TROJ_EXEDOT.SMX
TrojanDropper:Win32/Winbudget (Microsoft); Puper.gen.x (McAfee); Trojan Horse (Symantec); Backdoor.Win32.Bredolab.zjf (Kaspersky); BehavesLike.Win32.Malware.bsf (vs) (Sunbelt); Gen:Trojan.Heur.tmY@If!kV8e (FSecure)
Windows 2000, Windows XP, Windows Server 2003
![](/vinfo/imgFiles/legend.jpg)
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
313,280 bytes
EXE
No
22 Dec 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:
- %Program Files%\Common
(Note: %Program Files% is the default Program Files folder, usually C:\Program Files in Windows 2000, Server 2003, and XP (32-bit), Vista (32-bit), and 7 (32-bit), or C:\Program Files (x86) in Windows XP (64-bit), Vista (64-bit), and 7 (64-bit).)
Other System Modifications
This Trojan deletes the following registry keys:
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Ext\
Settings\{0CB66BA8-5E1F-4963-93D1-E1D6B78FE9A2}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{0CB66BA8-5E1F-4963-93D1-E1D6B78FE9A2}
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
Browser Helper Objects\{0CB66BA8-5E1F-4963-93D1-E1D6B78FE9A2}
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
Browser Helper Objects\{D83A7B12-A4D4-4984-8F72-D41C6B4C1E6E}
Dropping Routine
This Trojan drops the following files:
- %Program Files%\Common\helper.dll
(Note: %Program Files% is the default Program Files folder, usually C:\Program Files in Windows 2000, Server 2003, and XP (32-bit), Vista (32-bit), and 7 (32-bit), or C:\Program Files (x86) in Windows XP (64-bit), Vista (64-bit), and 7 (64-bit).)
This report is generated via an automated analysis system.
SOLUTION
9.300
Step 1
Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.
Step 2
Search and delete this file
- %Program Files%\Common\helper.dll
Step 3
Search and delete this folder
- %Program Files%\Common
Step 4
Scan your computer with your Trend Micro product to delete files detected as TROJ_EXEDOT.SMX. 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.
Step 5
Restore these deleted registry keys/values from backup
*Note: Only Microsoft-related keys/values will be restored. If the malware/grayware also deleted registry keys/values related to programs that are not from Microsoft, please reinstall those programs on your computer.
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Ext\Settings
- {0CB66BA8-5E1F-4963-93D1-E1D6B78FE9A2}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID
- {0CB66BA8-5E1F-4963-93D1-E1D6B78FE9A2}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects
- {0CB66BA8-5E1F-4963-93D1-E1D6B78FE9A2}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects
- {D83A7B12-A4D4-4984-8F72-D41C6B4C1E6E}
Did this description help? Tell us how we did.