TrojanSpy.MSIL.NEGASTEAL.KDY

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

Arrival Details

This Trojan Spy 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 Trojan Spy adds the following processes:

• schtasks.exe /Create /TN "Updates\xjZCQBWoWPwt" /XML "%User Temp%\tmp1064.tmp"
• {malware file path and name} "{path}"
• %System%\lsass.exe
• %Windows%\Microsoft.NET\Framework\v4.0.30319\mscorsvw.exe
• %System%\svchost.exe -k netsvcs
• %System%\svchost.exe -k WerSvcGroup
• %System%\sc.exe start w32time task_started
• %System%\sdclt.exe /CONFIGNOTIFICATION
• taskhost.exe SYSTEM
• %System%\wsqmcons.exe
• taskhost.exe $(Arg0)
• %System%\schtasks.exe /delete /f /TN "Microsoft\Windows\Customer Experience Improvement Program\Uploader"

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

It creates the following folders:

• %All Users Profile%\Microsoft\Windows\Sqm\Sessions
• %All Users Profile%\Microsoft\Windows\Sqm\Manifest
• %All Users Profile%\Microsoft\Windows\Sqm\Upload

(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 Trojan Spy modifies the following file(s):

• %Windows%\Prefetch\MSCORSVW.EXE-C3C515BD.pf
• %Windows%\Prefetch\TASKHOST.EXE-7238F31D.pf
• %Windows%\Prefetch\CONHOST.EXE-1F3E9D7E.pf

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

Dropping Routine

This Trojan Spy drops the following files:

• %Windows%\Prefetch\TASKHOST.EXE-7238F31D.pf
• %Application Data%\RPDy00VsyP.jpeg
• %Application Data%\CcoMyY8R9P.jpeg
• %AppDataLocal%\GDIPFONTCACHEV1.DAT
• %Windows%\Prefetch\CONHOST.EXE-1F3E9D7E.pf
• %Application Data%\D95Z88I7N0.jpeg
• %Application Data%\Ufcbw8T837.jpeg
• %Application Data%\LFBj8PpQ4A.jpeg
• %Application Data%\VoXT96t9NW.jpeg
• %Windows%\Prefetch\MSCORSVW.EXE-C3C515BD.pf
• %Application Data%\PoRd51EZmu.jpeg
• %Application Data%\YajYxWGEDJ.jpeg
• %Application Data%\xjZCQBWoWPwt.exe

(Note: %Windows% is the Windows folder, where it usually is C:\Windows on all Windows operating system versions.. %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).. %AppDataLocal% is the Local Application Data folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Application Data on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)

Other Details

This Trojan Spy connects to the following possibly malicious URL:

• http://checkip.{BLOCKED}aws.com
• http://mail.{BLOCKED}ruments.com

This report is generated via an automated analysis system.