TROJ_BANLOAD.FKW
Trojan.Gen.2 (Symantec); PAK:UPX (Kaspersky); ERROR (Sunbelt)
Windows 2000, Windows XP, Windows Server 2003
![](/vinfo/imgFiles/legend.jpg)
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
40,448 bytes
EXE
No
21 Jan 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.
Installation
This Trojan creates the following folders:
- %System Root%\860973133
(Note: %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.)
Autostart Technique
This Trojan 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\{890FC786-B044-4FE9-87FE-2E02B5AC9439}
Other System Modifications
This Trojan adds the following registry keys:
HKEY_CLASSES_ROOT\CLSID\{890FC786-B044-4FE9-87FE-2E02B5AC9439}
HKEY_CLASSES_ROOT\CLSID\{890FC786-B044-4FE9-87FE-2E02B5AC9439}\
InprocServer32
It adds the following registry entries:
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{890FC786-B044-4FE9-87FE-2E02B5AC9439}\InprocServer32
ThreadingModel = "Apartment"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
Browser Helper Objects\{890FC786-B044-4FE9-87FE-2E02B5AC9439}
NoExplorer = "1"
Dropping Routine
This Trojan drops the following files:
- %System Root%\LogBR
- %System Root%\860973133\672693497.dll
(Note: %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.)
Other Details
This Trojan connects to the following possibly malicious URL:
- http://feliz2010.{BLOCKED}te.com/User/li/05-01/dll.rar
This report is generated via an automated analysis system.
SOLUTION
9.200
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
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
- {890FC786-B044-4FE9-87FE-2E02B5AC9439}
- In HKEY_CLASSES_ROOT\CLSID\{890FC786-B044-4FE9-87FE-2E02B5AC9439}
- InprocServer32
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\Classes\CLSID\{890FC786-B044-4FE9-87FE-2E02B5AC9439}\InprocServer32
- ThreadingModel="Apartment"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{890FC786-B044-4FE9-87FE-2E02B5AC9439}
- NoExplorer="1"
Step 5
Search and delete these files
- %System Root%\LogBR
- %System Root%\860973133\672693497.dll
Step 6
Search and delete this folder
Step 7
Scan your computer with your Trend Micro product to delete files detected as TROJ_BANLOAD.FKW. 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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