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Date discovered:16/07/2008
In the wild:Yes
Reported Infections:Low
Distribution Potential:Low
Damage Potential:Low to medium
Static file:No
File size:~800.000 Bytes
IVDF version:

 General Method of propagation:
   • No own spreading routine

   •  Kaspersky: Trojan-Spy.Win32.Delf.chk
   •  F-Secure: Trojan-Spy.Win32.Delf.chk
   •  Sophos: Sus/Uddo-B

Platforms / OS:
   • Windows 95
   • Windows 98
   • Windows 98 SE
   • Windows NT
   • Windows ME
   • Windows 2000
   • Windows XP
   • Windows 2003

Side effects:
   • Drops files
   • Registry modification
   • Steals information

Right after execution the following information is displayed:

 Files It copies itself to the following locations:
   • %PROGRAM FILES%\peppi_Grusskarten\peppi.exe
   • %PROGRAM FILES%\peppi_Grusskarten\lisys.exe
   • %SYSDIR%\host.exe

The following files are created:

– Non malicious files:
   • %PROGRAM FILES%\peppi_Grusskarten\license.txt
   • %APPDATA%\proxy.pac
   • %APPDATA%\syslog2.dll

 Registry The following registry key is added in order to run the process after reboot:

– [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
   • "vhost"="%SYSDIR%\host.exe"

The following registry key is added:

– [HKLM\Software\Microsoft\Windows\CurrentVersion\Uninstall\
   • "DisplayName"="peppi_Grusskarten"
   • "UninstallString"="%PROGRAM FILES%\peppi_Grusskarten\lisys.exe"

 Backdoor Contact server:
The following:

As a result it may send some information. This is done via the HTTP GET request on a PHP script.

Sends information about:
    • Computer name
    • Username
    • Information about the Windows operating system

 Stealing – It uses a network sniffer that checks for the following strings:
   •;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; http://www.billiger,de/;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;*/search; http://google.*/search;;; http://google.*/search;;

 File details Programming language:
The malware program was written in Delphi.

Description inserted by Thomas Wegele on Thursday, July 17, 2008
Description updated by Thomas Wegele on Thursday, July 17, 2008

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