COINMINER.WIN32.TEVEPLUGS.THAOODAH

Infection Channel: Dropped by other malware, Spammed via email

This Coinminer arrives as an attachment to email messages spammed by other malware/grayware or malicious users. It arrives as a component bundled with malware/grayware packages.

File Size: 1,976,673 bytes

File Type: EXE

Memory Resident: Yes

Initial Samples Received Date: 05 Sep 2018

Payload: Drops files, Connects to URLs/IPs

Arrival Details

This Coinminer arrives as an attachment to email messages spammed by other malware/grayware or malicious users.

It arrives as a component bundled with malware/grayware packages.

Installation

This Coinminer drops and executes the following files:

%User Temp%\zip.exe ← Coinminer.MSIL.MALXMR.THAOODAH
%User Temp%\leer.vbs ← Worm.VBS.Dunihi.TVP
%User Temp%\Tv-Plug-In.exe
%User Temp%\__tmp_rar_sfx_access_check_36139816
%User Temp%\iisfcgi.dll
%User Temp%\iisfreb.dll
%User Temp%\iisreqs.dll
%User Temp%\iisres.dll
%User Temp%\iisRtl.dll
%User Temp%\iisutil2.dll
%User Temp%\iisvermg.dll
%User Temp%\iiswsock.dll
%User Temp%\iprestr.dll
%User Temp%\browscap.ini
%User Temp%\iisexpress.exe
%User Temp%\IisExpressAdminCmd.exe
%User Temp%\iisexpresstray.exe
%User Temp%\authanon.dll
%User Temp%\authbas.dll
%User Temp%\authcert.dll
%User Temp%\authmap.dll
%User Temp%\authsspi.dll
%User Temp%\browscap.dll
%User Temp%\cachtokn.dll
%User Temp%\IisExpressadminCmd.resources.dll
%User Temp%\iisexpresshelper.dll
%User Temp%\iisexpresstray.dll
%User Temp%\IisExpressAdminCmd.exe.config
%User Temp%\iisexpress.exe.manifest
%User Temp%\iisexpressshim.sdb
%User Temp%\nsb78C8.tmp\welcome.bmp
%User Temp%\nsb78C8.tmp\header.bmp
%User Temp%\nsb78C8.tmp\Eula.txt
%User Temp%\nsb78C8.tmp\nsDialogs.dll
%User Temp%\nsb78C8.tmp\System.dll
%User Startup%\leer.vbs ← Worm.VBS.Dunihi.TVP

It adds the following processes:

%System%\WScript.exe "%User Temp%\leer.vbs"
%User Temp%\zip.exe

(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Local\Temp on Windows Vista, 7, and 8.)

Minimum Scan Engine: 9.850

FIRST VSAPI PATTERN FILE: 14.542.03

FIRST VSAPI PATTERN DATE: 03 Oct 2018

VSAPI OPR PATTERN File: 14.543.00

VSAPI OPR PATTERN Date: 04 Oct 2018

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

Note that not all files, folders, and registry keys and entries are installed on your computer during this malware's/spyware's/grayware's execution. This may be due to incomplete installation or other operating system conditions. If you do not find the same files/folders/registry information, please proceed to the next step.

Step 3

Restart in Safe Mode

[ Learn More ]

Step 4

Search and delete these files

[ 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 Temp%\__tmp_rar_sfx_access_check_36139816
%User Temp%\Tv-Plug-In.exe
%User Temp%\zip.exe
%User Temp%\leer.vbs
%User Temp%\iisfcgi.dll
%User Temp%\iisfreb.dll
%User Temp%\iisreqs.dll
%User Temp%\iisres.dll
%User Temp%\iisRtl.dll
%User Temp%\iisutil2.dll
%User Temp%\iisvermg.dll
%User Temp%\iiswsock.dll
%User Temp%\iprestr.dll
%User Temp%\browscap.ini
%User Temp%\iisexpress.exe
%User Temp%\IisExpressAdminCmd.exe
%User Temp%\iisexpresstray.exe
%User Temp%\authanon.dll
%User Temp%\authbas.dll
%User Temp%\authcert.dll
%User Temp%\authmap.dll
%User Temp%\authsspi.dll
%User Temp%\browscap.dll
%User Temp%\cachtokn.dll
%User Temp%\IisExpressadminCmd.resources.dll
%User Temp%\iisexpresshelper.dll
%User Temp%\iisexpresstray.dll
%User Temp%\IisExpressAdminCmd.exe.config
%User Temp%\iisexpress.exe.manifest
%User Temp%\iisexpressshim.sdb
%User Temp%\nsb78C8.tmp\welcome.bmp
%User Temp%\nsb78C8.tmp\header.bmp
%User Temp%\nsb78C8.tmp\Eula.txt
%User Temp%\nsb78C8.tmp\nsDialogs.dll
%User Temp%\nsb78C8.tmp\System.dll
%User Startup%\leer.vbs

To delete malware/grayware files:

For Windows 2000, Windows XP, and Windows Server 2003:

Right-click Start then click Search....
In the File name* input box, type
%User Temp%\__tmp_rar_sfx_access_check_36139816
%User Temp%\Tv-Plug-In.exe
%User Temp%\zip.exe
%User Temp%\leer.vbs
%User Temp%\iisfcgi.dll
%User Temp%\iisfreb.dll
%User Temp%\iisreqs.dll
%User Temp%\iisres.dll
%User Temp%\iisRtl.dll
%User Temp%\iisutil2.dll
%User Temp%\iisvermg.dll
%User Temp%\iiswsock.dll
%User Temp%\iprestr.dll
%User Temp%\browscap.ini
%User Temp%\iisexpress.exe
%User Temp%\IisExpressAdminCmd.exe
%User Temp%\iisexpresstray.exe
%User Temp%\authanon.dll
%User Temp%\authbas.dll
%User Temp%\authcert.dll
%User Temp%\authmap.dll
%User Temp%\authsspi.dll
%User Temp%\browscap.dll
%User Temp%\cachtokn.dll
%User Temp%\IisExpressadminCmd.resources.dll
%User Temp%\iisexpresshelper.dll
%User Temp%\iisexpresstray.dll
%User Temp%\IisExpressAdminCmd.exe.config
%User Temp%\iisexpress.exe.manifest
%User Temp%\iisexpressshim.sdb
%User Temp%\nsb78C8.tmp\welcome.bmp
%User Temp%\nsb78C8.tmp\header.bmp
%User Temp%\nsb78C8.tmp\Eula.txt
%User Temp%\nsb78C8.tmp\nsDialogs.dll
%User Temp%\nsb78C8.tmp\System.dll
%User Startup%\leer.vbs
In the Look In drop-down list, select My Computer then press Enter.
Once located, select the file then press SHIFT+DELETE to delete it.
Repeat the said steps for all files listed.
*Note: The file name input box title varies depending on the Windows version (e.g. Search for files or folders named or All or part of the file name.).

For Windows Vista, Windows 7, Windows Server 2008, Windows 8, Windows 8.1, and Windows Server 2012:

Open a Windows Explorer window.
- For Windows Vista, 7, and Server 2008 users, click Start>Computer.
- For Windows 8, 8.1, and Server 2012 users, right-click on the lower left corner of the screen, then click File Explorer.
In the Search Computer/This PC input box, type:
%User Temp%\__tmp_rar_sfx_access_check_36139816
%User Temp%\Tv-Plug-In.exe
%User Temp%\zip.exe
%User Temp%\leer.vbs
%User Temp%\iisfcgi.dll
%User Temp%\iisfreb.dll
%User Temp%\iisreqs.dll
%User Temp%\iisres.dll
%User Temp%\iisRtl.dll
%User Temp%\iisutil2.dll
%User Temp%\iisvermg.dll
%User Temp%\iiswsock.dll
%User Temp%\iprestr.dll
%User Temp%\browscap.ini
%User Temp%\iisexpress.exe
%User Temp%\IisExpressAdminCmd.exe
%User Temp%\iisexpresstray.exe
%User Temp%\authanon.dll
%User Temp%\authbas.dll
%User Temp%\authcert.dll
%User Temp%\authmap.dll
%User Temp%\authsspi.dll
%User Temp%\browscap.dll
%User Temp%\cachtokn.dll
%User Temp%\IisExpressadminCmd.resources.dll
%User Temp%\iisexpresshelper.dll
%User Temp%\iisexpresstray.dll
%User Temp%\IisExpressAdminCmd.exe.config
%User Temp%\iisexpress.exe.manifest
%User Temp%\iisexpressshim.sdb
%User Temp%\nsb78C8.tmp\welcome.bmp
%User Temp%\nsb78C8.tmp\header.bmp
%User Temp%\nsb78C8.tmp\Eula.txt
%User Temp%\nsb78C8.tmp\nsDialogs.dll
%User Temp%\nsb78C8.tmp\System.dll
%User Startup%\leer.vbs
Once located, select the file then press SHIFT+DELETE to delete it.
Repeat the said steps for all files listed.
*Note: Read the following Microsoft page if these steps do not work on Windows 7.

Step 5

Restart in normal mode and scan your computer with your Trend Micro product for files detected as COINMINER.WIN32.TEVEPLUGS.THAOODAH. 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.

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