Analysis by: Kyra-Melody Gonzales
ALIASES:

Trojan:MSIL/AsyncRAT.BGH!MTB (MICROSOFT), Win32:MalwareX-gen [Misc] (AVAST), Gen:Variant.Genie8DN.25 (BITDEFENDER), MSIL/GenKryptik.FVDD!tr (FORTINET), Trojan.MSIL.CoinMiner (IKARUS), a variant of MSIL/GenKryptik.FZQG trojan (NOD32)

 PLATFORM:

Windows

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

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: 6,792,192 bytes
File Type: EXE
Memory Resident: Yes
Initial Samples Received Date: 13 Oct 2025

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.

Installation

This Trojan drops the following files:

  • %Application Data%\winlogon.exe
  • %Application Data%\svchost.exe
  • %Application Data%\chrome.exe
  • %User Temp%\tmpE34.tmp.bat
  • {Malware File Path}\NetFlix Checker by xRisky v2.exe

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

It adds the following processes:

  • %Application Data%\winlogon.exe
  • {Malware File Path}\NetFlix Checker by xRisky v2.exe
  • %Application Data%\svchost.exe
  • %System%\cmd.exe /c schtasks /create /f /sc onlogon /rl highest /tn "chrome" /tr '"%Application Data%\chrome.exe"' & exit
  • cmd /c ""%User Temp%\tmpE34.tmp.bat""
  • schtasks /create /f /sc onlogon /rl highest /tn "chrome" /tr '"%Application Data%\chrome.exe"'
  • timeout 3
  • %Application Data%\chrome.exe

(Note: %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Roaming on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).. %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.. %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local\Temp on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)

Backdoor Routine

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

  • http://siyatermi.{BLOCKED}.org:17044

Information Theft

This Trojan gathers the following data:

  • System Information:
    • Environment variables
    • Current directory information

Stolen Information

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

  • http://siyatermi.{BLOCKED}:17044

Other Details

This Trojan does the following:

  • Masquerades as a legitimate application named "Netflix Checker by xRisky v22" to deceive users
  • Executes dropped components with hidden windows to avoid detection
  • Uses dynamic DNS for C2 infrastructure to evade domain blocking
  • Drops files masquerading as legitimate Windows system processes (winlogon.exe, svchost.exe)
  • Contacts remote hosts without DNS lookup as an evasion technique

  SOLUTION

Minimum Scan Engine: 9.800
FIRST VSAPI PATTERN FILE: 20.602.03
FIRST VSAPI PATTERN DATE: 24 Nov 2025
VSAPI OPR PATTERN File: 20.603.00
VSAPI OPR PATTERN Date: 25 Nov 2025

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.XXPE50FFF099

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

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 4

Deleting Scheduled Tasks while in Safe Mode

  1. Still in safe mode, the following {Task Name}-{Task to be run} listed should be used in the steps identified below:  
    • Task Name: chrome
    • Task to be run: %Application Data%\chrome.exe
  2. For Windows 7 and Server 2008 (R2) users, click Start>Computer.
    • For Windows 8, 8.1, 10, and Server 2012 users, right-click on the lower left corner of the screen, then click File Explorer.
  3. In the Search Computer/This PC input box, type:
    • %System%\Tasks\{Task Name}
  4. Once located, select the file then press SHIFT+DELETE to delete it.
  5. Open Registry Editor. To do this:
    • For Windows 7 and Server 2008 (R2) users, click the Start button, type regedit in the Search input field, and press Enter.
    • For Windows 8, 8.1, 10, and Server 2012 (R2) users, right-click on the lower left corner of the screen, click Run, type regedit in the text box
  6. In the left panel of the Registry Editor window, double-click the following:
    • HKEY_LOCAL_MACHINE>SOFTWARE>Microsoft>Windows NT>CurrentVersion>Schedule>TaskCache>Tree>{Task Name}
  7. Locate the created entry and take note of the registry value's data:
    • ID={Task Data}
  8. After taking note of the data, delete the registry key:
    • HKEY_LOCAL_MACHINE>SOFTWARE>Microsoft>Windows NT>CurrentVersion>Schedule>TaskCache>Tree>{Task Name}
  9. In the left panel of the Registry Editor window, double-click the following:
    • HKEY_LOCAL_MACHINE>SOFTWARE>Microsoft>Windows NT>CurrentVersion>Schedule>TaskCache>Tasks
  10. Still in the left panel, locate and delete the registry key with the same name as the located Task Data in step #6:
    • ={Task Data}
  11. Close Registry Editor.

Step 5

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.
  • %Application Data%\winlogon.exe
  • %Application Data%\svchost.exe
  • %Application Data%\chrome.exe
  • %User Temp%\tmpE34.tmp.bat
  • {Malware File Path}\NetFlix Checker by xRisky v2.exe

Step 6

Restart in normal mode and scan your computer with your Trend Micro product for files detected as Trojan.MSIL.REDLINE.Q. 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 this Knowledge Base page for more information.

Step 7

Scan your computer with your Trend Micro product to delete files detected as Trojan.MSIL.REDLINE.Q. 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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