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HackTool:MSIL/Noancooe.B


First posted on 15 December 2015.
Source: Microsoft

Aliases :

There are no other names known for HackTool:MSIL/Noancooe.B.

Explanation :

Threat behavior

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

  • %APPDATA%\c97e261a-abeb-4aa5-9797-7611f82457ca\run.dat
  • %APPDATA%\abyss.exe
  • \abyss.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: "Abyss"
With data: "%APPDATA%\abyss.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:
  • update.razerhost.net using port 53317
  • dns.msftncsi.com using port 53
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


Additional information

Creates a mutex

This threat can create a mutex on your PC. For example:

  • {5df269ed-cd68-4f00-a189-6946c1fd909b}


It might use this mutex as an infection marker to prevent more than one copy of the threat running on your PC.



This malware description was published using automated analysis of file SHA1 7110f4511dd5c42370a714c2c5ba2ef13dff6b3f.

Symptoms

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

  • You see a file similar to:
    • %APPDATA%\c97e261a-abeb-4aa5-9797-7611f82457ca\run.dat
    • %APPDATA%\abyss.exe
    • \abyss.exe
  • You see registry modifications such as:
    • In subkey: HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
      Sets value: "Abyss"
      With data: "%APPDATA%\abyss.exe"

  • You see the following mutex:
    • {5df269ed-cd68-4f00-a189-6946c1fd909b}

Last update 15 December 2015

 

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