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Worm:Win32/Bokill.C

First posted on 15 April 2015.
Source: Microsoft

Aliases :

There are no other names known for Worm:Win32/Bokill.C.

Explanation :

Threat behavior

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

• %APPDATA%\tjqwvyvhcdv\svchost.exe
• %TEMP%\652.exe
• %TEMP%\svchost.exe

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

In subkey: HKLM\software\microsoft\windows\currentversion\run
Sets value: "Microsoft"
With data: "%APPDATA%\tjqwvyvhcdv\svchost.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:

• www.bitcoinsmsxpress.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:

• 0fficekeyserial15.exe

This malware description was published using automated analysis of file SHA1 983f62252e26917c6501125a71c472778d3803c7.

Symptoms

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

• You see a file similar to:
  • %APPDATA%\tjqwvyvhcdv\svchost.exe
  • %TEMP%\652.exe
  • %TEMP%\svchost.exe

• You see registry modifications such as:
• In subkey: HKLM\software\microsoft\windows\currentversion\run
  Sets value: "Microsoft"
  With data: "%APPDATA%\tjqwvyvhcdv\svchost.exe"
  
  

Last update 15 April 2015

 

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