Analysis

  • max time kernel
    149s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20240215-en
  • resource tags

    arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
  • submitted
    10/03/2024, 19:06

General

  • Target

    05635d87b6f8c3e859b0ee1b11e068f05de9450b69e87c87c4afe85b856e6401.exe

  • Size

    255KB

  • MD5

    5c417b8f21acc43187319b53a9cdc1cd

  • SHA1

    374d4efb9279f3495bf75afdb740923b9b69cc56

  • SHA256

    05635d87b6f8c3e859b0ee1b11e068f05de9450b69e87c87c4afe85b856e6401

  • SHA512

    79fbfbe64e9b2903b0cbb5c04e36f9137296af88f5de9aa11fd95402ec456aa81ae8740f5352dd2cf00394e38456e82ad2bcfa0978707e929970ac1847300ca8

  • SSDEEP

    3072:MMDb50WrZa8jCgae5+VQkGdUQFDxePZ2SBaQJXkNRtXlNGKaUIQW/qlQBG3mmTJF: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
  • UPX dump on OEP (original entry point) 62 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 62 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 56 IoCs

    AutoIT scripts compiled to PE executables.

  • Drops file in System32 directory 9 IoCs
  • Drops file in Program Files directory 14 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\05635d87b6f8c3e859b0ee1b11e068f05de9450b69e87c87c4afe85b856e6401.exe
    "C:\Users\Admin\AppData\Local\Temp\05635d87b6f8c3e859b0ee1b11e068f05de9450b69e87c87c4afe85b856e6401.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:1724
    • C:\Windows\SysWOW64\flxsqkemhc.exe
      flxsqkemhc.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:2504
      • C:\Windows\SysWOW64\vnzyuded.exe
        C:\Windows\system32\vnzyuded.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:2404
    • C:\Windows\SysWOW64\eslwzfhdrkccnnx.exe
      eslwzfhdrkccnnx.exe
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:2580
    • C:\Windows\SysWOW64\vnzyuded.exe
      vnzyuded.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:2508
    • C:\Windows\SysWOW64\bzmsgkqvvwlql.exe
      bzmsgkqvvwlql.exe
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:2360
    • 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:2372
      • C:\Windows\splwow64.exe
        C:\Windows\splwow64.exe 12288
        3⤵
          PID:2248

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

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

            Filesize

            20KB

            MD5

            1abe6fc6ed67059ddd6e1b6083f520d3

            SHA1

            1add0525cdd3b07318c113f1cf9d44869b9e69ff

            SHA256

            fd6d96954c4672b921c82be67c1d3f9cce85dda3737487f17cb24068833d4156

            SHA512

            af2d8e20e9c4e82635cce04798bb942f2508f2bcac2f18790f6e02db2d1897b493f158ba4641d0966ab691d0d4a33edbe42430d6e2374618b4bbf86f7b4ad4ed

          • C:\Windows\SysWOW64\bzmsgkqvvwlql.exe

            Filesize

            255KB

            MD5

            b3f931c9fbdc178d8721bad1ea147012

            SHA1

            6d8e624d2527af87568249fdd60dfad972b00c1c

            SHA256

            b23fa32e35b3554469d2d1fb076e9d3339858bf55720ae7cae0bf3df79f982a1

            SHA512

            9bd52cae24c32443b0fdb8fb7d0663d3660b3933dfc19047e448ab472a42a336807909ac42c9a158836b811ca0ced0dcfd29ff822477e895d8aff10386dc1284

          • C:\Windows\SysWOW64\eslwzfhdrkccnnx.exe

            Filesize

            255KB

            MD5

            66c6c6251f906239363955bde08d5a6a

            SHA1

            1066121bd8e0a3997c794fa7d0dd5b86bdc0b53b

            SHA256

            433f8aefe0652fa5cd673bb7d86f694d5f362d8bf6a6c807e7cea63340ff9cc2

            SHA512

            746bb547a5dc10579a030a741f320ebfdbb6ca7c6c6175d5337dd2de9b59532fddf2e9dffc8a642c75969a9392feba550de73ccaf5cf2774bfe8a007f665b224

          • C:\Windows\mydoc.rtf

            Filesize

            223B

            MD5

            06604e5941c126e2e7be02c5cd9f62ec

            SHA1

            4eb9fdf8ff4e1e539236002bd363b82c8f8930e1

            SHA256

            85f2405d1f67021a3206faa26f6887932fea71aea070df3efb2902902e2d03e2

            SHA512

            803f5f2fddbf29fef34de184eb35c2311b7a694740983ca10b54ef252dd26cda4987458d2569f441c6dedc3478bea12b45bfd3566f1b256504a0869ad3829df7

          • \Windows\SysWOW64\flxsqkemhc.exe

            Filesize

            255KB

            MD5

            47f5e2a84f0905ad095738ce786815f4

            SHA1

            720989b570e48a4a4e9a2dfaad5023d226a7c02e

            SHA256

            eb008524ddc5555b4565a84fa5b36428df79598f5984559b7a88529a8bfb986b

            SHA512

            4f4020560bf8d1d30c87bd2cf4cd7207b9cec44edd6d5543399f15c8736790ef3b31dd4eb995ae4ed46de44a37c168575bcf60189c99c72e9477ebccd5f7999f

          • \Windows\SysWOW64\vnzyuded.exe

            Filesize

            255KB

            MD5

            0da014a8ba2b18af696c59470d115eaa

            SHA1

            e208a751b16349d18218dbf6ca1a50db370cd731

            SHA256

            dc4641eec8e32feb92f979be5683659d389f2bdefe08363a68d63173865300e0

            SHA512

            c12ecc594987ffd62f9f96a519825e5bc4d73b6111e77b6c5e211c480584d8e4b875a8dd9488f0835263af0c2bb30d9b9c0db62e93a96663cffbd0327e7aae10

          • memory/1724-46-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/1724-19-0x0000000003660000-0x0000000003700000-memory.dmp

            Filesize

            640KB

          • memory/1724-27-0x0000000003660000-0x0000000003700000-memory.dmp

            Filesize

            640KB

          • memory/1724-0-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/2360-136-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/2360-101-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/2360-111-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/2360-108-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/2360-87-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/2360-145-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/2360-142-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/2360-139-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/2360-98-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/2360-79-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/2360-105-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/2360-148-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/2360-82-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/2360-95-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/2360-42-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/2360-114-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/2372-91-0x000000007150D000-0x0000000071518000-memory.dmp

            Filesize

            44KB

          • memory/2372-133-0x000000005FFF0000-0x0000000060000000-memory.dmp

            Filesize

            64KB

          • memory/2372-49-0x000000007150D000-0x0000000071518000-memory.dmp

            Filesize

            44KB

          • memory/2372-48-0x000000005FFF0000-0x0000000060000000-memory.dmp

            Filesize

            64KB

          • memory/2372-47-0x000000002F5F1000-0x000000002F5F2000-memory.dmp

            Filesize

            4KB

          • memory/2404-83-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/2404-90-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/2404-88-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/2404-45-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/2404-81-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/2504-112-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/2504-140-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/2504-99-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/2504-146-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/2504-96-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/2504-103-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/2504-143-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/2504-76-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/2504-106-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/2504-137-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/2504-93-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/2504-109-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/2504-134-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/2504-80-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/2504-84-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/2508-78-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/2508-40-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/2508-86-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/2508-89-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/2580-110-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/2580-141-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/2580-77-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/2580-107-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/2580-113-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/2580-138-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/2580-97-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/2580-135-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/2580-104-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/2580-94-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/2580-144-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/2580-85-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/2580-100-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/2580-147-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/2580-38-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB