Adware.Win32.Amonetize.G

December 30, 2019

ALIASES:

HEUR:AdWare.Win32.Amonetize.heur (Kaspersky); Trojan.Win32.Generic!BT (Sunbelt)

PLATFORM:

Windows

OVERALL RISK RATING:

REPORTED INFECTION:

SYSTEM IMPACT RATING:

INFORMATION EXPOSURE:

Threat Type: Adware
Destructiveness: No
Encrypted:
In the wild: Yes

OVERVIEW

This Adware 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: 351,744 bytes

File Type: EXE

Memory Resident: Yes

Initial Samples Received Date: 27 Dec 2019

Arrival Details

This Adware 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 Adware adds the following processes:

%System%\DllHost.exe /Processid:{F9717507-6651-4EDB-BFF7-AE615179BCCF}
%System%\svchost.exe -k netsvcs

(Note: %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.)

Other System Modifications

This Adware adds the following registry keys:

HKEY_CLASSES_ROOT\foremilk.harbors.1

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
foremilk.harbors.1\CLSID

HKEY_CLASSES_ROOT\foremilk.harbors

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
foremilk.harbors\CurVer

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Wow6432Node\CLSID\{{GUID}}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Wow6432Node\CLSID\{{GUID}}\
ProgID

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Wow6432Node\CLSID\{{GUID}}\
VersionIndependentProgID

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Wow6432Node\CLSID\{{GUID}}\
Programmable

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Wow6432Node\CLSID\{{GUID}}\
LocalServer32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Wow6432Node\CLSID\{{GUID}}\
TypeLib

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Wow6432Node\CLSID\{{GUID}}\
Version

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Wow6432Node\Interface\{0CCC84B3-DBBF-4FB2-8049-C0D4E2B58E13}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Wow6432Node\Interface\{0CCC84B3-DBBF-4FB2-8049-C0D4E2B58E13}\
ProxyStubClsid32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Wow6432Node\Interface\{0CCC84B3-DBBF-4FB2-8049-C0D4E2B58E13}\
TypeLib

It adds the following registry entries:

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
foremilk.harbors.1
(Default) = "Inst Class"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
foremilk.harbors.1\CLSID
(Default) = "{{GUID}}"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
foremilk.harbors
(Default) = "Inst Class"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
foremilk.harbors\CurVer
(Default) = "foremilk.harbors.1"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Wow6432Node\CLSID\{{GUID}}
(Default) = "Inst Class"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Wow6432Node\CLSID\{{GUID}}\
ProgID
(Default) = "foremilk.harbors.1"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Wow6432Node\CLSID\{{GUID}}\
VersionIndependentProgID
(Default) = "foremilk.harbors"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Wow6432Node\CLSID\{{GUID}}\
LocalServer32
(Default) = "{malware file path and name}"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Wow6432Node\CLSID\{{GUID}}\
LocalServer32
ServerExecutable = "{malware file path and name}"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Wow6432Node\CLSID\{{GUID}}\
TypeLib
(Default) = "{{GUID}}"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Wow6432Node\CLSID\{{GUID}}\
Version
(Default) = "1.0"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Wow6432Node\Interface\{0CCC84B3-DBBF-4FB2-8049-C0D4E2B58E13}
(Default) = "IBoot"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Wow6432Node\Interface\{0CCC84B3-DBBF-4FB2-8049-C0D4E2B58E13}\
ProxyStubClsid32
(Default) = "{00020424-0000-0000-C000-000000000046}"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Wow6432Node\Interface\{0CCC84B3-DBBF-4FB2-8049-C0D4E2B58E13}\
TypeLib
(Default) = "{287C0237-009F-47C6-AA9E-1D5BA15182B2}"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Wow6432Node\Interface\{0CCC84B3-DBBF-4FB2-8049-C0D4E2B58E13}\
TypeLib
Version = "1.0"

It deletes the following registry keys:

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Wow6432Node\CLSID\{{GUID}}\
LocalServer32\ServerExecutable

Other Details

This Adware connects to the following possibly malicious URL:

http://www.{BLOCKED}download.com

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

Identify and terminate files detected as Adware.Win32.Amonetize.G

[ Learn More ]

Windows Task Manager may not display all running processes. In this case, please use a third-party process viewer, preferably Process Explorer, to terminate the malware/grayware/spyware file. You may download the said tool here.
If the detected file is displayed in either Windows Task Manager or Process Explorer but you cannot delete it, restart your computer in safe mode. To do this, refer to this link for the complete steps.
If the detected file is not displayed in either Windows Task Manager or Process Explorer, continue doing the next steps.

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
- foremilk.harbors.1

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\foremilk.harbors.1
- CLSID

In HKEY_CLASSES_ROOT
- foremilk.harbors

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\foremilk.harbors
- CurVer

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID
- {{GUID}}

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{{GUID}}
- ProgID

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{{GUID}}
- VersionIndependentProgID

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{{GUID}}
- Programmable

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{{GUID}}
- LocalServer32

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{{GUID}}
- TypeLib

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{{GUID}}
- Version

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\Interface
- {0CCC84B3-DBBF-4FB2-8049-C0D4E2B58E13}

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{0CCC84B3-DBBF-4FB2-8049-C0D4E2B58E13}
- ProxyStubClsid32

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{0CCC84B3-DBBF-4FB2-8049-C0D4E2B58E13}
- TypeLib

To delete the registry key this malware/grayware created:

Open Registry Editor.
» For Windows 7 and Windows Server 2008 (R2) users, click the Start button, type regedit in the Search input field then press Enter.
» For Windows 8, Windows 8.1, Windows 10, and Windows Server 2012 (R2) users, right-click on the lower left corner of the screen, click Run, type regedit in the text box provided, and then press Enter.
In the left panel, double-click the following:
HKEY_CLASSES_ROOT
Still in the left panel, locate and delete the key:
foremilk.harbors.1
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>foremilk.harbors.1
Still in the left panel, locate and delete the key:
CLSID
Again Still in the left panel, locate and delete the key:
foremilk.harbors
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>foremilk.harbors
Still in the left panel, locate and delete the key:
CurVer
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>Wow6432Node>CLSID
Still in the left panel, locate and delete the key:
{{GUID}}
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>Wow6432Node>CLSID>{{GUID}}
Still in the left panel, locate and delete the key:
ProgID
Again Still in the left panel, locate and delete the key:
VersionIndependentProgID
Again Still in the left panel, locate and delete the key:
Programmable
Again Still in the left panel, locate and delete the key:
LocalServer32
Again Still in the left panel, locate and delete the key:
TypeLib
Again Still in the left panel, locate and delete the key:
Version
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>Wow6432Node>Interface
Still in the left panel, locate and delete the key:
{0CCC84B3-DBBF-4FB2-8049-C0D4E2B58E13}
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>Wow6432Node>Interface>{0CCC84B3-DBBF-4FB2-8049-C0D4E2B58E13}
Still in the left panel, locate and delete the key:
ProxyStubClsid32
Again Still in the left panel, locate and delete the key:
TypeLib
Close Registry Editor.

Step 4

Delete this registry value

[ Learn More ]

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\foremilk.harbors.1
- (Default) = "Inst Class"

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\foremilk.harbors.1\CLSID
- (Default) = "{{GUID}}"

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\foremilk.harbors
- (Default) = "Inst Class"

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\foremilk.harbors\CurVer
- (Default) = "foremilk.harbors.1"

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{{GUID}}
- (Default) = "Inst Class"

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{{GUID}}\ProgID
- (Default) = "foremilk.harbors.1"

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{{GUID}}\VersionIndependentProgID
- (Default) = "foremilk.harbors"

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{{GUID}}\LocalServer32
- (Default) = "{malware file path and name}"

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{{GUID}}\LocalServer32
- ServerExecutable = "{malware file path and name}"

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{{GUID}}\TypeLib
- (Default) = "{{GUID}}"

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{{GUID}}\Version
- (Default) = "1.0"

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{0CCC84B3-DBBF-4FB2-8049-C0D4E2B58E13}
- (Default) = "IBoot"

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{0CCC84B3-DBBF-4FB2-8049-C0D4E2B58E13}\ProxyStubClsid32
- (Default) = "{00020424-0000-0000-C000-000000000046}"

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{0CCC84B3-DBBF-4FB2-8049-C0D4E2B58E13}\TypeLib
- (Default) = "{287C0237-009F-47C6-AA9E-1D5BA15182B2}"

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{0CCC84B3-DBBF-4FB2-8049-C0D4E2B58E13}\TypeLib
- Version = "1.0"

To delete the registry value this malware/grayware created:

Open Registry Editor.
» For Windows 7 and Windows Server 2008 (R2) users, click the Start button, type regedit in the Search input field then press Enter.
» For Windows 8, Windows 8.1, Windows 10, and Windows Server 2012 (R2) users, right-click on the lower-left corner of the screen, click Run, type regedit in the text box provided, and then press Enter.
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>foremilk.harbors.1
In the right panel, locate and delete the entry:
(Default) = "Inst Class"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>foremilk.harbors.1>CLSID
In the right panel, locate and delete the entry:
(Default) = "{{GUID}}"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>foremilk.harbors
In the right panel, locate and delete the entry:
(Default) = "Inst Class"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>foremilk.harbors>CurVer
In the right panel, locate and delete the entry:
(Default) = "foremilk.harbors.1"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>Wow6432Node>CLSID>{{GUID}}
In the right panel, locate and delete the entry:
(Default) = "Inst Class"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>Wow6432Node>CLSID>{{GUID}}>ProgID
In the right panel, locate and delete the entry:
(Default) = "foremilk.harbors.1"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>Wow6432Node>CLSID>{{GUID}}>VersionIndependentProgID
In the right panel, locate and delete the entry:
(Default) = "foremilk.harbors"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>Wow6432Node>CLSID>{{GUID}}>LocalServer32
In the right panel, locate and delete the entry:
(Default) = "{malware file path and name}"
Again In the right panel, locate and delete the entry:
ServerExecutable = "{malware file path and name}"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>Wow6432Node>CLSID>{{GUID}}>TypeLib
In the right panel, locate and delete the entry:
(Default) = "{{GUID}}"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>Wow6432Node>CLSID>{{GUID}}>Version
In the right panel, locate and delete the entry:
(Default) = "1.0"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>Wow6432Node>Interface>{0CCC84B3-DBBF-4FB2-8049-C0D4E2B58E13}
In the right panel, locate and delete the entry:
(Default) = "IBoot"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>Wow6432Node>Interface>{0CCC84B3-DBBF-4FB2-8049-C0D4E2B58E13}>ProxyStubClsid32
In the right panel, locate and delete the entry:
(Default) = "{00020424-0000-0000-C000-000000000046}"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>Wow6432Node>Interface>{0CCC84B3-DBBF-4FB2-8049-C0D4E2B58E13}>TypeLib
In the right panel, locate and delete the entry:
(Default) = "{287C0237-009F-47C6-AA9E-1D5BA15182B2}"
Again In the right panel, locate and delete the entry:
Version = "1.0"
Close Registry Editor.

Step 5

Scan your computer with your Trend Micro product to delete files detected as Adware.Win32.Amonetize.G. 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:

Step 6

Restore these deleted registry keys/values from backup

*Note: Only Microsoft-related keys/values will be restored. If the malware/grayware also deleted registry keys/values related to programs that are not from Microsoft, please reinstall those programs on your computer.

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{{GUID}}\LocalServer32
- ServerExecutable

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Adware.Win32.Amonetize.G

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TECHNICAL DETAILS

SOLUTION

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