Arnold Chan
@slazTrusted contributorCompletionist
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7,555 detections
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Detects execution of the MovieReaper initial loader, which employs specific anti-sandboxing and anti-analysis techniques. The detection relies on identified file hashes, as well as heuristic analysis of process filenames containing common media-related keywords in sensitive directories and command line arguments indicating the presence of Global mutexes.
Detects instances where a process named msedge.exe is running from the 'C:\ProgramData\Microsoft\Windows\Telemetry\' directory. This is a common location used by attackers to hide malicious executables by masquerading them as legitimate browser processes, particularly when the process command line includes arguments like 'preview' or 'thumbnail' which are often used to blend in with background system activity.
This rule detects a multi-stage malicious behavior chain: the execution of a suspected loader (identified by hash or specific mutex), followed by network communication to a known C2 domain or IP, and concluded by the placement of a file in the Windows Telemetry folder (typically mimicking msedge.exe). The events are correlated within a short time window (2 hours between each stage) on the same device.
Detects execution artifacts of the MovieReaper stage 2 implant, specifically its capability to parse and load COFF modules into memory without writing them to disk. The rule monitors process command lines for 'module_init' and identifies suspicious API activity related to memory-based module loading, such as reflective DLL loading or remote thread creation.
Detects execution artifacts of the MovieReaper stage 2 implant, specifically its capability to parse and load COFF modules into memory without writing them to disk. The rule monitors process command lines for 'module_init' and identifies suspicious API activity related to memory-based module loading, such as reflective DLL loading or remote thread creation.
Detects process and file creation activity matching known MovieReaper loader and downstream module file hashes (MD5/SHA256). C2 IP/domain network indicators for this campaign require a separate network_connection-category rule, since Sigma logsource categories cannot be mixed within a single rule.
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.
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.
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.
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.
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