Overview

overview

10

Static

static

1

SWIFT_3108....JS.js

windows10-2004-x64

10

SWIFT_3108....JS.js

windows11-ltsc_2024-x64

8

Sharing

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General

  • Target
    SWIFT_31082026065887.pdf.JS.js
  • Size 1.5MB
  • Sample260831-kdwb2aybkf
  • SHA256 4ff72666def40cacdb35547c566e2929d8f452a03e98d534bdca8860a9eb56e3
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
donutloaderremcosremotehostdiscoveryexecutionloaderpersistencerat

Malware Config

Extracted

Family

  • remcos

Botnet

  • RemoteHost

C2

  • 141.98.10.129:2404

Attributes
  • audio_folder

    MicRecords

  • audio_path

    ApplicationPath

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    remcos.exe

  • copy_folder

    Remcos

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    true

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-X63JP4

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Targets

    • Target
      SWIFT_31082026065887.pdf.JS.js
    • Size 1.5MB
    • SHA256 4ff72666def40cacdb35547c566e2929d8f452a03e98d534bdca8860a9eb56e3
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    remotehostdiscoveryexecutiondonutloaderremcosloaderpersistencerat

    • Detects DonutLoader

      loader

    • Family: DonutLoader

      DonutLoader is a position-independent code that enables in-memory execution of VBScript, JScript, EXE, DLL files and dotNET assemblies.

      loaderdonutloader

    • Family: Remcos

      Remcos is a closed-source remote control and surveillance software.

      ratremcos

    • Badlisted process makes network request

      Network request originating from process or tool commonly abused by malware.

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

      persistence
    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Tasks