft, configuration home, NFS, or environment naming patterns. This rule specifically looks for commands like 'mount', 'cat', 'grep', 'bash', or 'sh' being executed with command-line arguments that include 'mount' and PeopleSoft-related terms ('psoft', 'ps_config', 'nfs'), or '/etc/hosts' with PeopleSoft-related terms ('psoft', 'csprd', 'peoplesoft', 'psft').
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Daniel Jeremiah@daniyyell
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Detections.ai Community
4 months ago
203
Detects external HTTP POST requests to the Oracle PeopleSoft Environment Management Hub or Integration Broker listening connector. This activity could indicate an attempt to exploit public-facing Oracle PeopleSoft applications.
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Daniel Jeremiah@daniyyell
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Detections.ai Community
4 months ago
003
Detects a sender transmitting many attachment-bearing messages or a large aggregate attachment volume to external recipients within thirty minutes. This could indicate data exfiltration or a compromised account being used to send spam or malware.
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Daniel Jeremiah@daniyyell
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Detections.ai Community
4 months ago
003
This rule detects successful network connections from devices to a list of known botnet command and control (C2) IP addresses. This indicates potential compromise and communication with malicious infrastructure.
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Ibrahim Saud@tektrix
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Detections.ai Community
4 months ago
1003
Detects inbound email delivered from external Microsoft 365 tenants (@*.onmicrosoft.com) which may be attempting to impersonate legitimate senders. Threat actors register disposable or lookalike M365 tenants to abuse Microsoft's native SPF/DKIM authentication and bypass email security controls.
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JP Williams@SiriusCyberntx
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Detections.ai Community
5 months ago
270582
This rule detects inbound emails that have failed SPF and/or DKIM authentication checks and presents evidence of post-delivery user interaction. Authentication failures on inbound email are a strong indicator of email spoofing or unauthorized sending infrastructure, commonly associated with phishing campaigns targeting organizational users.
Unlike basic phishing detections that alert on email receipt alone, this rule correlates authentication failures with downstream activity to identify attacks that have progressed beyond the initial delivery phase of the MITRE ATT&CK kill chain. Specifically, the rule looks for three post-delivery indicators tied to the suspicious email:

URL Click Activity — A recipient clicked a link contained within the flagged email, suggesting potential engagement with a malicious payload or credential harvesting site
Malicious Attachment Match — An attachment delivered by the flagged email matched a known malicious SHA-256 hash present in the Threat Intelligence table, indicating a known-bad payload was delivered to the recipient
Endpoint File Creation — A file was created on an endpoint whose SHA-256 hash matches an attachment from the flagged email, suggesting the attachment was saved or executed on a host device

Any email triggering one or more of these conditions is surfaced with full metadata including sender, recipient, subject, SPF/DKIM/DMARC results, and the associated IOC for analyst review.
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Kevin Nguyen@kevin
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Detections.ai Community
5 months ago
140449
This rule detects unusual outbound network connections from devices to well-known public DNS servers (Google DNS, Cloudflare DNS, Quad9, OpenDNS) on ports other than the standard DNS (53), HTTP (80), or HTTPS (443) ports. A high number of such connections (5 or more within an hour) could indicate command and control activity, data exfiltration, or the use of DNS tunneling.
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Ankit Mehta@Secvyn
Bharat Cyber Guardians
4 months ago
004
This rule detects successful network connections from devices to a list of known botnet command and control (C2) IP addresses. This indicates potential compromise and communication with malicious infrastructure.
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Ankit Mehta@Secvyn
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Detections.ai Community
4 months ago
104
Detects the creation or modification of directories named 'logs', 'persistantstorage', or 'scratchpad' within paths related to PeopleSoft PSEMHUB. This activity could indicate an attacker staging data or setting up persistence, as observed in campaigns like ShinyHunters targeting the education sector with Oracle exploits.
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Daniel Jeremiah@daniyyell
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Detections.ai Community
4 months ago
102
Correlates Windows 365 or Citrix client execution with network share discovery commands by the same account on the same device within thirty minutes. This rule detects potential post-compromise activity where an attacker might be using a VDI session to enumerate network shares.
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Daniel Jeremiah@daniyyell
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Detections.ai Community
4 months ago
002
Detects a single process initiating SSH connections to a large number of distinct private IP addresses within a ten-minute window. This behavior can indicate automated lateral movement, credential spraying, or other malicious network reconnaissance activities.
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Daniel Jeremiah@daniyyell
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Detections.ai Community
4 months ago
002
Detects the unique start and end markers (VAPTb3gin, VAPTfin) used by the VAPT autonomous framework to confirm exploit success across network or host logs.
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Ibrahim Saud@tektrix
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Detections.ai Community
4 months ago
002
Detects Java or WebLogic processes spawning command interpreters on an application server, which may indicate successful remote code execution.
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Daniel Jeremiah@daniyyell
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Detections.ai Community
4 months ago
001
Detects a remote access utility spawning command shells or script interpreters, indicating hands-on-keyboard activity through an RMM session.
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Daniel Jeremiah@daniyyell
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Detections.ai Community
4 months ago
101
This rule detects successful network connections from devices to a list of known botnet command and control (C2) IP addresses. This indicates potential compromise and communication with malicious infrastructure.
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Ankit Mehta@Secvyn
Bharat Cyber Guardians
4 months ago
102
Detects when a single user account performs 5 or more account creations (EventID 4720) or account enables (EventID 4722) within a one-hour period. This activity could indicate malicious behavior, such as an attacker establishing persistence or expanding access, or it could be a sign of automated account provisioning.
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Ankit Mehta@Secvyn
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Detections.ai Community
5 months ago
103
This detection identifies suspicious execution of update.exe processes launched by svchost.exe from user-writable directories such as AppData, Temp, Downloads, and Public folders.

This behavior is associated with malware techniques observed in the MiniFast campaign, where attackers use fake updater binaries and service-based execution chains to evade detection and maintain persistence.

The rule helps detect:

Malicious or fake update.exe execution
Abnormal parent-child process relationship (svchost.exe → update.exe)
Execution from non-standard user directories
Potential malware staging and execution behavior

This detection is intended to identify early-stage malware execution and suspicious process behavior linked to threat actor techniques described in recent threat intelligence reports.
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Kumaresan Selladurai@KumaresanSelladurai
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Detections.ai Community
5 months ago
120168
This rule detects a high frequency (3 or more within an hour) of command-line executions containing keywords like 'antivirus', 'defense', or 'endpoint' on a Windows system. This activity could indicate an adversary attempting to interact with, disable, or tamper with security software to evade detection.
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Ankit Mehta@Secvyn
Bharat Cyber Guardians
5 months ago
001
This rule detects a high frequency (3 or more within an hour) of command-line executions containing keywords like 'antivirus', 'defense', or 'endpoint' on a Windows system. This activity could indicate an adversary attempting to interact with, disable, or tamper with security software to evade detection.
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Ankit Mehta@Secvyn
Bharat Cyber Guardians
5 months ago
001
This rule detects a high frequency (3 or more within an hour) of command-line executions containing keywords like 'antivirus', 'defense', or 'endpoint' on a Windows system. This activity could indicate an adversary attempting to interact with, disable, or tamper with security software to evade detection.
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Ankit Mehta@Secvyn
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Detections.ai Community
5 months ago
001
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