Overview

overview

10

Static

static

1

SecuriteIn...61.exe

windows7-x64

10

SecuriteIn...61.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    134s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    16/11/2022, 05:41

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General

  • Target
    SecuriteInfo.com.Gen.Variant.Nemesis.1798.14766.31861.exe
  • Size 484KB
  • Sample221116-gdeshahd29
  • SHA256 779fe92ccc2fcb737c36756838a50a12d290c3e55cf7a18082abca41cd95c9b4
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
remcosucpersistencerat

Malware Config

Extracted

Family

  • remcos

Botnet

  • UC

C2

  • ucremcz1.ddns.net:1823

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    BIN.exe

  • copy_folder

    BIN

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    false

  • install_path

    %AppData%

  • keylog_crypt

    true

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    Rmc-X402GF

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    bin

  • 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.Gen.Variant.Nemesis.1798.14766.31861.exe
    "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Gen.Variant.Nemesis.1798.14766.31861.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1992
    • C:\Users\Admin\AppData\Local\Temp\skenfy.exe
      "C:\Users\Admin\AppData\Local\Temp\skenfy.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious use of SetThreadContext
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of WriteProcessMemory
      PID:1764
      • C:\Users\Admin\AppData\Local\Temp\skenfy.exe
        "C:\Users\Admin\AppData\Local\Temp\skenfy.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetWindowsHookEx
        PID:4704

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        auwsdkinudq.nq
        • Path C:\Users\Admin\AppData\Local\Temp\auwsdkinudq.nq
        • Size 7KB
        • SHA256 f6bb324cb5c78478fd7ef76e90326f5907dce388301f10daded219155bdd4a29
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        skenfy.exe
        • Path C:\Users\Admin\AppData\Local\Temp\skenfy.exe
        • Size 9KB
        • SHA256 961510fa6326ddfa21dcc166662e44cef8abc79c8b45775538a4979eabcb3d41
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        skenfy.exe
        • Path C:\Users\Admin\AppData\Local\Temp\skenfy.exe
        • Size 9KB
        • SHA256 961510fa6326ddfa21dcc166662e44cef8abc79c8b45775538a4979eabcb3d41
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        skenfy.exe
        • Path C:\Users\Admin\AppData\Local\Temp\skenfy.exe
        • Size 9KB
        • SHA256 961510fa6326ddfa21dcc166662e44cef8abc79c8b45775538a4979eabcb3d41
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        wyswzq.z
        • Path C:\Users\Admin\AppData\Local\Temp\wyswzq.z
        • Size 469KB
        • SHA256 4a95f6fcfebe28f347d4fced4b99981c6d2db1de46e8c77c497bc50d2e4c33f3
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        memory/4704-139-0x0000000000400000-0x000000000047F000-memory.dmp
        Download

        memory/4704-140-0x0000000000400000-0x000000000047F000-memory.dmp
        Download