TSPY_ONLINEG.LYY

October 09, 2012
 Modified by: Christopher Daniel So
 ALIASES:

BehavesLike.Win32.Malware.sfd (mx-v), BehavesLike.Win32.Malware.sfd (mx-v) (Sunbelt)

 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

 OVERALL RISK RATING:
 REPORTED INFECTION:
 SYSTEM IMPACT RATING:
 INFORMATION EXPOSURE:

  • Threat Type: Spyware

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

This spyware 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

File Size:

29,743 bytes

File Type:

EXE

Memory Resident:

Yes

Initial Samples Received Date:

21 May 2012

Arrival Details

This spyware 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 spyware drops the following copies of itself into the affected system:

  • %Program Files%\Internet Explorer\OnlO0r.bak

(Note: %Program Files% is the default Program Files folder, usually C:\Program Files.)

Autostart Technique

This spyware registers itself as a BHO to ensure its automatic execution every time Internet Explorer is used by adding the following registry keys:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
Browser Helper Objects\{C2626E66-D21B-E628-C1DF-1DACCFA36ED2}

Other System Modifications

This spyware deletes the following files:

  • %System%\drivers\etc\hosts

(Note: %System% is the Windows system folder, which is usually C:\Windows\System on Windows 98 and ME, C:\WINNT\System32 on Windows NT and 2000, or C:\Windows\System32 on Windows XP and Server 2003.)

It adds the following registry keys:

HKEY_CLASSES_ROOT\CLSID\{CC3596CB-D6C1-ECA1-AE51-DEEA63F6C21C}

HKEY_CLASSES_ROOT\CLSID\{C2626E66-D21B-E628-C1DF-1DACCFA36ED2}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
*\shellex\ContextMenuHandlers\
ReliveHookDLL

HKEY_CLASSES_ROOT\CLSID\{6C7596CB-31CC-BBA3-BE51-2EEA62F9C51D}

It adds the following registry entries:

HKEY_CLASSES_ROOT\CLSID\{CC3596CB-D6C1-ECA1-AE51-DEEA63F6C21C}\
InProcServer32
(Default) = "%Program Files%\Internet Explorer\OnlO0r.dll"

HKEY_CLASSES_ROOT\CLSID\{C2626E66-D21B-E628-C1DF-1DACCFA36ED2}\
InProcServer32
(Default) = "%Program Files%\Common Files\fjOs0r.dll"

HKEY_CLASSES_ROOT\CLSID\{6C7596CB-31CC-BBA3-BE51-2EEA62F9C51D}\
InProcServer32
(Default) = "%Program Files%\Common Files\fjOs0r.dll"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
*\shellex\ContextMenuHandlers\
ReliveHookDLL
(Default) = "{6C7596CB-31CC-BBA3-BE51-2EEA62F9C51D}"

Dropping Routine

This spyware drops the following files:

  • %Program Files%\Internet Explorer\OnlO0r.dll
  • %Program Files%\Common Files\fjOs0r.dll

(Note: %Program Files% is the default Program Files folder, usually C:\Program Files.)

  SOLUTION

Minimum Scan Engine:

9.200

VSAPI OPR PATTERN File:

5.883.00

VSAPI OPR PATTERN Date:

06 Mar 2009

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

Close all opened browser windows

Step 3

Delete this registry key

[ Learn More ]

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
    • {6C7596CB-31CC-BBA3-BE51-2EEA62F9C51D}
  • In HKEY_CLASSES_ROOT\CLSID
    • {C2626E66-D21B-E628-C1DF-1DACCFA36ED2}
  • In HKEY_CLASSES_ROOT\CLSID
    • {CC3596CB-D6C1-ECA1-AE51-DEEA63F6C21C}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\*\shellex\ContextMenuHandlers
    • ReliveHookDLL

Step 4

Search and delete these files

[ Learn More ]
There may be some component files that are hidden. Please make sure you check the Search Hidden Files and Folders checkbox in the "More advanced options" option to include all hidden files and folders in the search result.
  • %Program Files%\Internet Explorer\OnlO0r.dll
  • %Program Files%\Common Files\fjOs0r.dll

Step 5

Scan your computer with your Trend Micro product to delete files detected as TSPY_ONLINEG.LYY. 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 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.

  • %System%\drivers\etc\hosts


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