General

  • Target

    Urgent Purchase Order (P.O.) No.477764107102024.vbs

  • Size

    543KB

  • Sample

    241007-fs4vha1frh

  • MD5

    50e853b9137996e5f5f8bd0d593381db

  • SHA1

    3543224a2d2eb10dac5d84695b04c9a708003bf9

  • SHA256

    1c511019abd39d416b101bf8a29895eadce4ad5371f31558437ccc1567e5d415

  • SHA512

    75a3d44d27ae2047c50665c874f8ab56198de93b17829653853fe38593eb8bdc6d7d4316f051f00a29acd7f019e157b54630fec9826d94d2d887dc9f0d0e555c

  • SSDEEP

    1536:fJJJJJJJJJJJJJJJJJLMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMv:F

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

      Urgent Purchase Order (P.O.) No.477764107102024.vbs

    • Size

      543KB

    • MD5

      50e853b9137996e5f5f8bd0d593381db

    • SHA1

      3543224a2d2eb10dac5d84695b04c9a708003bf9

    • SHA256

      1c511019abd39d416b101bf8a29895eadce4ad5371f31558437ccc1567e5d415

    • SHA512

      75a3d44d27ae2047c50665c874f8ab56198de93b17829653853fe38593eb8bdc6d7d4316f051f00a29acd7f019e157b54630fec9826d94d2d887dc9f0d0e555c

    • SSDEEP

      1536:fJJJJJJJJJJJJJJJJJLMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMv:F

    • 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

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • 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