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Arnold Chan

@slaz
Trusted contributorCompletionist
2 followers2,100 downloads4,388 copies51 likes26,186 views

7,555 detections

Detects suspicious process execution patterns originating from Langflow or Nacos AI orchestration services, including the spawning of sensitive binaries like cmd, powershell, or scripts (python/bash/sh) with suspicious command-line arguments. Additionally, it identifies potential exploitation attempts targeting known-vulnerable API endpoints (code validation and Nacos user authentication).
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Arnold Chan@slaz
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Midnight Slayer
2 months ago
004
Detects rapid, non-interactive ransomware-like behavior characterized by system reconnaissance followed by automated bulk file deletion of model/data files (e.g., .ckpt, .pt). The rule identifies campaigns where discovery, lateral movement or automated execution, and destructive impact occur within a 3-hour window without any interactive user login evidence.
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Arnold Chan@slaz
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Hunters
2 months ago
204
Detects rapid, non-interactive ransomware-like behavior characterized by system reconnaissance followed by automated bulk file deletion of model/data files (e.g., .ckpt, .pt). The rule identifies campaigns where discovery, lateral movement or automated execution, and destructive impact occur within a 3-hour window without any interactive user login evidence.
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Arnold Chan@slaz
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Midnight Slayer
2 months ago
004
Detects suspicious activity related to the Windows Subsystem for Linux (WSL), such as installing new distributions (especially penetration testing ones like Kali), importing custom images, or executing commands non-interactively. Attackers may use WSL to run malicious Linux binaries, hide artifacts, and evade defenses.
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Arnold Chan@slaz
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Hunters
2 months ago
209
Detects an attempt to exploit CVE-2026-24858 in FortiCloud SSO by sending a crafted SAML authentication request that lacks a signature. This vulnerability allows an attacker to bypass authentication by providing an unsigned SAML response.
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Arnold Chan@slaz
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Detections.ai Community
2 months ago
004
Detects the creation of specific Object Manager namespace directories and objects used by the ShieldCrash proof-of-concept (CVE-2026-69414) to hijack the Microsoft Defender scan process.
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Arnold Chan@slaz
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Hunters
2 months ago
309
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
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Hunters
2 months ago
509
Detects msiexec.exe executing from the Temp directory with suspicious command-line arguments (such as hidden windows) and spawning child processes like cmd.exe, tasklist.exe, or taskkill.exe. This behavior is often indicative of malicious installation scripts attempting to perform discovery or terminate security processes while remaining stealthy.
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Arnold Chan@slaz
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Hunters
2 months ago
009
Detects high-volume authentication attempts against Fortinet network appliances where multiple distinct source IPs successfully authenticate against multiple distinct accounts matching specific administrative naming patterns. This pattern is indicative of potential credential stuffing or brute-force campaigns targeting edge infrastructure.
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Arnold Chan@slaz
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Detections.ai Community
2 months ago
104
Detects successful device code authentication flows involving applications that are not part of a known list of standard Microsoft and Azure client applications. Device code flows are frequently abused in phishing attacks to bypass traditional credential-based authentication.
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Arnold Chan@slaz
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Midnight Slayer
2 months ago
103
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