T03 · Remote Payload Retrieval and Execution
- Location
scripts/1_install_prerequisites.sh:49- Finding
Persistent Force-Installation of a Remotely Mutable Chrome Extension
- Content
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[ubuntu] Force-installing DataHive extension via Chrome policy..." sudo mkdir -p /etc/opt/chrome/policies/managed sudo tee /etc/opt/chrome/policies/managed/extensions.json > /dev/null << EOF { "ExtensionInstallForcelist": [ "${EXTENSION_ID};https://clients2.google.com/service/update2/crx" ] } EOF ``` ```bash echo "==> [macos] Applying managed extension policy (requires sudo)..." POLICY_DIR="/Library/Managed Preferences" POLICY_FILE="$POLICY_DIR/com.google.Chrome.plist" POLICY_VALUE="${EXTENSION_ID};https://clients2.google.com/service/update2/crx" sudo mkdir -p "$POLICY_DIR" sudo /usr/libexec/PlistBuddy -c "Delete :ExtensionInstallForcelist" "$POLICY_FILE" 2>/dev/null || true sudo /usr/libexec/PlistBuddy -c "Add :ExtensionInstallForcelist array" "$POLICY_FILE" sudo /usr/libexec/PlistBuddy -c "Add :ExtensionInstallForcelist:0 string $POLICY_VALUE" "$POLICY_FILE" sudo plutil -lint "$POLICY_FILE" >/dev/null ``` ### Technical Analysis The installer uses administrator privileges to create a managed Chrome policy that force-installs extension `bonfdkhbkkdoipfojcnimjagphdnfedb`. The extension is downloaded from an external update service, but its source code, permissions, version, and integrity metadata are absent from the audited project. Consequently, the effective browser code can change after this Skill has been reviewed. Managed force-installed extensions generally cannot be disabled by an ordinary user and remain installed across browser and system sessions. The documented magic-link workflow only requires an HTTP request, email retrieval, and CDP navigation; it does not establish why a system-wide forced extension is necessary. On macOS, ...[truncated 1381 chars]- Remediation
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