General

  • Target

    remcos_a.exe

  • Size

    469KB

  • Sample

    240911-n5ys1szcjg

  • MD5

    22ce3d0fc9f92829be87f978fc573680

  • SHA1

    2a55144aed0886304b490fbcc623be46a8871065

  • SHA256

    8741e2fc5b709526eaec1e791c56c7d2c65f312940b81e6027bd6ee2b181d940

  • SHA512

    6bcd798e8db887dc0822ba196c2d9efb96fbe604f3728069d0bff04d5862c0d2ac2b4b2d810f310a2ec211e8244ce078b93d72debf427099dbce8f2420d88f4c

  • SSDEEP

    12288:umnk7iLJbpIpiRL6I2WhSKQ9ZsfZQSEn9:WiLJbpI7I2WhQqZ7E9

Malware Config

Extracted

Family

remcos

Botnet

COM Surrogate

C2

stay-daughters.gl.at.ply.gg:43206

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    COM Surrogate.exe

  • copy_folder

    COM Surrogate

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    true

  • install_flag

    true

  • keylog_crypt

    true

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    Windows

  • mouse_option

    false

  • mutex

    Rmc-C5SENV

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    COM Surrogate

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Targets

    • Target

      remcos_a.exe

    • Size

      469KB

    • MD5

      22ce3d0fc9f92829be87f978fc573680

    • SHA1

      2a55144aed0886304b490fbcc623be46a8871065

    • SHA256

      8741e2fc5b709526eaec1e791c56c7d2c65f312940b81e6027bd6ee2b181d940

    • SHA512

      6bcd798e8db887dc0822ba196c2d9efb96fbe604f3728069d0bff04d5862c0d2ac2b4b2d810f310a2ec211e8244ce078b93d72debf427099dbce8f2420d88f4c

    • SSDEEP

      12288:umnk7iLJbpIpiRL6I2WhSKQ9ZsfZQSEn9:WiLJbpI7I2WhQqZ7E9

    • HawkEye

      HawkEye is a malware kit that has seen continuous development since at least 2013.

    • 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

    • Adds Run key to start application

    • Program crash

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks