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TrojanSpy.Win32.BANKER.CBBCBT

December 10, 2019
 ALIASES:

GenericR-DZI!78EBEBFD89F4 (McAfee); Trojan-Banker.Win32.Banker.terd (Kaspersky); Troj/Banker-GDW (Sophos); Trojan.Win32.Generic!BT (Sunbelt)

 PLATFORM:

Windows

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:
 SYSTEM IMPACT RATING:
 INFORMATION EXPOSURE:

  • Threat Type: Trojan Spy

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW


This Trojan Spy 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:

2,777,088 bytes

File Type:

DLL

Memory Resident:

Yes

Initial Samples Received Date:

23 Nov 2019

Arrival Details

This Trojan Spy 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 Trojan Spy 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\{22A5D0BF-7563-454B-AC43-FDB86C48DB10}

Other System Modifications

This Trojan Spy adds the following registry keys:

HKEY_CLASSES_ROOT\CLSID\{22A5D0BF-7563-454B-AC43-FDB86C48DB10}

HKEY_CLASSES_ROOT\CLSID\{22A5D0BF-7563-454B-AC43-FDB86C48DB10}\
InprocServer32

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Policies\
EXT\CLSID

It adds the following registry entries:

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Wow6432Node\CLSID\{22A5D0BF-7563-454B-AC43-FDB86C48DB10}
(Default) = ""

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Wow6432Node\CLSID\{22A5D0BF-7563-454B-AC43-FDB86C48DB10}\
InprocServer32
(Default) = "%User Temp%\{malware file name}.dll"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Wow6432Node\CLSID\{22A5D0BF-7563-454B-AC43-FDB86C48DB10}\
InprocServer32
ThreadingModel = "Apartment"

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\
Microsoft\Windows\CurrentVersion\
explorer\Browser Helper Objects\{22A5D0BF-7563-454B-AC43-FDB86C48DB10}
NoExplorer = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Wow6432Node\CLSID\{22A5D0BF-7563-454B-AC43-FDB86C48DB10}
(Default) = "Object"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Policies\
EXT\CLSID
{22A5D0BF-7563-454B-AC43-FDB86C48DB10} = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\
Microsoft\Internet Explorer\MAIN\
FeatureControl\FEATURE_ENABLE_SCRIPT_PASTE_URLACTION_IF_PROMPT
iexplore.exe = "1"

This report is generated via an automated analysis system.

  SOLUTION

Minimum Scan Engine:

9.850

Step 1

Before doing any scans, Windows 7, Windows 8, Windows 8.1, and Windows 10 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

[ 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
    • {22A5D0BF-7563-454B-AC43-FDB86C48DB10}
  • In HKEY_CLASSES_ROOT\CLSID\{22A5D0BF-7563-454B-AC43-FDB86C48DB10}
    • InprocServer32
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\EXT
    • CLSID

Step 4

Delete this 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_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{22A5D0BF-7563-454B-AC43-FDB86C48DB10}
    • (Default) = ""
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{22A5D0BF-7563-454B-AC43-FDB86C48DB10}\InprocServer32
    • (Default) = "%User Temp%\{malware file name}.dll"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{22A5D0BF-7563-454B-AC43-FDB86C48DB10}\InprocServer32
    • ThreadingModel = "Apartment"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{22A5D0BF-7563-454B-AC43-FDB86C48DB10}
    • NoExplorer = "1"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{22A5D0BF-7563-454B-AC43-FDB86C48DB10}
    • (Default) = "Object"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\EXT\CLSID
    • {22A5D0BF-7563-454B-AC43-FDB86C48DB10} = "1"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\MAIN\FeatureControl\FEATURE_ENABLE_SCRIPT_PASTE_URLACTION_IF_PROMPT
    • iexplore.exe = "1"

Step 5

Scan your computer with your Trend Micro product to delete files detected as TrojanSpy.Win32.BANKER.CBBCBT. 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 the following Trend Micro Support pages for more information:


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