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Analysis

  • max time kernel
    2s
  • max time network
    109s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26/12/2023, 11:50

General

  • Target

    6c291243393d267250d505ba4c27195a.exe

  • Size

    512KB

  • MD5

    6c291243393d267250d505ba4c27195a

  • SHA1

    7e83b699350852b83ea9a64143a3e1ebb958e677

  • SHA256

    d74b4718c7a0600e9b5194f97ce96acffb96da0c7dd55da02fb5fee051e29ade

  • SHA512

    dd9a19f454add4c7b2f3ddaa4804afee65e68e9409142cb8717ddd0ee80d59e54f3eb458c05f62fafd6d99439e5d04ab7675c6ba76781cb9ed3f15d8ed2e9202

  • SSDEEP

    6144:1VY0W0sVVZ/dkq5BCoFaJ2i5Lf24C07N5OvSLTUF6pQxI6Upe2cBnTu19bcodj6K:1gDhdkq5BCoC5LfWSLTUQpr2Zu19Qm57

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
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 5 IoCs
  • 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 7 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 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 20 IoCs
  • Suspicious behavior: AddClipboardFormatListener 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of FindShellTrayWindow 18 IoCs
  • Suspicious use of SendNotifyMessage 18 IoCs
  • Suspicious use of SetWindowsHookEx 7 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\6c291243393d267250d505ba4c27195a.exe
    "C:\Users\Admin\AppData\Local\Temp\6c291243393d267250d505ba4c27195a.exe"
    1⤵
    • Checks computer location settings
    • 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:2088
    • C:\Windows\SysWOW64\nszynhsmaf.exe
      nszynhsmaf.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
      • 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:380
      • C:\Windows\SysWOW64\cplmsbig.exe
        C:\Windows\system32\cplmsbig.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:3888
    • C:\Windows\SysWOW64\xwgefrkeoeelb.exe
      xwgefrkeoeelb.exe
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:3660
    • C:\Windows\SysWOW64\cplmsbig.exe
      cplmsbig.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:4904
    • C:\Windows\SysWOW64\xcjlvlluubxdeoz.exe
      xcjlvlluubxdeoz.exe
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:3680
    • C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE
      "C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Windows\mydoc.rtf" /o ""
      2⤵
      • Drops file in Windows directory
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious use of SetWindowsHookEx
      PID:4236

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Windows\SysWOW64\nszynhsmaf.exe

    Filesize

    129KB

    MD5

    72c717bda8d4788d97fdc2113ac32abf

    SHA1

    60746eb84f5c57cd6dd1b154c730e11064fc5364

    SHA256

    66f715d2e6489426ddd3d4dfe65e97da80ea70dabf3320316b811c23ef130a54

    SHA512

    c6c0c628e04d96e514cec0d9851e135993b9d92222f9e3aaad662be75a5d40faa0575d6400dc7e5a7ce92d97f3922e20eb2542f002a673ebe81d04c41e3d0ac7

  • C:\Windows\SysWOW64\nszynhsmaf.exe

    Filesize

    512KB

    MD5

    a224961a4ed2cef5a984f4460eebd6f3

    SHA1

    46ebc5523d9718d250f7541ec88a5846f9b62f6c

    SHA256

    b9e6dff7d4d57c56ebceb8d254aef2a8f218308823942b7b65501d0c77f4180f

    SHA512

    2f19939825772f8099ab599d54ede0f23ba855e265fdd8adcfc30750ff19f12614aca1bdb852d7d425a1531fb5d3b05dd708f6b8e602039c431090a8a503c913

  • C:\Windows\SysWOW64\xcjlvlluubxdeoz.exe

    Filesize

    512KB

    MD5

    7e5a4c24bcd3a6200b9e9b14732ec420

    SHA1

    1b4fe62d898ee81402682e1e37a17878af52dbb5

    SHA256

    f45d1d736028ae954969fe89c97a46da6e1c8331a6dbc89e76efe1b631d0a527

    SHA512

    a7b9608c8aea1eeaa6bbfef19056012af6d90cc937423a8098a487678a88471395ca801642eb4abb9942a071b076d69cf3763583c7bfda620b91f2732a6f21f0

  • C:\Windows\SysWOW64\xwgefrkeoeelb.exe

    Filesize

    92KB

    MD5

    6662b185f19fbf697c56a25c92de7961

    SHA1

    0df0c0df0de3724258df2549c583e3c934aca726

    SHA256

    c11edb9e97848e20319fba876d9382c7193f68323eff1f7ed805bb04303bdc86

    SHA512

    c6e2cb83f68a63ca299dae843d2697d41dab8b565fb4005755b0d255b388779b6c1dad97375009c995f0a3d2e0acb4cc820090ca5dc24ee11e1a3de5b1a4921f

  • C:\Windows\SysWOW64\xwgefrkeoeelb.exe

    Filesize

    512KB

    MD5

    4d24539f4c10d4a7570fb757ad63c10b

    SHA1

    b91a8376871618ea455f467dab7a8bda4629d3e8

    SHA256

    768fad511a3555ce8678a6559e4a0fc1375318df9e314c3d3e433e1da30ca144

    SHA512

    1f56ffc9fec19bf0e980bb91fa1e74b772f832c207a6515fb0ffc5f69ee31cdd0b4b0203560732d7eeeb7ff43a558badbfacddb262168037e24d7fdb25a1908b

  • memory/2088-0-0x0000000000400000-0x0000000000496000-memory.dmp

    Filesize

    600KB

  • memory/4236-53-0x00007FFB663B0000-0x00007FFB665A5000-memory.dmp

    Filesize

    2.0MB

  • memory/4236-47-0x00007FFB663B0000-0x00007FFB665A5000-memory.dmp

    Filesize

    2.0MB

  • memory/4236-42-0x00007FFB663B0000-0x00007FFB665A5000-memory.dmp

    Filesize

    2.0MB

  • memory/4236-48-0x00007FFB663B0000-0x00007FFB665A5000-memory.dmp

    Filesize

    2.0MB

  • memory/4236-51-0x00007FFB663B0000-0x00007FFB665A5000-memory.dmp

    Filesize

    2.0MB

  • memory/4236-54-0x00007FFB23AD0000-0x00007FFB23AE0000-memory.dmp

    Filesize

    64KB

  • memory/4236-57-0x00007FFB663B0000-0x00007FFB665A5000-memory.dmp

    Filesize

    2.0MB

  • memory/4236-58-0x00007FFB663B0000-0x00007FFB665A5000-memory.dmp

    Filesize

    2.0MB

  • memory/4236-59-0x00007FFB23AD0000-0x00007FFB23AE0000-memory.dmp

    Filesize

    64KB

  • memory/4236-56-0x00007FFB663B0000-0x00007FFB665A5000-memory.dmp

    Filesize

    2.0MB

  • memory/4236-55-0x00007FFB663B0000-0x00007FFB665A5000-memory.dmp

    Filesize

    2.0MB

  • memory/4236-35-0x00007FFB26430000-0x00007FFB26440000-memory.dmp

    Filesize

    64KB

  • memory/4236-52-0x00007FFB663B0000-0x00007FFB665A5000-memory.dmp

    Filesize

    2.0MB

  • memory/4236-50-0x00007FFB663B0000-0x00007FFB665A5000-memory.dmp

    Filesize

    2.0MB

  • memory/4236-49-0x00007FFB663B0000-0x00007FFB665A5000-memory.dmp

    Filesize

    2.0MB

  • memory/4236-37-0x00007FFB26430000-0x00007FFB26440000-memory.dmp

    Filesize

    64KB

  • memory/4236-46-0x00007FFB663B0000-0x00007FFB665A5000-memory.dmp

    Filesize

    2.0MB

  • memory/4236-45-0x00007FFB26430000-0x00007FFB26440000-memory.dmp

    Filesize

    64KB

  • memory/4236-43-0x00007FFB26430000-0x00007FFB26440000-memory.dmp

    Filesize

    64KB

  • memory/4236-44-0x00007FFB663B0000-0x00007FFB665A5000-memory.dmp

    Filesize

    2.0MB

  • memory/4236-40-0x00007FFB26430000-0x00007FFB26440000-memory.dmp

    Filesize

    64KB

  • memory/4236-38-0x00007FFB663B0000-0x00007FFB665A5000-memory.dmp

    Filesize

    2.0MB

  • memory/4236-36-0x00007FFB663B0000-0x00007FFB665A5000-memory.dmp

    Filesize

    2.0MB

  • memory/4236-116-0x00007FFB663B0000-0x00007FFB665A5000-memory.dmp

    Filesize

    2.0MB

  • memory/4236-117-0x00007FFB663B0000-0x00007FFB665A5000-memory.dmp

    Filesize

    2.0MB

  • memory/4236-118-0x00007FFB663B0000-0x00007FFB665A5000-memory.dmp

    Filesize

    2.0MB

  • memory/4236-119-0x00007FFB663B0000-0x00007FFB665A5000-memory.dmp

    Filesize

    2.0MB

  • memory/4236-145-0x00007FFB663B0000-0x00007FFB665A5000-memory.dmp

    Filesize

    2.0MB

  • memory/4236-144-0x00007FFB26430000-0x00007FFB26440000-memory.dmp

    Filesize

    64KB

  • memory/4236-143-0x00007FFB26430000-0x00007FFB26440000-memory.dmp

    Filesize

    64KB

  • memory/4236-142-0x00007FFB26430000-0x00007FFB26440000-memory.dmp

    Filesize

    64KB

  • memory/4236-141-0x00007FFB26430000-0x00007FFB26440000-memory.dmp

    Filesize

    64KB