Ibrahim Saud
@tektrixIndiaCompletionist
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11,679 detections
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Detects the execution of PowerShell commands using 'Add-MpPreference -ExclusionPath' initiated by the CRUDEEXCLUDE Delphi utility. This behavior is associated with threat actors staging directories for the deployment of HEAVYGRAM/SHADEGENES payloads.
Detects the execution of known malicious loader files associated with the MovieReaper campaign. The rule identifies processes based on specific MD5 hashes, or by detecting obfuscated naming conventions where an executable file is disguised as a movie file by appending excessive padding or specific descriptors to the filename, often used to bypass user suspicion when distributed via torrent repositories.
Detects a suspicious sequence of PowerShell commands associated with HEAVYGRAM-related droppers. The rule identifies processes that attempt to bypass security protections by adding Windows Defender exclusion paths, followed by registry-based persistence mechanisms (Run keys) that target common malicious executables such as RuntimeSSH.exe or winappx.exe.
Detects a suspicious execution chain where wscript.exe spawns an encoded PowerShell process to download files from Vultr Object Storage. The rule specifically monitors for the download of decoy files (e.g., .pptx, .zip) followed by the execution of a file named RuntimeSSH.exe, which is associated with the HEAVYGRAM malware implant.
Detects the initialization of COFF object files within a process memory context, characteristic of the MovieReaper stage-2 implant. This rule identifies the invocation of a 'module_init' exported function, which serves as a common mechanism for executing Beacon Object Files (BOF) or similar in-memory command loading interfaces.
Detects the creation of a scheduled task using 'schtasks.exe' configured to run as the SYSTEM account for a one-time execution. This behavior is often associated with persistence mechanisms or privilege escalation attempts where an adversary seeks to execute malicious code in a high-privileged context.
Detects the usage of s5cmd, a command-line tool for S3, to communicate with AWS S3 endpoints. This behavior is indicative of potential data exfiltration by an adversary using authorized cloud storage tools to move data out of the environment.
Detects unauthorized modification of the registry path 'HKCU\Software\Classes\ms-settings\Shell\Open\command'. This registry key is commonly hijacked by the 'fodhelper.exe' UAC bypass technique, where an attacker writes a malicious command to be executed with elevated privileges when the OS triggers the ms-settings protocol handler.
Detects modifications to the Windows RunMRU registry key that include suspicious strings such as 'powershell', 'curl', or long base64-encoded sequences. This behavior is indicative of the 'ClickFix' technique, where users are socially engineered to paste and execute malicious commands directly into the Windows Run dialog.
Detects attempts by PowerShell processes to modify the memory space of amsi.dll, a common technique used to bypass the Antimalware Scan Interface (AMSI) by patching its functions in-memory.
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