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TrojanDownloader:Win32/Trulop.A


First posted on 11 January 2017.
Source: Microsoft

Aliases :

There are no other names known for TrojanDownloader:Win32/Trulop.A.

Explanation :

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

  • c:\temp\winlog.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: "WinSupport"
With data: ""c:\temp\winsupport\client32.exe" "

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

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:
  • www.prntscrn.pictures 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:
  • winlog.exe


Bypasses firewall

This threat can modify, bypass, or disable your firewall. It can do this by changing your firewall settings, or by adding a new rule so that it, or other applications, aren't detected.

You might need to restore your Windows Firewall settings.

This malware description was published using automated analysis of file SHA1 f02de789cbb667656b6d35f33ddcc56ce53a02cb.

Last update 11 January 2017

 

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