TROJ_HILOTI.SMEP
Windows 2000, XP, Server 2003
Threat Type: Trojan
Destructiveness: No
Encrypted: No
In the wild: Yes
OVERVIEW
This Trojan arrives as a file that exports the functions of other malware/grayware. It may be dropped by other malware.
TECHNICAL DETAILS
61,952 bytes
PE
Yes
08 Aug 2010
Arrival Details
This Trojan arrives as a file that exports the functions of other malware/grayware.
It may be dropped by other malware.
Installation
This Trojan drops the following copies of itself into the affected system:
- %Windows%\epsxtso.dll
(Note: %Windows% is the Windows folder, which is usually C:\Windows.)
Autostart Technique
This Trojan adds the following registry entries to enable its automatic execution at every system startup:
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
{random} = rundll32.exe "%Windows%\epsxtso.dll",Startup
Other System Modifications
This Trojan adds the following registry keys:
HKEY_LOCAL_MACHINE\Software\Microsft\
Windows\CurrentVersion\{random}
"" = ""
SOLUTION
8.900
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
Scan your computer with your Trend Micro product and note files detected as TROJ_HILOTI.SMEP
Step 3
Terminate a malware/grayware process
*Note: If the detected process is not displayed in theWindows Task Manager, continue doing the next steps.
rundll32.exe
Step 4
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_LOCAL_MACHINE\Software\Microsft\Windows\CurrentVersion
- {random}
- {random}
Step 5
Delete this registry value
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\Microsoft\Windows\CurrentVersion\Run
- {random} = rundll32.exe %Windows%\epsxtso.dll,Startup
- {random} = rundll32.exe %Windows%\epsxtso.dll,Startup
Step 6
Scan your computer with your Trend Micro product to delete files detected as TROJ_HILOTI.SMEP. 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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