General

  • Target

    a59df37a0613dbed779ef63b1a36ecbf.bin

  • Size

    935KB

  • Sample

    241103-by26ms1crc

  • MD5

    e3f8c2610ab132c3e50a92b0eff94cc7

  • SHA1

    55ba98a5023919ebb5347ba28616ae4927b6508f

  • SHA256

    462f9d9ceeb82bc78344285141a5f3265cc4671d98d1442508a0767470b372c4

  • SHA512

    615ffd8536efa52c94866f830768d60090e417c68ef04ce5e7e1c95cd087ee91161a98917faed0c030487d622f1df7a4664421659a9ee34a93bf09139c203aee

  • SSDEEP

    24576:clzJjT1f+AdsZmAvha4n67l6iBsPkbpNz2VOLV9ALU:C1f9fdsZmAvha/zs6NyVnU

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

85.209.133.15:3310

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-QFR1O5

  • 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

      b4b6159351045ef04f9ba6321722c1c1fd920eac7a3799665d2663775edfa84d.exe

    • Size

      1.0MB

    • MD5

      a59df37a0613dbed779ef63b1a36ecbf

    • SHA1

      4bb55b03b492e3b13ff0ae030af26701734b5cc1

    • SHA256

      b4b6159351045ef04f9ba6321722c1c1fd920eac7a3799665d2663775edfa84d

    • SHA512

      7d742e799de7254403760521821743902a9fb3f65d7961573cc4bdd3189037518daa3986696d15b5cf74ab17bbff7802c22e777dacb024cdfd2c27cb8a6fab46

    • SSDEEP

      24576:crhVXoT8dOIzKDjU2x9TlneDSm+dndQiI3lzcRRN9wV:krMqm/UATReWm+ddQiI1YR

    • Remcos

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

    • Remcos family

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • Checks computer location settings

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

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks