Analysis by: Roland Marco Dela Paz
 PLATFORM:

Windows 2000, XP, Server 2003

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: Yes

  • In the wild: Yes

  TECHNICAL DETAILS

File Size: 262,656 bytes
File Type: DLL
Memory Resident: No
Initial Samples Received Date: 17 Sep 2010

Autostart Technique

This Trojan adds the following registry keys to install itself as a Browser Helper Object (BHO):

HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\
Windows\CURRENTVERSION\Explorer\
Browser Helper Objects
{9958B0D0-3367-4F88-B22E-E088BA7602E7} =

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

Other System Modifications

This Trojan adds the following registry keys:

HKEY_CLASSES_ROOT\CLSID
{9958B0D0-3367-4F88-B22E-E088BA7602E7} =

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

HKEY_CLASSES_ROOT
cc570c77-120e-43ba-aad4-dff91793aba1.Adobe PDF Helper for Interne =

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

  SOLUTION

Minimum Scan Engine: 8.900

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

Scan your computer with your Trend Micro product and note files detected as TROJ_BANLOAD.CZS

Step 3

Restart in Safe Mode

[ Learn More ]

Step 4

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\
    • {9958B0D0-3367-4F88-B22E-E088BA7602E7}
  • In HKEY_CLASSES_ROOT\
    • cc570c77-120e-43ba-aad4-dff91793aba1.Adobe PDF Helper for Interne
  • In HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\Windows\CURRENTVERSION\Explorer\Browser Helper Objects\
    • {9958B0D0-3367-4F88-B22E-E088BA7602E7}

Step 5

Search and delete the file detected as TROJ_BANLOAD.CZS

[ Learn More ]
Please make sure you check the Search Hidden Files and Folders checkbox in the More advanced options option to include all hidden files in the search result.


Did this description help? Tell us how we did.