Full description

Virus:	TR/Spy.8192.133
Date discovered:	07/04/2010
Type:	Trojan
In the wild:	Yes
Reported Infections:	Low
Distribution Potential:	Low
Damage Potential:	Low to medium
Static file:	Yes
File size:	8.192 Bytes
MD5 checksum:	5b80ab11e472cd8e26ef1ade5855e17e
VDF version:	7.10.02.129
IVDF version:	7.10.06.40 - Wednesday, April 7, 2010

General Method of propagation:
   • Autorun feature

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

Files It copies itself to the following locations:
   • %drive%\Seguridad\@b@ddon.exe
   • C:\Seguridad\ctfmon.exe
   • C:\Bootfont.sys
   • %recycle bin%\Bootfont.sys

The following files are created:

– %drive%\AutoRun.inf This is a non malicious text file with the following content:
   • %code that runs malware%

– %recycle bin%\boot.ini
– %recycle bin%\AUTOEXEC.BAT
– %recycle bin%\NTDETECT.COM
– %recycle bin%\ntldr
– %recycle bin%\CONFIG.SYS
– %recycle bin%\IO.SYS
– %recycle bin%\MSDOS.SYS

Registry The following registry keys are added in order to run the processes after reboot:

– [HKLM\Software\Microsoft\Windows\CurrentVersion\Run]
   • "index"="C:\Seguridad\ctfmon.exe"

– [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
   • "index"="C:\Seguridad\ctfmon.exe"

The following registry keys are changed:

– [HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced]
   New value:
   • "Hidden"="2"
   • "HideFileExt"="Seguridad"

– [HKCU\SoftWare\Microsoft\Windows NT\CurrentVersion\Windows]
   New value:
   • "load"="C:\Seguridad\ctfmon.exe"

– [HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon]
   New value:
   • "Shell"="Explorer.exe,C:\Seguridad\ctfmon.exe"

– [HKCU\Software\Microsoft\Windows NT\CurrentVersion\Winlogon]
   New value:
   • "Shell"="Explorer.exe,C:\Seguridad\ctfmon.exe"

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

說明撰寫者 Ana Maria Niculescu 開啟 2010年7月8日星期四
說明更新者 Ana Maria Niculescu 開啟 2010年7月14日星期三

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