Home / malwarePDF  

TrojanDropper:MSIL/Nunscant.A


First posted on 14 December 2015.
Source: Microsoft

Aliases :

There are no other names known for TrojanDropper:MSIL/Nunscant.A.

Explanation :

Threat behavior

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

  • %TEMP%\microsoft\svchost.exe
  • %TEMP%\blackdata.dat
  • %USERPROFILE%\music\nn.exe
  • \svchost.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: "737944d09cccf760440837f88b40a02f"
With data: "c:\users\admini~1\appdata\local\temp\microsoft\svchost.exe"


This threat can make changes to scheduled tasks on your PC, including:

  • Launching tasks
  • Creating tasks
  • Deleting tasks


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



Payload


Installs malware or unwanted software

This trojan can install other malware or unwanted software onto your PC.



Connects to a remote host

We have seen this threat connect to a remote host, including:
  • alaa2.no-ip.biz using port 1177
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


This malware description was published using automated analysis of file SHA1 a76d75cd8c4d6446ebe85e6a263845f024fde4bf.

Symptoms

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

  • You see a file similar to:
    • %TEMP%\microsoft\svchost.exe
    • %TEMP%\blackdata.dat
    • %USERPROFILE%\music\nn.exe
    • \svchost.exe
  • You see registry modifications such as:
    • In subkey: HKCU\Software\Microsoft\Windows\CurrentVersion\Run
      Sets value: "737944d09cccf760440837f88b40a02f"
      With data: "c:\users\admini~1\appdata\local\temp\microsoft\svchost.exe"

Last update 14 December 2015

 

TOP

Malware :

Family: