TR/NSAnti.B.3 - Trojan

See also

Summary

Full description

Statistics

Virus:	TR/NSAnti.B.3
Date discovered:	28/07/2006
Type:	Trojan
In the wild:	No
Reported Infections:	Low
Distribution Potential:	Low
Damage Potential:	Medium
Static file:	Yes
File size:	30.855 Bytes
MD5 checksum:	7ef7d92faee21f9940dd89140A231ef0
VDF version:	6.35.01.15

General Method of propagation:
   • No own spreading routine

Aliases:
   • Kaspersky: Trojan-PSW.Win32.Lmir.ayt
   • TrendMicro: TSPY_DELF.BVH
   • Bitdefender: Trojan.NSAnti.B

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

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

Files It copies itself to the following locations:
• %WINDIR%\help\ZTpass.exe
• %WINDIR%\help\ZTYX.CHI

The following file is created:

– %WINDIR%\help\ZThook.dll Further investigation pointed out that this file is malware, too. Detected as: TR/PSW.Lmir.awj.1

Registry The following registry keys are added in order to load the service after reboot:

– [HKLM\SYSTEM\CurrentControlSet\Services\ZTmassacre]
   • "Type"=dword:00000110
   • "Start"=dword:00000002
   • "ErrorControl"=dword:00000000
   • "ImagePath"="%WINDIR%\help\ZTpass.exe"
   • "DisplayName"="ZT Massacre"
   • "ObjectName"="LocalSystem"
   • "Description"="ZTmassacre"

– [HKLM\SYSTEM\CurrentControlSet\Services\ZTmassacre\Security]
   • "Security"=%hex values%

– [HKLM\SYSTEM\CurrentControlSet\Services\ZTmassacre\Enum]
   • "0"="Root\\LEGACY_ZTMASSACRE\\0000"
   • "Count"=dword:00000001
   • "NextInstance"=dword:00000001

Miscellaneous Internet connection:

It queries with the name:
• yhb1978.3322.org

File details Runtime packer:
In order to aggravate detection and reduce size of the file it is packed with a runtime packer.

See a brief description here.

Description inserted by Daniel Constantin on Wed, 09 Aug 2006 14:41 (GMT+1)
Description updated by Daniel Constantin on Wed, 09 Aug 2006 14:54 (GMT+1)

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