HackTool.Win32.KEYPRESS.A

October 14, 2019

ALIASES:

GenericRXIO-EZ!554ACD7A8B4D (McAfee)

PLATFORM:

Windows

OVERALL RISK RATING:

REPORTED INFECTION:

SYSTEM IMPACT RATING:

INFORMATION EXPOSURE:

Threat Type: Hacking Tool
Destructiveness: No
Encrypted:
In the wild: Yes

OVERVIEW

This Hacking Tool 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: 2,654,208 bytes

File Type: DLL

Memory Resident: Yes

Initial Samples Received Date: 14 Oct 2019

Arrival Details

This Hacking Tool 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 Hacking Tool adds the following registry keys:

HKEY_CLASSES_ROOT\lw.lwsoft3.1

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
lw.lwsoft3.1\CLSID

HKEY_CLASSES_ROOT\lw.lwsoft3

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
lw.lwsoft3\CLSID

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
lw.lwsoft3\CurVer

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Wow6432Node\CLSID\{F6C2EA3D-2A5A-4B63-AFDB-5E24BD1D39A0}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Wow6432Node\CLSID\{F6C2EA3D-2A5A-4B63-AFDB-5E24BD1D39A0}\
ProgID

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Wow6432Node\CLSID\{F6C2EA3D-2A5A-4B63-AFDB-5E24BD1D39A0}\
VersionIndependentProgID

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Wow6432Node\CLSID\{F6C2EA3D-2A5A-4B63-AFDB-5E24BD1D39A0}\
Programmable

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Wow6432Node\CLSID\{F6C2EA3D-2A5A-4B63-AFDB-5E24BD1D39A0}\
InprocServer32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Wow6432Node\CLSID\{F6C2EA3D-2A5A-4B63-AFDB-5E24BD1D39A0}\
TypeLib

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Wow6432Node\Interface\{319E1714-1900-4d95-8900-E95B65A9FDBD}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Wow6432Node\Interface\{319E1714-1900-4d95-8900-E95B65A9FDBD}\
TypeLib

It adds the following registry entries:

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
lw.lwsoft3.1
(Default) = "lwcom"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
lw.lwsoft3.1\CLSID
(Default) = "{F6C2EA3D-2A5A-4B63-AFDB-5E24BD1D39A0}"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
lw.lwsoft3
(Default) = "lwcom"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
lw.lwsoft3\CLSID
(Default) = "{F6C2EA3D-2A5A-4B63-AFDB-5E24BD1D39A0}"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
lw.lwsoft3\CurVer
(Default) = "lw.lwsoft3.1"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Wow6432Node\CLSID\{F6C2EA3D-2A5A-4B63-AFDB-5E24BD1D39A0}
(Default) = "lwcom"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Wow6432Node\CLSID\{F6C2EA3D-2A5A-4B63-AFDB-5E24BD1D39A0}\
ProgID
(Default) = "lw.lwsoft3.1"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Wow6432Node\CLSID\{F6C2EA3D-2A5A-4B63-AFDB-5E24BD1D39A0}\
VersionIndependentProgID
(Default) = "lw.lwsoft3"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Wow6432Node\CLSID\{F6C2EA3D-2A5A-4B63-AFDB-5E24BD1D39A0}\
InprocServer32
(Default) = "%User Temp%\9198b2911e0669785617d45b513fc87824ba468f.dll"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Wow6432Node\CLSID\{F6C2EA3D-2A5A-4B63-AFDB-5E24BD1D39A0}\
InprocServer32
ThreadingModel = "Apartment"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Wow6432Node\CLSID\{F6C2EA3D-2A5A-4B63-AFDB-5E24BD1D39A0}\
TypeLib
(Default) = "{71175991-9B59-42EA-B712-9ADF3319AC18}"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Wow6432Node\Interface\{319E1714-1900-4d95-8900-E95B65A9FDBD}
(Default) = "lwcom"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Wow6432Node\Interface\{319E1714-1900-4d95-8900-E95B65A9FDBD}\
TypeLib
(Default) = "{71175991-9B59-42EA-B712-9ADF3319AC18}"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Wow6432Node\Interface\{319E1714-1900-4d95-8900-E95B65A9FDBD}\
TypeLib
version = "1.0"

Dropping Routine

This Hacking Tool drops the following files:

%User Profile%\adb.exe

(Note: %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name} on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)

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 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
- lw.lwsoft3.1

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\lw.lwsoft3.1
- CLSID

In HKEY_CLASSES_ROOT
- lw.lwsoft3

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\lw.lwsoft3
- CLSID

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\lw.lwsoft3
- CurVer

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID
- {F6C2EA3D-2A5A-4B63-AFDB-5E24BD1D39A0}

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{F6C2EA3D-2A5A-4B63-AFDB-5E24BD1D39A0}
- ProgID

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{F6C2EA3D-2A5A-4B63-AFDB-5E24BD1D39A0}
- VersionIndependentProgID

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{F6C2EA3D-2A5A-4B63-AFDB-5E24BD1D39A0}
- Programmable

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{F6C2EA3D-2A5A-4B63-AFDB-5E24BD1D39A0}
- InprocServer32

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{F6C2EA3D-2A5A-4B63-AFDB-5E24BD1D39A0}
- TypeLib

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\Interface
- {319E1714-1900-4d95-8900-E95B65A9FDBD}

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{319E1714-1900-4d95-8900-E95B65A9FDBD}
- 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:
lw.lwsoft3.1
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>lw.lwsoft3.1
Still in the left panel, locate and delete the key:
CLSID
Again Still in the left panel, locate and delete the key:
lw.lwsoft3
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>lw.lwsoft3
Still in the left panel, locate and delete the key:
CLSID
Again 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:
{F6C2EA3D-2A5A-4B63-AFDB-5E24BD1D39A0}
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>Wow6432Node>CLSID>{F6C2EA3D-2A5A-4B63-AFDB-5E24BD1D39A0}
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:
InprocServer32
Again Still in the left panel, locate and delete the key:
TypeLib
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:
{319E1714-1900-4d95-8900-E95B65A9FDBD}
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>Wow6432Node>Interface>{319E1714-1900-4d95-8900-E95B65A9FDBD}
Still in the left panel, locate and delete the key:
TypeLib
Close Registry Editor.

Step 3

Delete this registry value

[ Learn More ]

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\lw.lwsoft3.1
- (Default) = "lwcom"

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\lw.lwsoft3.1\CLSID
- (Default) = "{F6C2EA3D-2A5A-4B63-AFDB-5E24BD1D39A0}"

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\lw.lwsoft3
- (Default) = "lwcom"

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\lw.lwsoft3\CLSID
- (Default) = "{F6C2EA3D-2A5A-4B63-AFDB-5E24BD1D39A0}"

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\lw.lwsoft3\CurVer
- (Default) = "lw.lwsoft3.1"

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{F6C2EA3D-2A5A-4B63-AFDB-5E24BD1D39A0}
- (Default) = "lwcom"

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{F6C2EA3D-2A5A-4B63-AFDB-5E24BD1D39A0}\ProgID
- (Default) = "lw.lwsoft3.1"

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{F6C2EA3D-2A5A-4B63-AFDB-5E24BD1D39A0}\VersionIndependentProgID
- (Default) = "lw.lwsoft3"

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{F6C2EA3D-2A5A-4B63-AFDB-5E24BD1D39A0}\InprocServer32
- (Default) = "%User Temp%\9198b2911e0669785617d45b513fc87824ba468f.dll"

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{F6C2EA3D-2A5A-4B63-AFDB-5E24BD1D39A0}\InprocServer32
- ThreadingModel = "Apartment"

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{F6C2EA3D-2A5A-4B63-AFDB-5E24BD1D39A0}\TypeLib
- (Default) = "{71175991-9B59-42EA-B712-9ADF3319AC18}"

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{319E1714-1900-4d95-8900-E95B65A9FDBD}
- (Default) = "lwcom"

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{319E1714-1900-4d95-8900-E95B65A9FDBD}\TypeLib
- (Default) = "{71175991-9B59-42EA-B712-9ADF3319AC18}"

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{319E1714-1900-4d95-8900-E95B65A9FDBD}\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>lw.lwsoft3.1
In the right panel, locate and delete the entry:
(Default) = "lwcom"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>lw.lwsoft3.1>CLSID
In the right panel, locate and delete the entry:
(Default) = "{F6C2EA3D-2A5A-4B63-AFDB-5E24BD1D39A0}"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>lw.lwsoft3
In the right panel, locate and delete the entry:
(Default) = "lwcom"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>lw.lwsoft3>CLSID
In the right panel, locate and delete the entry:
(Default) = "{F6C2EA3D-2A5A-4B63-AFDB-5E24BD1D39A0}"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>lw.lwsoft3>CurVer
In the right panel, locate and delete the entry:
(Default) = "lw.lwsoft3.1"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>Wow6432Node>CLSID>{F6C2EA3D-2A5A-4B63-AFDB-5E24BD1D39A0}
In the right panel, locate and delete the entry:
(Default) = "lwcom"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>Wow6432Node>CLSID>{F6C2EA3D-2A5A-4B63-AFDB-5E24BD1D39A0}>ProgID
In the right panel, locate and delete the entry:
(Default) = "lw.lwsoft3.1"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>Wow6432Node>CLSID>{F6C2EA3D-2A5A-4B63-AFDB-5E24BD1D39A0}>VersionIndependentProgID
In the right panel, locate and delete the entry:
(Default) = "lw.lwsoft3"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>Wow6432Node>CLSID>{F6C2EA3D-2A5A-4B63-AFDB-5E24BD1D39A0}>InprocServer32
In the right panel, locate and delete the entry:
(Default) = "%User Temp%\9198b2911e0669785617d45b513fc87824ba468f.dll"
Again In the right panel, locate and delete the entry:
ThreadingModel = "Apartment"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>Wow6432Node>CLSID>{F6C2EA3D-2A5A-4B63-AFDB-5E24BD1D39A0}>TypeLib
In the right panel, locate and delete the entry:
(Default) = "{71175991-9B59-42EA-B712-9ADF3319AC18}"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>Wow6432Node>Interface>{319E1714-1900-4d95-8900-E95B65A9FDBD}
In the right panel, locate and delete the entry:
(Default) = "lwcom"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>Wow6432Node>Interface>{319E1714-1900-4d95-8900-E95B65A9FDBD}>TypeLib
In the right panel, locate and delete the entry:
(Default) = "{71175991-9B59-42EA-B712-9ADF3319AC18}"
Again In the right panel, locate and delete the entry:
version = "1.0"
Close Registry Editor.

Step 4

Search and delete this file

[ Learn More ]

There may be some files that are hidden. Please make sure you check the Search Hidden Files and Folders checkbox in the "More advanced options" option to include all hidden files and folders in the search result.

%User Profile%\adb.exe

Step 5

Scan your computer with your Trend Micro product to delete files detected as HackTool.Win32.KEYPRESS.A. 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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HackTool.Win32.KEYPRESS.A

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