Analysis

  • max time kernel
    148s
  • max time network
    134s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22-07-2024 14:00

General

  • Target

    MalwareBazaar.exe

  • Size

    2.3MB

  • MD5

    2a65843b474feff5256bd673b4ff88ae

  • SHA1

    0c80fb17f84d478941ab4d51fddcccaf274da31d

  • SHA256

    d07cfaeced4e8bba1c9fdc8006dc80105cf654759c4d74d4d2d2964a0f6e9230

  • SHA512

    7f8a5a684273a031b648129870d493c9a2d63838a8179b8ce32e2c94f956c1a1196ef404d346e6ca42016489fa949b985bc598111dde0249c64c12a668b77292

  • SSDEEP

    49152:E2u/BMdg532rpsjCMqigjns2+a95PlpiH9MzMrcgt4hzNriBldyQJ/MqmG:DrpEZI0BnlJNh

Malware Config

Extracted

Family

remcos

Botnet

Dollar Man

C2

178.23.190.118:52499

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-SJ9MVF

  • 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.

  • Detected Nirsoft tools 8 IoCs

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

  • NirSoft MailPassView 2 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 3 IoCs

    Password recovery tool for various web browsers

  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious behavior: MapViewOfSection 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe
    "C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4464
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3116
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe
        C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe /stext "C:\Users\Admin\AppData\Local\Temp\pdqwp"
        3⤵
          PID:2308
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe
          C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe /stext "C:\Users\Admin\AppData\Local\Temp\pdqwp"
          3⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:4124
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe
          C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe /stext "C:\Users\Admin\AppData\Local\Temp\sfvoijji"
          3⤵
            PID:1256
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe
            C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe /stext "C:\Users\Admin\AppData\Local\Temp\sfvoijji"
            3⤵
            • Accesses Microsoft Outlook accounts
            PID:4512
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe
            C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe /stext "C:\Users\Admin\AppData\Local\Temp\czbhibubvapb"
            3⤵
              PID:5076
            • C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe
              C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe /stext "C:\Users\Admin\AppData\Local\Temp\czbhibubvapb"
              3⤵
                PID:2368
              • C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe
                C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe /stext "C:\Users\Admin\AppData\Local\Temp\czbhibubvapb"
                3⤵
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                PID:4424

          Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\ProgramData\remcos\logs.dat

            Filesize

            144B

            MD5

            16ef359bccd3fa0e3163c5075e1394cf

            SHA1

            aef3f4948446712ea1c157b5273aa5643a7e2810

            SHA256

            e83dd25175762f338a235a50bc155895597b4d1741fb0f275f2b60759918e645

            SHA512

            e6ef5d41b5e9e1855176c0ac34032376e78858d720635a6b4f15535cc5a79be4c1fe83519a58cac93cb4e407bdc8ef2bfde4dbb0ec16bb1497f9b4195f2e5bc4

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

            Filesize

            4KB

            MD5

            71e3611290752b1a114e303d84e3987f

            SHA1

            210794023f369235615743c802fce5055961ee6e

            SHA256

            5163d0e849d5d39f1e8beb9d13beea8240d532dff6f28433522148628007af06

            SHA512

            d0235dd58f9038009e44c4847535f2bb652f093418fdfd890c01b4b9d8981df3a31e4a89f9099c226becbfe8541015d60f6b852165241d08cb8795d93dd2eb09

          • memory/3116-44-0x0000000010000000-0x0000000010019000-memory.dmp

            Filesize

            100KB

          • memory/3116-11-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/3116-3-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/3116-77-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/3116-8-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/3116-78-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/3116-9-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/3116-70-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/3116-12-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/3116-14-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/3116-16-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/3116-17-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/3116-69-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/3116-62-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/3116-61-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/3116-53-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/3116-54-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/3116-1-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/3116-49-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/3116-45-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/3116-7-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/3116-4-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/3116-10-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/3116-43-0x0000000010000000-0x0000000010019000-memory.dmp

            Filesize

            100KB

          • memory/3116-0-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/3116-40-0x0000000010000000-0x0000000010019000-memory.dmp

            Filesize

            100KB

          • memory/3116-2-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/4124-38-0x0000000000400000-0x0000000000478000-memory.dmp

            Filesize

            480KB

          • memory/4124-29-0x0000000000400000-0x0000000000478000-memory.dmp

            Filesize

            480KB

          • memory/4124-18-0x0000000000400000-0x0000000000478000-memory.dmp

            Filesize

            480KB

          • memory/4124-22-0x0000000000400000-0x0000000000478000-memory.dmp

            Filesize

            480KB

          • memory/4124-31-0x0000000000400000-0x0000000000478000-memory.dmp

            Filesize

            480KB

          • memory/4424-33-0x0000000000400000-0x0000000000424000-memory.dmp

            Filesize

            144KB

          • memory/4424-32-0x0000000000400000-0x0000000000424000-memory.dmp

            Filesize

            144KB

          • memory/4424-24-0x0000000000400000-0x0000000000424000-memory.dmp

            Filesize

            144KB

          • memory/4424-27-0x0000000000400000-0x0000000000424000-memory.dmp

            Filesize

            144KB

          • memory/4424-28-0x0000000000400000-0x0000000000424000-memory.dmp

            Filesize

            144KB

          • memory/4512-23-0x0000000000400000-0x0000000000462000-memory.dmp

            Filesize

            392KB

          • memory/4512-26-0x0000000000400000-0x0000000000462000-memory.dmp

            Filesize

            392KB

          • memory/4512-20-0x0000000000400000-0x0000000000462000-memory.dmp

            Filesize

            392KB

          • memory/4512-30-0x0000000000400000-0x0000000000462000-memory.dmp

            Filesize

            392KB