Trojan.Win32.DLOADR.TIOIBEIB

This Trojan 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 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 adds the following processes:

• "%System%\WScript.exe" "%User Temp%\RarSFX0\install1.vbs"
• %User Temp%\RarSFX0\install1.vbs
• setup1.bat
• %System%\reg.exe REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "Windows Updates 1" /t REG_SZ /d ""%System Root%\Program Files\RDP Wrapper"\Updates1.vbs" /f
• %System Root%\Program Files\RDP Wrapper\Updates1.vbs "%System Root%\Program Files\RDP Wrapper"\Updates1.vbs
• "%System%\WScript.exe" "%System Root%\Program Files\RDP Wrapper\Updates1.vbs"
• %System Root%\Program Files\RDP Wrapper\Updates1.vbs
• "%System%\WScript.exe" "%System Root%\Program Files\RDP Wrapper\start1.vbs"
• start1.vbs
• "%System Root%\Program Files\RDP Wrapper\start1.bat"
• start1.bat
• fsutil dirty query %System Root%
• schtasks /create /f /sc ONSTART /tn "RDP Wrapper Autoupdate" /tr "cmd.exe /C \"%System Root%\Program Files\RDP Wrapper\autoupdate.bat\" -log" /ru SYSTEM /delay 0000:10
• %Windows%\Microsoft.NET\Framework64\v4.0.30319\mscorsvw.exe
• %System%\sppsvc.exe
• %System%\svchost.exe -k LocalServiceAndNoImpersonation
• "%System Root%\Program Files\Windows Media Player\wmpnetwk.exe"
• %System%\svchost.exe -k WerSvcGroup
• %System%\WerFault.exe -u -p 2224 -s 1240
• %System%\WerFault.exe -u -p 2432 -s 204
• %System%\WerFault.exe -u -p 1352 -s 44
• %System%\WerFault.exe -u -p 2700 -s 52
• %System%\WerFault.exe -u -p 2004 -s 1224
• %System%\WerFault.exe -u -p 2568 -s 1288
• %System%\WerFault.exe -u -p 1640 -s 188
• %System%\WerFault.exe -u -p 1640 -s 196
• %System%\WerFault.exe -u -p 1640 -s 192

(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 Root% is the Windows root folder, where it usually is C:\ 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:

• %System Root%\Program Files\RDP Wrapper
• %User Temp%\RarSFX0

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

Other System Modifications

This Trojan deletes the following files:

• %Windows%\Tasks\RDP Wrapper Autoupdate.job

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

Dropping Routine

This Trojan drops the following files:

• %User Temp%\RarSFX0\start1.vbs
• %System Root%\Program Files\RDP Wrapper\start1.vbs
• %User Temp%\RarSFX0\install1.vbs
• %System Root%\Program Files\RDP Wrapper\Updates1.vbs
• %System Root%\Program Files\RDP Wrapper\setup1.bat
• %System Root%\Program Files\RDP Wrapper\install1.vbs
• %System Root%\Program Files\RDP Wrapper\autoupdate.bat
• %All Users Profile%\Microsoft\Windows\DRM\drmstore.hds
• %User Temp%\RarSFX0\Updates1.vbs
• %System Root%\Program Files\RDP Wrapper\start1.bat
• %System Root%\Program Files\RDP Wrapper\uninstall.bat
• %All Users Profile%\Microsoft\Network\Downloader\qmgr1.dat
• %All Users Profile%\Microsoft\Network\Downloader\qmgr0.dat
• %All Users Profile%\Microsoft\Windows\DRM\v3ks.sec
• %AppDataLocal%\Microsoft\Media Player\CurrentDatabase_372.wmdb

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

This report is generated via an automated analysis system.