Analysis

  • max time kernel
    189s
  • max time network
    34s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    27/11/2022, 19:06

General

  • Target

    d4fd4b2dc0cb44ea3cf5e5a385e0b349b16f2f06ad28e5795a8aebb9bfd25314.exe

  • Size

    255KB

  • MD5

    efc72d6b8810b8d5b81a8b30679eb138

  • SHA1

    dbdd1f4308508669738829f9a16c41823ca22f7e

  • SHA256

    d4fd4b2dc0cb44ea3cf5e5a385e0b349b16f2f06ad28e5795a8aebb9bfd25314

  • SHA512

    6bd17b08faa359ce002f9770035e3edcca418165a2a99f4aeae0aedb332da582b05c8ab71e529095086527f2d509d3f562bc27962dcab3e70a641612bfcbfbe9

  • SSDEEP

    3072:MMDb50WrZa8jCgae5+VQkGdUQFDxePZ2SBaQJXkNRtXlNGKaUIQW/qlQBG3mmTJZ:1xlZam+akqx6YQJXcNlEHUIQeE3mmBIe

Malware Config

Signatures

  • Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs
  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs
  • Windows security bypass 2 TTPs 5 IoCs
  • Disables RegEdit via registry modification 1 IoCs
  • Executes dropped EXE 5 IoCs
  • UPX packed file 27 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Loads dropped DLL 5 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Windows security modification 2 TTPs 6 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Enumerates connected drives 3 TTPs 64 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Modifies WinLogon 2 TTPs 2 IoCs
  • AutoIT Executable 12 IoCs

    AutoIT scripts compiled to PE executables.

  • Drops file in System32 directory 9 IoCs
  • Drops file in Program Files directory 15 IoCs
  • Drops file in Windows directory 5 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Office loads VBA resources, possible macro or embedded object present
  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of FindShellTrayWindow 18 IoCs
  • Suspicious use of SendNotifyMessage 18 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d4fd4b2dc0cb44ea3cf5e5a385e0b349b16f2f06ad28e5795a8aebb9bfd25314.exe
    "C:\Users\Admin\AppData\Local\Temp\d4fd4b2dc0cb44ea3cf5e5a385e0b349b16f2f06ad28e5795a8aebb9bfd25314.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in System32 directory
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:1056
    • C:\Windows\SysWOW64\khfvquufuw.exe
      khfvquufuw.exe
      2⤵
      • Modifies visibility of file extensions in Explorer
      • Modifies visiblity of hidden/system files in Explorer
      • Windows security bypass
      • Disables RegEdit via registry modification
      • Executes dropped EXE
      • Loads dropped DLL
      • Windows security modification
      • Enumerates connected drives
      • Modifies WinLogon
      • Drops file in System32 directory
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:520
      • C:\Windows\SysWOW64\vfpxtmev.exe
        C:\Windows\system32\vfpxtmev.exe
        3⤵
        • Executes dropped EXE
        • Enumerates connected drives
        • Drops file in Program Files directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:1664
    • C:\Windows\SysWOW64\dncajrzybitgnyw.exe
      dncajrzybitgnyw.exe
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:1496
    • C:\Windows\SysWOW64\vfpxtmev.exe
      vfpxtmev.exe
      2⤵
      • Executes dropped EXE
      • Enumerates connected drives
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:1476
    • C:\Windows\SysWOW64\xmukhwaqxjqmc.exe
      xmukhwaqxjqmc.exe
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:476
    • C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
      "C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Windows\mydoc.rtf"
      2⤵
      • Drops file in Windows directory
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1396
      • C:\Windows\splwow64.exe
        C:\Windows\splwow64.exe 12288
        3⤵
          PID:580

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Program Files (x86)\Microsoft Office\Office14\1033\PROTTPLN.DOC.exe

      Filesize

      255KB

      MD5

      1406717b6392f52e606778de0562dee7

      SHA1

      347941a8b4b17ebaff8402e6da3a83087184315e

      SHA256

      5950e2338d2c5494ab24e4f59ee12dc0aa8527afa085a8c6d5365611a323bab6

      SHA512

      5baa8de7e99033b5bca18c66626800fa2727a6c962c51bb90c3da35238c80d103c8618d9be8bd417c49c930e45fc1643671e5eca599679ba68f0bb1ab8a0a3bf

    • C:\Windows\SysWOW64\dncajrzybitgnyw.exe

      Filesize

      255KB

      MD5

      ce100737acd901f1581e926f1299e103

      SHA1

      e1f752b2e39f580d30169351c40433b2323fdbc3

      SHA256

      78667fdb62ce06d38e6f6cb608070d8cbc60544d3cb12d1a2f80c9eee9bed7bf

      SHA512

      e51b80dcc79cf60f50e9f17ea10b59402a7a1aa57521e8e1b573ddce003a447d5fca1c867bb88999ed7e88cb83cb6cbcfa8334d2170fdeac9b8e0be4dc090a36

    • C:\Windows\SysWOW64\dncajrzybitgnyw.exe

      Filesize

      255KB

      MD5

      ce100737acd901f1581e926f1299e103

      SHA1

      e1f752b2e39f580d30169351c40433b2323fdbc3

      SHA256

      78667fdb62ce06d38e6f6cb608070d8cbc60544d3cb12d1a2f80c9eee9bed7bf

      SHA512

      e51b80dcc79cf60f50e9f17ea10b59402a7a1aa57521e8e1b573ddce003a447d5fca1c867bb88999ed7e88cb83cb6cbcfa8334d2170fdeac9b8e0be4dc090a36

    • C:\Windows\SysWOW64\khfvquufuw.exe

      Filesize

      255KB

      MD5

      e7eca567d9fc763ee5d5eebd67db877f

      SHA1

      4c90f94c7d540805393bb46e002a896d31b3c4fe

      SHA256

      f66b05ffa100071b1f2b336c43e781e4646e3f60ee25d2cb7f1b33c22e6eeb34

      SHA512

      b9bd3dc71703841c50158ed2fe862e412333a335d81204f6c2e54c163fb3c5676683fcfee611976e59377a8d67d3390b7dc252c8ab7c4988b021fec0697d77be

    • C:\Windows\SysWOW64\khfvquufuw.exe

      Filesize

      255KB

      MD5

      e7eca567d9fc763ee5d5eebd67db877f

      SHA1

      4c90f94c7d540805393bb46e002a896d31b3c4fe

      SHA256

      f66b05ffa100071b1f2b336c43e781e4646e3f60ee25d2cb7f1b33c22e6eeb34

      SHA512

      b9bd3dc71703841c50158ed2fe862e412333a335d81204f6c2e54c163fb3c5676683fcfee611976e59377a8d67d3390b7dc252c8ab7c4988b021fec0697d77be

    • C:\Windows\SysWOW64\vfpxtmev.exe

      Filesize

      255KB

      MD5

      aa59ef4b329e76bcb3d55f8709056196

      SHA1

      e1706c355108901f8ccd7fae7f8eb965fb7c31fd

      SHA256

      249aadc74c4c10f8dfa33faff7a6776c276ec04b70d5da0aa490cfd2bb549b00

      SHA512

      673afe0f49f8c251c522be087924fd66b2e1d7833040925ae7c5579b257bc008b783d8fb13236b858ed5f52ad7d2ff075dd30eea76f97b04e4cc25e8061ef711

    • C:\Windows\SysWOW64\vfpxtmev.exe

      Filesize

      255KB

      MD5

      aa59ef4b329e76bcb3d55f8709056196

      SHA1

      e1706c355108901f8ccd7fae7f8eb965fb7c31fd

      SHA256

      249aadc74c4c10f8dfa33faff7a6776c276ec04b70d5da0aa490cfd2bb549b00

      SHA512

      673afe0f49f8c251c522be087924fd66b2e1d7833040925ae7c5579b257bc008b783d8fb13236b858ed5f52ad7d2ff075dd30eea76f97b04e4cc25e8061ef711

    • C:\Windows\SysWOW64\vfpxtmev.exe

      Filesize

      255KB

      MD5

      aa59ef4b329e76bcb3d55f8709056196

      SHA1

      e1706c355108901f8ccd7fae7f8eb965fb7c31fd

      SHA256

      249aadc74c4c10f8dfa33faff7a6776c276ec04b70d5da0aa490cfd2bb549b00

      SHA512

      673afe0f49f8c251c522be087924fd66b2e1d7833040925ae7c5579b257bc008b783d8fb13236b858ed5f52ad7d2ff075dd30eea76f97b04e4cc25e8061ef711

    • C:\Windows\SysWOW64\xmukhwaqxjqmc.exe

      Filesize

      255KB

      MD5

      f3555c617dcf92f294314f4bef6de2ea

      SHA1

      89b981bfcc6f31e2ad383b20a1f464036dbab301

      SHA256

      695ae07e7e49c486ba0a4cda6c8dad205de8cb888221218de5ef22c4b0e0d32f

      SHA512

      f00e6a3ddece1fb338d47a83ace7e4b5fd34f6f3a3fcfb1d4351d84d579fa7865374cfd6d3883baf7c08c790c9c1e02259c4715ad8086bc08199594539b56a7b

    • C:\Windows\SysWOW64\xmukhwaqxjqmc.exe

      Filesize

      255KB

      MD5

      f3555c617dcf92f294314f4bef6de2ea

      SHA1

      89b981bfcc6f31e2ad383b20a1f464036dbab301

      SHA256

      695ae07e7e49c486ba0a4cda6c8dad205de8cb888221218de5ef22c4b0e0d32f

      SHA512

      f00e6a3ddece1fb338d47a83ace7e4b5fd34f6f3a3fcfb1d4351d84d579fa7865374cfd6d3883baf7c08c790c9c1e02259c4715ad8086bc08199594539b56a7b

    • C:\Windows\mydoc.rtf

      Filesize

      223B

      MD5

      06604e5941c126e2e7be02c5cd9f62ec

      SHA1

      4eb9fdf8ff4e1e539236002bd363b82c8f8930e1

      SHA256

      85f2405d1f67021a3206faa26f6887932fea71aea070df3efb2902902e2d03e2

      SHA512

      803f5f2fddbf29fef34de184eb35c2311b7a694740983ca10b54ef252dd26cda4987458d2569f441c6dedc3478bea12b45bfd3566f1b256504a0869ad3829df7

    • \Windows\SysWOW64\dncajrzybitgnyw.exe

      Filesize

      255KB

      MD5

      ce100737acd901f1581e926f1299e103

      SHA1

      e1f752b2e39f580d30169351c40433b2323fdbc3

      SHA256

      78667fdb62ce06d38e6f6cb608070d8cbc60544d3cb12d1a2f80c9eee9bed7bf

      SHA512

      e51b80dcc79cf60f50e9f17ea10b59402a7a1aa57521e8e1b573ddce003a447d5fca1c867bb88999ed7e88cb83cb6cbcfa8334d2170fdeac9b8e0be4dc090a36

    • \Windows\SysWOW64\khfvquufuw.exe

      Filesize

      255KB

      MD5

      e7eca567d9fc763ee5d5eebd67db877f

      SHA1

      4c90f94c7d540805393bb46e002a896d31b3c4fe

      SHA256

      f66b05ffa100071b1f2b336c43e781e4646e3f60ee25d2cb7f1b33c22e6eeb34

      SHA512

      b9bd3dc71703841c50158ed2fe862e412333a335d81204f6c2e54c163fb3c5676683fcfee611976e59377a8d67d3390b7dc252c8ab7c4988b021fec0697d77be

    • \Windows\SysWOW64\vfpxtmev.exe

      Filesize

      255KB

      MD5

      aa59ef4b329e76bcb3d55f8709056196

      SHA1

      e1706c355108901f8ccd7fae7f8eb965fb7c31fd

      SHA256

      249aadc74c4c10f8dfa33faff7a6776c276ec04b70d5da0aa490cfd2bb549b00

      SHA512

      673afe0f49f8c251c522be087924fd66b2e1d7833040925ae7c5579b257bc008b783d8fb13236b858ed5f52ad7d2ff075dd30eea76f97b04e4cc25e8061ef711

    • \Windows\SysWOW64\vfpxtmev.exe

      Filesize

      255KB

      MD5

      aa59ef4b329e76bcb3d55f8709056196

      SHA1

      e1706c355108901f8ccd7fae7f8eb965fb7c31fd

      SHA256

      249aadc74c4c10f8dfa33faff7a6776c276ec04b70d5da0aa490cfd2bb549b00

      SHA512

      673afe0f49f8c251c522be087924fd66b2e1d7833040925ae7c5579b257bc008b783d8fb13236b858ed5f52ad7d2ff075dd30eea76f97b04e4cc25e8061ef711

    • \Windows\SysWOW64\xmukhwaqxjqmc.exe

      Filesize

      255KB

      MD5

      f3555c617dcf92f294314f4bef6de2ea

      SHA1

      89b981bfcc6f31e2ad383b20a1f464036dbab301

      SHA256

      695ae07e7e49c486ba0a4cda6c8dad205de8cb888221218de5ef22c4b0e0d32f

      SHA512

      f00e6a3ddece1fb338d47a83ace7e4b5fd34f6f3a3fcfb1d4351d84d579fa7865374cfd6d3883baf7c08c790c9c1e02259c4715ad8086bc08199594539b56a7b

    • memory/476-84-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/476-97-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/520-80-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/520-94-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/580-101-0x000007FEFBAF1000-0x000007FEFBAF3000-memory.dmp

      Filesize

      8KB

    • memory/1056-81-0x0000000002FD0000-0x0000000003070000-memory.dmp

      Filesize

      640KB

    • memory/1056-87-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1056-55-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1056-54-0x0000000075FE1000-0x0000000075FE3000-memory.dmp

      Filesize

      8KB

    • memory/1396-93-0x000000007104D000-0x0000000071058000-memory.dmp

      Filesize

      44KB

    • memory/1396-89-0x0000000070061000-0x0000000070063000-memory.dmp

      Filesize

      8KB

    • memory/1396-90-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/1396-103-0x000000007104D000-0x0000000071058000-memory.dmp

      Filesize

      44KB

    • memory/1396-88-0x00000000725E1000-0x00000000725E4000-memory.dmp

      Filesize

      12KB

    • memory/1396-102-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/1476-83-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1476-96-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1496-95-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1496-82-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1664-98-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1664-85-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB