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Can I block SHA-1 (Secure Hash Algorithm 1) hash values using my Trend Micro product?

    • 更新於:
    • 29 Nov 2023
    • 產品/版本:
    • OfficeScan 11.0
    • Deep Security 11.0
    • InterScan Messaging Security Virtual Appliance 9.1
    • InterScan Web Security Virtual Appliance 6.5
    • Endpoint Application Control 2.0
    • Smart Protection Server 3.3
    • Deep Discovery Inspector 5.0
    • Deep Discovery Email Inspector 3.0
    • Deep Discovery Analyzer 6.0
    • Deep Security 12.0
    • Deep Discovery Inspector 5.1
    • Deep Discovery Inspector 5.5
    • Apex One
    • 作業系統:
    • N/A N/A

Security administrators receive advisories from different organizations containing IOCs. They are often tasked to block the IOCs which include SHA-1 hash values. Learn which Trend Micro products are capable of blocking SHA-1 hash values.


SHA-1 hash values can be blocked using Control Manager’s or Apex Central’s User-Defined Suspicious Object (UDSO). Other Trend Micro products sync the UDSO and take action on a file with matching SHA-1 hash value depending on the configuration.

Another way is with Apex One leveraging Application Control.

The following products sync SHA-1 User-Defined Suspicious Object (UDSO) from Control Manager/Apex Central:

  • Interscan Web Security Virtual Appliance (IWSVA)
  • Endpoint Application Control (EAC)
  • Deep Discovery Inspector (DDI)
  • Deep Discovery Email Inspector (DDEI)
  • Apex One (requires Application Control)

The following products DO NOT sync SHA-1 User-Defined Suspicious Object (UDSO) from Control Manager/Apex Central:

  • OfficeScan
  • Deep Discovery Analyzer (DDAn)
  • Deep Security (DS)
  • Smart Protection Server (SPS)
  • Interscan Messaging Security Virtual Appliance (IMSVA)

To block SHA-1 hash values, use any of the following:

You can contact Trend Micro Technical Support to convert SHA256 or MD5 hash values to SHA1. Take note that if the hash value is not on our database, then we may need to request for the actual sample for us generate the SHA1 value of the file.

To block SHA-1 hash values using Control Manager, do the following:

  1. Log on to Trend Micro Control Manager.
  2. Go to Administration > Suspicious Objects > User-Defined Suspicious Objects.
  3. Click Add.


  4. For the Type, select File SHA-1.
  5. Enter the SHA-1 hash value, and configure the scan action:
    • Log
    • Block
    • Quarantine


  6. Click Add.
  1. Log on to Trend Micro Apex Central.
  2. Go to Threat Intel > Custom Intelligence.
  3. Click Add.

    Click Add

  4. Enter the SHA-1 hash value and configure the scan action.

    • Log
    • Block

    Scan Action

Create an Application Control Criteria

  1. Log on to Trend Micro Apex Central.
  2. Go to Policies > Policy Resources > Application Control Criteria.
  3. Click Add Criteria > Block

    Select Block

  4. Add name.
  5. Change Match method to ‘Hash values’.
  6. Select either SHA-1 or SHA-256.

    Hash values

    Apply the created Application Control Criteria

  7. Go to Policies > Policy Management.
  8. Select your Policy.
  9. Under Application Control, Assign Rule (if with Active Directory integration) or click ‘All user accounts’.
  10. Select the recently created Application Control Criteria.

    Application Control Criteria

  11. Click Ok then click Deploy.
Application Control only supports blocking of Portable Executable (PE). Integrated Application Control defects PE file format when the file is executed. PE file extensions are as follows: .acm, .ax, .cpl, .dll, .drv, .efi, .exe, .mui, .ocx, .scr, .sys, .tsp
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