General

  • Target

    VDF645425140·pdf.vbs

  • Size

    25KB

  • Sample

    240904-kd568sycjh

  • MD5

    f758726ca8e3639be7fb0ff04a7a8c4a

  • SHA1

    14d882ba6389b41a57f012c409080d7d1e872ac7

  • SHA256

    049feb6dcf68c869a98bf8fe7fe64434e8e27c18954a290094d636ac0bb2be23

  • SHA512

    23961d2ad2057c002c69cb78a801f0b044752acd8cbbe9905aca11ef9ccea1149a8c211c893d71917589ad9d5e1ba2853df59a97b3824cafbcdee1060947124e

  • SSDEEP

    384:iinVweRHN57gFx1JMhH1HxE2OUZrBclg0tMlDNtjwsLwi+eRrs+hNXusOKSqILB7:iiYgKXpDcqQo

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

a458386d9.duckdns.org:3256

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

    true

  • 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-U25QJ2

  • 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

      VDF645425140·pdf.vbs

    • Size

      25KB

    • MD5

      f758726ca8e3639be7fb0ff04a7a8c4a

    • SHA1

      14d882ba6389b41a57f012c409080d7d1e872ac7

    • SHA256

      049feb6dcf68c869a98bf8fe7fe64434e8e27c18954a290094d636ac0bb2be23

    • SHA512

      23961d2ad2057c002c69cb78a801f0b044752acd8cbbe9905aca11ef9ccea1149a8c211c893d71917589ad9d5e1ba2853df59a97b3824cafbcdee1060947124e

    • SSDEEP

      384:iinVweRHN57gFx1JMhH1HxE2OUZrBclg0tMlDNtjwsLwi+eRrs+hNXusOKSqILB7:iiYgKXpDcqQo

    • Guloader,Cloudeye

      A shellcode based downloader first seen in 2020.

    • Remcos

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

    • Credentials from Password Stores: Credentials from Web Browsers

      Malicious Access or copy of Web Browser Credential store.

    • 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

    • 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