Arnold Chan
@slazTrusted contributorCompletionist
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Detects bulk filesystem operations (create, copy, rename, move, delete) performed by the masqueraded process 'msedge.exe' located in 'C:\ProgramData\Microsoft\Windows\Telemetry\', indicative of the MovieReaper 'file manager' module performing mass file manipulation.
This rule detects the creation of specific system mutexes commonly used by malware for persistence or to avoid multiple infections (Mutual Exclusion). It monitors for both a specific hardcoded mutex and a pattern-based approach (15-20 alphanumeric characters) initiated by executables from common temporary or user-writable directories, which is a frequent indicator of malicious secondary payloads or droppers.
This rule detects the creation of specific system mutexes commonly used by malware for persistence or to avoid multiple infections (Mutual Exclusion). It monitors for both a specific hardcoded mutex and a pattern-based approach (15-20 alphanumeric characters) initiated by executables from common temporary or user-writable directories, which is a frequent indicator of malicious secondary payloads or droppers.
This rule detects the creation of specific system mutexes commonly used by malware for persistence or to avoid multiple infections (Mutual Exclusion). It monitors for both a specific hardcoded mutex and a pattern-based approach (15-20 alphanumeric characters) initiated by executables from common temporary or user-writable directories, which is a frequent indicator of malicious secondary payloads or droppers.
This rule monitors for processes named 'msedge.exe' executing from the 'C:\ProgramData\Microsoft\Windows\Telemetry\' directory. The rule filters out legitimate Edge update processes and common browser command-line arguments to isolate potentially malicious masquerading attempts by identifying binaries that share the name of a legitimate application but reside in unexpected, often non-standard locations.
Detects evidence of the MovieReaper loader technique. This behavior involves registering or rewriting Vectored Exception Handlers, allocating memory with EXECUTE_READWRITE protection, and triggering debug-break exceptions to redirect execution into raw NtProtectVirtualMemory syscalls, effectively bypassing user-mode API hooks often used for monitoring.
Detects activity associated with the 'MovieReaper' threat campaign by identifying known malicious file hashes, command and control (C2) IP addresses, and communication with identified malicious domains. This rule monitors process execution, file operations, and network connections within the campaign's active timeframe.
This rule detects high-volume email bursts sent through third-party bulk email providers where the sender domain exhibits SPF, DKIM, or DMARC alignment failures. This behavior is indicative of mass phishing campaigns, such as those associated with 'Operation DoppelBrand', attempting to bypass email authentication defenses using compromised or unauthorized infrastructure.
Detects unauthorized attempts to manipulate cgroup files (e.g., cgroup.procs) within Kubernetes pods using kubectl exec/attach sessions. This technique is often associated with SPIRE attestation spoofing or container escape attempts where an attacker attempts to influence process management or isolation constraints from within the container via the Kubernetes API.
Detects high-volume deletion or recycling of files within OneDrive or SharePoint for a specific user, which may indicate malicious activity such as data destruction, ransomware, or unauthorized data exfiltration staging.
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