General

  • Target

    seethebestthingswhichhappenedentiretimewithgreattimebacktohere.hta

  • Size

    178KB

  • Sample

    241118-tccb7szcqc

  • MD5

    2d71e3e87e2ea2945dcc2571b74fdb43

  • SHA1

    a338df9a850b1c37528e1b517786285c216cf5e0

  • SHA256

    0557fb02097645b6ec955298be44333a49f07f61dbcfdce99a78038f1cd4c1d4

  • SHA512

    8e9fca6b445cbec531540059dac5e287cef1e1f53e0c1afde7480e9bba3a0e4f532f7637bbf0dc79c34d179c3524fdccfc87933b00abd117a0437c59807dbeab

  • SSDEEP

    96:4vCl177OuKTWYEuKTGuC/TVjn0vflihuKTfuKTNAnuKTUQ:4vCld7OTTbETT5C/TCqTTfTTNeTTUQ

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
ps1.dropper

https://1017.filemail.com/api/file/get?filekey=2Aa_bWo9Reu45t7BU1kVgsd9pT9pgSSlvStGrnTICfFhmTKj3LC6SQtIcOc_T35w&pk_vid=fd4f614bb209c62c1730945176a0904f

exe.dropper

https://1017.filemail.com/api/file/get?filekey=2Aa_bWo9Reu45t7BU1kVgsd9pT9pgSSlvStGrnTICfFhmTKj3LC6SQtIcOc_T35w&pk_vid=fd4f614bb209c62c1730945176a0904f

Extracted

Family

remcos

Botnet

RemoteHost

C2

nextnewupdationsforu.duckdns.org:14645

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-EC111K

  • 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

      seethebestthingswhichhappenedentiretimewithgreattimebacktohere.hta

    • Size

      178KB

    • MD5

      2d71e3e87e2ea2945dcc2571b74fdb43

    • SHA1

      a338df9a850b1c37528e1b517786285c216cf5e0

    • SHA256

      0557fb02097645b6ec955298be44333a49f07f61dbcfdce99a78038f1cd4c1d4

    • SHA512

      8e9fca6b445cbec531540059dac5e287cef1e1f53e0c1afde7480e9bba3a0e4f532f7637bbf0dc79c34d179c3524fdccfc87933b00abd117a0437c59807dbeab

    • SSDEEP

      96:4vCl177OuKTWYEuKTGuC/TVjn0vflihuKTfuKTNAnuKTUQ:4vCld7OTTbETT5C/TCqTTfTTNeTTUQ

    • 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

    • Command and Scripting Interpreter: PowerShell

      Run Powershell and hide display window.

    • Evasion via Device Credential Deployment

    • Uses browser remote debugging

      Can be used control the browser and steal sensitive information such as credentials and session cookies.

    • Checks computer location settings

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

    • Accesses Microsoft Outlook accounts

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks