Detections

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

2,521 detections

Detects network activity associated with the SilverFox malware, specifically targeting the discovery of relay endpoints via specific URI patterns containing cache-busting timestamps, DNS lookups for identified relay domains (noah-ssh.com.cn) and Cloudflare Workers subdomains, and suspicious HTTP response characteristics such as specific cache headers paired with wildcard CORS headers.
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Ibrahim Saud@tektrix
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Detections.ai Community
1 month ago
002
This rule detects a multi-stage malicious behavior chain: the execution of a suspected loader (identified by hash or specific mutex), followed by network communication to a known C2 domain or IP, and concluded by the placement of a file in the Windows Telemetry folder (typically mimicking msedge.exe). The events are correlated within a short time window (2 hours between each stage) on the same device.
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Arnold Chan@slaz
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Hunters
1 month ago
002
This rule detects a multi-stage malicious behavior chain: the execution of a suspected loader (identified by hash or specific mutex), followed by network communication to a known C2 domain or IP, and concluded by the placement of a file in the Windows Telemetry folder (typically mimicking msedge.exe). The events are correlated within a short time window (2 hours between each stage) on the same device.
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Arnold Chan@slaz
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Midnight Slayer
1 month ago
002
This rule detects a multi-stage malicious behavior chain: the execution of a suspected loader (identified by hash or specific mutex), followed by network communication to a known C2 domain or IP, and concluded by the placement of a file in the Windows Telemetry folder (typically mimicking msedge.exe). The events are correlated within a short time window (2 hours between each stage) on the same device.
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Arnold Chan@slaz
Defender - KQL
1 month ago
002
This rule monitors DeviceNetworkEvents for outbound network connections to a list of known malicious IP addresses associated with various C2 frameworks and malware families, as identified by threat intelligence feeds (e.g., ThreatFox). Identifying these connections helps detect potential C2 communication and ingress tool transfer.
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Ankit Mehta@Secvyn
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Detection & Hunting Community
2 months ago
204
This rule monitors network connections, file events, and process execution command lines for references to a list of known malicious URLs, including indicators associated with ClearFake, IClickFix, AMOS, Remus, and Mozi botnet payloads.
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Ankit Mehta@Secvyn
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Detections.ai Community
2 months ago
304
This rule detects shell processes (sh or bash) being spawned from suspicious, commonly writable directories (e.g., /tmp, /dev/shm) within a short window of file system activity (creation, modification, or deletion) and associated MQTT protocol network communication. This pattern is indicative of potential malware staging or command-and-control activity on Linux systems.
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Ankit Mehta@Secvyn
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Detections.ai Community
2 months ago
304
Detects the Kimsuky APT-C-55 'Stella_Gary' attack chain, where PowerShell is used to download a JavaScript verification script from an external C2 (InfinityFree), followed by the execution of that script via cscript.exe in temporary directories. This behavior is used to bypass anti-bot mechanisms and retrieve secondary payloads from hardcoded C2 infrastructure.
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Arnold Chan@slaz
Defender - KQL
1 month ago
002
Detects HTTP traffic from internal hosts to the 'gapidriver.com' domain, specifically identifying the GapiUpdate stager behavior. The rule looks for authenticated GET requests to '/api/get.php' using a specific Bearer token and User-Agent, as well as status reporting to '/api/rest.php'.
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Arnold Chan@slaz
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Detections.ai Community
2 months ago
104
Detects HTTP requests to known Sality (SALTY SPIDER) payload-hosting
domains distributed as "URL packs" to infected bots. Sality's P2P network tasks bots
with URL packs pointing to compromised or operator-maintained web servers hosting
malware payloads (such as the EggJagger clipjacker) disguised as innocuous image or
document files (.gif, .png, .pdf) on free hosting providers.
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Georg Lauenstein@gsec
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SecOps Signals
2 months ago
2011
This rule detects potential command and control (C2) communication related to the GhostContainer malware. It inspects HTTP POST requests directed at Microsoft Outlook Web Access (OWA) paths containing a suspicious 'x-owa-urlpostdata' header. The presence of this specific header, followed by a base64-encoded string of significant length, indicates an attempt to deliver C2 commands or exfiltrate data through OWA infrastructure.
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Arnold Chan@slaz
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Detection & Hunting Community
2 months ago
003
This rule detects potential command and control (C2) communication related to the GhostContainer malware. It inspects HTTP POST requests directed at Microsoft Outlook Web Access (OWA) paths containing a suspicious 'x-owa-urlpostdata' header. The presence of this specific header, followed by a base64-encoded string of significant length, indicates an attempt to deliver C2 commands or exfiltrate data through OWA infrastructure.
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Arnold Chan@slaz
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Detections.ai Community
2 months ago
003
This rule monitors for interactions with known malicious files (by SHA256 hash), connections to confirmed C2 infrastructure (specific IP address and domains), or requests to known malicious URLs. It aggregates indicators across file, process, network, and web browsing telemetry to identify potential threats or compromised systems communicating with known attacker infrastructure.
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Arnold Chan@slaz
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Hunters
1 month ago
000
This rule monitors for interactions with known malicious files (by SHA256 hash), connections to confirmed C2 infrastructure (specific IP address and domains), or requests to known malicious URLs. It aggregates indicators across file, process, network, and web browsing telemetry to identify potential threats or compromised systems communicating with known attacker infrastructure.
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Arnold Chan@slaz
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Detection & Hunting Community
1 month ago
000
This rule monitors for interactions with known malicious files (by SHA256 hash), connections to confirmed C2 infrastructure (specific IP address and domains), or requests to known malicious URLs. It aggregates indicators across file, process, network, and web browsing telemetry to identify potential threats or compromised systems communicating with known attacker infrastructure.
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Arnold Chan@slaz
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Midnight Slayer
1 month ago
000
Detects the execution of curl.exe by various script interpreters (cmd.exe, powershell.exe, wscript.exe, mshta.exe) or Windows Explorer. This pattern is commonly used by adversaries to download malicious payloads or intermediate loaders as part of an attack chain, such as deploying CastleLoader/CastleRAT.
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Ibrahim Saud@tektrix
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Detections.ai Community
1 month ago
001
Detects instances of ImageMagick binaries (convert, identify, magick) spawning suspicious child processes (e.g., shells, network tools, scripting interpreters) when processing image files with HEIF/HEIC extensions. This is a common pattern for exploiting image processing vulnerabilities (e.g., ImageTragick) to achieve remote code execution.
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Arnold Chan@slaz
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Detection & Hunting Community
1 month ago
001
Detects instances of ImageMagick binaries (convert, identify, magick) spawning suspicious child processes (e.g., shells, network tools, scripting interpreters) when processing image files with HEIF/HEIC extensions. This is a common pattern for exploiting image processing vulnerabilities (e.g., ImageTragick) to achieve remote code execution.
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Arnold Chan@slaz
Defender - KQL
1 month ago
001
Detects instances of ImageMagick binaries (convert, identify, magick) spawning suspicious child processes (e.g., shells, network tools, scripting interpreters) when processing image files with HEIF/HEIC extensions. This is a common pattern for exploiting image processing vulnerabilities (e.g., ImageTragick) to achieve remote code execution.
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Arnold Chan@slaz
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Hunters
1 month ago
001
Detects instances of ImageMagick binaries (convert, identify, magick) spawning suspicious child processes (e.g., shells, network tools, scripting interpreters) when processing image files with HEIF/HEIC extensions. This is a common pattern for exploiting image processing vulnerabilities (e.g., ImageTragick) to achieve remote code execution.
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Arnold Chan@slaz
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Midnight Slayer
1 month ago
001
Detects the execution of processes related to the 'Toy Ghouls' bird-agent tool delivery, utilizing Evil-WinRM or WinRM-fs to execute commands remotely via the WinRM service (wsmprovhost.exe).
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Ibrahim Saud@tektrix
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Detections.ai Community
1 month ago
002
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