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TROJ_PIDIEF.SHK
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TROJ_SMALL.MLC
Malware type: Trojan
Destructive: No
Platform: Windows 2000, XP, Server 2003
Encrypted: No
In the wild: Yes
Minimum scan engine: 8.900

Step 1

For Windows XP and Windows Server 2003 users, before doing any scans, please make sure you disable System Restore to allow full scanning of your computer.

Step 2

Remove malware files dropped/downloaded by TROJ_SMALL.MLC

Step 3

Identify and terminate files detected as TROJ_SMALL.MLC

  1. If the detected file is displayed in either Windows Task Manager or Process Explorer but you cannot delete it, restart your computer in safe mode. To do this, refer to this link for the complete steps.
  2. If the detected file is not displayed in either Windows Task Manager or Process Explorer, continue doing the next steps.

Step 4

Delete this registry value

Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.


  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
    • JHWKF = {malware path and file name}

Step 5

Scan your computer with your Trend Micro product to delete files detected as TROJ_SMALL.MLC . If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check this Knowledge Base page for more information.


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Analysis By: Jeffrey Bernardino