CobaltStrikeScan

Scan files or process memory for Cobalt Strike beacons and parse their configuration.

CobaltStrikeScan scans Windows process memory for evidence of DLL injection (classic or reflective injection) and/or performs a YARA scan on the target process' memory for Cobalt Strike v3 and v4 beacon signatures.

Alternatively, CobaltStrikeScan can perform the same YARA scan on a file supplied by absolute or relative path as a command-line argument.

If a Cobalt Strike beacon is detected in the file or process, the beacon's configuration will be parsed and displayed to the console.

Cloning This Repo

CobaltStrikeScan contains GetInjectedThreads as a submodule. Ensure you use git clone --recursive https://github.com/Apr4h/CobaltStrikeScan.git when cloning CobaltStrikeScan so that the submodule's code is also downloaded/cloned.

Building the Solution

Costura.Fody is configured to embed CommandLine.dll and libyara.NET.dll in the compiled CobaltStrikeScan.exe assembly. CobaltStrikeScan.exe should then serve as a static, portable version of CobaltStrikeScan. For this to occur, ensure that the "Active Solution Platform" is set to x64 when building.

Acknowledgements

This project is inspired by the following research / articles:

• SpecterOps - Defenders Think in Graphs Too
• JPCert - Volatility Plugin for Detecting Cobalt Strike
• SentinelLabs - The Anatomy of an APT Attack and CobaltStrike Beacon’s Encoded Configuration
• Neo23x0's Signature Base for high-quality YARA signatures used to detect Cobalt Strike's encoded configuration block.

Requirements

• 64-bit Windows OS
• .NET Framework 4.6
• Administrator or SeDebugPrivilege is required to scan process memory for injected threads

Usage

  -d, --directory-scan          Scan all process/memory dump files in a directory for Cobalt Strike beacons

  -f, --scan-file               Scan a process/memory dump for Cobalt Strike beacons

  -i, --injected-threads        Scan running (64-bit) processes for injected threads and Cobalt Strike beacons

  -p, --scan-processes          Scan running processes for Cobalt Strike beacons

  -v, --verbose                 Write verbose output

  -w, --write-process-memory    Write process memory to file when injected threads are detected

  -h, --help                    Display Help Message

  --help                        Display this help screen.

  --version                     Display version information.

Example