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TrojanDownloader:Win32/Tearspear

First posted on 23 August 2016.
Source: Microsoft

Aliases :

There are no other names known for TrojanDownloader:Win32/Tearspear.

Explanation :

Installation
This threat can create files on your PC, including:

• \yjywm\lbmsd.exe

It can make various registry changes during its installation, including:

In subkey: HKLM\Software\Classes\CLSID\{61F732EF-2314-D2DA-F06A-20C0562E1B50}\InprocServer32
Sets value: "(default)"
With data: "\yjywm\lbmsd.exe"



It modifies the registry so that it runs each time you start your PC. For example:

In subkey: HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Sets value: "lbmsd"
With data: "\yjywm\lbmsd.exe"

The malware uses code injection to make it harder to detect and remove. It can inject code into running processes.

Payload

Downloads malware or unwanted software

This threat can download other malware and unwanted software onto your PC.

Additional information

Creates a mutex

This threat can create a mutex on your PC. For example:

• lbmsd{61F732EF-2314-D2DA-F06A-20C0562E1B50}InprocServer32

It might use this mutex as an infection marker to prevent more than one copy of the threat running on your PC.

This malware description was published using automated analysis of file SHA1 5a9ac65cc2bc063f4887de6be68dfa65a5f270a5.

Last update 23 August 2016

 

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