Arnold Chan
@slazTrusted contributorCompletionist
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7,555 detections
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Detects the creation of multiple suspicious scheduled tasks using schtasks.exe initiated by scripting engines (wscript.exe, cscript.exe). The rule filters for specific task names associated with known malicious patterns and XML definition files located in a specific directory path, identifying potential automated persistence or malware installation behavior.
Sweeps DeviceFileEvents, DeviceProcessEvents, and DeviceNetworkEvents over a rolling 30-day window for known RevStealer indicators: exact SHA-256 matches against all 13 published file hashes, and exact-host matches (via parsed URL host, not substring) against the confirmed C2 domain meta7.archscreen68.one. An empty, extensible IP list is included for when a malicious IP is published.
Detects creation of the 'keyroll' scheduled task used to relaunch the Sauron Loader DLL side-loading chain. Requires the schtasks.exe command line to both reference the 'keyroll' task name AND explicitly reference the ProgramData\keyroll path or rnpkeys.exe (ruling out unrelated tasks that happen to be named 'keyroll', e.g. legitimate key-rotation automation), and requires an INNER join corroborating an actual rnpkeys.exe relaunch from that path within 24h — a lone task-creation event with no follow-on relaunch no longer alerts.
Detects creation of the 'keyroll' scheduled task used to relaunch the Sauron Loader DLL side-loading chain. Requires the schtasks.exe command line to both reference the 'keyroll' task name AND explicitly reference the ProgramData\keyroll path or rnpkeys.exe (ruling out unrelated tasks that happen to be named 'keyroll', e.g. legitimate key-rotation automation), and requires an INNER join corroborating an actual rnpkeys.exe relaunch from that path within 24h — a lone task-creation event with no follow-on relaunch no longer alerts.
Detects exploitation attempts by the CARBONATO botnet targeting exposed Docker daemons. The rule monitors for container escape techniques using 'nsenter' to access host namespaces, the execution of specific malicious entrypoint scripts, the use of known malicious container image references, and the creation of privileged containers with host bind mounts, which are indicative of host filesystem and network compromise.
Detects various persistence mechanisms used by the CARBONATO botnet on Linux systems, including registration of cron jobs, systemd services/timers, and the usage of 'chattr +i' to make persistence files immutable.
Detects known file hashes associated with SideCopy/ReverseRAT.
Detects known file hashes associated with SideCopy/ReverseRAT.
This rule monitors for indicators of compromise (IOCs) associated with the threat actor SideCopy and their associated malware, such as ReverseRAT. It hunts for specific malicious SHA256 file/process hashes, connections to known malicious C2 infrastructure (IPs and domains), requests to known malicious URLs, and user interaction with these URLs via email clicks.
Detects anomalous sign-in patterns indicative of real-time MFA relay attacks, where a user principal authenticates successfully from multiple distinct IP addresses and geographical locations within a short time window (15 minutes), suggesting the active interception of credentials and MFA challenges by a Phishing-as-a-Service platform.
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