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Worm:Win32/Rebhip.Z

First posted on 12 June 2015.
Source: Microsoft

Aliases :

There are no other names known for Worm:Win32/Rebhip.Z.

Explanation :

Threat behavior

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

• \win\explorer.exe
• \win\logs.dat
• \win\plugin.dat

It modifies the registry so that it runs each time you start your PC. For example:

In subkey: HKLM\Software\Microsoft\Active Setup\Installed Components\{MGM5XI3D-677K-NP10-411I-RX8TPT06L76O}
Sets value: "StubPath"
With data: "\win\explorer.exe restart"
In subkey: HKLM\Software\Microsoft\Windows\CurrentVersion\Run
Sets value: "explorer"
With data: "\win\explorer.exe"


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



Payload


It can stop some processes from running on your PC, including:

• conhost.exe

Additional information

Creates a mutex

This threat can create one or more mutexes on your PC. For example:

• Spy-Net
• Spy-Net_Persist
• Spy-Net_Sair

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 8c0ef076a169404ab705984660749039e3c5d1cf.

Symptoms

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

• You see a file similar to:
  • \win\explorer.exe
  • \win\logs.dat
  • \win\plugin.dat

• You see registry modifications such as:
  
  • In subkey: HKLM\Software\Microsoft\Active Setup\Installed Components\{MGM5XI3D-677K-NP10-411I-RX8TPT06L76O}
    Sets value: "StubPath"
    With data: "\win\explorer.exe restart"
    
    
  • In subkey: HKLM\Software\Microsoft\Windows\CurrentVersion\Run
    Sets value: "explorer"
    With data: "\win\explorer.exe"

• You see the following mutex:
  • Spy-Net
  • Spy-Net_Persist
  • Spy-Net_Sair

Last update 12 June 2015

 

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