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PWS:MSIL/Tosnir.A

First posted on 08 February 2017.
Source: Microsoft

Aliases :

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

Explanation :

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

• %LOCALAPPDATA%\adobe\updater5\adobeupdaterprefs.dat

This threat can make changes to scheduled tasks on your PC, including:

• Launching tasks
• Creating tasks
• Deleting tasks

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

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:

• mail.tonysizzo.com using port 587
• swupmf.adobe.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:

• reader8rdr-en_US.upd
• AdobeUpdater.upd

Additional information

Creates a mutex

This threat can create one or more mutexes on your PC. For example:

• 2AC1A572DB6944B0A65C38C4140AF2F4d30006512A0
• 2AC1A572DB6944B0A65C38C4140AF2F4d30006512A8
• 6QTVEilJgazXn/Vacpha3g==
• qkLG95KgjUnahO6+FdTd6w==
• SnuLK1T1yk/PlcGk7D7m5w==

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 66158a0dae507db201b10aff0f68779e4d0580f9.

Last update 08 February 2017

 

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