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TrojanDownloader:MSIL/Downcoin.B

First posted on 19 February 2015.
Source: Microsoft

Aliases :

There are no other names known for TrojanDownloader:MSIL/Downcoin.B.

Explanation :

Threat behavior

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

• %APPDATA%\winminer.exe
• %APPDATA%\winsrv.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: "winsrv.exe"
With data: "%APPDATA%\winsrv.exe"



Payload


Downloads malware or unwanted software

This threat can download other malware and unwanted software onto your PC.



Connects to a remote host

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

• filehostonline.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)

We have seen this threat access online content, including:

• bitcoin-miner.exe

This malware description was published using automated analysis of file SHA1 97f5b3534c3a88d87f1ede3dd730ebb9b1185d17.Symptoms

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

• You see these files:
  • %APPDATA%\winminer.exe
  • %APPDATA%\winsrv.exe

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

Last update 19 February 2015

 

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