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Trojan.INF.OTORUN.H

July 15, 2022
 ALIASES:

VirTool:INF/Autorun.gen!F [generic] (MICROSOFT)

 PLATFORM:

Windows

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

  • 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.

  TECHNICAL DETAILS

File Size:

129 bytes

File Type:

INF

Initial Samples Received Date:

14 Jul 2022

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:

  • {Current Drive}\a.exe

Propagation

The said .INF file contains the following strings:

[autorun]
shellexecute=a.exe
action=Open folder to view files
shell\default=Open
shell\default\command=a.exe
shell=default

  SOLUTION

Minimum Scan Engine:

9.800

FIRST VSAPI PATTERN FILE:

17.686.08

FIRST VSAPI PATTERN DATE:

14 Jul 2022

VSAPI OPR PATTERN File:

17.687.00

VSAPI OPR PATTERN Date:

15 Jul 2022

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

Search and delete AUTORUN.INF files created by Trojan.INF.OTORUN.H that contain these strings

[ Learn More ]

[autorun]
shellexecute=a.exe
action=Open folder to view files
shell\default=Open
shell\default\command=a.exe
shell=default

Step 3

Scan your computer with your Trend Micro product to delete files detected as Trojan.INF.OTORUN.H. 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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