Overview

overview

10

Static

static

10

ApiUpdater.exe

windows7-x64

10

ApiUpdater.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    ApiUpdater.exe

  • Size

    469KB

  • Sample

    250124-hs7x9swkhw

  • MD5

    ebf341ab1088ab009a9f9cf06619e616

  • SHA1

    a31d5650c010c421fa81733e4841cf1b52d607d9

  • SHA256

    7422bc2c77e70c2e90c27d030a13eb3adf0bcfc1ef2bc55b62871181af5cd955

  • SHA512

    40c1481642f8ad2fed9514d0968a43151a189c61e53d60990183e81c16891cdd7a0983568b2910dc8a9098a408136468cff5660d0607cf06331275937c1f60e1

  • SSDEEP

    12288:Wmnk7iLJbpIpiRL6I2WhSKQ9ZsfZQSin9:uiLJbpI7I2WhQqZ7i9

Score
10/10
remcosremotehostdefense_evasiondiscoverypersistencerattrojan

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

else-directors.gl.at.ply.gg:56448

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    $77-Bitdefender.exe

  • copy_folder

    Bitdefender

  • delete_file

    true

  • hide_file

    true

  • 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-Z3DS2J

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    VisualStudioServer

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Targets

    • Target

      ApiUpdater.exe

    • Size

      469KB

    • MD5

      ebf341ab1088ab009a9f9cf06619e616

    • SHA1

      a31d5650c010c421fa81733e4841cf1b52d607d9

    • SHA256

      7422bc2c77e70c2e90c27d030a13eb3adf0bcfc1ef2bc55b62871181af5cd955

    • SHA512

      40c1481642f8ad2fed9514d0968a43151a189c61e53d60990183e81c16891cdd7a0983568b2910dc8a9098a408136468cff5660d0607cf06331275937c1f60e1

    • SSDEEP

      12288:Wmnk7iLJbpIpiRL6I2WhSKQ9ZsfZQSin9:uiLJbpI7I2WhQqZ7i9

    Score
    10/10
    remcosremotehostdefense_evasiondiscoverypersistencerattrojan

    • Remcos

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

      ratremcos

    • Remcos family

      remcos

    • UAC bypass

      defense_evasiontrojan

    • Adds policy Run key to start application

      persistence

    • Checks computer location settings

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

    • Deletes itself

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Tasks