Analysis by: Leidryn Saludez
ALIASES:

Win32:Evo-gen [Trj] (AVAST)

 PLATFORM:

Windows

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

Canal de infección 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

Tamaño del archivo 6,401,596 bytes
Tipo de archivo EXE
Fecha de recepción de las muestras iniciales 19 Dec 2024
Carga útil Connects to URLs/IPs, Modifies system registry, Terminates processes

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 adds the following mutexes to ensure that only one of its copies runs at any one time:

  • winrar8PROMEMEKGAmaV3_2_8

Process Termination

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

  • ollydbg.exe
  • processhacker.exe
  • tcpview.exe
  • filemon.exe
  • procmon.exe
  • regmon.exe
  • procexp.exe
  • ida.exe
  • ida64.exe
  • binaryninja.exe
  • immunitydebugger.exe
  • wireshark.exe
  • dumpcap.exe
  • hookexplorer.exe
  • importrec.exe
  • petools.exe
  • lordpe.exe
  • sysinspector.exe
  • proc_analyzer.exe
  • sysanalyzer.exe
  • sniff_hit.exe
  • windbg.exe
  • joeboxcontrol.exe
  • joeboxserver.exe
  • apimonitor.exe
  • apimonitor-x86.exe
  • apimonitor-x64.exe
  • x32dbg.exe
  • x64dbg.exe
  • x96dbg.exe
  • cheatengine.exe
  • scylla.exe
  • charles.exe
  • cheatengine-x86_64.exe
  • reclass.net.exe

Download Routine

This Trojan connects to the following website(s) to download and execute a malicious file:

  • http://{BLOCKED}.{BLOCKED}.{BLOCKED}..33/thebig/stail.exe
  • http://{BLOCKED}mpar-auto-orice-tip.ro/downloads/67065227a0640_rrrrrrrr.exe
  • http://{BLOCKED}ernisar.com/lopsa/67057ae45a898_swe_received.exe
  • http://{BLOCKED}iteterbaru.xyz/css/54f0fa329a53.exe
  • http://{BLOCKED}nmccrea.com/web/67079aecc452b_xin.exe

Other Details

This Trojan adds the following registry keys:

HKEY_CURRENT_USER\SOFTWARE\dmdsaodgmarksmdkgsa

  SOLUTION

Motor de exploración mínimo 9.800
Primer archivo de patrones de VSAPI 19.786.02
Primera fecha de publicación de patrones de VSAPI 19 Dec 2024
Versión de patrones OPR de VSAPI 19.787.00
Fecha de publicación de patrones OPR de VSAPI 20 Dec 2024

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

Delete this registry key

[ Learn More ]

Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.

 
  • HKEY_CURRENT_USER\SOFTWARE\dmdsaodgmarksmdkgsa

Step 4

Scan your computer with your Trend Micro product to delete files detected as Trojan.Win32.RISELOADER.THLAIBD. 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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