Analysis by: Mariefher Grace Villanueva
ALIASES:

Win64:Malware-gen (AVAST); Trojan.Generic.40183983 (BITDEFENDER)

 PLATFORM:

Windows

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

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

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 does not have any propagation routine.

  TECHNICAL DETAILS

File Size: 3,915,776 bytes
File Type: EXE
Memory Resident: Yes
Initial Samples Received Date: 14 Jul 2026
Payload: Connects to URLs/IPs, Steals information

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.

Propagation

This Trojan does not have any propagation routine.

Backdoor Routine

This Trojan connects to the following URL(s) to send and receive commands from a remote malicious user:

  • {BLOCKED}.{BLOCKED}.212.252:4446

Rootkit Capabilities

This Trojan does not have rootkit capabilities.

Information Theft

This Trojan gathers the following data:

  • Username
  • Volume serial number

Other Details

This Trojan does the following:

  • Acts as a reverse proxy, relaying network traffic between the remote server and attacker-specified targets through the affected system
  • Runs continuously and attempts to reconnect to the remote server every 180 seconds if the connection fails
  • Disguises itself as a legitimate AVG binary.

It does not exploit any vulnerability.

  SOLUTION

Minimum Scan Engine: 9.800
FIRST VSAPI PATTERN FILE: 21.190.04
FIRST VSAPI PATTERN DATE: 15 Jul 2026
VSAPI OPR PATTERN File: 21.191.00
VSAPI OPR PATTERN Date: 16 Jul 2026

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:

    Troj.Win32.TRX.XXPE50FFF107

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

Scan your computer with your Trend Micro product to delete files detected as Trojan.Win64.COROXY.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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