Analysis

  • max time kernel
    150s
  • max time network
    143s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04-12-2024 02:30

General

  • Target

    4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe

  • Size

    856KB

  • MD5

    b7b504ea022610fe69940fd54fd2bc27

  • SHA1

    8cb39de97c36eb8328436ffe21be24742925e652

  • SHA256

    4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87

  • SHA512

    4f38f6ff589cb607c2cbd5be4be78c5dffe9f03723ec9c9eee9c606b9a8143ade83dbd3c2639f2401ee47232b899fb9dbe9dde7fea5196c31483d2b552f4b313

  • SSDEEP

    24576:KdeRzboLmkwWQ6Q2l/4SPTIXkORnLeV35YryHC:CyO37l5TkzRLePYryHC

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

192.210.150.26:8787

Attributes
  • audio_folder

    MicRecords

  • audio_path

    ApplicationPath

  • 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-R1T905

  • 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.

  • Remcos family
  • Detected Nirsoft tools 3 IoCs

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

  • NirSoft MailPassView 1 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 1 IoCs

    Password recovery tool for various web browsers

  • Drops startup file 2 IoCs
  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 4 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Using powershell.exe command.

  • System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious behavior: MapViewOfSection 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 31 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe
    "C:\Users\Admin\AppData\Local\Temp\4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4316
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe
      "Powershell.exe" -ExecutionPolicy Bypass -command Copy-Item 'C:\Users\Admin\AppData\Local\Temp\4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe' 'C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\.exe'
      2⤵
      • Drops startup file
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:320
    • C:\Users\Admin\AppData\Local\Temp\4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe
      "C:\Users\Admin\AppData\Local\Temp\4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3972
      • C:\Users\Admin\AppData\Local\Temp\4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe
        C:\Users\Admin\AppData\Local\Temp\4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe /stext "C:\Users\Admin\AppData\Local\Temp\giprtgpr"
        3⤵
          PID:2336
        • C:\Users\Admin\AppData\Local\Temp\4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe
          C:\Users\Admin\AppData\Local\Temp\4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe /stext "C:\Users\Admin\AppData\Local\Temp\giprtgpr"
          3⤵
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:4152
        • C:\Users\Admin\AppData\Local\Temp\4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe
          C:\Users\Admin\AppData\Local\Temp\4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe /stext "C:\Users\Admin\AppData\Local\Temp\rccctyalyby"
          3⤵
          • Accesses Microsoft Outlook accounts
          • System Location Discovery: System Language Discovery
          PID:2216
        • C:\Users\Admin\AppData\Local\Temp\4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe
          C:\Users\Admin\AppData\Local\Temp\4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe /stext "C:\Users\Admin\AppData\Local\Temp\teivuilmmjqpfql"
          3⤵
            PID:2980
          • C:\Users\Admin\AppData\Local\Temp\4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe
            C:\Users\Admin\AppData\Local\Temp\4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe /stext "C:\Users\Admin\AppData\Local\Temp\teivuilmmjqpfql"
            3⤵
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:4160

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\ProgramData\remcos\logs.dat

        Filesize

        124B

        MD5

        3b9d80511f10764f287409c5d8468242

        SHA1

        29988564e2302470ea22e558ae837547c2d6cf1b

        SHA256

        c175db141a2041e7cd1600e655048e54f6cf743cec504c61bd078670b63786be

        SHA512

        9ff2fdca36458836a9cd6f26f7db70002e8dfdd278280c1260bd8fad187ef2d196de675e686d8202e39392a30f3d00d977c49ee24f23c699c75237e2d0ff223f

      • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_wjuclgd1.pva.ps1

        Filesize

        60B

        MD5

        d17fe0a3f47be24a6453e9ef58c94641

        SHA1

        6ab83620379fc69f80c0242105ddffd7d98d5d9d

        SHA256

        96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

        SHA512

        5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

        Filesize

        4KB

        MD5

        ac300aeaf27709e2067788fdd4624843

        SHA1

        e98edd4615d35de96e30f1a0e13c05b42ee7eb7b

        SHA256

        d2637d58bb120dc6fefe2f38d6e0d4b308006b8639106a7f9e915fa80b5cc9d9

        SHA512

        09c46e708f9d253dccd4d943639d9f8126f868ae3dcd951aad12222bb98b5d3814676f878c8391b9bdab5dedcf5b9e9eaeb2ad3ffec57bda875198735586d4df

      • memory/320-8-0x0000000074AA0000-0x0000000075250000-memory.dmp

        Filesize

        7.7MB

      • memory/320-11-0x0000000074AA0000-0x0000000075250000-memory.dmp

        Filesize

        7.7MB

      • memory/320-45-0x0000000006E40000-0x0000000006E5A000-memory.dmp

        Filesize

        104KB

      • memory/320-44-0x0000000007920000-0x00000000079B6000-memory.dmp

        Filesize

        600KB

      • memory/320-27-0x00000000069B0000-0x00000000069FC000-memory.dmp

        Filesize

        304KB

      • memory/320-26-0x0000000006970000-0x000000000698E000-memory.dmp

        Filesize

        120KB

      • memory/320-9-0x0000000003000000-0x0000000003036000-memory.dmp

        Filesize

        216KB

      • memory/320-46-0x0000000006E90000-0x0000000006EB2000-memory.dmp

        Filesize

        136KB

      • memory/320-10-0x0000000005BC0000-0x00000000061E8000-memory.dmp

        Filesize

        6.2MB

      • memory/320-13-0x0000000074AA0000-0x0000000075250000-memory.dmp

        Filesize

        7.7MB

      • memory/320-12-0x0000000005830000-0x0000000005852000-memory.dmp

        Filesize

        136KB

      • memory/320-14-0x00000000059D0000-0x0000000005A36000-memory.dmp

        Filesize

        408KB

      • memory/320-15-0x0000000005AC0000-0x0000000005B26000-memory.dmp

        Filesize

        408KB

      • memory/320-50-0x0000000074AA0000-0x0000000075250000-memory.dmp

        Filesize

        7.7MB

      • memory/320-25-0x00000000064D0000-0x0000000006824000-memory.dmp

        Filesize

        3.3MB

      • memory/2216-53-0x0000000000400000-0x0000000000462000-memory.dmp

        Filesize

        392KB

      • memory/2216-52-0x0000000000400000-0x0000000000462000-memory.dmp

        Filesize

        392KB

      • memory/2216-59-0x0000000000400000-0x0000000000462000-memory.dmp

        Filesize

        392KB

      • memory/3972-75-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/3972-30-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/3972-109-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/3972-32-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/3972-108-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/3972-101-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/3972-39-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/3972-100-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/3972-40-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/3972-41-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/3972-43-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/3972-93-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/3972-92-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/3972-84-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/3972-77-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/3972-76-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/3972-31-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/3972-37-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/3972-68-0x0000000010000000-0x0000000010019000-memory.dmp

        Filesize

        100KB

      • memory/3972-29-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/3972-69-0x0000000010000000-0x0000000010019000-memory.dmp

        Filesize

        100KB

      • memory/3972-38-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/3972-35-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/3972-70-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/3972-65-0x0000000010000000-0x0000000010019000-memory.dmp

        Filesize

        100KB

      • memory/4152-54-0x0000000000400000-0x0000000000478000-memory.dmp

        Filesize

        480KB

      • memory/4152-51-0x0000000000400000-0x0000000000478000-memory.dmp

        Filesize

        480KB

      • memory/4152-58-0x0000000000400000-0x0000000000478000-memory.dmp

        Filesize

        480KB

      • memory/4160-57-0x0000000000400000-0x0000000000424000-memory.dmp

        Filesize

        144KB

      • memory/4160-55-0x0000000000400000-0x0000000000424000-memory.dmp

        Filesize

        144KB

      • memory/4160-56-0x0000000000400000-0x0000000000424000-memory.dmp

        Filesize

        144KB

      • memory/4316-0-0x0000000074AAE000-0x0000000074AAF000-memory.dmp

        Filesize

        4KB

      • memory/4316-73-0x0000000074AA0000-0x0000000075250000-memory.dmp

        Filesize

        7.7MB

      • memory/4316-2-0x00000000052F0000-0x0000000005894000-memory.dmp

        Filesize

        5.6MB

      • memory/4316-5-0x0000000074AA0000-0x0000000075250000-memory.dmp

        Filesize

        7.7MB

      • memory/4316-4-0x0000000004D90000-0x0000000004D9A000-memory.dmp

        Filesize

        40KB

      • memory/4316-72-0x0000000074AAE000-0x0000000074AAF000-memory.dmp

        Filesize

        4KB

      • memory/4316-6-0x0000000005040000-0x00000000050EE000-memory.dmp

        Filesize

        696KB

      • memory/4316-1-0x00000000002A0000-0x000000000037C000-memory.dmp

        Filesize

        880KB

      • memory/4316-7-0x0000000005190000-0x000000000522C000-memory.dmp

        Filesize

        624KB

      • memory/4316-28-0x0000000004FE0000-0x0000000004FE8000-memory.dmp

        Filesize

        32KB

      • memory/4316-3-0x0000000004DE0000-0x0000000004E72000-memory.dmp

        Filesize

        584KB