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TROJ_CLICKER.ANE

October 09, 2012
 Analysis by: Rhena Inocencio
 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW


This Trojan 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:

822,784 bytes

File Type:

DLL

Initial Samples Received Date:

01 Jul 2012

Arrival Details

This Trojan 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 Trojan modifies the following registry entries:

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Internet Settings\
Zones
SecuritySafe = "0"

(Note: The default value data of the said registry entry is "1".)

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\LinksBar\ItemCache\
0
DisplayName = "Suggested Sites"

(Note: The default value data of the said registry entry is "".)

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\LinksBar\ItemCache\
0
DisplayMask = "4"

(Note: The default value data of the said registry entry is "0".)

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\LinksBar\ItemCache\
1
DisplayName = "Web Slice Gallery"

(Note: The default value data of the said registry entry is "".)

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\LinksBar\ItemCache\
1
DisplayMask = "4"

(Note: The default value data of the said registry entry is "0".)

  SOLUTION

Minimum Scan Engine:

9.200

FIRST VSAPI PATTERN FILE:

9.232.03

FIRST VSAPI PATTERN DATE:

03 Jul 2012

VSAPI OPR PATTERN File:

9.233.00

VSAPI OPR PATTERN Date:

04 Jul 2012

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

Restore this modified registry value

[ 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_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones
    • From: SecuritySafe = "0"
      To: SecuritySafe = "1"
  • In HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\LinksBar\ItemCache\0
    • From: DisplayName = "Suggested Sites"
      To: DisplayName = ""
  • In HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\LinksBar\ItemCache\0
    • From: DisplayMask = "4"
      To: DisplayMask = "0"
  • In HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\LinksBar\ItemCache\1
    • From: DisplayName = "Web Slice Gallery"
      To: DisplayName = ""
  • In HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\LinksBar\ItemCache\1
    • From: DisplayMask = "4"
      To: DisplayMask = "0"

Step 3

Scan your computer with your Trend Micro product to delete files detected as TROJ_CLICKER.ANE 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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