Analysis by: Mc Justine De Guzman
 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

Canal de infecção: Dropped by other malware, Downloaded from the Internet

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

Tipo de compactação: 694,784 bytes
Tipo de arquivo: XLS
Residente na memória: No
Data de recebimento das amostras iniciais: 10 Sep 2020
Carga útil: Drops files, Displays message/message boxes

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:

Other Details

This Trojan does the following:

  • It would determine if the system it is running on is 64-bit or 32-bit and will use the architecture appropriate payload based on the result of its checking.
    • rgoc2.dll → If the system it is running on is a 64-bit machine with VBA7
    • rgoc1.dll → If the system it is running on does not satisfy the condition above.
  • It displays the following to lure users into enabling macro content:

  SOLUTION

Mecanismo de varredura mínima: 9.850
Primeiro arquivo padrão VSAPI: 16.224.03
Data do lançamento do primeiro padrão VSAPI: 13 Sep 2020
VSAPI OPR Pattern Version: 16.225.00
VSAPI OPR Pattern veröffentlicht am: 14 Sep 2020

Step 1

Trend Micro Predictive Machine Learning detects and blocks malware at the first sign of its existence, before it executes on your system. When enabled, your Trend Micro product detects this malware under the following machine learning name:

     
    • Downloader.VBA.TRX.XXVBAF01FF009

Step 2

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 3

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 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.
  • %Application Data%\Microsoft\Windows\Templates\rgoc1.dll
  • %Application Data%\Microsoft\Windows\Templates\rgoc2.dll
  • %User Temp%\academl.xlsx
  • %User Temp%\academl.xlsx.zip
  • %User Temp%\rgoc.zip
  • %User Temp%\oleObject1.bin

Step 5

Scan your computer with your Trend Micro product to delete files detected as Trojan.X97M.GETLOADR.THIAOBO. 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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