Generate YARA rules from latest Microsoft Defender AV Signature #10811
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| name: Generate YARA rules from latest Microsoft Defender AV Signature | |
| on: | |
| schedule: | |
| - cron: "0,30 * * * *" # every 30 minutes | |
| push: | |
| branches: | |
| - main | |
| jobs: | |
| update-rules: | |
| runs-on: ubuntu-latest | |
| steps: | |
| - uses: actions/checkout@v4 | |
| - name: Install exiftool | |
| run: | | |
| sudo apt-get update | |
| sudo apt-get install -y exiftool | |
| - name: Set up python | |
| uses: actions/setup-python@v5 | |
| with: | |
| python-version: '3.12' | |
| - name: Load cached Poetry installation | |
| id: cached-poetry | |
| uses: actions/cache@v4 | |
| with: | |
| path: ~/.local | |
| key: poetry-0 | |
| - name: Install Poetry | |
| if: steps.cached-poetry.outputs.cache-hit != 'true' | |
| uses: snok/install-poetry@v1 | |
| - name: Install Python package dependencies | |
| run: | | |
| poetry install | |
| - name: Get latest signature version | |
| run: | | |
| echo "SIG_VERSION=$(poetry run python -m defender2yara --latest_signature_version)" >> $GITHUB_ENV | |
| - name: Check if SIG_VERSION is empty and fail if true | |
| run: | | |
| if [ -z "$SIG_VERSION" ]; then | |
| echo "SIG_VERSION is empty, failing the job." | |
| exit 1 | |
| else | |
| echo "SIG_VERSION is not empty, continuing." | |
| fi | |
| - name: Load cached vdm files | |
| id: cached-vdm | |
| uses: actions/cache@v4 | |
| with: | |
| path: ./cache | |
| key: vdm-${{ env.SIG_VERSION }} | |
| - name: Generate YARA rules | |
| if: steps.cached-vdm.outputs.cache-hit != 'true' || (github.event_name == 'push' && github.ref == 'refs/heads/main') | |
| run: | | |
| poetry run python -m defender2yara --cache ./cache -o ./rules | |
| - name: Deploy on yara-rules branch | |
| if: steps.cached-vdm.outputs.cache-hit != 'true' || (github.event_name == 'push' && github.ref == 'refs/heads/main') | |
| uses: JamesIves/github-pages-deploy-action@v4.6.4 | |
| with: | |
| token: ${{ secrets.GITHUB_TOKEN }} | |
| branch: yara-rules | |
| folder: rules/${{ env.SIG_VERSION }}/ | |
| commit-message: ${{ env.SIG_VERSION }} | |
| clean: true | |
| # single-commit: true |