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Analysis

  • max time kernel
    150s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    02/06/2024, 20:40

General

  • Target

    3511f46e5a8756eb55109c119413b5a403a6a4b48a034517263932006bcd5391.exe

  • Size

    199KB

  • MD5

    9fb28fbd3e062a1f91cf45004d2f796b

  • SHA1

    bbe609bacd8179b61b22da7a9dcd172b71505d95

  • SHA256

    3511f46e5a8756eb55109c119413b5a403a6a4b48a034517263932006bcd5391

  • SHA512

    16ecae84da06a6b33ec52abf60373a163fbb354352124211558ae2a0013b7807f70cddedd78c888f624dc0d6180685926df2dbdfa27bd88a1c0ab52c67c02c90

  • SSDEEP

    3072:7vEfVUzSLhIVbV6i5LirrlZrHyrUHUckoMQ2RN6u4Pmu1:7vEN2U+T6i5LirrllHy4HUcMQY6j

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\3511f46e5a8756eb55109c119413b5a403a6a4b48a034517263932006bcd5391.exe
    "C:\Users\Admin\AppData\Local\Temp\3511f46e5a8756eb55109c119413b5a403a6a4b48a034517263932006bcd5391.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1652
    • \??\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:2168
      • \??\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:3052
        • \??\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:2600
          • \??\c:\windows\system\spoolsv.exe
            c:\windows\system\spoolsv.exe PR
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetWindowsHookEx
            PID:2608
          • C:\Windows\SysWOW64\at.exe
            at 20:42 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
            5⤵
              PID:2500
            • C:\Windows\SysWOW64\at.exe
              at 20:43 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
              5⤵
                PID:2780
              • C:\Windows\SysWOW64\at.exe
                at 20:44 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
                5⤵
                  PID:2644

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          216KB

          MD5

          c2260ad87bdece3aa67c3f80899b2c61

          SHA1

          3ce3f03082a3aba84e2dd0f33feab9b788938c63

          SHA256

          c8c8d0955911f6860543bed65c9f5904e13edcfd2f7e2f22f29bb60bf2013434

          SHA512

          fddc73f4d76ace6cccb14322d8d1eb0201a2aba155d94b5496707a1409c9934fcda938a5748a9ff64336b061a6226c0f239b3cc1d635eb1d692d5f2ff8c90435

        • C:\Windows\system\spoolsv.exe

          Filesize

          216KB

          MD5

          e18b8f86824c2300f2763405798e1d1a

          SHA1

          ba2fbee49bf1c569ce3ee0a143d80ce0f76fd499

          SHA256

          633550140267c0931908c885a2b66e8cf6518ec198a42fa76971868aff217c36

          SHA512

          50b872b536381136527e7b387e2d3a787023cf89371c3fedb9e847b373607d411d1abe4c42982156356b9e1391b4c1e5f24fd7a2a865436a1ca4a47e1651c6a3

        • \Windows\system\explorer.exe

          Filesize

          216KB

          MD5

          8041e391a96dbf3a47211edffa25f7d5

          SHA1

          b4cea4c1d115b35a0f80085aaa70e9d8cdebaf76

          SHA256

          ee4daea1e059f77bc1ffe3c4a3b6e7d003d7626e0f021ccc996de2416766dbb5

          SHA512

          920fec3ed2309136a74d16d9d5acc37294dbb6e157c27d946a92a646a7e77e9facdfef9f2fec59b0dc0a849052e984a7ea67ec1af005fd3fa912b3c213352ae4

        • \Windows\system\svchost.exe

          Filesize

          216KB

          MD5

          cf3d7cf5909f2c40266e15e4238f1756

          SHA1

          c0355643eaec8191d00ae244c03b4ba80ad158d1

          SHA256

          850cc1bb496e608b1b0b1fef5ed08e7196cf01238e4aadace922c0eb64cb61a5

          SHA512

          346c13466f81670aa6f1cc9e594d53cea616877da9010fb777b7fa3bc12566d2c77253f3b4b034dc01d5e0dc4d50c23fb43df1d7e36d9545f42057b49545f308

        • memory/1652-0-0x0000000000400000-0x0000000000431000-memory.dmp

          Filesize

          196KB

        • memory/1652-53-0x0000000000400000-0x0000000000431000-memory.dmp

          Filesize

          196KB

        • memory/2168-25-0x00000000026B0000-0x00000000026E1000-memory.dmp

          Filesize

          196KB

        • memory/2608-50-0x0000000000400000-0x0000000000431000-memory.dmp

          Filesize

          196KB