Analysis by: Thea Patrice Tajonera
ALIASES:

N/A

 PLATFORM:

Windows

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

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.

It executes then deletes itself afterward.

  TECHNICAL DETAILS

Tamaño del archivo 858 bytes
Tipo de archivo BAT
Residente en memoria No
Fecha de recepción de las muestras iniciales 21 Jun 2021

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 adds the following processes:

  • net share C=C:\ /grant:everyone,FULL
  • net share D=D:\ /grant:everyone,FULL
  • net share E=E:\ /grant:everyone,FULL
  • net share F=F:\ /grant:everyone,FULL
  • net share G=G:\ /grant:everyone,FULL
  • net share H=H:\ /grant:everyone,FULL
  • net share I=I:\ /grant:everyone,FULL
  • net share J=J:\ /grant:everyone,FULL
  • net share L=L:\ /grant:everyone,FULL
  • net share K=K:\ /grant:everyone,FULL
  • net share M=M:\ /grant:everyone,FULL
  • net share X=X:\ /grant:everyone,FULL
  • net share Y=Y:\ /grant:everyone,FULL
  • net share W=W:\ /grant:everyone,FULL
  • net share Z=Z:\ /grant:everyone,FULL
  • net share V=V:\ /grant:everyone,FULL
  • net share O=O:\ /grant:everyone,FULL
  • net share P=P:\ /grant:everyone,FULL
  • net share Q=Q:\ /grant:everyone,FULL
  • net share R=R:\ /grant:everyone,FULL
  • net share S=S:\ /grant:everyone,FULL
  • net share T=T:\ /grant:everyone,FULL

It executes then deletes itself afterward.

  SOLUTION

Motor de exploración mínimo 9.800
Primer archivo de patrones de VSAPI 16.794.08
Primera fecha de publicación de patrones de VSAPI 21 Jun 2021
Versión de patrones OPR de VSAPI 16.795.00
Fecha de publicación de patrones OPR de VSAPI 22 Jun 2021

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

Scan your computer with your Trend Micro product to delete files detected as Trojan.BAT.SHARNET.A. 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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