Generic PWS.y!5B456E202271

This page shows details and results of our analysis on the malware Generic PWS.y!5B456E202271

Overview

This is a Trojan detection. Unlike viruses, Trojans do not self-replicate. They are spread manually, often under the premise that they are beneficial or wanted. The most common installation methods involve system or security exploitation, and unsuspecting users manually executing unknown programs. Distribution channels include e-mail, malicious or hacked Web pages, Internet Relay Chat (IRC), peer-to-peer networks, etc.


Minimum DAT

7264 (2013-11-19)

Updated DAT

7264 (2013-11-19)

Minimum Engine

5600.1067

File Length

443392

Description Added

2013-11-20

Description Modified

2013-11-20

Malware Proliferation

Characteristics

This is a Trojan

File PropertiesProperty Values
McAfee DetectionGeneric PWS.y
Length443392 bytes
MD55b456e202271378d461d4e44047b3c1d
SHA1fb2c9b5bb7e230717a43af0328bf0d9dcd84ad42


Other Common Detection Aliases

Company NamesDetection Names
ahnlabWin-Trojan/Zbot.867432
EsetWin32/Injector.ARLN
Trend MicroTSPY_ZBOT.SMZ5

Other brands and names may be claimed as the property of others.


ActivitiesRisk Levels
Attempts to write to a memory location of a previously loaded process.Medium
Enumerates many system files and directories.Low
Enumerates process listLow
Process attempts to call itself recursivelyLow
Adds or modifies a COM object.Low
Attempts to write to a memory location of an unknown processLow
No digital signature is presentInformational


McAfee ScansScan Detections
McAfee BetaGeneric PWS.y
McAfee SupportedGeneric PWS.y



System Changes

Some path values have been replaced with environment variables as the exact location may vary with different configurations.
e.g.
%WINDIR% = \WINDOWS (Windows 9x/ME/XP/Vista/7), \WINNT (Windows NT/2000)
%PROGRAMFILES% = \Program Files


The following files were analyzed:

FB2C9B5BB7E230717A43AF0328BF0D9DCD84AD42

The following files have been added to the system:

  • %APPDATA%\Pausvy\qawo.tmp
  • %APPDATA%\InstallDir\help.exe
  • %APPDATA%\Rohaxy\adcua.exe
  • %APPDATA%\Okheq\ehydg.zua

The following files were temporarily written to disk then later removed:

  • %TEMP%\tmp999bc374.bat

The following registry elements have been created:

  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\YRRYKY\
  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\CLSID\{DE7CBE17-0368-40E2-8357-1639DA027BAB}\
  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\CLSID\{DE7CBE17-0368-40E2-8357-1639DA027BAB}\INPROCHANDLER32\
  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\CLSID\{DE7CBE17-0368-40E2-8357-1639DA027BAB}\LOCALSERVER32\
  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\CLSID\{DE7CBE17-0368-40E2-8357-1639DA027BAB}\PROGID\
  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\PPT_TEST.APPLICATION\
  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\PPT_TEST.APPLICATION\CLSID\

The following registry elements have been changed:

  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\RUN\HELP = [binary data]
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\YRRYKY\XEIDOD = [binary data]
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\RUN\HELP = [binary data]

Symptoms

This symptoms of this detection are the files, registry, and network communication referenced in the characteristics section.

Method of Infection

Trojans do not self-replicate. They are spread manually, often under the premise that the executable is something beneficial. Distribution channels include IRC, peer-to-peer networks, newsgroup postings, e-mail, etc.

Removal

Please use the following instructions for all supported versions of Windows:


1. Disable Windows System Restore. For instructions, please refer to: http://www.mcafee.com/us/downloads/free-tools/disabling-system-restore.aspx

2. Update your McAfee Anti-Virus product to the latest version (when possible), and ensure the latest DAT and Engine and any applicable EXTRA.DATs are installed.

3. Run a full system scan. (On-Demand Scan)

4. Reboot, as soon as it is convenient, to ensure all malicious components are removed.

Variants