Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231127-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231127-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08/12/2023, 09:22

General

  • Target

    SecuriteInfo.com.Win32.RATX-gen.23971.32281.exe

  • Size

    757KB

  • MD5

    6696d37cf0b9b65fd9fc58934d79c9cb

  • SHA1

    6c75525f455c341e936ec64546fc4d9bfe52ee81

  • SHA256

    2db991b9ae725ec59f9a29654e4c5f8d2bf363662cfa8d271a8692fea4883744

  • SHA512

    b9db5f1832b7a6d046c029204d6061e13b1e4b1d3e1a0117a7f51d03aa08b6a5f97be2036cba93ceb17a4f558c4ddfd580a80185d9c8446818b854ebe1749a18

  • SSDEEP

    12288:HDWMD9ehE+uDneLBQt20dup/20AQBOLdxD4N1fahKDZncwk6pvxT0K0jlyOJN9R4:FeVZ27zZPdnjImBOQXU

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

107.175.229.139:8087

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-IZFV1M

  • 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.

  • NirSoft MailPassView 2 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 2 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 6 IoCs
  • Drops startup file 2 IoCs
  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 27 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.RATX-gen.23971.32281.exe
    "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.RATX-gen.23971.32281.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1484
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe
      "Powershell.exe" -ExecutionPolicy Bypass -command Copy-Item 'C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.RATX-gen.23971.32281.exe' 'C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\.exe'
      2⤵
      • Drops startup file
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3760
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:872
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
        C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe /stext "C:\Users\Admin\AppData\Local\Temp\fvwtjzufs"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:1864
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
        C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe /stext "C:\Users\Admin\AppData\Local\Temp\hxkeksfggrqy"
        3⤵
        • Accesses Microsoft Outlook accounts
        PID:264
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
        C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe /stext "C:\Users\Admin\AppData\Local\Temp\rrpwlkqatzikfig"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1044

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\ProgramData\remcos\logs.dat

          Filesize

          144B

          MD5

          4332a0f609caccc46bd2ae81dd0916f7

          SHA1

          fa659debbf36207ab86f7a7598e3aeedb2ca3d83

          SHA256

          68d8e65d0f387ae8ec1ed1d290d8bf6b97876b61239e85e8122d6c2bcfd1894a

          SHA512

          fabda691bb44f4a15fe9118fcb2c34df883d12bdf5efb3afdb777d4ca5a1ac20e2c5eddce786aacd2e95ae7b20a3c968df2a0d13ce6c2a800f323a76a86b5a19

        • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_1ngejdtb.rjj.ps1

          Filesize

          60B

          MD5

          d17fe0a3f47be24a6453e9ef58c94641

          SHA1

          6ab83620379fc69f80c0242105ddffd7d98d5d9d

          SHA256

          96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

          SHA512

          5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

          Filesize

          4KB

          MD5

          b645998a8fdd6743c0a095bc36ef4b74

          SHA1

          1181e110c9cfb632824da8794afcc3ef8b8de1c7

          SHA256

          7f375fd0c1bf3b4a39e12d3290a97a8dffd1b1d73bbaf3a276fc5d2c2757cdfe

          SHA512

          0e21cd5bd73ab7bd0fbb34fc0b22a7c19e753003b347602466898b7983b38db49037decca1e805b1a5913dacf1f3f72b6b369987c782f15d797848c64f6e98d7

        • memory/264-62-0x0000000000400000-0x0000000000457000-memory.dmp

          Filesize

          348KB

        • memory/264-49-0x0000000000400000-0x0000000000457000-memory.dmp

          Filesize

          348KB

        • memory/264-53-0x0000000000400000-0x0000000000457000-memory.dmp

          Filesize

          348KB

        • memory/264-45-0x0000000000400000-0x0000000000457000-memory.dmp

          Filesize

          348KB

        • memory/872-68-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/872-73-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/872-115-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/872-114-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/872-107-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/872-106-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/872-99-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/872-98-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/872-91-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/872-90-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/872-86-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/872-26-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/872-28-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/872-29-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/872-75-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/872-31-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/872-33-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/872-35-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/872-74-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/872-36-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/872-72-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/872-38-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/872-39-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/872-40-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/872-41-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/872-42-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/872-43-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/872-61-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1044-55-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/1044-50-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/1044-64-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/1044-63-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/1484-1-0x0000000074CC0000-0x0000000075470000-memory.dmp

          Filesize

          7.7MB

        • memory/1484-6-0x0000000005850000-0x00000000058EC000-memory.dmp

          Filesize

          624KB

        • memory/1484-3-0x0000000005610000-0x00000000056BE000-memory.dmp

          Filesize

          696KB

        • memory/1484-4-0x0000000005D60000-0x0000000006304000-memory.dmp

          Filesize

          5.6MB

        • memory/1484-30-0x0000000074CC0000-0x0000000075470000-memory.dmp

          Filesize

          7.7MB

        • memory/1484-2-0x00000000057A0000-0x00000000057B0000-memory.dmp

          Filesize

          64KB

        • memory/1484-24-0x00000000032A0000-0x00000000032A8000-memory.dmp

          Filesize

          32KB

        • memory/1484-5-0x00000000057B0000-0x0000000005842000-memory.dmp

          Filesize

          584KB

        • memory/1484-0-0x0000000000B40000-0x0000000000C04000-memory.dmp

          Filesize

          784KB

        • memory/1864-44-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/1864-48-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/1864-66-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/1864-52-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/3760-25-0x0000000005EA0000-0x00000000061F4000-memory.dmp

          Filesize

          3.3MB

        • memory/3760-9-0x0000000004EE0000-0x0000000004EF0000-memory.dmp

          Filesize

          64KB

        • memory/3760-77-0x0000000006890000-0x00000000068AA000-memory.dmp

          Filesize

          104KB

        • memory/3760-78-0x0000000006910000-0x0000000006932000-memory.dmp

          Filesize

          136KB

        • memory/3760-82-0x0000000074CC0000-0x0000000075470000-memory.dmp

          Filesize

          7.7MB

        • memory/3760-37-0x0000000006400000-0x000000000644C000-memory.dmp

          Filesize

          304KB

        • memory/3760-34-0x00000000063B0000-0x00000000063CE000-memory.dmp

          Filesize

          120KB

        • memory/3760-76-0x00000000073B0000-0x0000000007446000-memory.dmp

          Filesize

          600KB

        • memory/3760-16-0x0000000005D30000-0x0000000005D96000-memory.dmp

          Filesize

          408KB

        • memory/3760-7-0x0000000004DD0000-0x0000000004E06000-memory.dmp

          Filesize

          216KB

        • memory/3760-13-0x0000000005CC0000-0x0000000005D26000-memory.dmp

          Filesize

          408KB

        • memory/3760-12-0x00000000054E0000-0x0000000005502000-memory.dmp

          Filesize

          136KB

        • memory/3760-8-0x0000000074CC0000-0x0000000075470000-memory.dmp

          Filesize

          7.7MB

        • memory/3760-11-0x0000000005520000-0x0000000005B48000-memory.dmp

          Filesize

          6.2MB

        • memory/3760-10-0x0000000004EE0000-0x0000000004EF0000-memory.dmp

          Filesize

          64KB