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TrojanDownloader:Win32/Olutall.B

First posted on 31 August 2015.
Source: Microsoft

Aliases :

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

Explanation :

Threat behavior

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

• %TEMP%\_ir_sf_temp_0\irsetup.exe
• %TEMP%\_ir_sf_temp_0\lua5.1.dll

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.



Connects to a remote host

We have seen this threat connect to a remote host, including:

• ul.to

Malware can connect to a remote host to do any of the following:

• Check for an Internet connection
• Download and run files (including updates or other malware)
• Report a new infection to its author
• Receive configuration or other data
• Receive instructions from a malicious hacker
• Search for your PC location
• Upload information taken from your PC
• Validate a digital certificate

This malware description was published using automated analysis of file SHA1 471f59446b05f8cdd4705fe0adb1317da2128ec4.

Symptoms

The following can indicate that you have this threat on your PC:

• You see a file similar to:
  • %TEMP%\_ir_sf_temp_0\irsetup.exe
  • %TEMP%\_ir_sf_temp_0\lua5.1.dll

Last update 31 August 2015

 

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