Home Malware Programs Trojans Trojan.Mdropper.AC

Trojan.Mdropper.AC

Posted: February 25, 2009

Trojan.Mdropper.AC is a Trojan designed to download and execute malware onto your computer system. Trojan.Mdropper.AC usually propagates itself and infects your computer using Microsoft Excel Unspecified Remote Code Execution Vulnerability (BID 33870). Trojan.Mdropper.AC has the ability to create a rundll.exe executable file to download the additional malware and execute onto your infected computer.

File System Modifications

  • The following files were created in the system:
    # File Name
    1 %Documents and Settings%\All Users\Desktop\Personal Antivirus.lnk
    2 %Documents and Settings%\All Users\Start Menu\Programs\Personal Antivirus
    3 %Documents and Settings%\All Users\Start Menu\Programs\Personal Antivirus\Personal Antivirus Home Page.lnk
    4 %Documents and Settings%\All Users\Start Menu\Programs\Personal Antivirus\Personal Antivirus.lnk
    5 %Documents and Settings%\All Users\Start Menu\Programs\Personal Antivirus\Purchase License.lnk
    6 %Program Files%\Personal Antivirus
    7 %Program Files%\Personal Antivirus\activate.ico
    8 %Program Files%\Personal Antivirus\db
    9 %Program Files%\Personal Antivirus\db\DBInfo.ver
    10 %Program Files%\Personal Antivirus\db\ia080614.db
    11 %Program Files%\Personal Antivirus\db\ia080618x.db
    12 %Program Files%\Personal Antivirus\Explorer.ico
    13 %Program Files%\Personal Antivirus\Languages
    14 %Program Files%\Personal Antivirus\Languages\IAEs.lng
    15 %Program Files%\Personal Antivirus\Languages\IAFr.lng
    16 %Program Files%\Personal Antivirus\Languages\IAGer.lng
    17 %Program Files%\Personal Antivirus\Languages\IAIt.lng
    18 %Program Files%\Personal Antivirus\PerAvir.exe
    19 %Program Files%\Personal Antivirus\unins000.dat
    20 %Program Files%\Personal Antivirus\uninstall.ico
    21 %Program Files%\Personal Antivirus\working.log
    22 %Temp%\rundll.exe
    23 %UserProfile%\Application Data\Microsoft\Internet Explorer\Quick Launch\Personal Antivirus.lnk
    24 %UserProfile%\Application Data\Microsoft\Windows\winlogon.exe
    25 %UserProfile%\Application Data\Personal Antivirus
    26 %UserProfile%\Application Data\Personal Antivirus\db
    27 %UserProfile%\Application Data\Personal Antivirus\db\config.cfg
    28 %UserProfile%\Application Data\Personal Antivirus\db\Timeout.inf
    29 %UserProfile%\Application Data\Personal Antivirus\db\Urls.inf
    30 %UserProfile%\Application Data\Personal Antivirus\settings.ini
    31 %UserProfile%\Application Data\Personal Antivirus\uill.ini
    32 %UserProfile%\Application Data\Personal Antivirus\unins000.exe
    33 %UserProfile%\Application Data\Personal Antivirus\Uninstall Personal Antivirus.lnk
    34 %UserProfile%\Local Settings\Application Data\Microsoft\Internet Explorer\iGSh.png
    35 %UserProfile%\Local Settings\Application Data\Microsoft\Internet Explorer\iMSh.png
    36 %UserProfile%\Local Settings\Application Data\Microsoft\Internet Explorer\iPSh.png
    37 %UserProfile%\Local Settings\Application Data\Microsoft\Internet Explorer\iv.exe
    38 %UserProfile%\Local Settings\Application Data\Microsoft\Windows\log.txt
    39 %UserProfile%\Local Settings\Application Data\Microsoft\Windows\pguard.ini
    40 %UserProfile%\Local Settings\Application Data\Microsoft\Windows\services.exe
    41 %WINDOWS%\system32\log.txt

Registry Modifications

  • The following newly produced Registry Values are:
    HKEY..\..\..\..{Subkeys}HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer "PrS"HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run "Personal Antivirus"HKEY..\..\..\..{RegistryKeys}HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_ITGRDENGINEHKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\ITGrdEngineHKEY_LOCAL_MACHINE\Software\[APPLICATION]\Microsoft\Windows\CurrentVersion\Uninstall..{Uninstaller}Personal Antivirus_is1
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