TROJ_YAKES.AO

This malware is part of a malware spam campaign. It stops most of its malicious routines if certain processes are found running on the system.

To get a one-glance comprehensive view of the behavior of this Trojan, refer to the Threat Diagram shown below.

This Trojan does not continue with its routine under certain conditions. It injects codes into its created process SVCHOST.EXE.

It may connect to a certain URL to report system infection and download possibly malicious files.

This Trojan arrives as an attachment to email messages spammed by other malware/grayware or malicious users.

It connects to certain websites to send and receive information. It deletes itself after execution.

Arrival Details

This Trojan arrives as an attachment to email messages spammed by other malware/grayware or malicious users.

Installation

This Trojan adds the following processes:

• svchost.exe

Other Details

This Trojan connects to the following website to send and receive information:

• http://{BLOCKED}6.{BLOCKED}6.103.207/las/index.php

It deletes itself after execution.

NOTES:

It does not continue with its routine under the following conditions:

• The process WIRESHARK.EXE is running in the affected system
• GetModuleHandle to the files pstorec.dll and SbieDll.dll is successful
• The value of "VideoBiosVersion"; under the registry

  HKEY_LOCAL_MACHINE\HARDWARE\
  DESCRIPTION\System

  contains any of the following strings:
  • VIRTUALBOX
  • QEMU
  • VMWARE
  • VBOX
  • VIRTUAL
  • WARE
  • ARRAY
  • QM00001
  • 00000000000000000001
• The file name of the sample executed is any of the following:
  • SAMPLE
  • VX
  • VIRUS

It injects codes into its created process SVCHOST.EXE.

It may connect to the abovementioned URL to report system infection and download possibly malicious files.