Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    19/10/2024, 09:03

General

  • Target

    15.exe

  • Size

    469KB

  • MD5

    b22ad7c19d9be804fa14370318c42ebb

  • SHA1

    70eb106c8df97eb8fb5fd6e7532c849624151ca3

  • SHA256

    7517b5d6b373982ef7e97b3480a7b6467c79c628f096a257732eb2a5ca2f0878

  • SHA512

    9c0467d165ed5d6db83ca6a9bbc02478ba68a20bdf4a41e021f4df7efcf334f8dc586ed8099997b5ce55a1466e155d9bececf225aa5d5093d7aae236ec6a901b

  • SSDEEP

    12288:Wmnk7iLJbpIpiRL6I2WhSKQ9ZsfZQSVn9:uiLJbpI7I2WhQqZ7V9

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

core-hook.gl.at.ply.gg:7242

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    scvhost.exe

  • copy_folder

    files

  • delete_file

    true

  • hide_file

    true

  • hide_keylog_file

    false

  • install_flag

    true

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-UT6TD2

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    scvhost

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

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

  • UAC bypass 3 TTPs 3 IoCs
  • 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

  • Adds policy Run key to start application 2 TTPs 6 IoCs
  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 6 IoCs
  • Suspicious use of SetThreadContext 5 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 14 IoCs

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

  • Modifies registry key 1 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious behavior: MapViewOfSection 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\15.exe
    "C:\Users\Admin\AppData\Local\Temp\15.exe"
    1⤵
    • Adds policy Run key to start application
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2676
    • C:\Windows\SysWOW64\cmd.exe
      /k %windir%\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2696
      • C:\Windows\SysWOW64\reg.exe
        C:\Windows\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
        3⤵
        • UAC bypass
        • System Location Discovery: System Language Discovery
        • Modifies registry key
        PID:2812
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
      2⤵
      • Deletes itself
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2704
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c "C:\ProgramData\files\scvhost.exe"
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2592
        • C:\ProgramData\files\scvhost.exe
          C:\ProgramData\files\scvhost.exe
          4⤵
          • Adds policy Run key to start application
          • Executes dropped EXE
          • Adds Run key to start application
          • Suspicious use of SetThreadContext
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of WriteProcessMemory
          PID:2616
          • C:\Windows\SysWOW64\cmd.exe
            /k %windir%\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
            5⤵
            • System Location Discovery: System Language Discovery
            • Suspicious use of WriteProcessMemory
            PID:2740
            • C:\Windows\SysWOW64\reg.exe
              C:\Windows\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
              6⤵
              • UAC bypass
              • System Location Discovery: System Language Discovery
              • Modifies registry key
              PID:1716
          • \??\c:\program files (x86)\internet explorer\iexplore.exe
            "c:\program files (x86)\internet explorer\iexplore.exe"
            5⤵
            • Adds policy Run key to start application
            • Adds Run key to start application
            • Suspicious use of SetThreadContext
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: MapViewOfSection
            • Suspicious use of WriteProcessMemory
            PID:2572
            • C:\Windows\SysWOW64\cmd.exe
              /k %windir%\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
              6⤵
              • System Location Discovery: System Language Discovery
              • Suspicious use of WriteProcessMemory
              PID:2644
              • C:\Windows\SysWOW64\reg.exe
                C:\Windows\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
                7⤵
                • UAC bypass
                • System Location Discovery: System Language Discovery
                • Modifies registry key
                PID:1840
            • C:\Windows\SysWOW64\svchost.exe
              svchost.exe
              6⤵
                PID:1696
              • \??\c:\program files (x86)\internet explorer\iexplore.exe
                "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\jwlxltbtlvahtbsospmftymwt"
                6⤵
                • System Location Discovery: System Language Discovery
                • Suspicious behavior: EnumeratesProcesses
                PID:2220
              • \??\c:\program files (x86)\internet explorer\iexplore.exe
                "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\tyzpmlmvhdsuvhgsbszgekhfcafm"
                6⤵
                  PID:2112
                • \??\c:\program files (x86)\internet explorer\iexplore.exe
                  "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\tyzpmlmvhdsuvhgsbszgekhfcafm"
                  6⤵
                    PID:2664
                  • \??\c:\program files (x86)\internet explorer\iexplore.exe
                    "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\tyzpmlmvhdsuvhgsbszgekhfcafm"
                    6⤵
                      PID:1368
                    • \??\c:\program files (x86)\internet explorer\iexplore.exe
                      "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\tyzpmlmvhdsuvhgsbszgekhfcafm"
                      6⤵
                      • Accesses Microsoft Outlook accounts
                      • System Location Discovery: System Language Discovery
                      PID:468
                    • \??\c:\program files (x86)\internet explorer\iexplore.exe
                      "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\wseanexovlkyfvdwsclahxbwdoxvlwx"
                      6⤵
                      • System Location Discovery: System Language Discovery
                      • Suspicious use of AdjustPrivilegeToken
                      PID:2840

          Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Temp\install.vbs

            Filesize

            502B

            MD5

            36eda1a0df3669c86bfe96d150f1562e

            SHA1

            4acb5259ab18dcf61407aab9f626038cf9ff3260

            SHA256

            56419009641e66b0c8b6a1aec38a207d4e1c42a6a96ae6f9bd2def3472bc1138

            SHA512

            4c151e3945457810db1737d49347fa96d1f7c068b3e2ef21211405cfb3db5a7bca90ed793a4f380c48c296097d931cb5b7484c99da78875c12af02ed0b445998

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

            Filesize

            2B

            MD5

            f3b25701fe362ec84616a93a45ce9998

            SHA1

            d62636d8caec13f04e28442a0a6fa1afeb024bbb

            SHA256

            b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

            SHA512

            98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

          • \ProgramData\files\scvhost.exe

            Filesize

            469KB

            MD5

            b22ad7c19d9be804fa14370318c42ebb

            SHA1

            70eb106c8df97eb8fb5fd6e7532c849624151ca3

            SHA256

            7517b5d6b373982ef7e97b3480a7b6467c79c628f096a257732eb2a5ca2f0878

            SHA512

            9c0467d165ed5d6db83ca6a9bbc02478ba68a20bdf4a41e021f4df7efcf334f8dc586ed8099997b5ce55a1466e155d9bececf225aa5d5093d7aae236ec6a901b

          • memory/468-36-0x0000000000400000-0x0000000000457000-memory.dmp

            Filesize

            348KB

          • memory/468-37-0x0000000000400000-0x0000000000457000-memory.dmp

            Filesize

            348KB

          • memory/468-30-0x0000000000400000-0x0000000000457000-memory.dmp

            Filesize

            348KB

          • memory/1696-17-0x0000000000080000-0x00000000000FF000-memory.dmp

            Filesize

            508KB

          • memory/1696-18-0x0000000000080000-0x00000000000FF000-memory.dmp

            Filesize

            508KB

          • memory/1696-16-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

            Filesize

            4KB

          • memory/2220-28-0x0000000000400000-0x0000000000478000-memory.dmp

            Filesize

            480KB

          • memory/2220-27-0x0000000000400000-0x0000000000478000-memory.dmp

            Filesize

            480KB

          • memory/2220-35-0x0000000000400000-0x0000000000478000-memory.dmp

            Filesize

            480KB

          • memory/2572-20-0x0000000000170000-0x00000000001EF000-memory.dmp

            Filesize

            508KB

          • memory/2572-14-0x0000000000170000-0x00000000001EF000-memory.dmp

            Filesize

            508KB

          • memory/2572-25-0x0000000000170000-0x00000000001EF000-memory.dmp

            Filesize

            508KB

          • memory/2572-50-0x0000000000170000-0x00000000001EF000-memory.dmp

            Filesize

            508KB

          • memory/2572-11-0x0000000000170000-0x00000000001EF000-memory.dmp

            Filesize

            508KB

          • memory/2572-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

            Filesize

            4KB

          • memory/2572-23-0x0000000000170000-0x00000000001EF000-memory.dmp

            Filesize

            508KB

          • memory/2572-51-0x0000000000170000-0x00000000001EF000-memory.dmp

            Filesize

            508KB

          • memory/2572-21-0x0000000000170000-0x00000000001EF000-memory.dmp

            Filesize

            508KB

          • memory/2572-19-0x0000000000170000-0x00000000001EF000-memory.dmp

            Filesize

            508KB

          • memory/2572-49-0x0000000000170000-0x00000000001EF000-memory.dmp

            Filesize

            508KB

          • memory/2572-22-0x0000000000170000-0x00000000001EF000-memory.dmp

            Filesize

            508KB

          • memory/2572-12-0x0000000000170000-0x00000000001EF000-memory.dmp

            Filesize

            508KB

          • memory/2572-43-0x0000000000170000-0x00000000001EF000-memory.dmp

            Filesize

            508KB

          • memory/2572-44-0x0000000000170000-0x00000000001EF000-memory.dmp

            Filesize

            508KB

          • memory/2572-45-0x0000000000170000-0x00000000001EF000-memory.dmp

            Filesize

            508KB

          • memory/2572-47-0x0000000000170000-0x00000000001EF000-memory.dmp

            Filesize

            508KB

          • memory/2572-46-0x0000000000170000-0x00000000001EF000-memory.dmp

            Filesize

            508KB

          • memory/2572-48-0x0000000000170000-0x00000000001EF000-memory.dmp

            Filesize

            508KB

          • memory/2840-33-0x0000000000400000-0x0000000000424000-memory.dmp

            Filesize

            144KB

          • memory/2840-34-0x0000000000400000-0x0000000000424000-memory.dmp

            Filesize

            144KB

          • memory/2840-32-0x0000000000400000-0x0000000000424000-memory.dmp

            Filesize

            144KB