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Analysis

  • max time kernel
    150s
  • max time network
    127s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    07/04/2024, 23:16

General

  • Target

    8e20ced4ef597ed583128275717ee2ca42d7d80814f3dc032c775f589b07674b.exe

  • Size

    3.9MB

  • MD5

    e50f625af23074889460dc76e73f9c40

  • SHA1

    ca3f32c8bce1f7b1b8f36e03928feed509ec8e97

  • SHA256

    8e20ced4ef597ed583128275717ee2ca42d7d80814f3dc032c775f589b07674b

  • SHA512

    b3f3136921db681633b6ab7e09cd11de39bdd30959e32b2751d4a175edb42fb154c0e1a41e0c9c3ba158192a7571807a6bfd1bfab344ec67f73501fd91b591d7

  • SSDEEP

    98304:RSptXL6pUrrW1FpuvDcX9Gdsd/DQ1C75vLpve:4tbIOebX9GqBU05zpG

Score
10/10

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 2 IoCs
  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
  • Modifies Installed Components in the registry 2 TTPs 8 IoCs
  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 8 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 64 IoCs
  • Drops file in Windows directory 6 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 2 IoCs
  • Suspicious use of SetWindowsHookEx 22 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8e20ced4ef597ed583128275717ee2ca42d7d80814f3dc032c775f589b07674b.exe
    "C:\Users\Admin\AppData\Local\Temp\8e20ced4ef597ed583128275717ee2ca42d7d80814f3dc032c775f589b07674b.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1224
    • \??\c:\windows\system\explorer.exe
      c:\windows\system\explorer.exe
      2⤵
      • Modifies WinLogon for persistence
      • Modifies visiblity of hidden/system files in Explorer
      • Modifies Installed Components in the registry
      • Executes dropped EXE
      • Loads dropped DLL
      • Adds Run key to start application
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Drops file in Windows directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2956
      • \??\c:\windows\system\spoolsv.exe
        c:\windows\system\spoolsv.exe SE
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of NtSetInformationThreadHideFromDebugger
        • Drops file in Windows directory
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2492
        • \??\c:\windows\system\svchost.exe
          c:\windows\system\svchost.exe
          4⤵
          • Modifies WinLogon for persistence
          • Modifies visiblity of hidden/system files in Explorer
          • Modifies Installed Components in the registry
          • Executes dropped EXE
          • Loads dropped DLL
          • Adds Run key to start application
          • Suspicious use of NtSetInformationThreadHideFromDebugger
          • Drops file in Windows directory
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: GetForegroundWindowSpam
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:2488
          • \??\c:\windows\system\spoolsv.exe
            c:\windows\system\spoolsv.exe PR
            5⤵
            • Executes dropped EXE
            • Suspicious use of NtSetInformationThreadHideFromDebugger
            • Suspicious use of SetWindowsHookEx
            PID:3068
          • C:\Windows\SysWOW64\at.exe
            at 23:19 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
            5⤵
              PID:1488
            • C:\Windows\SysWOW64\at.exe
              at 23:20 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
              5⤵
                PID:636
              • C:\Windows\SysWOW64\at.exe
                at 23:21 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
                5⤵
                  PID:1788

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Roaming\mrsys.exe

          Filesize

          3.9MB

          MD5

          3b8e23123dc1c04b3d67acf1a250e372

          SHA1

          1008823610ab7ab5a4c5222d6e6ca17522921cc2

          SHA256

          36013f5647499e668f2d59bbbba5923b66b08b5bb300482998f12bddf7a76252

          SHA512

          7fb0f619ddfb4896769221689bf1362f16ff820f59a6b4ba12a67e0b90023bc613d540dabb64b97d14dd1cbf0662016d0cdba6db8926f84fc7e5572a58e2db00

        • \Windows\system\explorer.exe

          Filesize

          3.9MB

          MD5

          96cd97d1fad8287b2eda99e0e415a590

          SHA1

          d53dc9b372bb2fafdfe2c9de009e7fa7308c4694

          SHA256

          2a51748432b47607ed9f5c981af42299b1dc50ee86ba9550a3a2684ccd75d512

          SHA512

          aae27c1e4f1f38f65bb9299ec6440f07a2974d65edb6423690b00e5ae43125ea5a3e3b92d804576312aa172027fbbb1320a02c0c60d480fb3a6c5186200eaee8

        • \Windows\system\spoolsv.exe

          Filesize

          3.9MB

          MD5

          df2cf1dbb6eb5b70c9e7f2a6069197b7

          SHA1

          445e2faf692e0ea7e5f92144ed3e83bde8809a44

          SHA256

          5f0329dcd30623ddc085fc22268e192d7799f4f3a814a8392283fd0caf5ef111

          SHA512

          ec461a6bcc31d4438455e69b96f1d87bbeef5f0fa684340657d3cabfeb6f7dfbad0c86b7ddfa258c6585e8e66e1dc0775d468e9004d67964e68275a176fa6bb5

        • \Windows\system\svchost.exe

          Filesize

          3.9MB

          MD5

          eec21fd191c9b3e64098eb75cec30423

          SHA1

          abf611929b9793592e11f530c59422dddd12a0f3

          SHA256

          02c04ed6b78f099d2f10bf75fdab612198e68dd10f5cd0e5f3d28cb6cfdce5fa

          SHA512

          5c052a9567c8ec55abb480836060b512378a0856a1ef1084ae273dd9c00815a1264807719b3c63662993e481c0881c313399087c985d34caa0f4e81bdb7e32bc

        • memory/1224-57-0x0000000000400000-0x0000000001156000-memory.dmp

          Filesize

          13.3MB

        • memory/1224-1-0x000000007EBD0000-0x000000007EFA1000-memory.dmp

          Filesize

          3.8MB

        • memory/1224-14-0x0000000005360000-0x00000000060B6000-memory.dmp

          Filesize

          13.3MB

        • memory/1224-17-0x0000000005360000-0x00000000060B6000-memory.dmp

          Filesize

          13.3MB

        • memory/1224-0-0x0000000000400000-0x0000000001156000-memory.dmp

          Filesize

          13.3MB

        • memory/1224-69-0x000000007EBD0000-0x000000007EFA1000-memory.dmp

          Filesize

          3.8MB

        • memory/1224-67-0x0000000000400000-0x0000000001156000-memory.dmp

          Filesize

          13.3MB

        • memory/2488-74-0x0000000000400000-0x0000000001156000-memory.dmp

          Filesize

          13.3MB

        • memory/2488-91-0x0000000000400000-0x0000000001156000-memory.dmp

          Filesize

          13.3MB

        • memory/2488-50-0x000000007EBD0000-0x000000007EFA1000-memory.dmp

          Filesize

          3.8MB

        • memory/2488-102-0x0000000000400000-0x0000000001156000-memory.dmp

          Filesize

          13.3MB

        • memory/2488-61-0x0000000004FB0000-0x0000000005D06000-memory.dmp

          Filesize

          13.3MB

        • memory/2488-100-0x0000000000400000-0x0000000001156000-memory.dmp

          Filesize

          13.3MB

        • memory/2488-97-0x0000000000400000-0x0000000001156000-memory.dmp

          Filesize

          13.3MB

        • memory/2488-68-0x0000000004FB0000-0x0000000005D06000-memory.dmp

          Filesize

          13.3MB

        • memory/2488-95-0x0000000000400000-0x0000000001156000-memory.dmp

          Filesize

          13.3MB

        • memory/2488-93-0x0000000000400000-0x0000000001156000-memory.dmp

          Filesize

          13.3MB

        • memory/2488-49-0x0000000000400000-0x0000000001156000-memory.dmp

          Filesize

          13.3MB

        • memory/2488-89-0x0000000000400000-0x0000000001156000-memory.dmp

          Filesize

          13.3MB

        • memory/2488-87-0x0000000000400000-0x0000000001156000-memory.dmp

          Filesize

          13.3MB

        • memory/2488-72-0x0000000000400000-0x0000000001156000-memory.dmp

          Filesize

          13.3MB

        • memory/2488-85-0x0000000000400000-0x0000000001156000-memory.dmp

          Filesize

          13.3MB

        • memory/2488-83-0x0000000000400000-0x0000000001156000-memory.dmp

          Filesize

          13.3MB

        • memory/2488-75-0x0000000000400000-0x0000000001156000-memory.dmp

          Filesize

          13.3MB

        • memory/2488-81-0x0000000000400000-0x0000000001156000-memory.dmp

          Filesize

          13.3MB

        • memory/2488-77-0x0000000004FB0000-0x0000000005D06000-memory.dmp

          Filesize

          13.3MB

        • memory/2492-66-0x0000000000400000-0x0000000001156000-memory.dmp

          Filesize

          13.3MB

        • memory/2492-48-0x0000000005160000-0x0000000005EB6000-memory.dmp

          Filesize

          13.3MB

        • memory/2492-39-0x000000007EBD0000-0x000000007EFA1000-memory.dmp

          Filesize

          3.8MB

        • memory/2492-38-0x0000000000400000-0x0000000001156000-memory.dmp

          Filesize

          13.3MB

        • memory/2956-73-0x0000000000400000-0x0000000001156000-memory.dmp

          Filesize

          13.3MB

        • memory/2956-92-0x0000000000400000-0x0000000001156000-memory.dmp

          Filesize

          13.3MB

        • memory/2956-80-0x0000000000400000-0x0000000001156000-memory.dmp

          Filesize

          13.3MB

        • memory/2956-86-0x0000000000400000-0x0000000001156000-memory.dmp

          Filesize

          13.3MB

        • memory/2956-71-0x0000000000400000-0x0000000001156000-memory.dmp

          Filesize

          13.3MB

        • memory/2956-88-0x0000000000400000-0x0000000001156000-memory.dmp

          Filesize

          13.3MB

        • memory/2956-32-0x0000000005260000-0x0000000005FB6000-memory.dmp

          Filesize

          13.3MB

        • memory/2956-90-0x0000000000400000-0x0000000001156000-memory.dmp

          Filesize

          13.3MB

        • memory/2956-18-0x000000007EBD0000-0x000000007EFA1000-memory.dmp

          Filesize

          3.8MB

        • memory/2956-84-0x0000000000400000-0x0000000001156000-memory.dmp

          Filesize

          13.3MB

        • memory/2956-82-0x0000000000400000-0x0000000001156000-memory.dmp

          Filesize

          13.3MB

        • memory/2956-94-0x0000000000400000-0x0000000001156000-memory.dmp

          Filesize

          13.3MB

        • memory/2956-76-0x0000000000400000-0x0000000001156000-memory.dmp

          Filesize

          13.3MB

        • memory/2956-96-0x0000000000400000-0x0000000001156000-memory.dmp

          Filesize

          13.3MB

        • memory/2956-101-0x0000000000400000-0x0000000001156000-memory.dmp

          Filesize

          13.3MB

        • memory/2956-15-0x0000000000400000-0x0000000001156000-memory.dmp

          Filesize

          13.3MB

        • memory/2956-99-0x0000000000400000-0x0000000001156000-memory.dmp

          Filesize

          13.3MB

        • memory/3068-63-0x000000007EBD0000-0x000000007EFA1000-memory.dmp

          Filesize

          3.8MB

        • memory/3068-62-0x0000000000400000-0x0000000001156000-memory.dmp

          Filesize

          13.3MB

        • memory/3068-78-0x0000000000400000-0x0000000001156000-memory.dmp

          Filesize

          13.3MB