General

  • Target

    createdbestthingswithbetterwaysgivemebestfor.hta

  • Size

    13KB

  • Sample

    250212-x3e3kavmbp

  • MD5

    716aaf1d9cad7adc83165137b0908eef

  • SHA1

    0f14cba90b4ff8c0e096c514692b31e402d456f3

  • SHA256

    8b1b3e1f69d6d339e2b77e1610457544b1774eb184b53b490d37e17667c4dd68

  • SHA512

    39026bcce661a0ed079419732d3acf97ed815f33fc9b29bc5c5013aa0fa5ef82d5a41f66a2b3e104feaa7b2752f0b22b65fcebe02122b4ef48d01387f20a7ec1

  • SSDEEP

    48:3vUzyAm9euUzyLKm9elka93UDmCKpy4MOFpNrnUzygSUzyURxx/m9esvUzyhPG:ctj9AH6F7n2TXw+

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

ugobelube.duckdns.org:1213

Attributes
  • audio_folder

    MicRecords

  • audio_path

    ApplicationPath

  • 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-BASV1H

  • 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

      createdbestthingswithbetterwaysgivemebestfor.hta

    • Size

      13KB

    • MD5

      716aaf1d9cad7adc83165137b0908eef

    • SHA1

      0f14cba90b4ff8c0e096c514692b31e402d456f3

    • SHA256

      8b1b3e1f69d6d339e2b77e1610457544b1774eb184b53b490d37e17667c4dd68

    • SHA512

      39026bcce661a0ed079419732d3acf97ed815f33fc9b29bc5c5013aa0fa5ef82d5a41f66a2b3e104feaa7b2752f0b22b65fcebe02122b4ef48d01387f20a7ec1

    • SSDEEP

      48:3vUzyAm9euUzyLKm9elka93UDmCKpy4MOFpNrnUzygSUzyURxx/m9esvUzyhPG:ctj9AH6F7n2TXw+

    • Remcos

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

    • Remcos family

    • 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

    • Blocklisted process makes network request

    • Boot or Logon Autostart Execution: Active Setup

      Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

    • Downloads MZ/PE file

    • Evasion via Device Credential Deployment

    • Checks computer location settings

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

    • Event Triggered Execution: Component Object Model Hijacking

      Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

    • Executes dropped EXE

    • Accesses Microsoft Outlook accounts

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

    • Installs/modifies Browser Helper Object

      BHOs are DLL modules which act as plugins for Internet Explorer.

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks