WORM_LDPINCH.SS

This worm arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

It drops an AUTORUN.INF file to automatically execute the copies it drops when a user accesses the drives of an affected system.

It executes the dropped file(s). As a result, malicious routines of the dropped files are exhibited on the affected system.

It steals email account information.

Arrival Details

This worm arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Autostart Technique

This worm adds the following registry entries to enable its automatic execution at every system startup:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
sisis = "%System%\sisis.exe"

Other System Modifications

This worm creates the following registry entry(ies) to bypass Windows Firewall:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\SharedAccess\Parameters\
FirewallPolicy\StandardProfile\AuthorizedApplications\
List
{malware path}\{malware name} = "{malware path}\{malware name}:*:Enabled:Enabled"

Propagation

This worm drops the following copy(ies) of itself in all removable drives:

• autorun.exe

It drops an AUTORUN.INF file to automatically execute the copies it drops when a user accesses the drives of an affected system.

The said .INF file contains the following strings:

[autorun]
open=
shell\open=Explore
shell\open\Command=.\autorun.exe explore
shell\open\Default=1

Dropping Routine

This worm drops the following files:

• %System%\sisis.exe - detected as TROJ_LDPINCH.SME

(Note: %System% is the Windows system folder, which is usually C:\Windows\System on Windows 98 and ME, C:\WINNT\System32 on Windows NT and 2000, or C:\Windows\System32 on Windows XP and Server 2003.)

It executes the dropped file(s). As a result, malicious routines of the dropped files are exhibited on the affected system.

Information Theft

This worm steals email account information.

Stolen Information

This worm sends the gathered information via HTTP POST to the following URL:

• http://{BLOCKED}10.78/pinch/gate.php

NOTES:

This worm steals sensitive information such as user names and passwords from the following applications:

• Becky! Internet Mail
• CoffeeCup
• CuteFTP
• Eudora
• FileZilla
• FlashFXP
• Hotmail
• ICQ
• Internet Explorer
• Megaupload
• Miranda
• Mozilla Firefox
• Mozilla Thunderbird
• Opera
• Outlook
• Punto Switcher
• QIP
• RapGet
• Rapidshare
• The Bat!
• Total Commander
• Trillian
• USDownloader

It obtains ensitive information from the aforementioned applications by searching files and/or registries connected to them:

• Becky! Internet Mail
  • Gets the installation folder from the registry HKEY_CURRENT_USER\Software\RimArts\B2\Settings\DataDir
  • Collects the following data in the file Mailbox.ini:
    • Mail server
    • User ID
    • Password
    • Mail address
• Eudora
  • Searches for the file {folder location}\Qualcomm\Eudora\Eudora.ini and collects the following data:
    • Login name
    • POP server
    • Real name
    • Return address
    • Save password text
    • Settings
• Outlook
  • Searches registry key HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook
  • Gets the following data from said registry key:
    • password
    • server
    • user name
• The Bat!
  • Searches and collects data from the following files:
    • account.cfg
    • account.cfn
  • Locates the files above by searching the following folders:
    • %Application Data%\BatMail
    • %Application Data%\The Bat!
    • folders stated in the registry key HKEY_CURRENT_USER\SOFTWARE\RIT\The Bat!
• Thunderbird
  • Searches for the following files in the Thunderbird folder:
    • prefs.js
    • profiles.ini
    • signons.txt
  • Collects the following data:
    • Login saved
    • Password saved
    • Path
    • Profile
• CoffeeCup
  • Collects information from the following registry keys:
    • HKEY_CURRENT_USER\Software\CoffeeCup
    • HKEY_CURRENT_USER\Software\Internet\Profiles
  • Data collected are the following:
    • Host name
    • Item name
    • Password
    • Port
    • User name
• CuteFTP
  • Collects information from the following files:
    • sm.dat
    • smdata.dat
    • tree.dat
  • Collects information from the following folders:
    • CuteFTP
    • GlobalSCAPE\CuteFTP
    • {folder location}\cutftp32.exe
• Filezilla
  • Collects information from the following files:
    • \FileZilla\sitemanager.xml
    • \FileZilla.xml
  • Collects information from the folder location that is in HKEY_CURRENT_USER\Software\FileZilla\Install_Dir
• FlashFXP
  • Collects information from the following files:
    • quick.dat
    • sites.dat
  • Collects information from the folder location that is in HKEY_CURRENT_USER\SOFTWARE\FlashFXP\3\Install Path
• Total Commander
  • Collects information from the following files:
    • ftp.ini
    • wcx_ftp.ini
  • Collects information from the following folders:
    • Total Commander
    • Total Commander XP
    • {folder location}\Totalcmd.exe
  • Collects information from the folders found in the following regstry keys:
    • HKEY_CURRENT_USER\Software\Ghisler\Windows Commander
    • HKEY_CURRENT_USER\Software\Ghisler\Total Commander
  • Information collected are as follows:
    • directory
    • host
    • method
    • password
    • user name
• Opera
  • Collects the following information from the file {folder loaction}\Mail\accounts.ini:
    • Email
    • Incoming user name
    • Incoming server name
    • Incoming password
  • Collects information from the folder found in the registry key HKEY_CURRENT_USER\Software\Opera
• ICQ
  • Collects information from the following registries:
    • HKEY_CURRENT_USER\SOFTWARE\Mirabilis\ICQ\NewOwners\MainLocation
    • HKEY_CURRENT_USER\SOFTWARE\Mirabilis\ICQ\DefaultPrefs\Password
• Miranda
  • Collects passwords from the folders where miranda32.exe is located
  • Collects information from the folders identified in the following registry keys:
    • HKEY_CURRENT_USER\SOFTWARE\Miranda
    • HKEY_CURRENT_USER\Software\MirM\Install_Dir
• QIP
  • Collects information from the file config.ini from the folders:
    • QIP
    • Q2005
    • QIP2005
    • {folder location}\qip.exe
  • Collects the following information:
    • users
    • passwords
    • NPass
• Trillian
  • Collects information from the following files:
    • aim.ini
    • users\global\profiles.ini
• Punto Switcher
  • Collects information from the files diary.dat
• RapGet
  • Gets the folder location of the file rapget.exe then locates the following files to collect their contents:
    • links.dat
    • rapget.ini
• USDownloader
  • Gets the folder location of the file USDownloader.exe then locates the following files to collect their contents:
    • USDownloader.lst

For the file-sharing applications, it collects the following files:

• Depositfilesl.txt
• Megauploadl.txt
• Rapidsharel.txt

It collects the following information:

• alternate shell
• full address
• session
• user name