Analysis

  • max time kernel
    148s
  • max time network
    41s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    03-12-2022 01:09

General

  • Target

    fdcf081b885009ff6ae21587989410a0c861f9f2e7acd2e11a544ccc2d899020.exe

  • Size

    227KB

  • MD5

    1926d5d9eb5e4354f18083916de108f0

  • SHA1

    f54ca406b5d189b19bdd2124c71660b921945cdb

  • SHA256

    fdcf081b885009ff6ae21587989410a0c861f9f2e7acd2e11a544ccc2d899020

  • SHA512

    32a58a5d68ac70f719f4fb86ed198171ae70c0f34e3d5b623722de7e407ed66caf2d19d37deb3d1590063f5bb1ae2911e4226739f0a33f9e5714479c8e7e3ae5

  • SSDEEP

    3072:mq6zDsoY9iUeCRvRpR5RhD/HzkfVtLrNFSDg6w3x5VdO3huCFOnYit8aQ:mqKC9X/L/cVtLxthdGhvOf

Malware Config

Extracted

Family

metasploit

Version

encoder/call4_dword_xor

Signatures

  • MetaSploit

    Detected malicious payload which is part of the Metasploit Framework, likely generated with msfvenom or similar.

  • Modifies firewall policy service 2 TTPs 8 IoCs
  • Adds policy Run key to start application 2 TTPs 2 IoCs
  • Executes dropped EXE 2 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Drops file in Windows directory 4 IoCs
  • Modifies registry key 1 TTPs 4 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\fdcf081b885009ff6ae21587989410a0c861f9f2e7acd2e11a544ccc2d899020.exe
    "C:\Users\Admin\AppData\Local\Temp\fdcf081b885009ff6ae21587989410a0c861f9f2e7acd2e11a544ccc2d899020.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1976
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1316
      • C:\Windows\SysWOW64\reg.exe
        REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
        3⤵
        • Modifies firewall policy service
        • Modifies registry key
        PID:1964
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Users\Admin\AppData\Local\Temp\fdcf081b885009ff6ae21587989410a0c861f9f2e7acd2e11a544ccc2d899020.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\fdcf081b885009ff6ae21587989410a0c861f9f2e7acd2e11a544ccc2d899020.exe:*:Enabled:Windows Messanger" /f
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1856
      • C:\Windows\SysWOW64\reg.exe
        REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Users\Admin\AppData\Local\Temp\fdcf081b885009ff6ae21587989410a0c861f9f2e7acd2e11a544ccc2d899020.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\fdcf081b885009ff6ae21587989410a0c861f9f2e7acd2e11a544ccc2d899020.exe:*:Enabled:Windows Messanger" /f
        3⤵
        • Modifies firewall policy service
        • Modifies registry key
        PID:1740
    • C:\Users\Admin\AppData\Local\Temp\fdcf081b885009ff6ae21587989410a0c861f9f2e7acd2e11a544ccc2d899020.exe
      "C:\Users\Admin\AppData\Local\Temp\fdcf081b885009ff6ae21587989410a0c861f9f2e7acd2e11a544ccc2d899020.exe"
      2⤵
      • Adds policy Run key to start application
      • Adds Run key to start application
      • Drops file in Windows directory
      • Suspicious use of WriteProcessMemory
      PID:1116
      • C:\Windows\sysdiag64.exe
        "C:\Windows\sysdiag64.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:692
        • C:\Windows\SysWOW64\cmd.exe
          cmd /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
          4⤵
            PID:1700
            • C:\Windows\SysWOW64\reg.exe
              REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
              5⤵
              • Modifies firewall policy service
              • Modifies registry key
              PID:1464
          • C:\Windows\SysWOW64\cmd.exe
            cmd /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Windows\sysdiag64.exe" /t REG_SZ /d "C:\Windows\sysdiag64.exe:*:Enabled:Windows Messanger" /f
            4⤵
              PID:1504
              • C:\Windows\SysWOW64\reg.exe
                REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Windows\sysdiag64.exe" /t REG_SZ /d "C:\Windows\sysdiag64.exe:*:Enabled:Windows Messanger" /f
                5⤵
                • Modifies firewall policy service
                • Modifies registry key
                PID:268
            • C:\Windows\sysdiag64.exe
              "C:\Windows\sysdiag64.exe"
              4⤵
              • Executes dropped EXE
              • Drops file in Windows directory
              PID:804

      Network

      MITRE ATT&CK Matrix ATT&CK v6

      Persistence

      Modify Existing Service

      1
      T1031

      Registry Run Keys / Startup Folder

      2
      T1060

      Defense Evasion

      Modify Registry

      4
      T1112

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Windows\sysdiag64.exe
        Filesize

        227KB

        MD5

        1926d5d9eb5e4354f18083916de108f0

        SHA1

        f54ca406b5d189b19bdd2124c71660b921945cdb

        SHA256

        fdcf081b885009ff6ae21587989410a0c861f9f2e7acd2e11a544ccc2d899020

        SHA512

        32a58a5d68ac70f719f4fb86ed198171ae70c0f34e3d5b623722de7e407ed66caf2d19d37deb3d1590063f5bb1ae2911e4226739f0a33f9e5714479c8e7e3ae5

      • C:\Windows\sysdiag64.exe
        Filesize

        227KB

        MD5

        1926d5d9eb5e4354f18083916de108f0

        SHA1

        f54ca406b5d189b19bdd2124c71660b921945cdb

        SHA256

        fdcf081b885009ff6ae21587989410a0c861f9f2e7acd2e11a544ccc2d899020

        SHA512

        32a58a5d68ac70f719f4fb86ed198171ae70c0f34e3d5b623722de7e407ed66caf2d19d37deb3d1590063f5bb1ae2911e4226739f0a33f9e5714479c8e7e3ae5

      • C:\Windows\sysdiag64.exe
        Filesize

        227KB

        MD5

        1926d5d9eb5e4354f18083916de108f0

        SHA1

        f54ca406b5d189b19bdd2124c71660b921945cdb

        SHA256

        fdcf081b885009ff6ae21587989410a0c861f9f2e7acd2e11a544ccc2d899020

        SHA512

        32a58a5d68ac70f719f4fb86ed198171ae70c0f34e3d5b623722de7e407ed66caf2d19d37deb3d1590063f5bb1ae2911e4226739f0a33f9e5714479c8e7e3ae5

      • memory/268-110-0x0000000000000000-mapping.dmp
      • memory/692-107-0x0000000000400000-0x000000000043D000-memory.dmp
        Filesize

        244KB

      • memory/692-85-0x0000000000000000-mapping.dmp
      • memory/804-116-0x0000000000230000-0x000000000026D000-memory.dmp
        Filesize

        244KB

      • memory/804-115-0x0000000000400000-0x0000000000473000-memory.dmp
        Filesize

        460KB

      • memory/804-114-0x0000000000400000-0x0000000000473000-memory.dmp
        Filesize

        460KB

      • memory/804-113-0x0000000000230000-0x000000000026D000-memory.dmp
        Filesize

        244KB

      • memory/804-102-0x000000000040AD48-mapping.dmp
      • memory/1116-65-0x0000000000400000-0x0000000000473000-memory.dmp
        Filesize

        460KB

      • memory/1116-63-0x0000000000400000-0x0000000000473000-memory.dmp
        Filesize

        460KB

      • memory/1116-72-0x000000000040AD48-mapping.dmp
      • memory/1116-75-0x0000000000400000-0x0000000000473000-memory.dmp
        Filesize

        460KB

      • memory/1116-112-0x0000000000400000-0x0000000000473000-memory.dmp
        Filesize

        460KB

      • memory/1116-111-0x00000000001C0000-0x00000000001FD000-memory.dmp
        Filesize

        244KB

      • memory/1116-62-0x0000000000400000-0x0000000000473000-memory.dmp
        Filesize

        460KB

      • memory/1116-69-0x0000000000400000-0x0000000000473000-memory.dmp
        Filesize

        460KB

      • memory/1116-68-0x0000000000400000-0x0000000000473000-memory.dmp
        Filesize

        460KB

      • memory/1116-71-0x0000000000400000-0x0000000000473000-memory.dmp
        Filesize

        460KB

      • memory/1116-66-0x0000000000400000-0x0000000000473000-memory.dmp
        Filesize

        460KB

      • memory/1316-60-0x0000000000000000-mapping.dmp
      • memory/1464-108-0x0000000000000000-mapping.dmp
      • memory/1504-90-0x0000000000000000-mapping.dmp
      • memory/1700-89-0x0000000000000000-mapping.dmp
      • memory/1740-81-0x0000000000000000-mapping.dmp
      • memory/1856-61-0x0000000000000000-mapping.dmp
      • memory/1964-82-0x0000000000000000-mapping.dmp
      • memory/1976-54-0x0000000000400000-0x000000000043D000-memory.dmp
        Filesize

        244KB

      • memory/1976-77-0x0000000000400000-0x000000000043D000-memory.dmp
        Filesize

        244KB

      • memory/1976-80-0x00000000001C0000-0x00000000001CD000-memory.dmp
        Filesize

        52KB

      • memory/1976-59-0x00000000001C0000-0x00000000001FD000-memory.dmp
        Filesize

        244KB

      • memory/1976-58-0x00000000001C0000-0x00000000001FD000-memory.dmp
        Filesize

        244KB

      • memory/1976-55-0x00000000762B1000-0x00000000762B3000-memory.dmp
        Filesize

        8KB