Trusted Signer Management

You can now add trusted signers of Windows or Mac processes to a whitelist in the ESM Console. When a file is signed by a whitelisted signer, Traps permits the file to run. For Windows signers, whitelisting a signer adds it to the list of highly trusted signers (see the Malware Protection Flow).

To view and configure trusted signers, your role must have the Trusted Signers privilege enabled.

To whitelist a trusted signer:

1. Select PoliciesMalwareTrusted Signers.
2. Select the platform, Windows or Mac.
3. Select the action menu, and Add Signer.
4. Enter the name of the trusted signer.
5. (Mac only) Specify the SHA1 hash of the certificate that signs the file.
   To identify the hash for the certificate, review the local agent logs after a file signed by the signer runs on the endpoint:
   1. Using Cytool, set the log level for the trapsd daemon log to 7 (debug).

      Traps-Mac:bin Traps$ sudo /Library/Application\
      Support/PaloAltoNetworks/Traps/bin/cytool
      log 7 trapsd

   2. Open the trapsd log and search for the name of the file for which you want to identify the certificate hash.
      The “CertificateHash” field identifies the hash value. For example:

      Traps-Mac:bin Traps$ open
      /var/log/traps/trapsd.log
      [...]
      “PublisherMatch” : {
             “CertificateHash” : “e86867eab7456a4fefcda5541be7d7e2c5aacbe9”,
             “PublisherName” : “software (483dwkw443)”
           },
           “SecurityEventReported” : false,
           “hash” : “7a11be65b9a8c60fa22dac612125e897a89f6f72228abe74514920618642c4e5"
         }
      

6. (Optional) Provide a description indicating why you whitelisted the signer.
7. Save the trusted signer.
   After you save a trusted signer, you can edit or delete it at any time.

   The ESM Console logs any changes to the trusted signers list and displays those logs from the MonitorESMHealth page. To filter for changes to the trusted signers, filter the Report Type column for any of the reports which begin with Trusted Signer.