PE_EXPIRO.BME
Windows 2000, Windows XP, Windows Server 2003
Threat Type: File infector
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This file infector 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
Arrival Details
This file infector arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
Other System Modifications
This file infector deletes the following files:
- %Windows%\Registration\{02D4B3F1-FD88-11D1-960D-00805FC79235}.{8493222B-35D1-4320-B1B9-4290CB576929}.crmlog
(Note: %Windows% is the Windows folder, where it usually is C:\Windows on all Windows operating system versions.)
It deletes the following registry keys:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\
Services\dmio\Encapsulation Info
HKEY_LOCAL_MACHINE\System\CurrentControlSet\
Services\dmload\EncapsulationPending
Dropping Routine
This file infector drops the following files:
- %Windows%\microsoft.net\framework\v4.0.30319\onfedbib.tmp
- %System%\fmbihmbj.tmp
- %System%\lklmoibl.tmp
- %Windows%\microsoft.net\framework\v2.0.50727\ahmcnkdd.tmp
- %Windows%\microsoft.net\framework\v4.0.30319\mkhlppml.tmp
- %System%\ndkcnihp.tmp
- %System%\podljnna.tmp
- %Windows%\Microsoft.NET\Framework\v2.0.50727\ngen_service.lock
- %Windows%\Microsoft.NET\Framework\v2.0.50727\ngenservicelock.dat
- %Windows%\Microsoft.NET\Framework\v4.0.30319\ngenservicelock.dat
- %Windows%\Microsoft.NET\Framework\v4.0.30319\ngenrootstorelock.dat
- %Windows%\Registration\{02D4B3F1-FD88-11D1-960D-00805FC79235}.{05865CAE-BB41-40A9-9E9E-D4DF85949F88}.crmlog
- %Windows%\microsoft.net\framework\v4.0.30319\aspnet_state.exe
- %System%\cisvc.exe
- %System%\clipsrv.exe
- %Windows%\microsoft.net\framework\v2.0.50727\mscorsvw.exe
- %Windows%\microsoft.net\framework\v4.0.30319\mscorsvw.exe
- %System%\dllhost.exe
- %System%\dmadmin.exe
(Note: %Windows% is the Windows folder, where it usually is C:\Windows on all Windows operating system versions.. %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.)
This report is generated via an automated analysis system.
SOLUTION
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 these components
- %Windows%\microsoft.net\framework\v4.0.30319\onfedbib.tmp
- %System%\fmbihmbj.tmp
- %System%\lklmoibl.tmp
- %Windows%\microsoft.net\framework\v2.0.50727\ahmcnkdd.tmp
- %Windows%\microsoft.net\framework\v4.0.30319\mkhlppml.tmp
- %System%\ndkcnihp.tmp
- %System%\podljnna.tmp
- %Windows%\Microsoft.NET\Framework\v2.0.50727\ngen_service.lock
- %Windows%\Microsoft.NET\Framework\v2.0.50727\ngenservicelock.dat
- %Windows%\Microsoft.NET\Framework\v4.0.30319\ngenservicelock.dat
- %Windows%\Microsoft.NET\Framework\v4.0.30319\ngenrootstorelock.dat
- %Windows%\Registration\{02D4B3F1-FD88-11D1-960D-00805FC79235}.{05865CAE-BB41-40A9-9E9E-D4DF85949F88}.crmlog
- %Windows%\microsoft.net\framework\v4.0.30319\aspnet_state.exe
- %System%\cisvc.exe
- %System%\clipsrv.exe
- %Windows%\microsoft.net\framework\v2.0.50727\mscorsvw.exe
- %Windows%\microsoft.net\framework\v4.0.30319\mscorsvw.exe
- %System%\dllhost.exe
- %System%\dmadmin.exe
Step 3
Scan your computer with your Trend Micro product to clean files detected as PE_EXPIRO.BME. 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 4
Restore this file from backup only Microsoft-related files will be restored. If this malware/grayware also deleted files related to programs that are not from Microsoft, please reinstall those programs on you computer again.
- %Windows%\Registration\{02D4B3F1-FD88-11D1-960D-00805FC79235}.{8493222B-35D1-4320-B1B9-4290CB576929}.crmlog
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_LOCAL_MACHINE\System\CurrentControlSet\Services\dmio
- Encapsulation Info
- In HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\dmload
- EncapsulationPending
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