Analysis

  • max time kernel
    149s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    22/01/2024, 17:33

General

  • Target

    6fe5356559982bbf4116111c0632fb98.exe

  • Size

    255KB

  • MD5

    6fe5356559982bbf4116111c0632fb98

  • SHA1

    1d891d94ec308ad9e279c09f41b16e0d1e0e129d

  • SHA256

    c719a47f18282dbf9aa30d906592bed5e1baf073e322dd3902b20e12ee90a197

  • SHA512

    f7be79a3d1f4de4ded4a9f97d45ebcda0fee550d2016c4fa4d9ff04abb1dbb930d9c9bd0cbba19ccd8fe9bff2df6f444f393388dc80f118df16ad8f9f8764f30

  • SSDEEP

    3072:MMDb50WrZa8jCgae5+VQkGdUQFDxePZ2SBaQJXkNRtXlNGKaUIQW/qlQBG3mmTJ3:1xlZam+akqx6YQJXcNlEHUIQeE3mmBIw

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
  • 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.

  • UPX packed file 64 IoCs

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

  • Windows security modification 2 TTPs 6 IoCs
  • Adds Run key to start application 2 TTPs 3 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 58 IoCs

    AutoIT scripts compiled to PE executables.

  • Drops file in System32 directory 9 IoCs
  • Drops file in Program Files directory 21 IoCs
  • Drops file in Windows directory 5 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • 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\6fe5356559982bbf4116111c0632fb98.exe
    "C:\Users\Admin\AppData\Local\Temp\6fe5356559982bbf4116111c0632fb98.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in System32 directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:2108
    • C:\Windows\SysWOW64\pzjpbugjbe.exe
      pzjpbugjbe.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:3048
      • C:\Windows\SysWOW64\nxxqtsfk.exe
        C:\Windows\system32\nxxqtsfk.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:2612
    • 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:2752
      • C:\Windows\splwow64.exe
        C:\Windows\splwow64.exe 12288
        3⤵
          PID:2320
      • C:\Windows\SysWOW64\nqctxscikizju.exe
        nqctxscikizju.exe
        2⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:2804
      • C:\Windows\SysWOW64\nxxqtsfk.exe
        nxxqtsfk.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:2036
      • C:\Windows\SysWOW64\gkwqipydgtuszva.exe
        gkwqipydgtuszva.exe
        2⤵
        • Executes dropped EXE
        • Adds Run key to start application
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:1164

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

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

      Filesize

      255KB

      MD5

      6fbbdfd2a4a6b13a78a31747f68afa1a

      SHA1

      688607336bd37cd78f69550952921070c7dda866

      SHA256

      f6642408fd2c39b7b8596c0a1b7c85261eeb83c108522c94ad198b2d39ffbc28

      SHA512

      cdffcf0bfdc2f683b3b600cfcb3cb3db9d0da674a3cbfbdd2a5bc89af9c3ffe472287d08caa7aca5f535ead26321eef539e36e19b13b7a933643c853980a247d

    • C:\Users\Admin\AppData\Roaming\Microsoft\Templates\Normal.dotm

      Filesize

      20KB

      MD5

      41d17931c01d4b80c5b5e407a3f714e6

      SHA1

      c2082c0f37b8f01a9defb2f86e0d0363aeac1a97

      SHA256

      f6d7b4e90935c8cfbb0cdfbaba2a96ae2e8ec8f39cb148c551bb750b28bbbf9b

      SHA512

      988f93e3d700ed9e0bc2d2e6cb50edb2d87ddb11449841f4669ce9a29825f21b8be51541ae0d9a3fff4e89c4434dbb32373e7d7b7949252c1cbc1f0b6b966cb0

    • C:\Windows\SysWOW64\gkwqipydgtuszva.exe

      Filesize

      255KB

      MD5

      6414a2a81cdfc4950287ed9aee38757c

      SHA1

      4a6a80845d3ae8d00304a35556428c10b0463e03

      SHA256

      021063d9e8c3b348209f45a39df9410c0fbae832f48d5d510d595d959c132864

      SHA512

      3d56ee716a81fc549cd2831097dac5dc97b7efeb007bb5fc04868c56c27985ab259326c42268244464c5f7eabe98d3dd84e250ff50174b363ccf5e51577d35a5

    • C:\Windows\SysWOW64\gkwqipydgtuszva.exe

      Filesize

      255KB

      MD5

      6fe5356559982bbf4116111c0632fb98

      SHA1

      1d891d94ec308ad9e279c09f41b16e0d1e0e129d

      SHA256

      c719a47f18282dbf9aa30d906592bed5e1baf073e322dd3902b20e12ee90a197

      SHA512

      f7be79a3d1f4de4ded4a9f97d45ebcda0fee550d2016c4fa4d9ff04abb1dbb930d9c9bd0cbba19ccd8fe9bff2df6f444f393388dc80f118df16ad8f9f8764f30

    • C:\Windows\mydoc.rtf

      Filesize

      223B

      MD5

      06604e5941c126e2e7be02c5cd9f62ec

      SHA1

      4eb9fdf8ff4e1e539236002bd363b82c8f8930e1

      SHA256

      85f2405d1f67021a3206faa26f6887932fea71aea070df3efb2902902e2d03e2

      SHA512

      803f5f2fddbf29fef34de184eb35c2311b7a694740983ca10b54ef252dd26cda4987458d2569f441c6dedc3478bea12b45bfd3566f1b256504a0869ad3829df7

    • \Windows\SysWOW64\nqctxscikizju.exe

      Filesize

      255KB

      MD5

      55af22438ea76da0d81fff422b7f939a

      SHA1

      e1c26a32f4950c64a0fce68cd6928dd9dd1b2a17

      SHA256

      6266a80e5717d6479ea0294eda36ece4733336c84044b12bb5e2e969f4272696

      SHA512

      bfc0a9364604f32ab6d394015b06ce6a6d14f3f566bba75df717870f08a7f8bbfba4bc3adf4231598d3dbb4156d7b42329718c37535e22989bd137dfe43c9830

    • \Windows\SysWOW64\nxxqtsfk.exe

      Filesize

      255KB

      MD5

      1de9877cee4b043e7d31c98bb659f941

      SHA1

      2b33d4209927085b3631e444e46d9e1f09f3575f

      SHA256

      068528c7ba7a7485ab64893888f8a300b819f5fd30b1b6543c4fcb4fe578a824

      SHA512

      a6dfd33ba7c5220ca5fa40444bd82598526911951c8a4f73018d6b5d8735926d918e36238c479e599d97cc6d649d3dd0856a9c9068c4c108b5e867ff1255331c

    • \Windows\SysWOW64\pzjpbugjbe.exe

      Filesize

      255KB

      MD5

      7ad7fc44edc890aee9e0909171c70a9b

      SHA1

      1b26e6c024e56dd1db155122d4bbed1b9bea6507

      SHA256

      4f124d45d74cbda74071f59dc8dff9ae7c07e46780c4e4bfe73e520541ec7daa

      SHA512

      772f188a906cecef65b2e606fc6cfaba9669e56bfd2239ac5247e836aa4b94700347d3342f5ae780778b280d170394ea6a8864bd6f99a547acb2054be29bbdca

    • memory/1164-120-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1164-123-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1164-157-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1164-107-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1164-154-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1164-113-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1164-98-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1164-151-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1164-148-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1164-42-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1164-160-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1164-117-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1164-126-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1164-88-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1164-110-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1164-94-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/2036-41-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/2036-93-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/2036-90-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/2036-102-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/2108-18-0x0000000002EF0000-0x0000000002F90000-memory.dmp

      Filesize

      640KB

    • memory/2108-37-0x0000000002EF0000-0x0000000002F90000-memory.dmp

      Filesize

      640KB

    • memory/2108-0-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/2108-48-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/2612-47-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/2612-96-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/2612-92-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/2612-101-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/2612-103-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/2752-104-0x00000000716ED000-0x00000000716F8000-memory.dmp

      Filesize

      44KB

    • memory/2752-51-0x00000000716ED000-0x00000000716F8000-memory.dmp

      Filesize

      44KB

    • memory/2752-49-0x000000002F661000-0x000000002F662000-memory.dmp

      Filesize

      4KB

    • memory/2752-50-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/2752-146-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/2804-127-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/2804-152-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/2804-114-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/2804-161-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/2804-43-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/2804-118-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/2804-158-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/2804-121-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/2804-95-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/2804-155-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/2804-91-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/2804-124-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/2804-100-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/2804-149-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/2804-108-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/2804-111-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/3048-46-0x0000000003BE0000-0x0000000003C80000-memory.dmp

      Filesize

      640KB

    • memory/3048-122-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/3048-106-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/3048-87-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/3048-150-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/3048-26-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/3048-147-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/3048-125-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/3048-112-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/3048-153-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/3048-156-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/3048-109-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/3048-119-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/3048-159-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/3048-97-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/3048-116-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB