Analysis by: Raighen Sanchez

 PLATFORM:

Windows

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

  • Threat Type: Trojan Spy

  • Destructiveness: No

  • Encrypted: Yes

  • In the wild: Yes

  OVERVIEW

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 does not have any propagation routine.

It does not have any backdoor routine.

  TECHNICAL DETAILS

File Size: 190,303 bytes
File Type: BAT
Memory Resident: Yes
Initial Samples Received Date: 04 Aug 2025
Payload: Connects to URLs/IPs, Drops files, 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.

Installation

This Trojan Spy drops the following copies of itself into the affected system:

  • %User Profile%\aoc.bat

(Note: %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name} on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)

Propagation

This Trojan Spy does not have any propagation routine.

Backdoor Routine

This Trojan Spy does not have any backdoor routine.

Rootkit Capabilities

This Trojan Spy does not have rootkit capabilities.

Process Termination

This Trojan Spy terminates the following processes if found running in the affected system's memory:

  • chrome
  • firefox
  • msedge
  • brave
  • Foxmail

Information Theft

This Trojan Spy gathers the following data:

  • Public IP Address
  • Geolocation
  • Hostname
  • Username
  • Current Date and Time
  • Email Address
  • Email Password
  • Cookies
  • Credit Card Information
  • Autofill Passwords
  • Browser History
  • Browser Downloads
  • Clipboard Data
  • Keystrokes

Stolen Information

This Trojan Spy sends the gathered information via HTTP POST to the following URL:

  • http://v{BLOCKED}.com:8081
  • http://a{BLOCKED}s.org:8081
  • http://an{BLOCKED}my:8081
  • https://api.t{BLOCKED}t/sendMessage?chat_id={chat id}&text={stolen information}

Other Details

This Trojan Spy connects to the following URL(s) to get the affected system's IP address:

  • http://c{BLOCKED}.org/

It does the following:

  • It patches the Antimalware Scan Interface (AMSI) to disable security features of the affected system.
  • It patches Event Tracing for Windows (ETW) to disable event logging of the affected system.
  • It loads the following file in the memory:
    • Aubriella.exe → VIPKeylogger Payload
  • It connects to the following URL to get the affected system's geolocation:
    • https://r{BLOCKED}.org/xml/{public ip address of system}
  • It steals information from the following web browsers:
    • Google Chrome
    • CocCoc
    • Tencent QQ Browser
    • Orbitum
    • Amigo
    • Xpom
    • Kometa
    • Nichrome
    • Slimjet
    • Iridium
    • Vivaldi
    • Chromium
    • GhostBrowser
    • CentBrowser
    • Xvast
    • Chedot
    • SuperBird
    • 360Browser
    • 360Chrome
    • Comodo
    • Brave
    • Torch Browser
    • UCBrowser
    • Blisk
    • Epic Privacy Browser
    • AVAST Software
    • Kinza
    • BlackHawk
    • Citrio
    • Uran
    • Coowon
    • 7Star
    • QIP Surf
    • ChromePlus
    • Sputnik
    • Microsoft Edge
    • Opera
    • Liebao7
    • SlimBrowser
    • Mozilla Firefox
    • Mozilla SeaMonkey
  • It steals information from the following email applications:
    • Outlook
    • Foxmail
    • Thunderbird
    • PostBoxApp
  • It checks if the gathered information contains the following strings:
    • 8{BLOCKED}0
    • 6{BLOCKED}9
    • 1{BLOCKED}1
    • 6{BLOCKED}9
    • 3.{BLOCKED}7
    • WALKER

NOTES:

It does not exploit any vulnerability.

  SOLUTION

Minimum Scan Engine: 9.800
FIRST VSAPI PATTERN FILE: 20.410.06
FIRST VSAPI PATTERN DATE: 22 Aug 2025
VSAPI OPR PATTERN File: 20.411.00
VSAPI OPR PATTERN Date: 23 Aug 2025

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 this file

[ 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.
  •  %User Profile%\aoc.bat

Step 4

Scan your computer with your Trend Micro product to delete files detected as TrojanSpy.BAT.VIPKEYLOGGER.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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