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Arnold Chan

@slaz
Trusted contributorCompletionist
2 followers2,100 downloads4,386 copies51 likes26,184 views

7,555 detections

This rule detects network connections from internal devices to known SpiceRAT Command and Control (C2) infrastructure IPs. The detection filters for successful connections on common ports (80, 443) that meet a volume threshold, indicating potential ongoing beaconing or communication with malicious infrastructure.
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Arnold Chan@slaz
Defender - KQL
2 months ago
002
Detects outbound network connections from devices to specific suspicious domains identified in the detection logic. This rule monitors for connections to 'ns2.asiainfo.it.com' and 'www.wordcheck.info', which may be indicative of malware communication, command and control, or malicious web activity.
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Arnold Chan@slaz
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Detections.ai Community
2 months ago
002
Detects EDRKiller.exe or WarsawKiller.exe binaries and the associated wsftprm.sys BYOVD driver used by The Gentlemen threat actor to terminate security product processes
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Arnold Chan@slaz
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Hunters
1 month ago
001
Detects EDRKiller.exe or WarsawKiller.exe binaries and the associated wsftprm.sys BYOVD driver used by The Gentlemen threat actor to terminate security product processes
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Arnold Chan@slaz
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Detection & Hunting Community
1 month ago
001
This rule detects the execution, file presence, or driver loading associated with 'EDRKiller' and 'WarsawKiller', which are malicious tools used to terminate or disable endpoint security products.
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Arnold Chan@slaz
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Hunters
1 month ago
001
This rule detects network connections or process command lines associated with known malicious domains, IP addresses, or payload URLs. Additionally, it correlates connections to common public file-sharing platforms or APIs (e.g., Gofile, Telegram) if these events occur on the same device within a 60-minute window of a confirmed malicious infrastructure event, reducing false positives from legitimate uses of shared infrastructure.
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Arnold Chan@slaz
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SlimKQL
2 months ago
8014
This rule monitors for network connections to known command-and-control (C2) IP addresses and the execution or presence of files matching known hashes associated with the 'PhantomC2' threat group or malware family. It correlates data from DeviceNetworkEvents, DeviceFileEvents, and DeviceProcessEvents to identify potential compromise.
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Arnold Chan@slaz
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Hunters
2 months ago
508
Detects the execution of base64 encoded PowerShell commands initiated by conhost.exe with the --headless flag. The decoded command contains specific suspicious patterns, including accessing environment variables, reading file content, and deleting files, which is characteristic of malicious scripts attempting to stealthily interact with the environment.
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Arnold Chan@slaz
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Hunters
2 months ago
002
Detects in-memory tampering of the EtwEventWrite function within ntdll.dll, a technique commonly used by malware and loaders to disable Event Tracing for Windows (ETW) telemetry to avoid detection by security products.
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Arnold Chan@slaz
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Hunters
2 months ago
002
Detects inbound emails containing an '.r01' attachment (often associated with multi-part RAR archives) where both SPF and DMARC authentication checks have failed, and the email subject implies business-related themes like purchase orders or supply chain communication. This pattern is indicative of a spearphishing attempt.
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Arnold Chan@slaz
Defender - KQL
2 months ago
102
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