Virus:TR/Spy.Banker.AATZ
Date discovered:27/05/2008
Type:Trojan
In the wild:Yes
Reported Infections:Low to medium
Distribution Potential:Low to medium
Damage Potential:Low to medium
Static file:Yes
File size:982.016 Bytes
MD5 checksum:5b82c2b7e89a40fb8cd9bf80cac653b5
IVDF version:7.00.04.96 - Tuesday, May 27, 2008

 General Methods of propagation:
   • No own spreading routine


Aliases:
   •  Symantec: Downloader
   •  Kaspersky: Trojan-Spy.Win32.Banker.nlw
   •  F-Secure: Trojan-Spy.Win32.Banker.nlw
   •  Sophos: Mal/EncPk-DO
   •  Panda: Trj/Banker.LAQ
   •  Grisoft: Delf.EWW
   •  VirusBuster: TrojanSpy.Banker.BCIJ
   •  Eset: Win32/Spy.Banker.OVQ trojan
   •  Bitdefender: Trojan.Spy.Banker.AATZ


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


Side effects:
   • Drops files
   • Drops malicious files

 Files The following files are created:

– Non malicious files:
   • %SYSDIR%\c__2303.nls
   • %SYSDIR%\c__34895.nls
   • %SYSDIR%\c__374.nls
   • %SYSDIR%\c__0593.nls
   • %SYSDIR%\c__23732.nls
   • %SYSDIR%\c__10983.nls
   • %SYSDIR%\c__3478.nls
   • %SYSDIR%\c__3479.nls
   • %SYSDIR%\c__3480.nls
   • %SYSDIR%\c__3481.nls

– %SYSDIR%\amp.ini This is a non malicious text file with the following content:
   • A01

– %SYSDIR%\msupdate.dll Further investigation pointed out that this file is malware, too. Detected as: TR/Spy.Banker.AATZ.1

– %SYSDIR%\msiesetup.exe Furthermore it gets executed after it was fully created. Further investigation pointed out that this file is malware, too. Detected as: TR/Spy.Banker.AATZ.2

– %WINDIR%\setup.cmd Further investigation pointed out that this file is malware, too. Detected as: BAT/Banker.AATZ

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

Description inserted by Thomas Wegele on Wednesday, July 9, 2008
Description updated by Thomas Wegele on Wednesday, July 9, 2008

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