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LOKI2

LOKI - Simple IOC and YARA Scanner

Status

Work in Progress. This version is not ready for use. There's still some work to do for a first release.

What's already implemented

• System reconnaissance (system and hardware information for the log)
• Logging and formatting of the different log outputs
• File system walk
• File time evaluation (MAC timestamps)
• Exclusions based on file characteristics
• IOC initialization - hash values
• IOC matching on files (hashes)
• YARA rule initialization, syntax checks, and error handling
• YARA scanning of files
• YARA scanning of process memory

What's still to do

• IOC initialization - file patterns
• IOC initialization - C2 patterns (FQDN, IP)
• IOC matching on files (file patterns)
• C2 IOC matching (process connections)
• File system walk exceptions: network drivers, mounted drives etc.
• Custom exclusions (regex on file path)
• Release workflows (automatically build and provide as release)

Setup Build Environment

Requirements

See the files in the folder .github/workflows for steps to setup a build environment for

• Linux
• macOS

Providing Signatures

git clone https://github.com/Neo23x0/signature-base ../signature-base/
ln -s ../signature-base/ ./signatures

Build

cargo build

Test Run

cargo build && ./target/debug/loki --help

Usage

Usage: loki [OPTIONS]

LOKI YARA and IOC Scanner

Options:
  -m, --max-file-size         Maximum file size to scan (default: 10000000)
  -s, --show-access-errors    Show all file and process access errors
  -c, --scan-all-files        Scan all files regardless of their file type / extension
  -d, --debug                 Show debugging information
  -t, --trace                 Show very verbose trace output
  -n, --noprocs               Don't scan processes
  -o, --nofs                  Don't scan the file system
  -f, --folder                Folder to scan
  -h, --help                  Show this help message.

Screenshots

LOKI 2 alpha version