General

  • Target

    980d0b7857091bbaecb3cd4783a4d7ed19548cd63bf8f244e2b0ea7c10812c53.vbs

  • Size

    86KB

  • Sample

    241112-c7cssaskbw

  • MD5

    b395f7c166e901cbb3d4560021b62f1e

  • SHA1

    2ec42e99d3e040aa5dba198b6a258191a7abfd71

  • SHA256

    980d0b7857091bbaecb3cd4783a4d7ed19548cd63bf8f244e2b0ea7c10812c53

  • SHA512

    aa7de85f408873ddda3b27a7d716d7617cae31e5c18986815cc2bb496e7b716bbb9734c9dca4d1e1e7bf7539a7afac6e5f3af50b0174fb5dd4478e749a1fe581

  • SSDEEP

    1536:G70tx9F0kevGd9pnpuoNfXuJsAvsxpuqkkZEfXTjSBVYt3gt1V9XaAj2/L/uqlG:GQH9FhQU9JMLkxHkfvTWBVYd8V98LmT

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

t-vw8qw3d.duckdns.org:23458

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-OFN57D

  • 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

      980d0b7857091bbaecb3cd4783a4d7ed19548cd63bf8f244e2b0ea7c10812c53.vbs

    • Size

      86KB

    • MD5

      b395f7c166e901cbb3d4560021b62f1e

    • SHA1

      2ec42e99d3e040aa5dba198b6a258191a7abfd71

    • SHA256

      980d0b7857091bbaecb3cd4783a4d7ed19548cd63bf8f244e2b0ea7c10812c53

    • SHA512

      aa7de85f408873ddda3b27a7d716d7617cae31e5c18986815cc2bb496e7b716bbb9734c9dca4d1e1e7bf7539a7afac6e5f3af50b0174fb5dd4478e749a1fe581

    • SSDEEP

      1536:G70tx9F0kevGd9pnpuoNfXuJsAvsxpuqkkZEfXTjSBVYt3gt1V9XaAj2/L/uqlG:GQH9FhQU9JMLkxHkfvTWBVYd8V98LmT

    • 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

    • Legitimate hosting services abused for malware hosting/C2

    • Network Service Discovery

      Attempt to gather information on host's network.

    • Suspicious use of NtCreateThreadExHideFromDebugger

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks