Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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Detects HTTP beaconing activity associated with the Kimsuky threat group (Stella_Gary), specifically identifying requests to the /unicorn/ path. This pattern is characteristic of their C2 communication mechanism, which masquerades as legitimate browsing.
Detects HTTP beaconing activity associated with the Kimsuky threat group (Stella_Gary), specifically identifying requests to the /unicorn/ path. This pattern is characteristic of their C2 communication mechanism, which masquerades as legitimate browsing.
Detects established network connections to a known Kimsuky-associated infrastructure (107.172.249.140) on port 443. The rule filters out standard TLS handshakes by inspecting initial packet content, targeting non-standard or custom-protocol traffic, and limits alerts to once per hour per source host to reduce noise.
Detects established network connections to a known Kimsuky-associated infrastructure (107.172.249.140) on port 443. The rule filters out standard TLS handshakes by inspecting initial packet content, targeting non-standard or custom-protocol traffic, and limits alerts to once per hour per source host to reduce noise.
Detects established network connections to a known Kimsuky-associated infrastructure (107.172.249.140) on port 443. The rule filters out standard TLS handshakes by inspecting initial packet content, targeting non-standard or custom-protocol traffic, and limits alerts to once per hour per source host to reduce noise.
Detects HTTP GET requests associated with the Kimsuky threat actor, specifically targeting the retrieval of payloads like uni.txt or files matching the test.bef_fri pattern from the /unicorn/ directory.
Detects HTTP GET requests associated with the Kimsuky threat actor, specifically targeting the retrieval of payloads like uni.txt or files matching the test.bef_fri pattern from the /unicorn/ directory.
Detects HTTP GET requests associated with the Kimsuky threat actor, specifically targeting the retrieval of payloads like uni.txt or files matching the test.bef_fri pattern from the /unicorn/ directory.
Detects outbound WebSocket upgrade requests from internal network assets to known IronToll C2 IP addresses, restricted to requests whose Host header ends in one of the disposable TLDs observed across the campaign's 73+ rotating lookalike domains (.cfd, .sbs, .shop, .icu, .buzz, etc). This narrows the alert to the campaign's actual phishing-domain pattern rather than any WebSocket traffic that happens to reach the same shared Tencent/Alibaba cloud IPs, and a per-source threshold caps repeat alerts from the same host to one per hour.
Detects outbound WebSocket upgrade requests from internal network assets to known IronToll C2 IP addresses, restricted to requests whose Host header ends in one of the disposable TLDs observed across the campaign's 73+ rotating lookalike domains (.cfd, .sbs, .shop, .icu, .buzz, etc). This narrows the alert to the campaign's actual phishing-domain pattern rather than any WebSocket traffic that happens to reach the same shared Tencent/Alibaba cloud IPs, and a per-source threshold caps repeat alerts from the same host to one per hour.
Detects country-coded lure path requests (/eg, /ma) followed by a cloaking differential response (desktop UA blocked with 404, mobile UA served content). Fixed a regex bug where the original pattern matched any path merely starting with 'eg' or 'ma' (e.g. /egg.jpg, /mail, /manifest.json) instead of the exact path segment.
Detects the Iron Man System kit's known template artifact path, and separately its randomized per-deployment admin-panel path shape combined with a Host header on a disposable TLD. Splitting these and requiring the disposable-TLD host on the generic admin-path rule avoids matching legitimate multi-tenant apps or hardened CMS installs that use similar random-path-plus-/admin/ obfuscation on ordinary domains.
Detects the Iron Man System kit's known template artifact path, and separately its randomized per-deployment admin-panel path shape combined with a Host header on a disposable TLD. Splitting these and requiring the disposable-TLD host on the generic admin-path rule avoids matching legitimate multi-tenant apps or hardened CMS installs that use similar random-path-plus-/admin/ obfuscation on ordinary domains.
This rule detects DNS queries for the hardcoded domain 'gsx.uk.com', which is associated with the command-and-control (C2) infrastructure of BabylonRAT malware.
This rule detects DNS queries for the hardcoded domain 'gsx.uk.com', which is associated with the command-and-control (C2) infrastructure of BabylonRAT malware.
This rule detects DNS queries for the hardcoded domain 'gsx.uk.com', which is associated with the command-and-control (C2) infrastructure of BabylonRAT malware.
This rule detects DNS queries for the hardcoded domain 'gsx.uk.com', which is associated with the command-and-control (C2) infrastructure of BabylonRAT malware.
This rule detects network traffic patterns associated with the Koktevrat Android RAT, specifically identifying periodic TLS beacons (heartbeats) destined for known C2 domains (streams-tv.lol and stream-plus.lat). The behavior suggests the use of Android's AlarmManager to schedule recurring callbacks to the C2 infrastructure.
This rule detects network traffic patterns associated with the Koktevrat Android RAT, specifically identifying periodic TLS beacons (heartbeats) destined for known C2 domains (streams-tv.lol and stream-plus.lat). The behavior suggests the use of Android's AlarmManager to schedule recurring callbacks to the C2 infrastructure.
This rule detects outbound TLS connections to suspicious domain names characteristic of the Koktevrat malware's DGA. The rule identifies SNI strings that match a specific regex pattern (8-16 alphanumeric characters followed by .icu or .cfd TLDs), which is indicative of automated C2 communication.
This rule detects outbound TLS connections to suspicious domain names characteristic of the Koktevrat malware's DGA. The rule identifies SNI strings that match a specific regex pattern (8-16 alphanumeric characters followed by .icu or .cfd TLDs), which is indicative of automated C2 communication.
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