General

  • Target

    Quotation request YN2024-10-07pdf.vbs

  • Size

    543KB

  • Sample

    241007-fsjvbs1fqb

  • MD5

    3d8cf5dfe51b68c3ad7e205faf69eee2

  • SHA1

    036713fc8f92ad3108fdd7851f7c0658c615f091

  • SHA256

    a8d4c91b369fdea22a07354ee6da98dca280e3978faf60943fbadf837ffdc53a

  • SHA512

    9f1f1d1a3e79ed09cab483c657cddaefb079ceb351a34eeee9b008dc892629e9ffaf0999db586d64f1637213ad21b208d6321985281905fe7151b1e769a7b6a3

  • SSDEEP

    1536:ZJJJJJJJJJJJJJJJJJ7ssssssssssssssssssssssssssssssssssssssssssss9:J

Malware Config

Extracted

Language
ps1
Source
URLs
exe.dropper

https://drive.google.com/uc?export=download&id=

Extracted

Credentials

  • Protocol:
    ftp
  • Host:
    ftp.desckvbrat.com.br
  • Port:
    21
  • Username:
    desckvbrat1
  • Password:
    developerpro21578Jp@@

Extracted

Family

remcos

Botnet

MANIFESTATIONS

C2

janbours92harbu03.duckdns.org:3980

janbours92harbu04.duckdns.org:3981

janbours92harbu007.duckdns.org:3981

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

    false

  • hide_keylog_file

    true

  • install_flag

    false

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-NACZDT

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Targets

    • Target

      Quotation request YN2024-10-07pdf.vbs

    • Size

      543KB

    • MD5

      3d8cf5dfe51b68c3ad7e205faf69eee2

    • SHA1

      036713fc8f92ad3108fdd7851f7c0658c615f091

    • SHA256

      a8d4c91b369fdea22a07354ee6da98dca280e3978faf60943fbadf837ffdc53a

    • SHA512

      9f1f1d1a3e79ed09cab483c657cddaefb079ceb351a34eeee9b008dc892629e9ffaf0999db586d64f1637213ad21b208d6321985281905fe7151b1e769a7b6a3

    • SSDEEP

      1536:ZJJJJJJJJJJJJJJJJJ7ssssssssssssssssssssssssssssssssssssssssssss9:J

    • Remcos

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

    • 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

      Using powershell.exe command.

    • Checks computer location settings

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

    • Drops startup file

    • Accesses Microsoft Outlook accounts

    • Adds Run key to start application

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

    • Indicator Removal: File Deletion

      Adversaries may delete files left behind by the actions of their intrusion activity.

    • Legitimate hosting services abused for malware hosting/C2

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks