Analysis by: John Donnie Celestre

ALIASES:

Worm.Win32.AutoRun.cgfw (KASPERSKY); Worm:Win32/Honditost.A (MICROSOFT)

 PLATFORM:

Windows

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

  • Threat Type: Worm

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

This Worm 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: 132,510 bytes
File Type: EXE
Initial Samples Received Date: 22 Nov 2019

Arrival Details

This Worm 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 Worm drops the following files:

  • %Program Files%\Microsoft Office\Office14\html.vbs
  • %System%\aviraasem.txt
  • %System%\coruption.zip
  • %System%\exe.zip
  • %System%\koruptor.html.lnk
  • %System%\lsasvs.dll
  • %System%\msmgr.exe
  • %System%\sharelnk.vbs
  • %System%\sMaD.exe
  • %System%\startup.vbs
  • %System%\utama.txt
  • %System%\yorm.txt
  • %System%\zip.zip
  • %System%\zipping\html.vbs
  • %System%\zipping\HukumanBuatKoruptor.html
  • %System%\zipping\HukumanBuatKoruptor.html.lnk
  • %System%\zipping\para.vbs
  • %System%\zipping\sMaD.jp
  • %User Profile%\2013 vs Nabi Nuh.pif
  • %User Profile%\fltemp.txt
  • %User Startup%\WinCleaner.lnk
  • %Windows%\system\xce\x94 aha \xce\x94\nmlsvc.Ex_
  • %Windows%\system\xce\x94 aha \xce\x94\utama.Ex_
  • %Windows%\system\xce\x94 aha \xce\x94\winmsgr.Ex_
  • %Windows%\system\xce\x94 aha \xce\x94\yorm.Ex_
  • %Windows%\system\xce\x94 aha \xce\x94\zip.Ex_
  • {Removable Drive}:\RECYCLER\con.~\con.smad
  • {Removable Drive}:\RECYCLER\con.A\desktop.ini
  • {Removable Drive}:\RECYCLER\con.~\con.sys\para.vbs
  • {Removable Drive}:\RECYCLER\con.~\desktop.ini
  • {Removable Drive}:\RECYCLER\desktop.ini
  • {Removable Drive}:\RECYCLER\EMAIL_AND_PASSWORD_LISTFbe.HTM

(Note: %Program Files% is the default Program Files folder, usually C:\Program Files in Windows 2000(32-bit), Server 2003(32-bit), XP, Vista(64-bit), 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit) , or C:\Program Files (x86) in Windows XP(64-bit), Vista(64-bit), 7(64-bit), 8(64-bit), 8.1(64-bit), 2008(64-bit), 2012(64-bit) and 10(64-bit).. %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.. %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).. %User Startup% is the current user's Startup folder, which is usually C:\Windows\Profiles\{user name}\Start Menu\Programs\Startup on Windows 98 and ME, C:\WINNT\Profiles\{user name}\Start Menu\Programs\Startup on Windows NT, C:\Documents and Settings\{User name}\Start Menu\Programs\Startup on Windows 2003(32-bit), XP and 2000(32-bit), or C:\Users\{user name}\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit), 10(64-bit).. %Windows% is the Windows folder, where it usually is C:\Windows on all Windows operating system versions.)

It adds the following processes:

  • "%System%\WScript.exe" "%System%\sharelnk.vbs"
  • %System%\sharelnk.vbs
  • %User Profile%\2013 vs Nabi Nuh.pif
  • %System%\msmgr.exe
  • cmd.exe /C copy /B lsasrv.dll+zip.zip lsasvs.dll /y
  • "%System%\WScript.exe" "%System%\zipping\html.vbs"
  • %System%\zipping\html.vbs
  • "%System%\WScript.exe" "%System%\startup.vbs"
  • %System%\startup.vbs
  • "%System%\WScript.exe" "%Program Files%\Microsoft Office\Office14\html.vbs"
  • html.vbs

(Note: %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.. %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).. %Program Files% is the default Program Files folder, usually C:\Program Files in Windows 2000(32-bit), Server 2003(32-bit), XP, Vista(64-bit), 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit) , or C:\Program Files (x86) in Windows XP(64-bit), Vista(64-bit), 7(64-bit), 8(64-bit), 8.1(64-bit), 2008(64-bit), 2012(64-bit) and 10(64-bit).)

It creates the following folders:

  • %Windows%\system\xce\x94 aha \xce\x94
  • %System%\zipping
  • {Removable Drive}:\RECYCLER
  • {Removable Drive}:\RECYCLER\con.A
  • {Removable Drive}:\RECYCLER\con.~
  • {Removable Drive}:\RECYCLER\con.~\con.sys

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

  SOLUTION

Minimum Scan Engine: 9.850
FIRST VSAPI PATTERN FILE: 15.512.05
FIRST VSAPI PATTERN DATE: 22 Nov 2019
VSAPI OPR PATTERN File: 15.513.00
VSAPI OPR PATTERN Date: 23 Nov 2019

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

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

Identify and terminate files detected as Worm.Win32.AUTORUN.INQ

[ Learn More ]
  1. 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.
  2. 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.
  3. If the detected file is not displayed in either Windows Task Manager or Process Explorer, continue doing the next steps.

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.  
  • %Program Files%\Microsoft Office\Office14\html.vbs
  • %System%\aviraasem.txt
  • %System%\coruption.zip
  • %System%\exe.zip
  • %System%\koruptor.html.lnk
  • %System%\lsasvs.dll
  • %System%\msmgr.exe
  • %System%\sharelnk.vbs
  • %System%\sMaD.exe
  • %System%\startup.vbs
  • %System%\utama.txt
  • %System%\yorm.txt
  • %System%\zip.zip
  • %System%\zipping\html.vbs
  • %System%\zipping\HukumanBuatKoruptor.html
  • %System%\zipping\HukumanBuatKoruptor.html.lnk
  • %System%\zipping\para.vbs
  • %System%\zipping\sMaD.jp
  • %User Profile%\2013 vs Nabi Nuh.pif
  • %User Profile%\fltemp.txt
  • %User Startup%\WinCleaner.lnk
  • %Windows%\system\\xce\x94 aha \xce\x94\nmlsvc.Ex_
  • %Windows%\system\\xce\x94 aha \xce\x94\utama.Ex_
  • %Windows%\system\\xce\x94 aha \xce\x94\winmsgr.Ex_
  • %Windows%\system\\xce\x94 aha \xce\x94\yorm.Ex_
  • %Windows%\system\\xce\x94 aha \xce\x94\zip.Ex_
  • {Removable Drive}:\RECYCLER\con.~\con.smad
  • {Removable Drive}:\RECYCLER\con.A\desktop.ini
  • {Removable Drive}:\RECYCLER\con.~\con.sys\para.vbs
  • {Removable Drive}:\RECYCLER\con.~\desktop.ini
  • {Removable Drive}:\RECYCLER\desktop.ini
  • {Removable Drive}:\RECYCLER\EMAIL_AND_PASSWORD_LISTFbe.HTM

Step 5

Scan your computer with your Trend Micro product to delete files detected as Worm.Win32.AUTORUN.INQ. 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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