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Ransom.Win32.NEMTY.D

October 21, 2019
 ALIASES:

TrojanDownloader:Win32/Bandit.MS!MTB (Microsoft); GenericRXIU-OE!06A28702D2B3 (McAfee); Trojan.Win32.Zenpak.lnf (Kaspersky); Troj/Nemty-D (Sophos); Trojan.Win32.Generic!BT (Sunbelt)

 PLATFORM:

Windows

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 REPORTED INFECTION:

  • Threat Type: Ransomware

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW


This Ransomware 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:

268,800 bytes

File Type:

EXE

Memory Resident:

Yes

Initial Samples Received Date:

21 Oct 2019

Arrival Details

This Ransomware 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 Ransomware adds the following processes:

  • taskkill /f /im sql.*
  • taskkill /f /im winword.*
  • taskkill /f /im wordpad.*
  • taskkill /f /im outlook.*
  • taskkill /f /im thunderbird.*
  • taskkill /f /im oracle.*
  • taskkill /f /im excel.*
  • taskkill /f /im onenote.*
  • taskkill /f /im virtualboxvm.*
  • taskkill /f /im node.*
  • taskkill /f /im QBW32.*
  • taskkill /f /im WBGX.*
  • taskkill /f /im Teams.*
  • taskkill /f /im Flow.*
  • net stop DbxSvc
  • net stop OracleServiceXE
  • net stop OracleXETNSListener
  • net stop AcrSch2Svc
  • net stop AcronisAgent
  • %System%\net1 stop DbxSvc
  • %System%\net1 stop OracleServiceXE
  • %System%\net1 stop OracleXETNSListener
  • net stop Apache2.4
  • %System%\net1 stop AcrSch2Svc
  • %System%\net1 stop AcronisAgent
  • net stop SQLWriter
  • %System%\net1 stop Apache2.4
  • net stop MSSQL$SQLEXPRESS
  • net stop MSSQLServerADHelper100
  • %System%\net1 stop SQLWriter
  • net stop MongoDB
  • %System%\net1 stop MSSQL$SQLEXPRESS
  • net stop SQLAgent$SQLEXPRESS
  • %System%\net1 stop MSSQLServerADHelper100
  • net stop SQLBrowser
  • %System%\net1 stop MongoDB
  • net stop CobianBackup11
  • %System%\net1 stop SQLAgent$SQLEXPRESS
  • net stop cbVSCService11
  • %System%\net1 stop SQLBrowser
  • net stop QBCFMontorService
  • %System%\net1 stop CobianBackup11
  • net stop QBVSS
  • %System%\net1 stop cbVSCService11
  • net stop
  • %System%\net1 stop QBCFMontorService
  • %System%\net1 stop QBVSS
  • %System%\net1 stop
  • schtasks.exe /create /sc onstart /tn "_NEMTY_ROXQ454_" /tr "%User Profile%\AdobeUpdate.exe"
  • vssadmin.exe delete shadows /all /quiet
  • %System%\Wbem\WMIC.exe wmic shadowcopy delete

(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).)

Other Details

This Ransomware connects to the following possibly malicious URL:

  • http://api.{BLOCKED}y.org
  • http://api.{BLOCKED}p.com/v2/free/8.36.123.207/countryName
  • http://{BLOCKED}y.hk

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 Ransom.Win32.NEMTY.D

[ 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 3

Scan your computer with your Trend Micro product to delete files detected as Ransom.Win32.NEMTY.D. 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 4

Restore encrypted files from backup.


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