Arnold Chan
@slazTrusted contributorCompletionist
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7,555 detections
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Detects a suspected ClickFix infection sequence associated with Psychedelic Stealer. The rule identifies a user navigating to known malicious lure pages (often mimicking Cloudflare CAPTCHAs) followed shortly by the Windows Run dialog (explorer.exe) initiating msiexec.exe to execute a remote MSI file.
Detects suspicious process execution patterns associated with RMMCRAT, where the Windows SmartScreen process (smartscreen.exe) spawns cmd.exe, which subsequently launches PowerShell with specific parameters for piped input/output. This behavior is characteristic of malicious code injection and command-and-control activity.
Detects malicious Android application installation or launch behavior consistent with the 'Corp MDM' implant. This rule specifically identifies instances where a package named 'com.corp.mdm' is installed or launched and rapidly requests a combination of high-risk permissions including SMS and telephony access (RECEIVE_SMS, READ_SMS, CALL_PHONE) alongside notification permissions, which is characteristic of the implant's initial setup phase.
Detects phishing emails that impersonate Adobe Acrobat Sign or DocuSign using invoice or RFP-themed lures. The rule identifies suspicious emails by checking for brand-related keywords in the subject and display name, identifying links that do not lead to legitimate signing domains, and identifying senders that are impersonating a brand or are newly seen in the environment.
This rule monitors for known malicious indicators, including a specific file hash, a C2 IP address, a remote URL associated with potential malicious activity (anydesk.exe), and a domain associated with C3Pool crypto-mining activity, across device processes, network events, and file operations.
This rule monitors for known malicious indicators, including a specific file hash, a C2 IP address, a remote URL associated with potential malicious activity (anydesk.exe), and a domain associated with C3Pool crypto-mining activity, across device processes, network events, and file operations.
This rule identifies potential infections associated with the MacSync malware family by matching process, file, and network indicators (hashes, malicious domains, and specific payload URLs) against endpoint telemetry. It monitors for execution of known malicious binaries, file creation events, and communication with identified command-and-control infrastructure.
Detects various indicators of compromise (IOCs) including known malicious file hashes, suspicious file names commonly associated with staging or initialization in web directories, and network communication to known malicious domains or URLs. It also monitors process execution command lines for references to these IOCs, excluding common browser processes.
Detects the creation or renaming of files to a .aspx extension within specific web application directories (member file-upload). The rule specifically filters for file operations initiated by the IIS worker process (w3wp.exe) and requires a non-zero file size, identifying potential web shell deployment attempts.
This rule detects an exploitation attempt targeting a memory overflow vulnerability in Citrix NetScaler Gateway, specifically identifying oversized DTLS handshake length fields in UDP traffic. The rule triggers when a DTLS packet exceeds the specified size threshold, which is indicative of a buffer overflow attack intended to cause a service crash (Denial of Service).
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