Internet Security Threats

Trojan-PSW.Win32.LdPinch.bik

RISK LEVEL:2

This Trojan is designed to steal confidential information (user passwords).It is designed to steal a range of confidential information.

It is a Windows PE EXE file. It is 25,600 bytes in size. It is packed usingUPX. The unpacked file is approximately 250KB in size. It is written in Assembler.

Once launched, the Trojan adds the following entry to the system registry:

The Trojan constantly searches for windows of the following classes: “AVP.AlertDialog”,“AVP.AhAppChangedDialog”, “AVP.AhLearnDialog”. Withinthese windows it will emulate clicking on the following buttons: "Razreshit[‘Allow' in Russian]”, “Allow”, “Skip”,“Sozdat’ pravilo [‘Create Rule’ in Russian]“,“Apply to all”, “Remember this action”. It will closewindows of the class “AVP.Product_Notification”.

The Trojan constantly searches for windows where the title contains the followingstrings: “Kaspersky Anti-Hacker - Sozdat’ pravilo dlya [Russianversion of following string]" or "Kaspersky Anti-Hacker - Create a rule for"and emulates clicking on the following button: "Razreshit' odnokratno [Russianversion of following string]“ or “Allow Once”.

The Trojan also emulates clicking on “OK” in windows with thefollowing titles:

The Trojan harvests information about the hard disk, how much free space remainson the disk, the current user’s account, the network name of the victimmachine, the version of the operating syste, the type of processor, screen options,programs installed on the computer, active processes and dial-up connections.

The Trojan searches for the following files:

account.cfgaccount.cfn

In the following folders:

It also searches folders indicated in the following registry key parametersfor these files:

It will harvest the contents of these files.

The Trojan gets the path to the Mirabilis ICQ client (if installed), searchesfor files with a DAT extension and harvests their contents. It gets the following registry key values:

[HKCU\Software\Mirabilis\ICQ\NewOwners][HKLM\Software\Mirabilis\ICQ\NewOwners] 

The Trojan reads the path to the Miranda client (if installed) from the followingregistry section:

[HKLM\Software\Miranda]Install_Dir 

searches it for files with a DAT extension and harvest their contents.

The Trojan also searches the following registry key’s parameters:

[HKCU\Software\Microsoft\Windows\ShellNoRoam\MUICache] 

for parameters called RQ.exe and RAT.exe. It gets the value for these files(if found) and uses it to search for a file called andrq.ini.

If it does not find these files, it gets the value from the following registrykey:

 [HKLM\Software\Microsoft\Windows\CurrentVersion\Uninstall\RQ]UninstallString 

and uses it to search for a file called andrq.ini.

The Trojan gets the path to the file with the Trillian client (if installed)from the following registry key:

 [HKLM\Software\Microsoft\Windows\CurrentVersion\Uninstall\Trillian] 

It reads the contents of users\global\profiles.ini, and extracts informationabout the current user profile. It also reads the user name and password fromaim.ini.

The Trojan gets the path to Total Commander (if installed) from the followingregistry keys:

The Trojan searches this folder, and also %WinDir% for a file called wcx_ftp.inior ftp.ini, which it will search for the following parameters and get theirvalues:

hostusernamepassworddirectorymethod 

The Trojan gets the path to the folder from the following registry key:

 [HKCU\Software\RimArts\B2\Settings], 

It searches for a file called Mailbox.ini, searches for the following parameters,and gets their values:

UserIDMailAddressMailServerPassWd 

The Trojan gets a list of entries in the address book, and passwords to MicrosoftOutlook accounts from the following registry key:

The Trojan gets the patch to CuteFTP and CuteFTP Professional (if installed)and searches them for the following files:

sm.dattree.datsmdata.dat 

It will harvest the contents of these files.

The Trojan gets the values of the following paramenters from %WinDir%\edialer.ini:

LoginSavedPasswordSaved 

The Trojan gets a list of keys in [HKCU\Software\Far\Plugins\FTP\Hosts] andgets the values of the following parameters:

HostNameUserPasswordDescription

The Trojan reads the path to the Opera client (if installed) and searchesboth its folder, and the patch shown below:

 %Documents and Settings%\<name of current user>\Application Data\Opera

for a file called \profile\wand.dat. It harvests the contents of this file.

The Trojan gets the path to Mozilla (if installed) from the system registry,and harvests all files in the Profiles folder.

The Trojan gets the path to QIP (if installed) from the following registrykey:

It searchs the program folder, the subfolder Users and all folders in thesubfolder for Config.ini. It gets the values for:

PasswordNPass 

The Trojan reads the contents of %Documents and Settings%\<user name>\ApplicationData\Thunderbird\Profiles.ini and extracts a path to profiles, where it willsearch for files called signons.txt and prefs.js, and harvest their contents.

The Trojan gets the values of all subkeys of the following registry key:

[HKCU\Software\Mail.Ru\Agent\mra_logins] 

The Trojan reads the following parameters from %Documents and Settings%\<èìÿ ïîëüçîâàòåëÿ>\ApplicationData\Qualcomm\Eudora\Eudora.ini:

RealNameReturnAddressPopServerLoginNameSavePasswordText 

The Trojan reads the path to Punto Switcher (if installed) from the followingregistry key:

[HKCU\Software\Punto Switcher] 

and reads the contents of "diary.dat”.

It reads the value of %Documents and Settings%\<name of current user>\ApplicationData\gaim\accounts.xml.

The Trojan harvests the contents of files located in the Firefox profiles.

The Trojan gets the path to the folder with FileZilla (if installed) fromthe following registry key:

[HKCU\Software\FileZilla]Install_Dir 

And harvests the contents of FileZilla.xml.

The Trojan gets the path to the folder with FlashFXP (if installed) and harveststhe contents of Sites.dat.

It harvests the contents of the following files:

%WinDir%\VD3User.dat%WinDir%\Vd3main.dat,

It also harvests the contents of the following files:

It harvests the following values:

HostNamePortUsernamePasswordItemName 

from the following registry subkey:

[HKCU\Software\CoffeeCup Software\Internet\Profiles] 

The Trojan reads the value of the following registry key parameter

and uses it to search for the files listed below:

USDownloader.lstDepositfilesl.txtMegauploadl.txtRapidsharel.txt 

It harvests the contents of these files.

The Trojan reads the value of the following registry key parameter:

and uses it to search for the files listed below:

rapget.inilinks.dat

It harvests the contents of these files.

The Trojan searches %Documents and Settings%\<user name>\My Documentsfor files with an .rdp extension and harvests their contents.

The Trojan sends all the data harvested to spartak***@mail.ru, the remotemalicious user's email.

If your computer does not have an up-to-date antivirus, or does not have anantivirus solution at all, follow the instructions below to delete the maliciousprogram:

1. Delete the Trojan process.
2. Delete the original Trojan file (the location will depend onhow the program originally penetrated the victim machine).
3. Update your antivirus databases and perform a full scan of thecomputer (download a trial version of Kaspersky Anti-Virus).