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Trojan:Win32/Flydop.A

First posted on 05 February 2014.
Source: Microsoft

Aliases :

There are no other names known for Trojan:Win32/Flydop.A.

Explanation :

Threat behavior

Installation

Trojan:Win32/Flydop.A copies itself to %windir%\update.exe. The malware changes the following registry entries so that it runs each time you start your PC:

In subkey: HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Sets value: "iedop.exe"
With data: "c:\windows\\update.exe" Sets value: "Shell"
With data: "explorer.exe c:\windows\\update.exe"
In subkey: HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon

Payload

Contacts remote hosts
Trojan:Win32/Flydop.A may contact the following remote hosts using port 80:

• tj.tchuisuo.com
• xos.xxooss.com

Commonly, malware does this to:

• Confirm Internet connectivity
• Report a new infection to its author
• Receive configuration or other data
• Download and run files, including updates or other malware
• Receive instructions from a remote hacker
• Upload data taken from your PC

This malware description was produced and published using automated analysis of file SHA1 88993f33415aa51eedbcc6521e027f5fc67c360d.Symptoms

System changes

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

• You have these files:
  
  %windir%\update.exe

• You see these entries or keys in your registry:
  
  Sets value: "iedop.exe"
  With data: "c:\windows\\update.exe"
  In subkey: HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
  
  Sets value: "Shell"
  With data: "explorer.exe c:\windows\\update.exe"
  In subkey: HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon

Last update 05 February 2014

 

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