General

  • Target

    18a284f9269def1de29b66d8c26b53ea361c286cd4a2e981ea0cd53032a620a9

  • Size

    2.3MB

  • Sample

    240925-xqvmgsvgjb

  • MD5

    329ae5cbe461e97d9ff4b20a0147ff55

  • SHA1

    bf8bf68d19980d63a779c1377a96459068d2940a

  • SHA256

    18a284f9269def1de29b66d8c26b53ea361c286cd4a2e981ea0cd53032a620a9

  • SHA512

    68b801614d9f78ba28676a906601610d0a9d62dbd529d0567f6b0f28aa2ee7e96428009c0c925a7af13b312be7e50257da2259a0e4f8f4efbd66d526692bd9b0

  • SSDEEP

    24576:pD39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPjYF49rO/B:pp7E+QrFUBgq2m

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

Botnet

Host

C2

213.183.58.19:4000

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

    false

  • hide_file

    false

  • hide_keylog_file

    true

  • install_flag

    false

  • install_path

    %AppData%

  • keylog_crypt

    true

  • keylog_file

    read.dat

  • keylog_flag

    false

  • keylog_folder

    CastC

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    remcos_sccafsoidz

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screens

  • screenshot_path

    %AppData%

  • screenshot_time

    1

  • startup_value

    remcos

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Extracted

Family

remcos

Botnet

Host

C2

213.183.58.19:4000

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

    false

  • hide_file

    false

  • hide_keylog_file

    true

  • install_flag

    false

  • install_path

    %AppData%

  • keylog_crypt

    true

  • keylog_file

    read.dat

  • keylog_flag

    false

  • keylog_folder

    CastC

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    remcos_sccafsoidz

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screens

  • screenshot_path

    %AppData%

  • screenshot_time

    1

  • startup_value

    remcos

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Targets

    • Target

      18a284f9269def1de29b66d8c26b53ea361c286cd4a2e981ea0cd53032a620a9

    • Size

      2.3MB

    • MD5

      329ae5cbe461e97d9ff4b20a0147ff55

    • SHA1

      bf8bf68d19980d63a779c1377a96459068d2940a

    • SHA256

      18a284f9269def1de29b66d8c26b53ea361c286cd4a2e981ea0cd53032a620a9

    • SHA512

      68b801614d9f78ba28676a906601610d0a9d62dbd529d0567f6b0f28aa2ee7e96428009c0c925a7af13b312be7e50257da2259a0e4f8f4efbd66d526692bd9b0

    • SSDEEP

      24576:pD39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPjYF49rO/B:pp7E+QrFUBgq2m

    • Remcos

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

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Adds Run key to start application

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks