TSPY_BANKER.CGA
Trojan.Win32.VBKrypt.qvbf (Kaspersky); Trojan horse PSW.Banker6.AVDW (AVG)
Windows 2000, Windows XP, Windows Server 2003
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
229,376 bytes
EXE
No
09 May 2013
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.
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\{B30F6560-539F-4222-A76D-0FE60F44F60E}
Other System Modifications
This spyware deletes the following files:
- %Windows%\isbu1840DesBananaeD
(Note: %Windows% is the Windows folder, which is usually C:\Windows.)
It adds the following registry keys:
HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\
Microsoft\Windows\CurrentVersion\
explorer
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Policies\
Ext\CLSID
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{83EC2933-E9AA-4165-8497-EA95A2560B0D}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{83EC2933-E9AA-4165-8497-EA95A2560B0D}\1.0
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{83EC2933-E9AA-4165-8497-EA95A2560B0D}\1.0\
FLAGS
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{83EC2933-E9AA-4165-8497-EA95A2560B0D}\1.0\
0
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{83EC2933-E9AA-4165-8497-EA95A2560B0D}\1.0\
0\win32
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{83EC2933-E9AA-4165-8497-EA95A2560B0D}\1.0\
HELPDIR
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{A8ACB4BF-C590-4599-9537-4DDE36B8F63C}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{A8ACB4BF-C590-4599-9537-4DDE36B8F63C}\ProxyStubClsid
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{A8ACB4BF-C590-4599-9537-4DDE36B8F63C}\ProxyStubClsid32
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{A8ACB4BF-C590-4599-9537-4DDE36B8F63C}\TypeLib
HKEY_CLASSES_ROOT\CLSID\{B30F6560-539F-4222-A76D-0FE60F44F60E}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{B30F6560-539F-4222-A76D-0FE60F44F60E}\InprocServer32
HKEY_CLASSES_ROOT\Adobe.CsAdobe
It adds the following registry entries:
HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\
Microsoft\Windows\CurrentVersion\
explorer
TrayPlay = "Viper7"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\policies\
Ext\CLSID
{B30F6560-539F-4222-A76D-0FE60F44F60E} = "1"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{A8ACB4BF-C590-4599-9537-4DDE36B8F63C}\TypeLib
Version = "1.0"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{B30F6560-539F-4222-A76D-0FE60F44F60E}
ProgID = "Adobe.CsAdobe"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{B30F6560-539F-4222-A76D-0FE60F44F60E}\InprocServer32
ThreadingModel = "Apartment"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{B30F6560-539F-4222-A76D-0FE60F44F60E}
TypeLib = "{83EC2933-E9AA-4165-8497-EA95A2560B0D}"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{B30F6560-539F-4222-A76D-0FE60F44F60E}
VERSION = "1.0"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Adobe.CsAdobe
Clsid = "{B30F6560-539F-4222-A76D-0FE60F44F60E}"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{A8ACB4BF-C590-4599-9537-4DDE36B8F63C}
ProxyStubClsid = "{00020424-0000-0000-C000-000000000046}"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{A8ACB4BF-C590-4599-9537-4DDE36B8F63C}
ProxyStubClsid32 = "{00020424-0000-0000-C000-000000000046}"
Dropping Routine
This spyware drops the following files:
- %Windows%\win000.tmp
- %Windows%\isbu1840.dll
(Note: %Windows% is the Windows folder, which is usually C:\Windows.)
Other Details
This spyware connects to the following possibly malicious URL:
- http://dtimbiras.{BLOCKED}onicnet.com/idgtray3.jpg
This report is generated via an automated analysis system.
SOLUTION
9.300
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
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_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion
- explorer
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Ext
- CLSID
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib
- {83EC2933-E9AA-4165-8497-EA95A2560B0D}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{83EC2933-E9AA-4165-8497-EA95A2560B0D}
- 1.0
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{83EC2933-E9AA-4165-8497-EA95A2560B0D}\1.0
- FLAGS
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{83EC2933-E9AA-4165-8497-EA95A2560B0D}\1.0
- 0
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{83EC2933-E9AA-4165-8497-EA95A2560B0D}\1.0\0
- win32
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{83EC2933-E9AA-4165-8497-EA95A2560B0D}\1.0
- HELPDIR
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface
- {A8ACB4BF-C590-4599-9537-4DDE36B8F63C}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{A8ACB4BF-C590-4599-9537-4DDE36B8F63C}
- ProxyStubClsid
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{A8ACB4BF-C590-4599-9537-4DDE36B8F63C}
- ProxyStubClsid32
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{A8ACB4BF-C590-4599-9537-4DDE36B8F63C}
- TypeLib
- In HKEY_CLASSES_ROOT\CLSID
- {B30F6560-539F-4222-A76D-0FE60F44F60E}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{B30F6560-539F-4222-A76D-0FE60F44F60E}
- InprocServer32
- In HKEY_CLASSES_ROOT
- Adobe.CsAdobe
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\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer
- TrayPlay = "Viper7"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Ext\CLSID
- {B30F6560-539F-4222-A76D-0FE60F44F60E} = "1"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{A8ACB4BF-C590-4599-9537-4DDE36B8F63C}\TypeLib
- Version = "1.0"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{B30F6560-539F-4222-A76D-0FE60F44F60E}
- ProgID = "Adobe.CsAdobe"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{B30F6560-539F-4222-A76D-0FE60F44F60E}\InprocServer32
- ThreadingModel = "Apartment"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{B30F6560-539F-4222-A76D-0FE60F44F60E}
- TypeLib = "{83EC2933-E9AA-4165-8497-EA95A2560B0D}"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{B30F6560-539F-4222-A76D-0FE60F44F60E}
- VERSION = "1.0"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Adobe.CsAdobe
- Clsid = "{B30F6560-539F-4222-A76D-0FE60F44F60E}"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{A8ACB4BF-C590-4599-9537-4DDE36B8F63C}
- ProxyStubClsid = "{00020424-0000-0000-C000-000000000046}"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{A8ACB4BF-C590-4599-9537-4DDE36B8F63C}
- ProxyStubClsid32 = "{00020424-0000-0000-C000-000000000046}"
Step 5
Search and delete these components
- %Windows%\win000.tmp
- %Windows%\isbu1840.dll
Step 6
Scan your computer with your Trend Micro product to delete files detected as TSPY_BANKER.CGA. 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 7
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.
- %Windows%\isbu1840DesBananaeD
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