PE_NGVCK.AA
Virus:Win32/Champagne.A (Microsoft); W32/NGVCK.a !! (McAfee); Virus.Win32.Pioneer.aw (Kaspersky); Virus.Win32.NGVCK.a (v) (Sunbelt); Win32.NGVCK.TTE (FSecure)
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
435,147 bytes
EXE
No
09 May 2012
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 adds the following registry keys:
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\nblgvlavnfpe
HKEY_CURRENT_USER\Software\LdShih\
LsFileExplorer
It adds the following registry entries:
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\nblgvlavnfpe
ImagePath = "\??\%User Temp%\hsyagasipcdz"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\nblgvlavnfpe
Type = "1"
HKEY_CURRENT_USER\Software\LdShih\
LsFileExplorer
ParentImgIdx = "5"
It deletes the following registry keys:
HKEY_LOCAL_MACHINE\system\CurrentControlSet\
Services\nblgvlavnfpe\Security
HKEY_LOCAL_MACHINE\system\CurrentControlSet\
Services\nblgvlavnfpe
HKEY_LOCAL_MACHINE\system\CurrentControlSet\
Services\nblgvlavnfpe\Enum
Dropping Routine
This file infector drops the following files:
- %User Temp%\hsyagasipcdz
(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
9.200
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_LOCAL_MACHINE\SYSTEM\ControlSet001\Services
- nblgvlavnfpe
- In HKEY_CURRENT_USER\Software\LdShih
- LsFileExplorer
Step 3
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_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\nblgvlavnfpe
- ImagePath = "\??\%User Temp%\hsyagasipcdz"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\nblgvlavnfpe
- Type = "1"
- In HKEY_CURRENT_USER\Software\LdShih\LsFileExplorer
- ParentImgIdx = "5"
Step 4
Search and delete this file
- %User Temp%\hsyagasipcdz
Step 5
Scan your computer with your Trend Micro product to clean files detected as PE_NGVCK.AA. 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 6
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\nblgvlavnfpe
- Security
- In HKEY_LOCAL_MACHINE\system\CurrentControlSet\Services
- nblgvlavnfpe
- In HKEY_LOCAL_MACHINE\system\CurrentControlSet\Services\nblgvlavnfpe
- Enum
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