General

  • Target

    06112024_0158_NTU 報價請求項目 FMD2024UOS·pdf.vbs.zip

  • Size

    8KB

  • Sample

    241106-cdvrhasgjg

  • MD5

    c6f378ee9e02d98b37a3ed5291ed1bee

  • SHA1

    92dc19f62027daf5acabe5ad938e12e4597b9a0e

  • SHA256

    fd159a5f1594eb2cf854a2ea8dd03846f73e99bfbf725f44d15659f36c29db51

  • SHA512

    6e8b6fc10a97f9683600a20c72c686cc749432440f0f76dbd9ea82400ef950e8ac4c484346e71d165af971359f4f3f1c67c86a98737bbd5c7f3dc40f92a77e1d

  • SSDEEP

    192:60mGDvsh+DlFDwugnXpOiNZOYxn+CHSdm6Bdn+jedD7IPXe09/x9i0Ed:xmfwDTDwppOijOYxnvSdvGKIe2/S

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

a458386d9.duckdns.org:3256

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

    true

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-4EN793

  • 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

      NTU 報價請求項目 FMD2024UOS·pdf.vbs

    • Size

      15KB

    • MD5

      7a8593917a881f736dae40fd3e739aa9

    • SHA1

      86f696ac97647bac9ef92b24e0818a97a70aee53

    • SHA256

      424d1b064b6e0a04e251193013187b35a779473df7411dcc285dc1284cf618d7

    • SHA512

      66ee428b08ac48a8550eeec67d3f41540dfb792e24408bb84a08888c69468dec834d0cff167cb62790f14277d35d173f239ee59b4af1c4fddd6b29b6169ed132

    • SSDEEP

      192:qzb9JpgciToUkIWTErzlS8HIYVFlXQNE7VrMPQ2cV3766aT0VA:SbLuXTiTErZSCH3gNEmyPVA

    • Remcos

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

    • Remcos family

    • UAC bypass

    • 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

    • 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

    • Adds Run key to start application

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

    • Legitimate hosting services abused for malware hosting/C2

    • Suspicious use of NtCreateThreadExHideFromDebugger

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks