Need help? Ask the community or hire an expert.
Go to Avira Answers
病毒:VBS/Small.Sasan.A
发现日期:13/12/2012
类型:蠕虫
广泛传播:
病毒传播个案呈报:低程度
感染/传播能力:低程度至中程度
破坏 / 损害程度:低程度至中程度
静态文件:
文件大小:10.164 字节
MD5 校检和:efe528483fd3c6ed75a8c1e016026e10
VDF 版本:7.11.53.216 - 13 Aralık 2012 Perşembe
IVDF 版本:7.11.53.216 - 13 Aralık 2012 Perşembe

 况概描述 传播方法:
   • 网络驱动器映射


别名:
   •  Sophos: VBS/Sasan-Fam
   •  Grisoft: VBS/LoveLetter


平台/操作系统:
   • Windows 95
   • Windows 98
   • Windows 98 SE
   • Windows NT
   • Windows ME
   • Windows 2000
   • Windows XP
   • Windows 2003


副作用:
   • 关闭安全应用程序
   • 植入文件
   • 注册表修改


执行完毕之后,它会立即运行 Windows 应用程序以显示以下窗口:





   Merlin: Huh..Banjarbaru makin panas aja ya
   Merlin: It's now time to work. Jangan ngerumpi mulu..
   Merlin: Hope you enjoy today.
   Merlin: Komputernya ta dinginin dulu OK
   Merlin: Cape dech, Bye Bye Ahh!

 文件 它将本身复制到以下位置:
   • %sysdir%\ctfmon.exe.vbe
   • %驱动器%\Thumbs.db.vbe
   • %驱动器%\%删除的文件%.vbe

搜索以下目录:
   • %驱动器%\

会关注以下文件类型:
   • .doc
   • .docx
   • .xls
   • .ppt
   • .jpg
   • .bmp
   • .3gp
   • .rm

之后会删除原件。



创建以下文件:

%驱动器%\autorun.inf 这是一个无恶意的文本文件,包含以下内容:
   • [autorun]
     shellexecute=wscript.exe Thumbs.db.vbe




它会尝试执行以下文件:

– 文件名:
   • %sysdir%\cmd.exe
使用以下命令行参数: shutdown -s -t 00 -f -m

 注册表 会添加以下注册表项,以便在系统重新引导后运行进程:

– [HKLM\Software\Microsoft\Windows\CurrentVersion\Run]
   • CTFMon="%sysdir%\ctfmon.exe.vbe"



会添加以下注册表项目注册值:

– [HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\
   Advanced]
   • Hidden=dword:00000002

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\cmd.exe]
   • Debugger="notepad.exe"

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\install.exe]
   • Debugger="notepad.exe"

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\msconfig.exe]
   • Debugger="notepad.exe"

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\regedit.exe]
   • Debugger="notepad.exe"

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\AVG Free.exe]
   • Debugger="notepad.exe"

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\regedt32.exe]
   • Debugger="notepad.exe"

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\RegistryEditor.exe]
   • Debugger="notepad.exe"

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\setup.exe]
   • Debugger="notepad.exe"

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\setup32.exe]
   • Debugger="notepad.exe"

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\AVG 7.5.exe]
   • Debugger="notepad.exe"

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\rstrui.exe]
   • Debugger="notepad.exe"

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\PCMAV.exe]
   • Debugger="notepad.exe"

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\PCMAV-CLN.exe]
   • Debugger="notepad.exe"

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\PCMAV-RTP.exe]
   • Debugger="notepad.exe"

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\ANSAV.exe]
   • Debugger="notepad.exe"

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\AVG.exe]
   • Debugger="notepad.exe"

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\run.exe]
   • Debugger="notepad.exe"

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\avgw.exe]
   • Debugger="notepad.exe"

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\AVG Free Edition.exe]
   • Debugger="notepad.exe"

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\AVG Free Edition Test Centre.exe]
   • Debugger="notepad.exe"

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\Avg Free Control Center.exe]
   • Debugger="notepad.exe"

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\vbren.exe]
   • Debugger="notepad.exe"

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\Kaspersky.exe]
   • Debugger="notepad.exe"

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\Kaspersky 6.0.2.exe]
   • Debugger="notepad.exe"

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\PC Tools.exe]
   • Debugger="notepad.exe"

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\AVAST.exe]
   • Debugger="notepad.exe"

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\CAV.exe]
   • Debugger="notepad.exe"

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\McAfee.exe]
   • Debugger="notepad.exe"

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\McAfee VirusScan.exe]
   • Debugger="notepad.exe"

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\Symantec.exe]
   • Debugger="notepad.exe"

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\Norman.exe]
   • Debugger="notepad.exe"

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\TuneUp Utilities.exe]
   • Debugger="notepad.exe"

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\TuneUp Utilities 2006.exe]
   • Debugger="notepad.exe"

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\TuneUp Utilities 2007.exe]
   • Debugger="notepad.exe"

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\Stars TuneUp Utilities.exe]
   • Debugger="notepad.exe"

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\Fix the BRONTOK.exe]
   • Debugger="notepad.exe"

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\NOD32.exe]
   • Debugger="notepad.exe"

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\HijackThis.exe]
   • Debugger="notepad.exe"

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\hijack.exe]
   • Debugger="notepad.exe"

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\navw32.exe]
   • Debugger="notepad.exe"

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\griso.exe]
   • Debugger="notepad.exe"

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\procexp.exe]
   • Debugger="notepad.exe"

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\avp.exe]
   • Debugger="notepad.exe"

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\samdAV 3.3.exe]
   • Debugger="notepad.exe"

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\samdAV 3.2.exe]
   • Debugger="notepad.exe"

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\smadAV.exe]
   • Debugger="notepad.exe"

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\
   Avira Antivir PersonalEdition Classic.exe]
   • Debugger="notepad.exe"

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\avcenter.exe]
   • Debugger="notepad.exe"

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\AntiVir.exe]
   • Debugger="notepad.exe"

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\Avira.exe]
   • Debugger="notepad.exe"

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\procmon.exe]
   • Debugger="notepad.exe"

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\filemon.exe]
   • Debugger="notepad.exe"

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\DiskCleaner.exe]
   • Debugger="notepad.exe"

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\RegistryCleaner.exe]
   • Debugger="notepad.exe"

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\StarUpManager.exe]
   • Debugger="notepad.exe"

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\TuneUp RescueCenter.exe]
   • Debugger="notepad.exe"

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\RescueCenter.exe]
   • Debugger="notepad.exe"

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\TuneUp RegistryEditor.exe]
   • Debugger="notepad.exe"

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\avgcc.exe]
   • Debugger="notepad.exe"

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\VPTray.exe]
   • Debugger="notepad.exe"

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\VPDN_LU.exe]
   • Debugger="notepad.exe"

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\VPC32.exe]
   • Debugger="notepad.exe"

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\TweakUI for Windows XP.exe]
   • Debugger="notepad.exe"

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\TweakUI.exe]
   • Debugger="notepad.exe"

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\MSConfig CleanUp.exe]
   • Debugger="notepad.exe"

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\CCleaner.exe]
   • Debugger="notepad.exe"

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\Itegrator.exe]
   • Debugger="notepad.exe"



会更改以下注册表项:

– [HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer]
   新值:
   • NoDriveTypeAutoRun=dword:00000000
   • NoFind=dword:00000001
   • NoFolderOptions=dword:00000001
   • NoRun=dword:00000001
   • NoViewContextMenu=dword:00000001

– [HKCR\VBEFile\DefaultIcon]
   新值:
   • (Default)=shell32.dll,-50

– [HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced]
   旧值:
   • Hidden= %用户定义的设置%
     HideFileExt= %用户定义的设置%
     SuperHidden= %用户定义的设置%
   新值:
   • Hidden=dword:00000000
     HideFileExt=dword:00000001
     SuperHidden=dword:00000000

– [HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System]
   旧值:
   • DisableRegistryTools= %用户定义的设置%
     DisableTaskMgr= %用户定义的设置%
   新值:
   • DisableRegistryTools=dword:00000001
     DisableTaskMgr=dword:00000001

 文件详细信息 编程语言:
该恶意软件程序是用 Visual Basic 编写的。


运行时压缩程序:
为了提高检测难度以及减小文件,它已使用运行时压缩程序进行压缩。

Açıklamayı yerleştiren Monica Ghitun tarihinde 9 Kasım 2007 Cuma
Açıklamayı güncelleyen: Monica Ghitun tarihinde 9 Kasım 2007 Cuma

Geri . . . .
https:// Bu pencere güvenlik amacıyla şifrelenmiştir.