PE_HUNK.NY
Virus:Win32/Huhk.7005 (Microsoft), W32.Huhk.A (Symantec), W32/Huhk.c (McAfee), Worm.Win32.Huhk.c (Kaspersky), Win32.Huhc.B (FSecure), Worm.Win32.Huhk.c (Sunbelt)
Windows 2000, XP, Server 2003
Threat Type: File infector
Destructiveness: No
Encrypted: No
In the wild: Yes
OVERVIEW
Infects files
This malware is a file infector that drops files.
It infects certain file types in the affected system.
TECHNICAL DETAILS
Varies
PE
Yes
20 Jul 2008
Installation
This file infector drops the following files:
- %User Temp%\lorer.exe - copy of the original %Windows%\explorer.exe
(Note: %Windows% is the Windows folder, which is usually C:\Windows.)
File Infection
This file infector infects the following files:
- %Windows%\explorer.exe
- %System%\dllcache\explorer.exe
(Note: %Windows% is the Windows folder, which is usually C:\Windows.. %System% is the Windows system folder, which is usually C:\Windows\System32.)
It infects the following file types:
- EXE
SOLUTION
8.900
5.425.00
22 Jul 2008
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
Identify and terminate files detected as PE_HUNK.NY
- Windows Task Manager may not display all running processes. In this case, please use a third-party process viewer, preferably Process Explorer, to terminate the malware/grayware/spyware file. You may download the said tool here.
- If the detected file is displayed in either Windows Task Manager or Process Explorer but you cannot delete it, restart your computer in safe mode. To do this, refer to this link for the complete steps.
- If the detected file is not displayed in either Windows Task Manager or Process Explorer, continue doing the next steps.
Step 3
Restoring a File to its Original Location
- Click Start>Run.
- In the text box, type the following:
command /c copy %User Temp%\lorer.exe %Windows%\explorer.exe - Press Enter.
Step 4
Search and delete this file
Step 5
Scan your computer with your Trend Micro product to clean files detected as PE_HUNK.NY. 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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