Overview

overview

10

Static

static

1

pleaseview...pdf.js

windows10-2004-x64

10

pleaseview...pdf.js

windows11-21h2-x64

8

Sharing

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General

  • Target
    pleaseviewstampedimageandconfirmourorder_Doc12234567754_678787899 pdf.js
  • Size 2KB
  • Sample250423-tsk92ssvf1
  • SHA256 d65c7d2e8c2336f34fc84f6f61a9e1e55c58e0fef0bafbd8b45348d16bb8b591
  • MD5 SHA1 SHA512
Score
10/10
remcosaprildiscoveryexecutionrat

Malware Config

Extracted

Family

  • remcos

Botnet

  • april

C2

  • dum555.duckdns.org:31679

Attributes
  • audio_folder

    MicRecords

  • 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

    false

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-CSJTNI

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    Remcos

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Targets

    • Target
      pleaseviewstampedimageandconfirmourorder_Doc12234567754_678787899 pdf.js
    • Size 2KB
    • SHA256 d65c7d2e8c2336f34fc84f6f61a9e1e55c58e0fef0bafbd8b45348d16bb8b591
    • MD5 SHA1 SHA512
    Score
    10/10
    remcosaprildiscoveryexecutionrat

    • Remcos

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

      ratremcos

    • Remcos family

      remcos

    • Blocklisted process makes network request

    • Command and Scripting Interpreter: PowerShell

      Run Powershell and hide display window.

      execution

    • Checks computer location settings

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

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Tasks