Virus:TR/PSW.Delf.JW.5
Date discovered:05/10/2006
Type:Trojan
In the wild:No
Reported Infections:Low
Distribution Potential:Low
Damage Potential:Medium
Static file:Yes
File size:65.536 Bytes
MD5 checksum:42cce107128cae8f1c1a7602de86836e
VDF version:6.36.00.79
IVDF version:6.36.00.95 - Thursday, October 12, 2006

 General Method of propagation:
   • No own spreading routine


Aliases:
   •  Mcafee: PWS-Lineage
   •  Kaspersky: Trojan-PSW.Win32.Nilage.afr
   •  TrendMicro: TSPY_LINEAGE.CJA
   •  F-Secure: Trojan-PSW.Win32.Nilage.afr
   •  Sophos: Troj/WowPWS-AC
   •  Bitdefender: Win32.AV-Killer


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


Side effects:
   • Downloads a file
   • Downloads a malicious file
   • Drops a malicious file
   • Registry modification
   • Steals information

 Files It copies itself to the following location:
   • %WINDIR%\Config\svhost32.exe



The following file is created:

– %SYSDIR%\dllf.dll Further investigation pointed out that this file is malware, too. Detected as: TR/PSW.Delf.JW.5




It tries to download some files:

– The location is the following:
   • www.rwai.net/tset/mxd/**********
It is saved on the local hard drive under: %WINDIR%\e1.exe Furthermore this file gets executed after it was fully downloaded. At the time of writing it was an updated version of the malware itself.

– The location is the following:
   • www.rwai.net/tset/mxd/**********
It is saved on the local hard drive under: %WINDIR%\e1.dat

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

– [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
   • "fzg"="%WINDIR%\Config\svhost32.exe"



The following registry key is added:

– [HKLM\SOFTWARE\Microsoft\Windows]
   • "ver_"="4.0"

 Stealing It tries to steal the following information:

– The password from the following program:
   • MapleStory

 Injection –  It injects the following file into a process: dllf.dll

    Process name:
   • %all running processes%


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


Runtime packer:
In order to aggravate detection and reduce size of the file it is packed with the following runtime packer:
   • UPX

Description inserted by Adriana Popa on Thursday, November 2, 2006
Description updated by Adriana Popa on Thursday, November 2, 2006

Back . . . .