General

  • Target

    b23537aaa971ac525acf0b7359c3f070N.exe

  • Size

    1.1MB

  • Sample

    240727-lva8vsvdqf

  • MD5

    b23537aaa971ac525acf0b7359c3f070

  • SHA1

    ed6ddebbb6f03666b5187729d825049c3845a978

  • SHA256

    03550c6a36f058711b8658422f63a2715f651132c72a6d6f6adcbc2165b56ae4

  • SHA512

    4bcd49ea28ce73d2b97d02558dbf2d73d6d9a90cd9d7db8f0ae6e9173d7ebf12f1fbccc19151495ab1910bf48c9088ed739753d939735181aa682a0fcf79d3c0

  • SSDEEP

    12288:f3l8mDi+ndmDIv3Zdp9j22pqjBTw4VbRGYBitfFBHTQIabY9nQZSCpdbvLRD:O+ngDU3rnDKBMEbRPWFdQ5biQ/pxLRD

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

107.175.229.139:8823

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-2BGC0K

  • 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

      b23537aaa971ac525acf0b7359c3f070N.exe

    • Size

      1.1MB

    • MD5

      b23537aaa971ac525acf0b7359c3f070

    • SHA1

      ed6ddebbb6f03666b5187729d825049c3845a978

    • SHA256

      03550c6a36f058711b8658422f63a2715f651132c72a6d6f6adcbc2165b56ae4

    • SHA512

      4bcd49ea28ce73d2b97d02558dbf2d73d6d9a90cd9d7db8f0ae6e9173d7ebf12f1fbccc19151495ab1910bf48c9088ed739753d939735181aa682a0fcf79d3c0

    • SSDEEP

      12288:f3l8mDi+ndmDIv3Zdp9j22pqjBTw4VbRGYBitfFBHTQIabY9nQZSCpdbvLRD:O+ngDU3rnDKBMEbRPWFdQ5biQ/pxLRD

    • 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.

    • 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

    • Drops startup file

    • 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