Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12/01/2024, 00:07

General

  • Target
    54f371ccb2b34ba3ec55b894a034e4e9.exe
  • Size 512KB
  • Sample240112-aejdrabafm
  • SHA256 b9b99d8d97a035b23694cc17da290651e2fb267a40f2ecd221505db392c654e0
  • MD5 SHA1 SHA512 SSDEEP

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
  • 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 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 17 IoCs

    AutoIT scripts compiled to PE executables.

  • Drops file in System32 directory 13 IoCs
  • Drops file in Program Files directory 14 IoCs
  • Drops file in Windows directory 19 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • 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 7 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\54f371ccb2b34ba3ec55b894a034e4e9.exe
    "C:\Users\Admin\AppData\Local\Temp\54f371ccb2b34ba3ec55b894a034e4e9.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:4460
    • C:\Windows\SysWOW64\nnlcvsbohp.exe
      nnlcvsbohp.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:4312
      • C:\Windows\SysWOW64\ajwrcgpy.exe
        C:\Windows\system32\ajwrcgpy.exe
        3⤵
        • Executes dropped EXE
        • Enumerates connected drives
        • Drops file in System32 directory
        • Drops file in Program Files directory
        • Drops file in Windows directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:2392
    • C:\Windows\SysWOW64\ajwrcgpy.exe
      ajwrcgpy.exe
      2⤵
      • Executes dropped EXE
      • Enumerates connected drives
      • Drops file in System32 directory
      • Drops file in Program Files directory
      • Drops file in Windows directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:224
    • C:\Windows\SysWOW64\kyirzzleslywkzy.exe
      kyirzzleslywkzy.exe
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:2252
    • C:\Windows\SysWOW64\uvrqqjgrfxufh.exe
      uvrqqjgrfxufh.exe
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:4996
    • 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:3004

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        PROTTPLN.DOC.exe

        • Path C:\Program Files\Microsoft Office\root\Office16\1033\PROTTPLN.DOC.exe
        • Size 131KB
        • SHA256 3f92c5481d8b26cddc46052943985d029078c86792f6aa2e21c490553a814a41
        • MD5 SHA1 SHA512 SSDEEP

        PROTTPLV.DOC.exe

        • Path C:\Program Files\Microsoft Office\root\Office16\1033\PROTTPLV.DOC.exe
        • Size 158KB
        • SHA256 c8cee2436c29fbf753ed9e708236cb44803a0fa45a418aa37a3192b74ea7425c
        • MD5 SHA1 SHA512 SSDEEP

        index.dat

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Office\Recent\index.dat
        • Size 239B
        • SHA256 9def83813762ad0c5f6fdd68707d43b7ccd26633b2123254272180d76bc3faaf
        • MD5 SHA1 SHA512

        fb3b0dbfee58fac8.customDestinations-ms

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\fb3b0dbfee58fac8.customDestinations-ms
        • Size 3KB
        • SHA256 064272f5da1dfe468d00ee8fbf106aebb798789465746fd89ba25adc20be2b9c
        • MD5 SHA1 SHA512

        fb3b0dbfee58fac8.customDestinations-ms

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\fb3b0dbfee58fac8.customDestinations-ms
        • Size 3KB
        • SHA256 8d6b30ef545f4afe57866e8edc3867131836686e30b2994597748e991353ed9f
        • MD5 SHA1 SHA512

        ajwrcgpy.exe

        • Path C:\Windows\SysWOW64\ajwrcgpy.exe
        • Size 206KB
        • SHA256 78ce09949bcf9b104674e62228651ede91e01f4fa966938ee8f9b76df22c8669
        • MD5 SHA1 SHA512 SSDEEP

        ajwrcgpy.exe

        • Path C:\Windows\SysWOW64\ajwrcgpy.exe
        • Size 225KB
        • SHA256 3acc511a392a38e1051bb33d1464f55a92e0b6b191bd11db3eb77cb13f8e6d30
        • MD5 SHA1 SHA512 SSDEEP

        ajwrcgpy.exe

        • Path C:\Windows\SysWOW64\ajwrcgpy.exe
        • Size 106KB
        • SHA256 9d5d20f81ec1bf21b66484fc4b4ed6af48c0de31bf677251b3bd6363e35cb02d
        • MD5 SHA1 SHA512 SSDEEP

        kyirzzleslywkzy.exe

        • Path C:\Windows\SysWOW64\kyirzzleslywkzy.exe
        • Size 257KB
        • SHA256 5ba65eb1b25a156b9463ac67bdfe6ca92715a855728bf91d5a6831abcdfd36b6
        • MD5 SHA1 SHA512 SSDEEP

        kyirzzleslywkzy.exe

        • Path C:\Windows\SysWOW64\kyirzzleslywkzy.exe
        • Size 275KB
        • SHA256 61eb0f5a516e04e4dc8f427e2a57099e9fa1f45227a9beadd191bf2f0b87341f
        • MD5 SHA1 SHA512 SSDEEP

        kyirzzleslywkzy.exe

        • Path C:\Windows\SysWOW64\kyirzzleslywkzy.exe
        • Size 512KB
        • SHA256 5dace984cc6d6bfbb686ba2afa862279906b74a58b707661ff1c92f61c4a5a7b
        • MD5 SHA1 SHA512 SSDEEP

        nnlcvsbohp.exe

        • Path C:\Windows\SysWOW64\nnlcvsbohp.exe
        • Size 281KB
        • SHA256 224abed41072bec4d41e82c44a4467e2de5bf3637b30ba5592f98795958ea9b7
        • MD5 SHA1 SHA512 SSDEEP

        nnlcvsbohp.exe

        • Path C:\Windows\SysWOW64\nnlcvsbohp.exe
        • Size 230KB
        • SHA256 c6ba43be1c7fe72864db94c5ad88f5b73a1af42d55d1f6d3a617a3dd494658d5
        • MD5 SHA1 SHA512 SSDEEP

        uvrqqjgrfxufh.exe

        • Path C:\Windows\SysWOW64\uvrqqjgrfxufh.exe
        • Size 172KB
        • SHA256 104a5ae68989e59d75afb492d8a15b833b90654b012f0ec58422cf4023718e34
        • MD5 SHA1 SHA512 SSDEEP

        uvrqqjgrfxufh.exe

        • Path C:\Windows\SysWOW64\uvrqqjgrfxufh.exe
        • Size 221KB
        • SHA256 e7b5cab78688c88a33a62ad3f0c26bea33c855df112b0ee701fbcb6be4d5dac2
        • MD5 SHA1 SHA512 SSDEEP

        mydoc.rtf

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

        PROTTPLN.DOC.exe

        • Path \??\c:\Program Files\Microsoft Office\root\Office16\1033\PROTTPLN.DOC.exe
        • Size 111KB
        • SHA256 8282bcedf50f62d21cbf5f54af6ab7a80b81649d69e3d49150b949c44cfd2966
        • MD5 SHA1 SHA512 SSDEEP

        MsoIrmProtector.doc.exe

        • Path \??\c:\Windows\SysWOW64\MSDRM\MsoIrmProtector.doc.exe
        • Size 75KB
        • SHA256 6c01684dd0e3df94bbbe1d2851bf17031d449b98ce49e28951ba174d6ca84678
        • MD5 SHA1 SHA512 SSDEEP

        MsoIrmProtector.doc.exe

        • Path \??\c:\Windows\SysWOW64\MSDRM\MsoIrmProtector.doc.exe
        • Size 21KB
        • SHA256 77b0fa88c6cc604190a62c68a22b253a0e441b1a3faf824ce661a8c081456d44
        • MD5 SHA1 SHA512 SSDEEP

        MsoIrmProtector.doc.exe

        • Path \??\c:\Windows\SysWOW64\MSDRM\MsoIrmProtector.doc.exe
        • Size 148KB
        • SHA256 90419565b2e18178ba29f4051455250442ba29538a27d301ecc6df0730607bc4
        • MD5 SHA1 SHA512 SSDEEP

        memory/3004-38-0x00007FF90F770000-0x00007FF90F780000-memory.dmp

        memory/3004-47-0x00007FF94F6F0000-0x00007FF94F8E5000-memory.dmp

        memory/3004-57-0x00007FF90CE10000-0x00007FF90CE20000-memory.dmp

        memory/3004-56-0x00007FF94F6F0000-0x00007FF94F8E5000-memory.dmp

        memory/3004-54-0x00007FF94F6F0000-0x00007FF94F8E5000-memory.dmp

        memory/3004-52-0x00007FF94F6F0000-0x00007FF94F8E5000-memory.dmp

        memory/3004-51-0x00007FF90CE10000-0x00007FF90CE20000-memory.dmp

        memory/3004-48-0x00007FF94F6F0000-0x00007FF94F8E5000-memory.dmp

        memory/3004-46-0x00007FF94F6F0000-0x00007FF94F8E5000-memory.dmp

        memory/3004-45-0x00007FF94F6F0000-0x00007FF94F8E5000-memory.dmp

        memory/3004-42-0x00007FF90F770000-0x00007FF90F780000-memory.dmp

        memory/3004-40-0x00007FF90F770000-0x00007FF90F780000-memory.dmp

        memory/3004-53-0x00007FF94F6F0000-0x00007FF94F8E5000-memory.dmp

        memory/3004-50-0x00007FF94F6F0000-0x00007FF94F8E5000-memory.dmp

        memory/3004-49-0x00007FF94F6F0000-0x00007FF94F8E5000-memory.dmp

        memory/3004-55-0x00007FF94F6F0000-0x00007FF94F8E5000-memory.dmp

        memory/3004-44-0x00007FF90F770000-0x00007FF90F780000-memory.dmp

        memory/3004-43-0x00007FF94F6F0000-0x00007FF94F8E5000-memory.dmp

        memory/3004-41-0x00007FF94F6F0000-0x00007FF94F8E5000-memory.dmp

        memory/3004-39-0x00007FF94F6F0000-0x00007FF94F8E5000-memory.dmp

        memory/3004-138-0x00007FF94F6F0000-0x00007FF94F8E5000-memory.dmp

        memory/3004-37-0x00007FF90F770000-0x00007FF90F780000-memory.dmp

        memory/3004-110-0x00007FF94F6F0000-0x00007FF94F8E5000-memory.dmp

        memory/3004-132-0x00007FF90F770000-0x00007FF90F780000-memory.dmp

        memory/3004-133-0x00007FF90F770000-0x00007FF90F780000-memory.dmp

        memory/3004-134-0x00007FF90F770000-0x00007FF90F780000-memory.dmp

        memory/3004-135-0x00007FF94F6F0000-0x00007FF94F8E5000-memory.dmp

        memory/3004-137-0x00007FF94F6F0000-0x00007FF94F8E5000-memory.dmp

        memory/3004-136-0x00007FF90F770000-0x00007FF90F780000-memory.dmp

        memory/3004-139-0x00007FF94F6F0000-0x00007FF94F8E5000-memory.dmp

        memory/4460-0-0x0000000000400000-0x0000000000496000-memory.dmp