Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10-09-2024 08:29

General

  • Target

    New PO-004090924SEPT.exe

  • Size

    45KB

  • MD5

    c020ee2eefaa959a9873aba04be3b51d

  • SHA1

    328fe6ecec7b5ec5edfbed733fb5eb7da149abbb

  • SHA256

    d6143cfa5a3ac9c371cb290c69dbb04c7b3fd3d136582858641355c923b6e8df

  • SHA512

    37f60d3f0183c2a70d0ce6ec1061fdff48f220c4fafd1ae7349a55b1cbf45c73b05b6a5aaccda791af9072051ee2a857015e67475994c363fca2155a537a2b69

  • SSDEEP

    768:usmySfU8WFNac0S1Izw3udLZzGjszlMeOH2TTBnECKFLI6GEBqIq/pg:uLyrdFgcez2uLMszlMeQ2PZUFLI6G8qe

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

camzeroconnect.duckdns.org:14645

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-GT4655

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

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

  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • Detected Nirsoft tools 8 IoCs

    Free utilities often used by attackers which can steal passwords, product keys, etc.

  • NirSoft MailPassView 3 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 3 IoCs

    Password recovery tool for various web browsers

  • Downloads MZ/PE file
  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 4 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious behavior: MapViewOfSection 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\New PO-004090924SEPT.exe
    "C:\Users\Admin\AppData\Local\Temp\New PO-004090924SEPT.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2420
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of WriteProcessMemory
      PID:220
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
        C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe /stext "C:\Users\Admin\AppData\Local\Temp\cxbfjmqxdltqpbbsoobceroyn"
        3⤵
          PID:2288
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
          C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe /stext "C:\Users\Admin\AppData\Local\Temp\cxbfjmqxdltqpbbsoobceroyn"
          3⤵
            PID:4284
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
            C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe /stext "C:\Users\Admin\AppData\Local\Temp\cxbfjmqxdltqpbbsoobceroyn"
            3⤵
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            PID:4952
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
            C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe /stext "C:\Users\Admin\AppData\Local\Temp\nzgxkfbyztluahpwyzovpebpwehm"
            3⤵
            • Accesses Microsoft Outlook accounts
            • System Location Discovery: System Language Discovery
            PID:3944
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
            C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe /stext "C:\Users\Admin\AppData\Local\Temp\pttilxlsnbdzcndipjbxajwyxlynnfk"
            3⤵
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:4724

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Temp\cxbfjmqxdltqpbbsoobceroyn

        Filesize

        4KB

        MD5

        c0ab2847671ed5375328c5127a02cc72

        SHA1

        dc2bcb51562fb17e5c8787833bc0181d88a5b75e

        SHA256

        e961f466a0638bc99182d0056245e2d8bf1ccc13a189b802aada981f379e2384

        SHA512

        0b8b634d21ac71e02cef86687bf84b6fcecfd24dafab8130f42ce8b4b3f308a2e1b1fa7bf8d37f2eda76efae2b30b8d39f41d808d771562d8545ed144241924f

      • memory/220-24-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/220-55-0x0000000010000000-0x0000000010019000-memory.dmp

        Filesize

        100KB

      • memory/220-57-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/220-26-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/220-5-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/220-8-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/220-7-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/220-10-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/220-9-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/220-27-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/220-12-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/220-13-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/220-15-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/220-16-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/220-14-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/220-18-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/220-19-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/220-25-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/220-21-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/220-22-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/220-23-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/220-56-0x0000000010000000-0x0000000010019000-memory.dmp

        Filesize

        100KB

      • memory/220-52-0x0000000010000000-0x0000000010019000-memory.dmp

        Filesize

        100KB

      • memory/220-29-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/220-20-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2420-1-0x0000000000FB0000-0x0000000000FC0000-memory.dmp

        Filesize

        64KB

      • memory/2420-3-0x0000000001A70000-0x0000000001A78000-memory.dmp

        Filesize

        32KB

      • memory/2420-11-0x0000000074E60000-0x0000000075610000-memory.dmp

        Filesize

        7.7MB

      • memory/2420-0-0x0000000074E6E000-0x0000000074E6F000-memory.dmp

        Filesize

        4KB

      • memory/2420-4-0x0000000005990000-0x000000000599A000-memory.dmp

        Filesize

        40KB

      • memory/2420-2-0x0000000074E60000-0x0000000075610000-memory.dmp

        Filesize

        7.7MB

      • memory/3944-48-0x0000000000400000-0x0000000000462000-memory.dmp

        Filesize

        392KB

      • memory/3944-31-0x0000000000400000-0x0000000000462000-memory.dmp

        Filesize

        392KB

      • memory/3944-38-0x0000000000400000-0x0000000000462000-memory.dmp

        Filesize

        392KB

      • memory/3944-36-0x0000000000400000-0x0000000000462000-memory.dmp

        Filesize

        392KB

      • memory/3944-43-0x0000000000400000-0x0000000000462000-memory.dmp

        Filesize

        392KB

      • memory/4724-44-0x0000000000400000-0x0000000000424000-memory.dmp

        Filesize

        144KB

      • memory/4724-41-0x0000000000400000-0x0000000000424000-memory.dmp

        Filesize

        144KB

      • memory/4724-40-0x0000000000400000-0x0000000000424000-memory.dmp

        Filesize

        144KB

      • memory/4724-34-0x0000000000400000-0x0000000000424000-memory.dmp

        Filesize

        144KB

      • memory/4952-33-0x0000000000400000-0x0000000000478000-memory.dmp

        Filesize

        480KB

      • memory/4952-50-0x0000000000400000-0x0000000000478000-memory.dmp

        Filesize

        480KB

      • memory/4952-42-0x0000000000400000-0x0000000000478000-memory.dmp

        Filesize

        480KB

      • memory/4952-30-0x0000000000400000-0x0000000000478000-memory.dmp

        Filesize

        480KB

      • memory/4952-39-0x0000000000400000-0x0000000000478000-memory.dmp

        Filesize

        480KB