1. Symantec/
  2. Security Response/
  3. Infostealer.Shiz


Risk Level 1: Very Low

December 9, 2011
November 27, 2013 9:41:18 AM
Systems Affected:
When the Trojan is executed, it copies itself as the following file:
%Windir%\AppPatch\[RANDOM FILE NAME]

Note: [RANDOM FILE NAME] may be one of the following file names and file extensions:
  • ijntbx.exe
  • oupcckm.exe
  • smnoft.dat
  • hagveo.dat
  • fvvkpp.dat
  • sgacpck.dat
  • nobiya.exe
  • fmuqwvc.dat
  • tpfirc.exe
  • sjnaaws.exe

It then modifies the following registry entry so that it runs every time Windows starts:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\"Userinit" =
"%System%\userinit.exe, %Windir%\AppPatch\[RANDOM FILE NAME]"

It also creates the following registry entry so that it runs every time Windows starts:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\"[RANDOM NUMBERS]" = "%Windir%\AppPatch\[RANDOM FILE NAME]"

It then creates the following registry subkey:

Note: [RANDOM NUMBERS] may be one of the following sets of numbers:
  • 68aa6c1d
  • 68aa6c8ba

Next, the threat checks for various processes, including the following:
  • ollydbg
  • wireshark
  • idaq
  • dumpcap
  • vmwaretray

It also checks for files, user names, or paths related to virtual machines or test environments.

The threat will block connections to URLs containing the following strings:
  • avast.com
  • kaspersky
  • drweb
  • eset.com
  • antivir
  • avira
  • virustotal
  • virusinfo
  • z-oleg.com
  • kltest.org.ru
  • trendsecure
  • anti-malware
  • comodo.com

The Trojan then searches for system processes to inject it's malicious payload into. Once it has injected the payload into the system process, it will inject all processes on the compromised computer in order to find passwords and cryptographic certificates.

It attempts to steal information related to the following services:
  • Inist Co
  • InterBank
  • Marfin Laiki Bank
  • Qiwi.ru
  • Yota

It gathers the information by reading the memory of the processes, accessing the clipboard, and using keylogging applications. It also steals cryptographic credentials from the user.

The Trojan then contacts the following domain to receive commands:

The commands allow the Trojan to create new files and processes on the compromised computer and/or to inject malicious payloads into processes.


Symantec Security Response encourages all users and administrators to adhere to the following basic security "best practices":

  • Use a firewall to block all incoming connections from the Internet to services that should not be publicly available. By default, you should deny all incoming connections and only allow services you explicitly want to offer to the outside world.
  • Enforce a password policy. Complex passwords make it difficult to crack password files on compromised computers. This helps to prevent or limit damage when a computer is compromised.
  • Ensure that programs and users of the computer use the lowest level of privileges necessary to complete a task. When prompted for a root or UAC password, ensure that the program asking for administration-level access is a legitimate application.
  • Disable AutoPlay to prevent the automatic launching of executable files on network and removable drives, and disconnect the drives when not required. If write access is not required, enable read-only mode if the option is available.
  • Turn off file sharing if not needed. If file sharing is required, use ACLs and password protection to limit access. Disable anonymous access to shared folders. Grant access only to user accounts with strong passwords to folders that must be shared.
  • Turn off and remove unnecessary services. By default, many operating systems install auxiliary services that are not critical. These services are avenues of attack. If they are removed, threats have less avenues of attack.
  • If a threat exploits one or more network services, disable, or block access to, those services until a patch is applied.
  • Always keep your patch levels up-to-date, especially on computers that host public services and are accessible through the firewall, such as HTTP, FTP, mail, and DNS services.
  • Configure your email server to block or remove email that contains file attachments that are commonly used to spread threats, such as .vbs, .bat, .exe, .pif and .scr files.
  • Isolate compromised computers quickly to prevent threats from spreading further. Perform a forensic analysis and restore the computers using trusted media.
  • Train employees not to open attachments unless they are expecting them. Also, do not execute software that is downloaded from the Internet unless it has been scanned for viruses. Simply visiting a compromised Web site can cause infection if certain browser vulnerabilities are not patched.
  • If Bluetooth is not required for mobile devices, it should be turned off. If you require its use, ensure that the device's visibility is set to "Hidden" so that it cannot be scanned by other Bluetooth devices. If device pairing must be used, ensure that all devices are set to "Unauthorized", requiring authorization for each connection request. Do not accept applications that are unsigned or sent from unknown sources.
  • For further information on the terms used in this document, please refer to the Security Response glossary.
Writeup By: Santiago Cortes
Summary| Technical Details| Removal

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