General

  • Target

    SKMBT_77122024816310TD01_20220128_17311 .vbs

  • Size

    681KB

  • Sample

    240917-rb5agswfrh

  • MD5

    63f4f98d6d8d123b77a55dc189e5990b

  • SHA1

    5f3245ec3534dda85a10f2fd21a2bf4b64ed5eaa

  • SHA256

    f5afa028952cc301041f1c0911e1ef24e4bd5100f733252e045640e7b6d5c156

  • SHA512

    c1bb776d2b4cd8b176025d3911c2981d0794a056d2cb64e6a8a8df4a913bfb87dfe0585db4b74fac897e8fabbe30164c2ad5d1eae84f291ac703a8bfe16bfc79

  • SSDEEP

    1536:9SSSSSSSSSSSSSSSSSSSSSSSx22222222222222222222222222222222222222I:7LeP6H07x/e

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

RemoteHost

C2

212.162.149.163:2404

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

    false

  • install_flag

    false

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    1210

  • mouse_option

    false

  • mutex

    Rmc-9HC4UH

  • 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

      SKMBT_77122024816310TD01_20220128_17311 .vbs

    • Size

      681KB

    • MD5

      63f4f98d6d8d123b77a55dc189e5990b

    • SHA1

      5f3245ec3534dda85a10f2fd21a2bf4b64ed5eaa

    • SHA256

      f5afa028952cc301041f1c0911e1ef24e4bd5100f733252e045640e7b6d5c156

    • SHA512

      c1bb776d2b4cd8b176025d3911c2981d0794a056d2cb64e6a8a8df4a913bfb87dfe0585db4b74fac897e8fabbe30164c2ad5d1eae84f291ac703a8bfe16bfc79

    • SSDEEP

      1536:9SSSSSSSSSSSSSSSSSSSSSSSx22222222222222222222222222222222222222I:7LeP6H07x/e

    • Remcos

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

    • Blocklisted process makes network request

    • Checks computer location settings

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

    • Drops startup file

    • 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