Detections

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

4,230 detections

Detects outbound HTTP requests to known Kimsuky command and control (C2) infrastructure associated with the Stella_Gary campaign. The rule monitors for specific URI patterns ('/unicorn/mort.php' or '/unicorn/uni.txt') commonly used by this threat actor for beaconing.
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Arnold Chan@slaz
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Detections.ai Community
1 month ago
103
Detects network activity and HTTP traffic associated with the Iron Man System kit, specifically targeting hardcoded C2 infrastructure (IP-based) and lure domain patterns involving specific brand tokens combined with disposable TLDs.
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Arnold Chan@slaz
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Detection & Hunting Community
2 months ago
208
Detects high-volume POST requests containing HEIF, HEIC, or AVIF image content types, indicative of automated fuzzing or exploitation attempts against an image-processing endpoint targeting CVE-2026-32882.
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Arnold Chan@slaz
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Detection & Hunting Community
1 month ago
002
Detects high-volume POST requests containing HEIF, HEIC, or AVIF image content types, indicative of automated fuzzing or exploitation attempts against an image-processing endpoint targeting CVE-2026-32882.
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Arnold Chan@slaz
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Midnight Slayer
1 month ago
002
Detects high-volume POST requests containing HEIF, HEIC, or AVIF image content types, indicative of automated fuzzing or exploitation attempts against an image-processing endpoint targeting CVE-2026-32882.
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Arnold Chan@slaz
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Hunters
1 month ago
002
Detects network activity associated with the SilverFox multi-tier relay infrastructure, specifically identifying HTTP requests to known relay domains and dispatcher endpoints used for command-and-control (C2) communication.
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Ibrahim Saud@tektrix
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Detections.ai Community
1 month ago
103
Detects DNS queries, HTTP host headers, and TLS SNI traffic associated with the SilverFox relay and dispatch infrastructure. These indicators are commonly used by the SilverFox malware for command and control (C2) communications.
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Ibrahim Saud@tektrix
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Detections.ai Community
1 month ago
003
Detects successful POST requests to the WordPress admin-ajax.php endpoint utilizing the 'wwlc_file_upload_handler' action with an empty referrer header. This pattern is characteristic of attackers attempting to upload malicious files via vulnerable WordPress plugins to establish web shell persistence.
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Arnold Chan@slaz
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Midnight Slayer
2 months ago
005
Detects successful POST requests to the WordPress admin-ajax.php endpoint utilizing the 'wwlc_file_upload_handler' action with an empty referrer header. This pattern is characteristic of attackers attempting to upload malicious files via vulnerable WordPress plugins to establish web shell persistence.
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Arnold Chan@slaz
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Hunters
2 months ago
005
This rule detects suspicious outbound HTTP GET requests to a known domain (noah-ssh.com.cn) targeted by the SilverFox malware relay dispatcher. It specifically monitors for requests to '/api.php' containing a 13-digit numeric timestamp parameter, which is a characteristic pattern of its C2 communication.
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Ibrahim Saud@tektrix
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Detections.ai Community
1 month ago
103
Detects outbound network communication attempts by the SilverFox malware to known Cloudflare Workers relay infrastructure, specifically targeting hostnames associated with 'noah-relay' instances. The rule monitors DNS lookups, TLS SNI headers, and HTTP Host headers to identify potential Command and Control (C2) traffic.
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Ibrahim Saud@tektrix
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Detections.ai Community
1 month ago
103
Detects communication between a host and a suspected malicious domain (noah-ssh.com.cn) characterized by a specific API request containing a millisecond timestamp and a subsequent HTTP response containing a 'download_link' field. This pattern is indicative of the SilverFox malware relay mechanism, likely used for staging and downloading additional malicious payloads.
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Ibrahim Saud@tektrix
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Detections.ai Community
1 month ago
103
This rule detects outgoing HTTP POST requests to the public BSC testnet RPC endpoint ('bsc-testnet-rpc.publicnode.com') containing an 'eth_call' request, which is a technique used by the 'EtherHiding' campaign to fetch malicious JavaScript payloads directly from blockchain smart contracts, bypassing traditional web-based C2 infrastructure.
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Ibrahim Saud@tektrix
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Detections.ai Community
1 month ago
001
This rule monitors network traffic, DNS queries, and user web clicks to detect interactions with known malicious domains associated with credential harvesting and phishing campaigns, specifically those impersonating security or SSO portals.
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Arnold Chan@slaz
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Detection & Hunting Community
2 months ago
12025
Detects network traffic indicative of an adversary using the Ethereum blockchain as a dead-drop C2 channel. The rules identify specific JSON-RPC methods (eth_getTransactionByHash, eth_call) typically associated with querying blockchain data for C2 instructions, as well as non-browser processes initiating these requests to external endpoints.
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Ibrahim Saud@tektrix
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Detections.ai Community
1 month ago
001
Detects unauthenticated HTTP POST requests targeting the FortiGate administrative API (/api/v2/), which may indicate exploitation attempts related to CVE-2025-25249. The rule specifically looks for requests lacking authentication headers (Cookie or Authorization).
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Arnold Chan@slaz
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Detections.ai Community
2 months ago
006
Detects outbound HTTP requests to the Telegram Bot API containing hardcoded bot tokens and chat IDs associated with the malicious 'indexed-btree' npm package campaign. This indicates active data exfiltration or command-and-control communication.
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Ibrahim Saud@tektrix
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Detections.ai Community
1 month ago
001
Detects HTTP requests directed at the 'noah-ssh.com.cn' domain targeting '/api.php' with a specific 13-digit millisecond timestamp pattern. This behavior is indicative of a relay or dispatcher mechanism associated with SilverFox SEO poisoning campaigns, used to manage or redirect traffic.
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Ibrahim Saud@tektrix
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Detections.ai Community
1 month ago
103
This rule detects HTTP requests to the Microsoft device login endpoint (/devicelogin) that originate from a non-Microsoft referrer domain. This behavior is highly indicative of Adversary-in-the-Middle (AiTM) phishing attacks targeting OAuth device code flows, where a malicious proxy site redirects users to the legitimate Microsoft login page while attempting to capture session tokens.
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Ibrahim Saud@tektrix
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Detections.ai Community
1 month ago
003
Detects suspicious network traffic to Ethereum Sepolia testnet RPC endpoints (Alchemy and Infura) indicative of the 'indexed-btree' malware campaign. The rule monitors for characteristic C2 polling patterns, specifically requests involving malicious contract addresses and specific RPC methods (eth_call, eth_getStorageAt) associated with this activity.
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Ibrahim Saud@tektrix
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Detections.ai Community
1 month ago
001
Detects network traffic associated with the malicious npm package 'indexed-btree', which uses the Telegram Bot API to exfiltrate data. The rules monitor for connections to api.telegram.org via HTTPS and identify specific hardcoded bot tokens and chat IDs associated with the malicious campaign.
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Ibrahim Saud@tektrix
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Detections.ai Community
1 month ago
001
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