Analysis by: Jennifer Gumban




  • Threat Type: Exploit

  • Destructiveness: No

  • Encrypted: Yes

  • In the wild: Yes


This Exploit arrives as an attachment to email messages mass-mailed by other malware/grayware or malicious users.

It takes advantage of certain vulnerabilities.


File Size: 769,399 bytes
File Type: Other
Memory Resident: No
Initial Samples Received Date: 12 Apr 2017

Arrival Details

This Exploit arrives as an attachment to email messages mass-mailed by other malware/grayware or malicious users.


This Exploit drops and executes the following files:

  • %User Temp%\putty.exe

(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Local\Temp on Windows Vista, 7, and 8.)

Other Details

This Exploit takes advantage of the following vulnerabilities:

  • CVE-2014-6352


Minimum Scan Engine: 9.850

Step 1

Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.

Step 2

Note that not all files, folders, and registry keys and entries are installed on your computer during this malware's/spyware's/grayware's execution. This may be due to incomplete installation or other operating system conditions. If you do not find the same files/folders/registry information, please proceed to the next step.

Step 3

Search and delete this file

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There may be some files that are hidden. Please make sure you check the Search Hidden Files and Folders checkbox in the "More advanced options" option to include all hidden files and folders in the search result.  
  • %User Temp%\putty.exe

Step 4

Scan your computer with your Trend Micro product to delete files detected as TROJ_CVE20146352.E. 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 the following Trend Micro Support pages for more information:

Step 5

Download and apply this security patch Refrain from using these products until the appropriate patches have been installed. Trend Micro advises users to download critical patches upon release by vendors.

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