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Trojan.Win32.FATALRAT.AC

May 19, 2023
 Analysis by: Jayvee Mark Villaroman
 ALIASES:

Trojan:Win32/Malgent!MSR (MICROSOFT)

 PLATFORM:

Windows

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: Yes

  • 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.

  TECHNICAL DETAILS

File Size:

10,520,312 bytes

File Type:

Other

File Compression:

ZIP

Memory Resident:

No

Initial Samples Received Date:

15 May 2023

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.

Other Details

This Trojan connects to the following possibly malicious URL:

  • http://c{BLOCKED}stalleranalytics.com
  • http://1{BLOCKED}nyin.sougou.com

It does the following:

  • It displays as a legitimate installer of Mozilla Firefox

  SOLUTION

Minimum Scan Engine:

9.800

FIRST VSAPI PATTERN FILE:

18.452.04

FIRST VSAPI PATTERN DATE:

18 May 2023

VSAPI OPR PATTERN File:

18.453.00

VSAPI OPR PATTERN Date:

19 May 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

Scan your computer with your Trend Micro product to delete files detected as Trojan.Win32.FATALRAT.AC. 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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