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PWS:MSIL/Nimisi.A

First posted on 11 February 2015.
Source: Microsoft

Aliases :

There are no other names known for PWS:MSIL/Nimisi.A.

Explanation :

Threat behavior

Installation


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

It can create the following files on your PC:

• %TEMP% \iepv.exe
• %TEMP%\passwordfox.exe

Payload


Steals your sensitive information

This threat can steal your sensitive information, such as your user names and passwords for:

• Email or social media websites
• Banking websites
• Online games

Connects to a remote host

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

• www.download.windowsupdate.com using port 80
• tazbot.mooo.com using port 80

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

We have seen this threat access online content, including:

• authrootseq.txt

Additional information

Creates a mutex

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

• awdaw2214a

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 f4827de8c3487b2747341f20fd0f08bc79ee0096. Symptoms

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

• The presence of a mutex such as:
  • awdaw2214a

Last update 11 February 2015

 

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