Analysis by: Carlos Villegas Madrid
ALIASES:

Win64/PSW.Agent.DL trojan (NOD32)

 PLATFORM:

Windows

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

  • Threat Type: Trojan Spy

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

Infection Channel: Dropped by other malware, Downloaded from the Internet

This Trojan Spy 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: 1,182,208 bytes
File Type: DLL
Initial Samples Received Date: 31 Mar 2023
Payload: Collects system information, Steals information

Arrival Details

This Trojan Spy arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Information Theft

This Trojan Spy gathers the following data:

  • HostName
  • DomainName
  • OsVersion

Other Details

This Trojan Spy does the following:

  • It must be loaded on a specific executable in order to continue to its malicious routine.
  • It checks the existence of its configuration file named "config.json" under a folder 3CXDesktopApp.
  • It retrieves the last 500 URLs and title columns listed on the browser history of the following browsers:
    • Chrome
    • Edge
    • Brave
    • Firefox
  • It passes the retrieved data in text string format to its loader executable.

  SOLUTION

Minimum Scan Engine: 9.800
FIRST VSAPI PATTERN FILE: 18.354.02
FIRST VSAPI PATTERN DATE: 31 Mar 2023
VSAPI OPR PATTERN File: 18.355.00
VSAPI OPR PATTERN Date: 01 Apr 2023

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

Identify and terminate files detected as TrojanSpy.Win64.ICONICSTEALER.THCCABC

[ Learn More ]
  1. Windows Task Manager may not display all running processes. In this case, please use a third-party process viewer, preferably Process Explorer, to terminate the malware/grayware/spyware file. You may download the said tool here.
  2. If the detected file is displayed in either Windows Task Manager or Process Explorer but you cannot delete it, restart your computer in safe mode. To do this, refer to this link for the complete steps.
  3. If the detected file is not displayed in either Windows Task Manager or Process Explorer, continue doing the next steps.

Step 3

Scan your computer with your Trend Micro product to delete files detected as TrojanSpy.Win64.ICONICSTEALER.THCCABC. 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.