PE_RECTIX.A
Virus:Win32/Hala.A (Microsoft), W32.Almanahe.C!inf (Symantec), W32/Hala (McAfee)
Windows 2000, Windows XP, Windows Server 2003
Threat Type: File infector
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This file infector steals system information.
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.
Installation
This file infector drops the following files:
- %System%\d9dx.dll
- %System%\d3d8xof.dll
(Note: %System% is the Windows system folder, which is usually C:\Windows\System32.)
Autostart Technique
This file infector adds the following registry entries to enable its automatic execution at every system startup:
HKEY_CLASSES_ROOT\CLSID\{DA1910DE-AA86-4ED0-874B-2924E38BAD99}\
InprocServer32
(Default) = "%System%\d3d8xof.dll"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{DA1910DE-AA86-4ED0-874B-2924E38BAD99}\InprocServer32
(Default) = "%System%\d3d8xof.dll"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\ShellServiceObjectDelayLoad
DirectX = "{DA1910DE-AA86-4ED0-874B-2924E38BAD99}"
Other System Modifications
This file infector adds the following registry keys:
HKEY_CLASSES_ROOT\CLSID\{DA1910DE-AA86-4ED0-874B-2924E38BAD99}
It adds the following registry entries:
HKEY_LOCAL_MACHINE\SOFTWARE\Google
CheckBKFlags = "{random value}"
File Infection
This file infector infects the following file types:
- .EXE
Other Details
This file infector connects to the following possibly malicious URL:
- http://fbindwebdlm.{BLOCKED}isdown.com/down/sp.dlm
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
Scan your computer with your Trend Micro product and note files detected as PE_RECTIX.A
Step 3
Restart in Safe Mode
Step 4
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\SOFTWARE\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad
- DirectX = {DA1910DE-AA86-4ED0-874B-2924E38BAD99}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Google
- CheckBKFlags = {random value}
Step 5
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_CLASSES_ROOT\CLSID
- {DA1910DE-AA86-4ED0-874B-2924E38BAD99}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID
- {DA1910DE-AA86-4ED0-874B-2924E38BAD99}
Step 6
Search and delete these files
- %System%\d9dx.dll
- %System%\d3d8xof.dll
Step 7
Restart in normal mode and scan your computer with your Trend Micro product for files detected as PE_RECTIX.A. 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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