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Ransom:Win32/Cerber.D

First posted on 07 September 2016.
Source: Microsoft

Aliases :

There are no other names known for Ransom:Win32/Cerber.D.

Explanation :

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

• %APPDATA%\{b9624424-31e6-a7fd-21e6-3698086a28f5}\tcpsvcs.exe
• \tcpsvcs.lnk

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: "TCPSVCS"
With data: ""%APPDATA%\{b9624424-31e6-a7fd-21e6-3698086a28f5}\tcpsvcs.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:

• freegeoip.net using port 80
• ip-api.com using port 80
• ipinfo.io 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

It can stop some processes from running on your PC, including:

• "
• TCPSVCS.EXE

Additional information

Creates a mutex

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

• {C20CD437-BA6D-4ebb-B190-70B43DE3B0F3}
• shell.{FF0DE3B1-3157-CC28-B695-975438C31E9F}

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 033d0ffb4db8851cbc3639d649571fe01a1c71c0.

Last update 07 September 2016

 

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