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TSPY_MAILPASS.YO

May 17, 2017
 Analysis by: Byron Jon Gelera
 PLATFORM:

Windows

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:
 INFORMATION EXPOSURE:

  • Threat Type: Spyware

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

Infection Channel:

Dropped by other malware, Downloaded from the Internet


This Spyware may arrive bundled with malware packages as a malware component. It arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

It does not have any propagation routine.

It does not have any backdoor routine.

  TECHNICAL DETAILS

File Size:

95,968 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

02 Mar 2017

Payload:

Steals information

Arrival Details

This Spyware may arrive bundled with malware packages as a malware component.

It arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Propagation

This Spyware does not have any propagation routine.

Backdoor Routine

This Spyware does not have any backdoor routine.

Information Theft

This Spyware gathers the following data:

  • Account Name
  • Application Name
  • Email Server
  • Server Type (POP3/IMAP/SMTP)
  • User Name
  • Password

It attempts to steal stored email credentials from the following:

  • Outlook Express
  • Microsoft Outlook 2000/2002/2003/2007/2010/2013/2016
  • Windows Mail
  • Windows Live Mail
  • IncrediMail
  • Eudora
  • Netscape 6.x/7.x
  • Mozilla Thunderbird
  • Group Mail Free
  • Yahoo! Mail
  • Hotmail/MSN mail
  • Gmail

Stolen Information

This Spyware saves the stolen information in the following file:

  • {Malware Path}\MP.txt

Other Details

This Spyware does the following:

  • It drops the following files when executed with the parameter "/savelangfile":
    • {Malware Path}\{Malware File name}_lng.ini

  SOLUTION

Minimum Scan Engine:

9.850

FIRST VSAPI PATTERN FILE:

13.264.04

FIRST VSAPI PATTERN DATE:

08 Mar 2017

VSAPI OPR PATTERN File:

13.265.00

VSAPI OPR PATTERN Date:

09 Mar 2017

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 these files

[ Learn More ]
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.
  • {Malware Path}\MP.txt
  • {Malware Path}\{Malware File Name}_lng.ini

Step 4

Scan your computer with your Trend Micro product to delete files detected as TSPY_MAILPASS.YO. 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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