Overview

overview

10

Static

static

3

51c0bcbc40...2c.exe

windows7-x64

10

51c0bcbc40...2c.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    4a9440baa61be8363a372b0bbc5933ad.bin

  • Size

    911KB

  • Sample

    250106-bkyaja1may

  • MD5

    5b053058a37d906faf231fefb46c2024

  • SHA1

    ca0580811287ea1c9752c3e8277afd2cc9b4539c

  • SHA256

    184308ed956dd869a6eb03abf2250c59ae4fa063a1633368abbb270cdc6a3138

  • SHA512

    590bc602110969b01b4bca142d4491f1827d0f223e09e47bf2e1c5d69022372a2397678bf45ad344f4ed3f87a97c37d934aba91738cd49d657cbd683ffe7bae5

  • SSDEEP

    24576:7W3EdmGfZgTalFWgkeYruTqRTSyBXAk5ESQqKZd3DncNz:7qEUMBWZeYymRFHCqKyz

Score
10/10
remcosgraiasdiscoveryexecutionpersistencerat

Malware Config

Extracted

Family

remcos

Botnet

Graias

C2

185.234.72.215:4444

Attributes
  • audio_folder

    MicRecords

  • audio_path

    ApplicationPath

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    graias.exe

  • copy_folder

    Graias

  • delete_file

    false

  • hide_file

    true

  • hide_keylog_file

    true

  • install_flag

    true

  • install_path

    %AppData%

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    graias

  • mouse_option

    false

  • mutex

    Rmc-O844B9

  • 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

      51c0bcbc40451c10e3b56df10853156378e8dbfb32ee63ea936737d42818822c.exe

    • Size

      962KB

    • MD5

      4a9440baa61be8363a372b0bbc5933ad

    • SHA1

      9aa5380dc87829c6fa22e9029cadcab9f6221ef9

    • SHA256

      51c0bcbc40451c10e3b56df10853156378e8dbfb32ee63ea936737d42818822c

    • SHA512

      648bd4434ce14e15c3faba25945525fffec6dad028e8fe26982d70096ccd448ca6e114e10739b1e990ea65970db97897713b8054450f1cd98c9aacb596436b0c

    • SSDEEP

      24576:fdFeteG2H+FLBvmhCWWmLiUZklZGIo/KCrB:FA9w+bvmhCWWpUZkbDo5rB

    Score
    10/10
    remcosgraiasdiscoveryexecutionpersistencerat

    • Remcos

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

      ratremcos

    • Remcos family

      remcos

    • Command and Scripting Interpreter: PowerShell

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

      execution

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Tasks