General

  • Target

    4d27a5b289b20ed90da413356202928932d7742a39f3c1d4ecb6ac9d267b91ef

  • Size

    32KB

  • Sample

    240930-l7kcasyhrl

  • MD5

    a705ece8d09154e3bd9eab1d26e522ce

  • SHA1

    9f79e2f5703c255b115d0847d418b3dd5b9946ed

  • SHA256

    4d27a5b289b20ed90da413356202928932d7742a39f3c1d4ecb6ac9d267b91ef

  • SHA512

    ff5e05a4976151b4c32f7214a63bfab25f6e7ae030762c8ebb8bf21da36da0ec7ccffebf831812b2e02bd879095e968a98f47732be517681c06f64f1ad817a11

  • SSDEEP

    768:qYujBqJJY8zyJ82fY3FEsxXAIkwyp4Gl4WxLlR7A94y51FV:qBjJ8eCEMhXAD74Gl4YlRA2u1FV

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

a458386d9.duckdns.org:3256

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    remcos.exe

  • delete_file

    false

  • hide_file

    true

  • hide_keylog_file

    false

  • install_flag

    false

  • keylog_crypt

    true

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-WDQFG0

  • 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

      Faktura_82666410_1361590461·pdf.vbe

    • Size

      74KB

    • MD5

      f1a0355012d13febdfb56ee8d2b38012

    • SHA1

      38fb764e45b496b63b7a49713fac2b411cfc524b

    • SHA256

      670cb64bd0bbb0baf70d835715afa71ab16e20b3b409e66a2fd5fedfdb375f2b

    • SHA512

      5b2b82e2b7fef9f2d1725ee2a13a98c415880abb41e5c7c7d3fedaed67b7b3decc616f5f12ae9231859f01ca56b31fcf16d0da4b90904a740ad8ba8a882b27fa

    • SSDEEP

      1536:spE42QeC4Ud8kA8fEXzY+gRj+u6/GgRIHSHMy+eQ74Zf:sprLeyAsEtu6uKAO5f

    • Remcos

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

    • Blocklisted process makes network request

    • Checks computer location settings

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

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

    • Legitimate hosting services abused for malware hosting/C2

    • Network Service Discovery

      Attempt to gather information on host's network.

    • Suspicious use of NtCreateThreadExHideFromDebugger

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks