Detections

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

2,918 detections

This rule detects either the presence of known malicious image files (based on SHA256 hashes) on a device or network connection attempts to known malicious URLs hosting such files. This pattern is commonly associated with steganographic techniques used to hide malicious payloads within image files for C2 or delivery.
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Ankit Mehta@Secvyn
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Detections.ai Community
2 months ago
001
This rule monitors for process execution and file activity associated with a specific file hash known to be malicious. By tracking both process and file events using a SHA256 identifier, it captures when a specific threat artifact is executed or interacted with on a system.
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Ankit Mehta@Secvyn
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Detections.ai Community
2 months ago
001
This rule detects the presence or execution of a specific CAB file identified by its SHA256 hash. It monitors both file creation/access events and process execution events involving this hash, indicating potential malicious activity involving a known malicious cabinet file.
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Ankit Mehta@Secvyn
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Detections.ai Community
2 months ago
001
Detects execution or file presence of known malicious files based on a pre-defined list of SHA256 hashes associated with known threat activity.
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Ankit Mehta@Secvyn
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Detections.ai Community
2 months ago
001
Detects anomalous execution or network activity involving a 'content.js' file in conjunction with specific proxy-related artifacts or authorization headers. This pattern is indicative of a malicious browser extension or script attempting to intercept or proxy web traffic and credentials.
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Ankit Mehta@Secvyn
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Detections.ai Community
2 months ago
002
This rule detects either the execution of specific files identified by SHA256 hashes or the installation/enabling of browser extensions matching known malicious extension IDs. This monitoring helps identify the introduction of potentially harmful browser-based persistent threats or the presence of known malicious binaries on endpoints.
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Ankit Mehta@Secvyn
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Detections.ai Community
2 months ago
102
Detects the presence of known file hashes associated with Vectra Remote Access Trojan (RAT). The rule monitors both file creation/existence events and process execution events where the SHA256 hash matches the identified indicators of compromise.
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Arnold Chan@slaz
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Hunters
2 months ago
002
Detects the presence of known file hashes associated with Vectra Remote Access Trojan (RAT). The rule monitors both file creation/existence events and process execution events where the SHA256 hash matches the identified indicators of compromise.
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Arnold Chan@slaz
Defender - KQL
2 months ago
102
Detects the suspicious registration of a Cloud Filter provider callback using staging paths and naming conventions associated with the ShieldCrash (CVE-2026-69414) exploit. The rule monitors DeviceEvents for cloud provider activity that originates from unsigned or untrusted binaries, excluding known-legitimate cloud synchronization clients.
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Arnold Chan@slaz
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Detections.ai Community
2 months ago
404
Detects Adobe Acrobat (Acrobat.exe) launched by a suspicious parent process (GRrte.exe) while opening a specific PDF document from the user's temporary directory. This pattern is indicative of a potential malicious document lure often associated with malware delivery.
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Kaung Khant Ko@kaungkhantko
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Detections.ai Community
1 month ago
000
Detects usage of the 'gem' command (install, build, push, publish) that includes naming patterns or specific command strings associated with the GemStuffer supply chain compromise campaign. This targets attempts to introduce malicious dependencies into the environment using RubyGems.
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Ankit Mehta@Secvyn
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Detections.ai Community
2 months ago
001
This rule detects file creation or modification events within the WordPress plugin directory for 'admin-menu-editor-pro'. Given that WordPress plugins are frequent targets for web shell placement, this rule monitors for unauthorized changes to the plugin's file structure, which may indicate an attempt to gain persistence or remote code execution on the web server.
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Ibrahim Saud@tektrix
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Detections.ai Community
2 months ago
001
Detects file-related operations (creation, modification, renaming, or deletion) performed on files containing 'acronis' or 'backup' in their path, executed by a process associated with Acronis, running under highly privileged system contexts (root or SYSTEM). This activity is indicative of potential unauthorized manipulation or disabling of backup software, commonly seen in ransomware attacks to inhibit recovery.
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Ibrahim Saud@tektrix
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Detections.ai Community
2 months ago
001
Detects obfuscated PHP web shell activity within the Admin Menu Editor Pro plugin, specifically looking for common obfuscation patterns like base64_decode, gzinflate, and str_rot13 combined with encoded payloads.
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Ibrahim Saud@tektrix
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Detections.ai Community
2 months ago
101
This rule detects the creation of files within the '\Users\Public\' directory that follow a specific, suspicious dynamic naming pattern: 'DeviceName@4AccountName'. Attackers often use the Public directory for staging malicious tools or payloads. This naming convention, which includes both the hostname and the executing account name, is highly indicative of automated, malicious activity or custom staging scripts.
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Ankit Mehta@Secvyn
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Detections.ai Community
2 months ago
002
This rule detects potential attempts to tamper with or bypass Windows Defender by monitoring for files or processes named 'ShieldCrash' occurring in close temporal proximity to the creation or modification of files within Windows Defender's shadow or scan directories (BaseNamedObjects\Restricted\WD_SHADOW_ or WD_SCAN). This behavior is often associated with malware attempting to evade security detection.
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Arnold Chan@slaz
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Detection & Hunting Community
2 months ago
508
Detects rapid deletion and creation cycles of the WD_SCAN object manager link, a behavioral pattern associated with a Time-of-Check-to-Time-of-Use (TOCTOU) exploit chain targeting Windows Defender (referenced as CVE-2026-69414). The rule monitors for at least three cycle events occurring within a 5-second window, specifically involving the 'WD_SCAN' object identifier.
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Arnold Chan@slaz
Defender - KQL
2 months ago
108
This rule detects the execution of a process named 'WhatssApp.exe' from a non-standard location ('C:\ProgramData\Drivers\Whatsapp\'), which is indicative of masquerading. It further correlates this activity with the prior termination of the legitimate 'whatsapp.exe' process within a 30-minute window, a pattern often associated with 'WhatsappCheker' or similar malicious tools designed to hijack legitimate application sessions.
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Arnold Chan@slaz
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Midnight Slayer
2 months ago
001
This rule detects the execution of a process named 'WhatssApp.exe' from a non-standard location ('C:\ProgramData\Drivers\Whatsapp\'), which is indicative of masquerading. It further correlates this activity with the prior termination of the legitimate 'whatsapp.exe' process within a 30-minute window, a pattern often associated with 'WhatsappCheker' or similar malicious tools designed to hijack legitimate application sessions.
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Arnold Chan@slaz
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Hunters
2 months ago
001
Detects host-based activity or network communication associated with the SloppyRAT remote access trojan. The rule monitors for specific malicious file hashes and connection attempts to known C2 IP addresses and domains.
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Arnold Chan@slaz
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Detections.ai Community
1 month ago
000
Detects file hash hits matching known malicious IOCs or network connections to suspicious domains/URLs.
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Arnold Chan@slaz
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Hunters
1 month ago
000
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