General

  • Target

    e0adf621d598065f9833243390df1aa0N

  • Size

    2.1MB

  • Sample

    240914-aa7wjswdqr

  • MD5

    e0adf621d598065f9833243390df1aa0

  • SHA1

    b546d2b828bc1291c53318d68c34de3f149b25a5

  • SHA256

    fdd537629a777eb117900f86855e71df1f0bb5b53349d682030787bef3d5dd3b

  • SHA512

    0f2726103b6b0cee83107253508e5871a2a47ae4d23420962e034387fd20dbf172fe51e7fdf591cbd7298c907c92a51f23ecacc2b6662f83484ec9333bfc8890

  • SSDEEP

    24576:CD39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPjYF4avnXJJJK:Cp7E+QrFUBgq2Sns

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

      e0adf621d598065f9833243390df1aa0N

    • Size

      2.1MB

    • MD5

      e0adf621d598065f9833243390df1aa0

    • SHA1

      b546d2b828bc1291c53318d68c34de3f149b25a5

    • SHA256

      fdd537629a777eb117900f86855e71df1f0bb5b53349d682030787bef3d5dd3b

    • SHA512

      0f2726103b6b0cee83107253508e5871a2a47ae4d23420962e034387fd20dbf172fe51e7fdf591cbd7298c907c92a51f23ecacc2b6662f83484ec9333bfc8890

    • SSDEEP

      24576:CD39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPjYF4avnXJJJK:Cp7E+QrFUBgq2Sns

    • Remcos

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

    • Credentials from Password Stores: Credentials from Web Browsers

      Malicious Access or copy of Web Browser Credential store.

    • 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