General

  • Target

    BLTLN0124796CMACGM.GZ.gz

  • Size

    860KB

  • Sample

    240924-la2kbayfmn

  • MD5

    4e3132e4f3513fff7d4be81a75969223

  • SHA1

    650c0ba57e4083b9737210abc309a4b423a48c50

  • SHA256

    ec8b5d134fb3669c59733a303ef5a03bb6cc5a02602bce545d4fedda93ea4962

  • SHA512

    e598758a2979bd6f724b272e43b55edd7495ad287193f03ad1f50d8a20367ff8a8bf22382195517549bb361b56f7fb5a3d91e165e3b22f38d9d7c796f31ca5ab

  • SSDEEP

    24576:aeWODCOdvMn6rin7jQSLo6iqG3qdTOAY4MJ9rYAbPbr:aOCOdvQQSu93W674+sAbPbr

Malware Config

Extracted

Family

remcos

Botnet

GeneralWire-Slaves

C2

milliondollar23.duckdns.org:3984

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-TWU43D

  • 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

      BL-TLN0124796CMACGM.scr

    • Size

      915KB

    • MD5

      02d513fa3a4c04f1ffce97c25caccdff

    • SHA1

      853948f7ff1d69a293c4f4617185c24b9859e6dd

    • SHA256

      d00a443bf00b909b32fbd9894462283fca5788e28b96a9e729f43fc4f2ca585a

    • SHA512

      9a9b925e7d5acec5216ecb64f7352a8a27598106452984f08155f2bef640fe1ad93ff3a7869cacfaec2514641740c41fcc0e7e4f0172eaa7072c1c9c05087ab3

    • SSDEEP

      24576:SgW2J4Sl29MaW6EEJJQEtTShtxMwwW7yUVzmoeli:SgjJYSoxtuDxZlyUVzmo

    • Remcos

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

    • Detected Nirsoft tools

      Free utilities often used by attackers which can steal passwords, product keys, etc.

    • NirSoft MailPassView

      Password recovery tool for various email clients

    • NirSoft WebBrowserPassView

      Password recovery tool for various web browsers

    • 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.

    • Reads user/profile data of web browsers

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

    • Accesses Microsoft Outlook accounts

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks