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Ransom:MSIL/Nojocrypt.A

First posted on 05 April 2016.
Source: Microsoft

Aliases :

There are no other names known for Ransom:MSIL/Nojocrypt.A.

Explanation :

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

• %APPDATA%\locker.exe

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

In subkey: HKCU\Software\Microsoft\Windows\CurrentVersion\Run
Sets value: "application"
With data: "%APPDATA%\locker.exe"

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

Payload

Connects to a remote host

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

• auth.smtp.1and1.fr using port 587

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 976ee9f6defa78638e5e4b0bc868dd39ad4bd899.

Last update 05 April 2016

 

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