Virus.Win32.INDUC.A.orig

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

It adds infection markers to files.

As of this writing, the said sites are inaccessible.

Arrival Details

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

Installation

This Virus drops the following files:

• %Application Data%\APMV\APMV.exe.id - Victim ID
• %Application Data%\APMV\APMV.exe.flag - Marker
• %Application Data%\APMV\APMV.exe.dat - Timestamp

(Note: %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Roaming on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)

It drops the following copies of itself into the affected system:

• %Application Data%\APMV\APMV.exe
• %User Temp%\{Random Capital Letters}

(Note: %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Roaming on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).. %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local\Temp on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)

It creates the following folders:

• %Application Data%\APMV

(Note: %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Roaming on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)

It terminates itself if it finds the following processes in the affected system's memory:

• taskmgr.exe

Autostart Technique

This Virus drops the following shortcut pointing to its copy in the User Startup folder to enable its automatic execution at every system startup:

• %All Users Profile%\APMV.lnk

(Note: %All Users Profile% is the common user's profile folder, which is usually C:\Documents and Settings\All Users on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\ProgramData on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit). )

Other System Modifications

This Virus deletes the following files:

• %Windows%\desk.cpl
• %Windows%\sxs.dll
• %Windows%\xpsp2res.dll
• %Windows%\fastsmell.exe
• %System%\ntos.exe
• If it has the following filenames:
  • rasadhlp.dll
  • mcenspc.dll
  • msvcrt57.dll
  • Kbrero.exe
  • Ubrery.exe
  • zeiaiz.exe
  • bsysmgr.exe.
  • enfcspl.dll
  • setupapi.dll
  • sdra64.exe
  • twex.exe

(Note: %Windows% is the Windows folder, where it usually is C:\Windows on all Windows operating system versions.. %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.)

File Infection

This Virus infects the following file types:

• .EXE Files

It adds infection markers to files.

Download Routine

This Virus accesses the following websites to download files:

• http://www.{BLOCKED}et.com/tabla/uploads/av-33970.jpg
• http://forum.{BLOCKED}a.com/data/avatars/l/49/49632.jpg
• http://forum.{BLOCKED}s.vn/image.php?u=696

As of this writing, the said sites are inaccessible.

Other Details

This Virus does the following:

• It accepts the following arguments:
  • -autorun → Perform its infection routines
• If run without arguments it will create its autostart and delete the listed files. The deleted files will be deleted after a reboot has been performed.
• It infects files by:
  • Encoding the target file. Appending it to its own code and then writing it back to its target file.
• It adds the following to its infected files as infection marker:
  • -=supernatural=-
• It avoids infecting files from drives:
  • Where the drive type is CD-ROM, UNKNOWN or NO ROOT DRIVE.
  • Where System Volume Infomation exists.
• If Delphi is installed in the machine:
  • It will look for the following files:
    • bin\dcc32.exe
    • lib\sysinit.dcu
    • rtl\sys\system.pas
  • If found it will drop the following file (If it doesnt exist):
    • {source directory}\Defines.inc → contains malicious code in array form
  • It writes code to rtl\sys\sysinit.pas to load the malicious code from Defines.inc.
  • Then it will execute the following command to compile Delphi libraries with inserted malicious code:
    • {Delphi installation path}\­bin\­dcc32.exe –Q &{Delphi installation path}\­rtl\­sys\­System.pas& –M –Y –Z -$D- -0