Worm.Win32.Agent.t分析
出處:安天CERT
檔案 MD5: C4BFC29229607CBEA877CBC40EB5D098
檔案長度: 脫殼前52,736
位元組,脫殼後145,920 位元組
感染系統: Win98以上版本
開發工具: Borland C++ 1999
加殼類型: PECompact 2.x -> Jeremy Collake
命名對照: 趨勢[TROJ_DELF.JIP]SOPHOS[Mal/Behav-097]
NOD32[a variant of Win32/Agent.NAU worm]IKARUS[Worm.Win32.Agent.t]
AVG[Agent.FTJ]AVAST[Win32:Delf-DTM [Wrm]]
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行為分析:
本地行為:
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1、病毒件運行後.會衍生以下檔案: 字串2
%WinDir%\112.exe
%WinDir%\121.exe
%WinDir%\123.exe
%WinDir%\444.exe
%WinDir%\817.exe
%WinDir%\concmd.dll
%WinDir%\netcom.dll
%System32%\449.exe
%WinDir%\Temp\~myC.tmp
%System32%\dirvers\2dfgbu9.sys
%System32%\dirvers\acpidisk.sys
%System32%\dirvers\mjaife1jj.sys
%Documents and Settings%\當前用戶名\LOCALS~1\Temp\install.exe 字串6
2、新增註冊表: 字串2
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\windows_0\]
註冊表值: " Description "
字元串:" Network Connections Management "
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\windows_0\]
註冊表值: " DisplayName "
字元串:"Windows Accounts Driver"
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\windows_0\]
註冊表值: "ImagePath "
字元串:" C:\WINDOWS\System32\449.exe "
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[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\mjaife1jj\]
註冊.表值: " DisplayName "
字元串:"mjaife1jj"
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\windows_0\]
註冊表值: "ImagePath "
字元串:" C:\WINDOWS\System32\drivers\mjaife1jj.sys"
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[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\windows_0\]
註冊表值: " DisplayName "
字元串:"acpidisk"
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\windows_0\]
註冊表值: "ImagePath "
字元串:" C:\WINDOWS\System32\drivers\acpidisk.sys "
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[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\windows_0\]
註冊表值: "2dfgbu9System Bus Extender"
字元串:"acpidisk"
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\windows_0\]
註冊表.值: "ImagePath "
字元串: " C:\WINDOWS\System32\drivers\2dfgbu9.sys" 字串9
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run\]
註冊表值: " MSetup "
字元串: " C:\DOCUME~1\當前用戶名\LOCALS~1\Temp\install.exe " 字串1
3、修改註冊表
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[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit]
新建鍵值:字串:" C:\WINDOWS\system32\userinit.exe,c:\WINDOWS\病毒副本名.exe "
原鍵值:字串:"''C:\WINDOWS\system32\userinit.exe" 字串2
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\Folder\Hidden\SHOWALL\CheckedValue]
新建鍵值:字串:" 0"
原.鍵值:字串:"''1"
類型:DWORD 字串3
[HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders\Cache]
新建鍵.值:字串:''C:\Documents and Settings
\當前用戶名\Local Settings\Temporary Internet Files''
原鍵值:字串:''C:\WINDOWS\system32\config\systemprofile
\Local Settings\Temporary Internet Files ''字串7
[HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders\Cache]
新建鍵值:字串:"C:\Documents and Settings\當前用戶名\Cookies"
原鍵值:字串:"C:\WINDOWS\system32\config\systemprofile\Cookies" 字串2
[HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders\History]
新建鍵值:字串:"C:\Documents and Settings\當前用戶名\Local Settings\History"
原.鍵值:字串:"C:\WINDOWS\system32\config\systemprofile\Local Settings\History " 字串3
4、刪除注.冊表鍵值 字串4
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\]
註冊表值:" MSConfig "
類型:Stirng
字元串:" C:\WINDOWS\PCHealth\HelpCtr\Binaries\MSConfig.exe /auto "
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網路行為:
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協定:TCP
域名或IP位址:
218.61.15.**連線埠: 7000
218.61.19.***連線埠: 7000
61.176.194.***連線埠: 7000
61.176.204.***連線埠: 7000
61.176.22.2.***連線埠: 7000
2、連線.地址cha.onniro.cn(221.8.74.***)/text/****.txt病毒下載地址繼而下載病毒體:
協定:TCP
連線埠:80
hxxp://www.qqxi***ng.cn/svchost.exe
hxxp://www.51**t.com/haohao.exe
hxxp://huimie.xi**.net/qqqyyy.exe
hxxp://www.jzm***.com(61.176.195.***)/m/xy.exe
hxxp://www.48**.com(221.8.74.***)/rar/my_70136.rar
hxxp://qqqyyy2.33**.org(218.61.18.**)/Server.exe
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hxxp://www.ad99**.com(218.61.18.**)/qqqyyy.exe
hxxp://www.48**.com(221.8.74.***)/rar/socvher.rar
hxxp://www.4***.com/rar/my_70136.rar
hxxp://www.tud***.net(222.169.224.**)/ad/bd2.rar
hxxp://www.tud***.net(222.169.224.**)/ad/bd4.rar
hxxp://www.tud***.net(222.169.224.**)/ad/bd6.rar
hxxp://www.tud***.net(222.169.224.**)/ad/bd8.rar 字串9
註: %Windir% WINDODWS所在目錄
%ProgramFiles% 系統程式默認
安裝目錄%HomeDrive% 當前啟動的系統的所在分區
%Documents and Settings% 當前
用戶文檔根目錄
%Temp% \Documents and Settings
\當前用戶\Local Settings\Temp
%System32% 系統的 System32資料夾
Windows2000/NT中默認的安裝路徑是C:\Winnt\System32
windows95/98/me中默認的安裝路徑是C:\Windows\System
windowsXP中默認的安裝路徑是C:\Windows\System32
清除方案:
1 、使用安天
木馬防線可.徹底清除此病毒 ( 推薦 )
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2 、手工清除請按照行為分析刪除對應檔案,恢復相關係統設定。
112.exe
121.exe
123.exe
444.exe
817.exe
449.exe
(2)恢復病毒修改的註冊.表項目,刪除病毒添加的
註冊表項:
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\Folder\Hidden\SHOWALL\CheckedValue]
新建鍵值:字串:" 0"
原鍵值:字串:"''1"
類型:DWORD
(3)刪除病毒檔案:
%WinDir%\112.exe
%WinDir%\121.exe
%WinDir%\123.exe
%WinDir%\444.exe
%WinDir%\817.exe
%WinDir%\concmd.dll
%WinDir%\netcom.dll
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%System32%\449.exe
%WinDir%\Temp\~myC.tmp
%System32%\dirvers\2dfgbu9.sys
%System32%\dirvers\acpidisk.sys
%System32%\dirvers\mjaife1jj.sys
%Documents and Settings%\當前用戶名\LOCALS~1
\Temp\install.exe