Author: Alyssa Christelle Ramos   
 

PowerShell/TrojanDownloader.Agent.DV trojan(NOD32)

 PLATFORM:

Windows

 OVER ALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:
 INFORMATION EXPOSURE
Low
Medium
High
Critical

  • Threat Type:
    Trojan

  • Destructiveness:
    No

  • Encrypted:
    No

  • In the wild:
    Yes

  OVERVIEW

INFECTION CHANNEL: 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.

However, as of this writing, the said sites are inaccessible.

  TECHNICAL DETAILS

File size: 145 bytes
File type: PS1
Memory resident: No
INITIAL SAMPLES RECEIVED DATE: 01 ноября 2020
PAYLOAD: Connects to URLs/IPs

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.

Download Routine

This Trojan connects to the following website(s) to download and execute a malicious file:

  • https://{BLOCKED}uphelper.com/UpdateSecureWindowsDefender

Other Details

However, as of this writing, the said sites are inaccessible.

  SOLUTION

Minimum scan engine: 9.800
First VSAPI Pattern File: 16.322.08
First VSAPI Pattern Release Date: 01 ноября 2020
VSAPI OPR PATTERN-VERSION: 16.323.00
VSAPI OPR PATTERN DATE: 02 ноября 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

Scan your computer with your Trend Micro product to delete files detected as Trojan.PS1.BAZALOADER.YXAK-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:


Did this description help? Tell us how we did.