Overview

overview

10

Static

static

1

PURCHASE O...ST.xls

windows7-x64

10

PURCHASE O...ST.xls

windows10-2004-x64

1

Sharing

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General

  • Target

    PURCHASE ORDER_REQUEST.xla

  • Size

    243KB

  • Sample

    240521-htznaacb97

  • MD5

    c0131de013ab7ff784f3fbe434f26730

  • SHA1

    94a4a10b98a4597e8fd640254291700db4efe1bd

  • SHA256

    483eef90751d6677489055c3049fe20f2d785acdc3e735a9e213fedaedaf49db

  • SHA512

    ab81b78bd00492aa04c73a233763d015860406869139f666463e601873c9933ebe3d50ba6fae661991fd3b12571589efabda2ead44e435039a608872d61a145b

  • SSDEEP

    6144:se4UcLe0JOqPQZR8MDdATCR3tS+aqgvCZ8Yan+gC:iUP/qPQZR8MxAm/SL9n+gC

Score
10/10
remcosremotehostexecutionpersistencerat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

freshstartrmcdns.duckdns.org:14645

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-H4P1H4

  • 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

      PURCHASE ORDER_REQUEST.xla

    • Size

      243KB

    • MD5

      c0131de013ab7ff784f3fbe434f26730

    • SHA1

      94a4a10b98a4597e8fd640254291700db4efe1bd

    • SHA256

      483eef90751d6677489055c3049fe20f2d785acdc3e735a9e213fedaedaf49db

    • SHA512

      ab81b78bd00492aa04c73a233763d015860406869139f666463e601873c9933ebe3d50ba6fae661991fd3b12571589efabda2ead44e435039a608872d61a145b

    • SSDEEP

      6144:se4UcLe0JOqPQZR8MDdATCR3tS+aqgvCZ8Yan+gC:iUP/qPQZR8MxAm/SL9n+gC

    Score
    10/10
    remcosremotehostexecutionpersistencerat

    • Remcos

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

      ratremcos

    • Blocklisted process makes network request

    • Command and Scripting Interpreter: PowerShell

      Run Powershell and hide display window.

      execution

    • Abuses OpenXML format to download file from external location

    • Adds Run key to start application

      persistence

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Tasks