TROJ_DROPPER.DAX
Trojan Horse (Symantec); Trojan.Win32.Generic!BT (Sunbelt)
Windows 2000, Windows XP, Windows Server 2003
Threat Type: Trojan
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
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.
TECHNICAL DETAILS
1,182,720 bytes
EXE
No
25 Oct 2012
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 creates the following folders:
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\SDPlugins
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData
- %User Temp%\Adobe
(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, XP, and Server 2003.)
Other System Modifications
This Trojan adds the following registry keys:
HKEY_CURRENT_USER\Software\Adobe\
Adobe Acrobat\10.0
HKEY_CURRENT_USER\Software\Adobe\
Adobe Synchronizer\10.0
HKEY_LOCAL_MACHINE\System\Acrobatbrokerserverdispatchercpp789
HKEY_CURRENT_USER\Software\Adobe\
Acrobat Reader\10.0\Installer\
Migrated
Dropping Routine
This Trojan drops the following files:
- %User Temp%\DX1.tmp
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\DXAppCustom.bin
- %User Temp%\DX2.tmp
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\package2.ini
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\glass_controller.png
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\Alpha Dista Icon 08.ico
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\Alpha Dista Icon 07.ico
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\glass_controller_button.png
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\RTM_Navigation_Start.wav
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\glass_controller_button_over.png
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\vista_orb.png
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\Command Menu.png
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\CMD_SEC_Button_norm.png
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\CMD_SEC_Button_over.png
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\CMD_PWR_Button_norm.png
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\CMD_PWR_Button_over.png
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\CMD_RUN_Button_Norm.png
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\CMD_RUN_Button_Over.png
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\Nav Base.png
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\Favouries Norm.png
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\Favouries Over.png
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\My Comp Norm.png
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\My Comp Over.png
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\Settings Norm.png
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\Settings Over.png
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\Apps Norm.png
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\Apps Over.png
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\CloseBtnSmall.png
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\SmallHueBtn.png
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\shadow clock_back.png
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\hub2.png
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\{1F23EDE8-073F-4A5C-9394-E5AE67F5034B}.dxperf3
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\{9DE353A1-8B21-4539-9FFF-1815742050E5}.dxperf3
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\{4918A7BB-AE49-4B8F-A42F-9FF61A73655C}.DXScript2
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\{F4553F2B-91F3-4989-A609-3A3A4203CB81}.DXScript2
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\SDAnalogClock2-38936496.ini
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\SDAnalogClock2-38936528.ini
- %User Temp%\DX3.tmp
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\SDPlugins\DXPerf3.dll
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\SDPlugins\DXTrash.dll
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\SDPlugins\DXAxHost.app
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\SDPlugins\SDAnalogClock2.dll
(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, XP, and Server 2003.)
This report is generated via an automated analysis system.
SOLUTION
9.300
Step 1
For Windows XP and Windows Server 2003 users, before doing any scans, please make sure you disable System Restore to allow full scanning of your computer.
Step 2
Delete this registry key
Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.
- In HKEY_CURRENT_USER\Software\Adobe\Adobe Acrobat
- 10.0
- In HKEY_CURRENT_USER\Software\Adobe\Adobe Synchronizer
- 10.0
- In HKEY_LOCAL_MACHINE\System
- Acrobatbrokerserverdispatchercpp789
- In HKEY_CURRENT_USER\Software\Adobe\Acrobat Reader\10.0\Installer
- Migrated
Step 3
Search and delete these files
- %User Temp%\DX1.tmp
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\DXAppCustom.bin
- %User Temp%\DX2.tmp
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\package2.ini
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\glass_controller.png
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\Alpha Dista Icon 08.ico
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\Alpha Dista Icon 07.ico
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\glass_controller_button.png
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\RTM_Navigation_Start.wav
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\glass_controller_button_over.png
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\vista_orb.png
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\Command Menu.png
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\CMD_SEC_Button_norm.png
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\CMD_SEC_Button_over.png
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\CMD_PWR_Button_norm.png
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\CMD_PWR_Button_over.png
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\CMD_RUN_Button_Norm.png
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\CMD_RUN_Button_Over.png
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\Nav Base.png
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\Favouries Norm.png
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\Favouries Over.png
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\My Comp Norm.png
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\My Comp Over.png
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\Settings Norm.png
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\Settings Over.png
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\Apps Norm.png
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\Apps Over.png
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\CloseBtnSmall.png
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\SmallHueBtn.png
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\shadow clock_back.png
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\hub2.png
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\{1F23EDE8-073F-4A5C-9394-E5AE67F5034B}.dxperf3
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\{9DE353A1-8B21-4539-9FFF-1815742050E5}.dxperf3
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\{4918A7BB-AE49-4B8F-A42F-9FF61A73655C}.DXScript2
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\{F4553F2B-91F3-4989-A609-3A3A4203CB81}.DXScript2
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\SDAnalogClock2-38936496.ini
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData\SDAnalogClock2-38936528.ini
- %User Temp%\DX3.tmp
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\SDPlugins\DXPerf3.dll
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\SDPlugins\DXTrash.dll
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\SDPlugins\DXAxHost.app
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\SDPlugins\SDAnalogClock2.dll
Step 4
Search and delete these folders
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\SDPlugins
- %User Temp%\{26E26B78-488E-4EBA-AB45-CE0F48F6875D}\AppData
- %User Temp%\Adobe
Step 5
Scan your computer with your Trend Micro product to delete files detected as TROJ_DROPPER.DAX. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check this Knowledge Base page for more information.
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