Overview

overview

10

Static

static

3

fcd92f934d...4b.exe

windows7-x64

10

fcd92f934d...4b.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    fcd92f934da023a44fcae05f084bd6da271bb00267bc5af6e2eb39b7a33b4e4b.exe

  • Size

    372KB

  • Sample

    250208-rmk1zszkfs

  • MD5

    a857f74a40917867bc4a8edd640ed5b4

  • SHA1

    40afea41b3a6a2bc9e111a86d83d4fc7648043d8

  • SHA256

    fcd92f934da023a44fcae05f084bd6da271bb00267bc5af6e2eb39b7a33b4e4b

  • SHA512

    1b0388aefa050816a246b1cf0bb6cda0813d422cf4d836810f1f2d95259538e70da2049d8feccfbeabbe2722aa70813fd7f8afce22e3e88a77412624baf235c7

  • SSDEEP

    6144:tpdgUkQx+HXGidCzj8LBb8Rw5Jdypyf6aCXYfhiau:tLqQx+H2i+8LBNbdypazCXYs

Score
10/10
remcostinodiscoverypersistencerat

Malware Config

Extracted

Family

remcos

Version

2.4.3 Pro

Botnet

TINo

C2

185.140.53.140:2404

Attributes
  • audio_folder

    audio

  • audio_path

    %AppData%

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    5

  • copy_file

    remcos.exe

  • copy_folder

    remcos

  • delete_file

    true

  • hide_file

    false

  • hide_keylog_file

    true

  • install_flag

    true

  • install_path

    %AppData%

  • keylog_crypt

    true

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    Remcos-5S9O07

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    1

  • startup_value

    remcos

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Targets

    • Target

      fcd92f934da023a44fcae05f084bd6da271bb00267bc5af6e2eb39b7a33b4e4b.exe

    • Size

      372KB

    • MD5

      a857f74a40917867bc4a8edd640ed5b4

    • SHA1

      40afea41b3a6a2bc9e111a86d83d4fc7648043d8

    • SHA256

      fcd92f934da023a44fcae05f084bd6da271bb00267bc5af6e2eb39b7a33b4e4b

    • SHA512

      1b0388aefa050816a246b1cf0bb6cda0813d422cf4d836810f1f2d95259538e70da2049d8feccfbeabbe2722aa70813fd7f8afce22e3e88a77412624baf235c7

    • SSDEEP

      6144:tpdgUkQx+HXGidCzj8LBb8Rw5Jdypyf6aCXYfhiau:tLqQx+H2i+8LBNbdypazCXYs

    Score
    10/10
    remcostinodiscoverypersistencerat

    • Modifies WinLogon for persistence

      persistence

    • Remcos

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

      ratremcos

    • Remcos family

      remcos

    • Downloads MZ/PE file

    • 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

    • Modifies WinLogon

      persistence

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Tasks