arrow_back
search
close

Trojan.Win32.NUMANDO.DLDS

April 14, 2020
 Analysis by: Clive Fuentebella
 ALIASES:

W32/OLE2.ALIEN (FORTINET); Win32/Spy.Numando.L (NOD32)

 PLATFORM:

Windows

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

Infection Channel:

Downloaded from the Internet, Dropped by other malware

This Trojan 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:

1,022,976 bytes

File Type:

Other

Memory Resident:

No

Initial Samples Received Date:

09 Apr 2020

Payload:

Displays graphics/image, Drops files

Arrival Details

This Trojan 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 Trojan drops the following files:

  • %AppDataLocal%\Microsoft Corporation\Sistemas Impressoes\NvSmartMax.dll (detected as TrojanSpy.Win32.NUMANDO.MSIDLDT)
  • %AppDataLocal%\Microsoft Corporation\Sistemas Impressoes\ssleay32.dll
  • %AppDataLocal%\Microsoft Corporation\Sistemas Impressoes\libeay32.dll
  • %AppDataLocal%\Microsoft Corporation\Sistemas Impressoes\ShotGun.exe (loads NvSmartMax.dll)

(Note: %AppDataLocal% is the Local Application Data folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Application Data on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)

It adds the following processes:

  • "%System%\msiexec.exe" /i "{Malware file path and name}"
  • %AppDataLocal%\Microsoft Corporation\Sistemas Impressoes\ShotGun.exe

(Note: %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.. %AppDataLocal% is the Local Application Data folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Application Data on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)

Other Details

This Trojan does the following:

  • It displays the following:

  SOLUTION

Minimum Scan Engine:

9.850

FIRST VSAPI PATTERN FILE:

15.796.01

FIRST VSAPI PATTERN DATE:

09 Apr 2020

VSAPI OPR PATTERN File:

15.797.00

VSAPI OPR PATTERN Date:

10 Apr 2020

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

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.
  • %AppDataLocal%\Microsoft Corporation\Sistemas Impressoes\NvSmartMax.dll
  • %AppDataLocal%\Microsoft Corporation\Sistemas Impressoes\ssleay32.dll
  • %AppDataLocal%\Microsoft Corporation\Sistemas Impressoes\libeay32.dll
  • %AppDataLocal%\Microsoft Corporation\Sistemas Impressoes\ShotGun.exe

Step 4

Scan your computer with your Trend Micro product to delete files detected as Trojan.Win32.NUMANDO.DLDS. 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:


Did this description help? Tell us how we did.