Overview

overview

10

Static

static

1

SecuriteIn...65.exe

windows7-x64

10

SecuriteIn...65.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    166s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/11/2022, 04:32

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General

  • Target
    SecuriteInfo.com.Win32.Evo-gen.5765.4565.exe
  • Size 481KB
  • Sample221122-e5ynksdf3v
  • SHA256 45cd8dd797af4fd769eef00243134c46c38bd9e65e15d7bd2e9b834d5e8b3095
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
remcosremotehostpersistencerat

Malware Config

Extracted

Family

  • remcos

Botnet

  • RemoteHost

C2

  • drremcoz1.ddns.net:1307

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

    remcos

  • mouse_option

    false

  • mutex

    Rmc-FADJRF

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    Remcos

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

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

    ratremcos
  • Executes dropped EXE 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.Evo-gen.5765.4565.exe
    "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.Evo-gen.5765.4565.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4368
    • C:\Users\Admin\AppData\Local\Temp\wrhpkzrfsy.exe
      "C:\Users\Admin\AppData\Local\Temp\wrhpkzrfsy.exe" C:\Users\Admin\AppData\Local\Temp\iqdsikunk.c
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious use of SetThreadContext
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of WriteProcessMemory
      PID:4188
      • C:\Users\Admin\AppData\Local\Temp\wrhpkzrfsy.exe
        "C:\Users\Admin\AppData\Local\Temp\wrhpkzrfsy.exe" C:\Users\Admin\AppData\Local\Temp\iqdsikunk.c
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetWindowsHookEx
        PID:4776

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        iqdsikunk.c
        • Path C:\Users\Admin\AppData\Local\Temp\iqdsikunk.c
        • Size 7KB
        • SHA256 b9c5a2ba53c7357e5fb1c817ac6048693b8a7bcb16300864ea12a0a960e9be14
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        uwjfb.opb
        • Path C:\Users\Admin\AppData\Local\Temp\uwjfb.opb
        • Size 469KB
        • SHA256 5cf00b22782985be9b9663a7452bfafa4a8ab453cf34a4b4ad6d96c2cdbcd62c
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        wrhpkzrfsy.exe
        • Path C:\Users\Admin\AppData\Local\Temp\wrhpkzrfsy.exe
        • Size 7KB
        • SHA256 60b56f3f784d21da3a18156269e2eda3b84ae715e86724056cf34e986bc62be6
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        wrhpkzrfsy.exe
        • Path C:\Users\Admin\AppData\Local\Temp\wrhpkzrfsy.exe
        • Size 7KB
        • SHA256 60b56f3f784d21da3a18156269e2eda3b84ae715e86724056cf34e986bc62be6
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        wrhpkzrfsy.exe
        • Path C:\Users\Admin\AppData\Local\Temp\wrhpkzrfsy.exe
        • Size 7KB
        • SHA256 60b56f3f784d21da3a18156269e2eda3b84ae715e86724056cf34e986bc62be6
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        memory/4776-139-0x0000000000400000-0x000000000047F000-memory.dmp
        Download

        memory/4776-140-0x0000000000400000-0x000000000047F000-memory.dmp
        Download