Analysis

  • max time kernel
    150s
  • max time network
    144s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260618-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260618-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    29/06/2026, 08:42

General

  • Target
    2026-06-27_31ef1146f54876e13c96e80f636017fc_elex_stop_yuner.exe
  • Size 512KB
  • Sample260629-klzdnahs8v
  • SHA256 ea6b44b8b998a589ba352146844fe1f7a926c6bcbf3b31e19bb54b4319a5b038
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs
  • Modifies visibility 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
  • Reads user/profile data of web browsers 3 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 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 12 IoCs
  • Drops file in Program Files directory 14 IoCs
  • Drops file in Windows directory 11 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Checks processor information in registry 2 TTPs 3 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • 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 9 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-06-27_31ef1146f54876e13c96e80f636017fc_elex_stop_yuner.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-06-27_31ef1146f54876e13c96e80f636017fc_elex_stop_yuner.exe"
    1⤵
    • Drops file in System32 directory
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:5904
    • C:\Windows\SysWOW64\tgdezmoepv.exe
      tgdezmoepv.exe
      2⤵
      • Modifies visibility of file extensions in Explorer
      • Modifies visibility 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
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:948
      • C:\Windows\SysWOW64\btwcwuak.exe
        C:\Windows\system32\btwcwuak.exe
        3⤵
        • Executes dropped EXE
        • Enumerates connected drives
        • Drops file in System32 directory
        • Drops file in Program Files directory
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:4740
    • C:\Windows\SysWOW64\uaycdphmtquzcvc.exe
      uaycdphmtquzcvc.exe
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:1328
    • C:\Windows\SysWOW64\btwcwuak.exe
      btwcwuak.exe
      2⤵
      • Executes dropped EXE
      • Enumerates connected drives
      • Drops file in System32 directory
      • Drops file in Program Files directory
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:5472
    • C:\Windows\SysWOW64\nfxorrivpvroj.exe
      nfxorrivpvroj.exe
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:5148
    • 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
      • Checks processor information in registry
      • Enumerates system info in registry
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious use of SetWindowsHookEx
      PID:5840

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        57C8EDB95DF3F0AD4EE2DC2B8CFD4157

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\57C8EDB95DF3F0AD4EE2DC2B8CFD4157
        • Size 4KB
        • SHA256 0300e9ddb527990e8b59d06e9ccf3ec2bd92d3bbd0ef4fba69d6336e4195e82d
        • MD5 SHA1 SHA512 SSDEEP TLSH

        index.dat

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Office\Recent\index.dat
        • Size 307B
        • SHA256 84b01f716d951ac204272d710c05b24b38c26fc30cacec028ceb6a323a3541aa
        • MD5 SHA1 SHA512 TLSH

        fb3b0dbfee58fac8.customDestinations-ms

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\fb3b0dbfee58fac8.customDestinations-ms
        • Size 2KB
        • SHA256 57561248b6576fd55d9568393704415e09ff9ebd6341fb20835d10eb56fed522
        • MD5 SHA1 SHA512 TLSH

        fb3b0dbfee58fac8.customDestinations-ms

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\fb3b0dbfee58fac8.customDestinations-ms
        • Size 1KB
        • SHA256 b0c341b85ec277474e5ff9c7baa933c455460dd73d2ebcc11dcc3d5aa46508f5
        • MD5 SHA1 SHA512 TLSH

        UninstallSet.doc.exe

        • Path C:\Users\Admin\AppData\Roaming\PushInitialize\UninstallSet.doc.exe
        • Size 512KB
        • SHA256 8a006ad97b56c255c57e904ff88594020f9d2043bb909b1d91855bda899d1f5e
        • MD5 SHA1 SHA512 SSDEEP TLSH

        btwcwuak.exe

        • Path C:\Windows\SysWOW64\btwcwuak.exe
        • Size 512KB
        • SHA256 386fb8bfa7d3477afed24f9255fda38af100c52dfc7129546aef3f135d8dcd62
        • MD5 SHA1 SHA512 SSDEEP TLSH

        nfxorrivpvroj.exe

        • Path C:\Windows\SysWOW64\nfxorrivpvroj.exe
        • Size 512KB
        • SHA256 0cd85767a1d1f8faa7767bdd3b4a5f9deda89d1b71b6f8ef09dbb4439155c8cb
        • MD5 SHA1 SHA512 SSDEEP TLSH

        tgdezmoepv.exe

        • Path C:\Windows\SysWOW64\tgdezmoepv.exe
        • Size 512KB
        • SHA256 42a67fd76bbd25d4663ee3cebb69b66da56ae8f3e571c469601121581dea9e8e
        • MD5 SHA1 SHA512 SSDEEP TLSH

        uaycdphmtquzcvc.exe

        • Path C:\Windows\SysWOW64\uaycdphmtquzcvc.exe
        • Size 512KB
        • SHA256 405e8aff0545b41763d5be5cbd18e4b7a92e7c3c669ee5daa17b1b92b8b51bae
        • MD5 SHA1 SHA512 SSDEEP TLSH

        mydoc.rtf

        • Path C:\Windows\mydoc.rtf
        • Size 223B
        • SHA256 85f2405d1f67021a3206faa26f6887932fea71aea070df3efb2902902e2d03e2
        • MD5 SHA1 SHA512 TLSH

        MsoIrmProtector.doc.exe

        • Path \??\c:\Windows\SysWOW64\MSDRM\MsoIrmProtector.doc.exe
        • Size 512KB
        • SHA256 d7ae98c693f7ddad3051944598164813b3b88be63c44ebeebb021a695729f328
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/5840-34-0x00007FF86E260000-0x00007FF86E270000-memory.dmp

        memory/5840-36-0x00007FF86E260000-0x00007FF86E270000-memory.dmp

        memory/5840-39-0x00007FF86BBC0000-0x00007FF86BBD0000-memory.dmp

        memory/5840-38-0x00007FF86E260000-0x00007FF86E270000-memory.dmp

        memory/5840-60-0x0000020DE4B70000-0x0000020DE4D3A000-memory.dmp

        memory/5840-37-0x00007FF86E260000-0x00007FF86E270000-memory.dmp

        memory/5840-35-0x00007FF86E260000-0x00007FF86E270000-memory.dmp

        memory/5840-40-0x00007FF86BBC0000-0x00007FF86BBD0000-memory.dmp

        memory/5840-262-0x00007FF86E260000-0x00007FF86E270000-memory.dmp

        memory/5840-258-0x0000020DE4B70000-0x0000020DE4D3A000-memory.dmp

        memory/5840-265-0x00007FF86E260000-0x00007FF86E270000-memory.dmp

        memory/5840-264-0x00007FF86E260000-0x00007FF86E270000-memory.dmp

        memory/5840-266-0x0000020DE4B70000-0x0000020DE4D3A000-memory.dmp

        memory/5840-263-0x00007FF86E260000-0x00007FF86E270000-memory.dmp

        memory/5904-0-0x0000000000400000-0x0000000000496000-memory.dmp