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Trojan.Win32.CLICKER.AG

March 27, 2020
 PLATFORM:

Windows

 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:

1,196,032 bytes

File Type:

EXE

Memory Resident:

Yes

Initial Samples Received Date:

27 Mar 2020

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 adds the following registry entries:

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\
Microsoft\Internet Explorer\MAIN\
FeatureControl\FEATURE_SCRIPTURL_MITIGATION
{malware file name}.exe = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Microsoft.PubIE
(Default) = "{malware file path and name}"

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\
Microsoft\Internet Explorer\AdvancedOptions\
BROWSE\SCRIPT_DEBUGGER
CheckedValue = "yes"

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\
Microsoft\Internet Explorer\AdvancedOptions\
BROWSE\SCRIPT_DEBUGGER
DefaultValue = "yes"

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\
Microsoft\Internet Explorer\AdvancedOptions\
BROWSE\SCRIPT_DEBUGGER
UncheckedValue = "no"

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\
Microsoft\Internet Explorer\AdvancedOptions\
BROWSE\SCRIPT_DEBUGGER_IE
CheckedValue = "yes"

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\
Microsoft\Internet Explorer\AdvancedOptions\
BROWSE\SCRIPT_DEBUGGER_IE
DefaultValue = "yes"

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\
Microsoft\Internet Explorer\AdvancedOptions\
BROWSE\SCRIPT_DEBUGGER_IE
UncheckedValue = "no"

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\
Microsoft\Internet Explorer\MAIN\
FeatureControl\FEATURE_BROWSER_EMULATION
{malware file name}.exe = "11000"

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\
Microsoft\Internet Explorer\MAIN\
FeatureControl\FEATURE_ACTIVEX_REPURPOSEDETECTION
{malware file name}.exe = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\
Microsoft\Internet Explorer\MAIN\
FeatureControl\FEATURE_BLOCK_LMZ_IMG
{malware file name}.exe = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\
Microsoft\Internet Explorer\MAIN\
FeatureControl\FEATURE_BLOCK_LMZ_OBJECT
{malware file name}.exe = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\
Microsoft\Internet Explorer\MAIN\
FeatureControl\FEATURE_BLOCK_LMZ_SCRIPT
{malware file name}.exe = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\
Microsoft\Internet Explorer\MAIN\
FeatureControl\FEATURE_Cross_Domain_Redirect_Mitigation
{malware file name}.exe = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\
Microsoft\Internet Explorer\MAIN\
FeatureControl\FEATURE_ENABLE_SCRIPT_PASTE_URLACTION_IF_PROMPT
{malware file name}.exe = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\
Microsoft\Internet Explorer\MAIN\
FeatureControl\FEATURE_LOCALMACHINE_LOCKDOWN
{malware file name}.exe = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\
Microsoft\Internet Explorer\MAIN\
FeatureControl\FEATURE_GPU_RENDERING
{malware file name}.exe = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\
Microsoft\Internet Explorer\MAIN\
FeatureControl\FEATURE_MAXCONNECTIONSPER1_0SERVER
{malware file name}.exe = "10"

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\
Microsoft\Internet Explorer\MAIN\
FeatureControl\FEATURE_MAXCONNECTIONSPERSERVER
{malware file name}.exe = "10"

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

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\Wow6432Node\Microsoft\Internet Explorer\MAIN\FeatureControl\FEATURE_SCRIPTURL_MITIGATION
    • {malware file name}.exe = "1"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Microsoft.PubIE
    • (Default) = "{malware file path and name}"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\AdvancedOptions\BROWSE\SCRIPT_DEBUGGER
    • CheckedValue = "yes"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\AdvancedOptions\BROWSE\SCRIPT_DEBUGGER
    • DefaultValue = "yes"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\AdvancedOptions\BROWSE\SCRIPT_DEBUGGER
    • UncheckedValue = "no"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\AdvancedOptions\BROWSE\SCRIPT_DEBUGGER_IE
    • CheckedValue = "yes"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\AdvancedOptions\BROWSE\SCRIPT_DEBUGGER_IE
    • DefaultValue = "yes"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\AdvancedOptions\BROWSE\SCRIPT_DEBUGGER_IE
    • UncheckedValue = "no"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\MAIN\FeatureControl\FEATURE_BROWSER_EMULATION
    • {malware file name}.exe = "11000"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\MAIN\FeatureControl\FEATURE_ACTIVEX_REPURPOSEDETECTION
    • {malware file name}.exe = "1"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\MAIN\FeatureControl\FEATURE_BLOCK_LMZ_IMG
    • {malware file name}.exe = "1"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\MAIN\FeatureControl\FEATURE_BLOCK_LMZ_OBJECT
    • {malware file name}.exe = "1"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\MAIN\FeatureControl\FEATURE_BLOCK_LMZ_SCRIPT
    • {malware file name}.exe = "1"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\MAIN\FeatureControl\FEATURE_Cross_Domain_Redirect_Mitigation
    • {malware file name}.exe = "1"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\MAIN\FeatureControl\FEATURE_ENABLE_SCRIPT_PASTE_URLACTION_IF_PROMPT
    • {malware file name}.exe = "1"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\MAIN\FeatureControl\FEATURE_LOCALMACHINE_LOCKDOWN
    • {malware file name}.exe = "1"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\MAIN\FeatureControl\FEATURE_GPU_RENDERING
    • {malware file name}.exe = "1"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\MAIN\FeatureControl\FEATURE_MAXCONNECTIONSPER1_0SERVER
    • {malware file name}.exe = "10"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\MAIN\FeatureControl\FEATURE_MAXCONNECTIONSPERSERVER
    • {malware file name}.exe = "10"

Step 3

Scan your computer with your Trend Micro product to delete files detected as Trojan.Win32.CLICKER.AG. 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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