Analysis

  • max time kernel
    150s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20240419-en
  • resource tags

    arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
  • submitted
    01-06-2024 03:28

General

  • Target

    cf8d4798baec65113dab7c4b195fff33adc732dba2de9951195bcb06115eb034.exe

  • Size

    66KB

  • MD5

    49fbfdd2a04dbf9c0c4550d0bb4763e3

  • SHA1

    d9d5ed726dd707da03ba6edfb4bd8e73e53599ba

  • SHA256

    cf8d4798baec65113dab7c4b195fff33adc732dba2de9951195bcb06115eb034

  • SHA512

    12dcfce9b2d2fe6d9706d8cf042ef94b5201949314dda266b1dfc9e0f4673431f1757ff3366cb759650fce28e104c3dda7b6ccb2379874f6c58f668b471e3382

  • SSDEEP

    1536:EHfetdklPp+07gDSrB8Xru2zGeJxgawTzpXzrDJrXic:IeklMMYJhqezw/pXzH9ic

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
  • 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 12 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\cf8d4798baec65113dab7c4b195fff33adc732dba2de9951195bcb06115eb034.exe
    "C:\Users\Admin\AppData\Local\Temp\cf8d4798baec65113dab7c4b195fff33adc732dba2de9951195bcb06115eb034.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1148
    • \??\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
      • Drops file in Windows directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:632
      • \??\c:\windows\system\spoolsv.exe
        c:\windows\system\spoolsv.exe SE
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Drops file in Windows directory
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2724
        • \??\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
          • Drops file in Windows directory
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: GetForegroundWindowSpam
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:2272
          • \??\c:\windows\system\spoolsv.exe
            c:\windows\system\spoolsv.exe PR
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetWindowsHookEx
            PID:2648
          • C:\Windows\SysWOW64\at.exe
            at 03:30 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
            5⤵
              PID:2368
            • C:\Windows\SysWOW64\at.exe
              at 03:31 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
              5⤵
                PID:1652
              • C:\Windows\SysWOW64\at.exe
                at 03:32 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
                5⤵
                  PID:3032

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          66KB

          MD5

          36cf1ea7bf24f7675544ec10d353bb86

          SHA1

          f05ae38680b0570411d36546ab0b7f021a6ffc0e

          SHA256

          557b3e32ab5ad26a24b667defeb9c1f2990da21dc1493cc0c6a3b71eaee80792

          SHA512

          8c303c4dac975f028a06da4d067016f897c751e0f8548fd6d5e186432a0b0c1de34f3b242d6bbd1a4d1ec73db920e6931ac7f09dbfb8c37e052820563eccc620

        • \Windows\system\explorer.exe

          Filesize

          66KB

          MD5

          b8dbecb7fcee6ded7424ee4b172f65be

          SHA1

          8a82a45b29975eae26d521e27544858bc3defb69

          SHA256

          1bc2fc62b29919924799dc523702760707b645939742b84939ec96588d9905a4

          SHA512

          2eb66b9f24c10c6f0c854fc6be65203ac772edd8592a671e660c51838c4e971b1ed84ddc12981c734e3203ae3958fc12e71b65d12198f89fb6f2058328527423

        • \Windows\system\spoolsv.exe

          Filesize

          66KB

          MD5

          b1163182380adceed277634f786a5044

          SHA1

          ec362c5874101945a31ba55d683852e9f9d143c3

          SHA256

          30eb97c26b21f4cd22918c06f8b35da6af8f057dffba71b859f61b3c3fc949d3

          SHA512

          956279aca8a61cb31487b1c91fc6291c5fd79b986aa923b078e873bf94ad36c8ff70d04741c5e2c99eeff2de853fa8a4851cfde4ed92b673ff58d2d5ce44eda4

        • \Windows\system\svchost.exe

          Filesize

          66KB

          MD5

          a7776974256d215340f566f17bf2007e

          SHA1

          62fa07b7de91d7c5352c5ee9d77757347a28a848

          SHA256

          c1a4ac4a17190377f8586355eb731371208b9d98653531050dfa0be0601377c9

          SHA512

          f0c5da5ee7f1dc722ce8bc3062d7bc53f77110b8df384d93d73eb5c05cb85ee848b1f1f34f028eabea9f2e06ef67ddddc68382a76832603a498ec4af8ec39f94

        • memory/632-92-0x0000000000400000-0x0000000000431000-memory.dmp

          Filesize

          196KB

        • memory/632-82-0x0000000000400000-0x0000000000431000-memory.dmp

          Filesize

          196KB

        • memory/632-67-0x0000000000400000-0x0000000000431000-memory.dmp

          Filesize

          196KB

        • memory/632-19-0x0000000000400000-0x0000000000431000-memory.dmp

          Filesize

          196KB

        • memory/632-35-0x0000000003110000-0x0000000003141000-memory.dmp

          Filesize

          196KB

        • memory/632-22-0x0000000000400000-0x0000000000431000-memory.dmp

          Filesize

          196KB

        • memory/632-20-0x0000000072940000-0x0000000072A93000-memory.dmp

          Filesize

          1.3MB

        • memory/1148-18-0x0000000003270000-0x00000000032A1000-memory.dmp

          Filesize

          196KB

        • memory/1148-2-0x0000000072940000-0x0000000072A93000-memory.dmp

          Filesize

          1.3MB

        • memory/1148-1-0x0000000000020000-0x0000000000024000-memory.dmp

          Filesize

          16KB

        • memory/1148-0-0x0000000000400000-0x0000000000431000-memory.dmp

          Filesize

          196KB

        • memory/1148-3-0x0000000000400000-0x0000000000431000-memory.dmp

          Filesize

          196KB

        • memory/1148-13-0x0000000003270000-0x00000000032A1000-memory.dmp

          Filesize

          196KB

        • memory/1148-54-0x0000000000020000-0x0000000000024000-memory.dmp

          Filesize

          16KB

        • memory/1148-5-0x0000000000401000-0x000000000042E000-memory.dmp

          Filesize

          180KB

        • memory/1148-79-0x0000000000401000-0x000000000042E000-memory.dmp

          Filesize

          180KB

        • memory/1148-56-0x0000000000401000-0x000000000042E000-memory.dmp

          Filesize

          180KB

        • memory/1148-78-0x0000000000400000-0x0000000000431000-memory.dmp

          Filesize

          196KB

        • memory/2272-57-0x0000000072940000-0x0000000072A93000-memory.dmp

          Filesize

          1.3MB

        • memory/2272-61-0x0000000000400000-0x0000000000431000-memory.dmp

          Filesize

          196KB

        • memory/2272-83-0x0000000000400000-0x0000000000431000-memory.dmp

          Filesize

          196KB

        • memory/2648-68-0x0000000072940000-0x0000000072A93000-memory.dmp

          Filesize

          1.3MB

        • memory/2648-74-0x0000000000400000-0x0000000000431000-memory.dmp

          Filesize

          196KB

        • memory/2724-37-0x0000000000400000-0x0000000000431000-memory.dmp

          Filesize

          196KB

        • memory/2724-55-0x00000000025E0000-0x0000000002611000-memory.dmp

          Filesize

          196KB

        • memory/2724-80-0x0000000000400000-0x0000000000431000-memory.dmp

          Filesize

          196KB

        • memory/2724-42-0x0000000000400000-0x0000000000431000-memory.dmp

          Filesize

          196KB

        • memory/2724-38-0x0000000072940000-0x0000000072A93000-memory.dmp

          Filesize

          1.3MB