Analysis

  • max time kernel
    133s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240419-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07/05/2024, 06:37

General

  • Target

    840f3a90967edae5af243a9786d52ea0_NEAS.exe

  • Size

    196KB

  • MD5

    840f3a90967edae5af243a9786d52ea0

  • SHA1

    23a1d1fb708b63d8576fbe45c3f9900b56f47125

  • SHA256

    d4fb2e5b7f988b7db1d86bad83da846ebce7e923d94a30cb8e6649ce9e4cd5e2

  • SHA512

    a152f44555aeb8d1be11d244ae21938443d6750725d13f5d9e4f364de7a1a1246f73804d5270abcb81ad5b3fb8033a546df036fcd2f52051ca07f94d28b8bded

  • SSDEEP

    3072:a74MyJjjlLzVjN50BdQqlYgp72xzbuawaGO0OJw8KWs6IgVLE7QkfIA:awj30dlZ+GVaRVLE7QkfI

Malware Config

Signatures

  • Blocklisted process makes network request 7 IoCs
  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 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 5 IoCs

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates connected drives 3 TTPs 23 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

  • Drops file in Program Files directory 2 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\840f3a90967edae5af243a9786d52ea0_NEAS.exe
    "C:\Users\Admin\AppData\Local\Temp\840f3a90967edae5af243a9786d52ea0_NEAS.exe"
    1⤵
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1424
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\vbpkk.exe "C:\Users\Admin\AppData\Local\Temp\840f3a90967edae5af243a9786d52ea0_NEAS.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3772
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1 -n 2
        3⤵
        • Runs ping.exe
        PID:4480
      • C:\Users\Admin\AppData\Local\Temp\vbpkk.exe
        C:\Users\Admin\AppData\Local\Temp\\vbpkk.exe "C:\Users\Admin\AppData\Local\Temp\840f3a90967edae5af243a9786d52ea0_NEAS.exe"
        3⤵
        • Deletes itself
        • Executes dropped EXE
        • Drops file in Program Files directory
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:4468
        • \??\c:\windows\SysWOW64\rundll32.exe
          c:\windows\system32\rundll32.exe "c:\Program Files\mkfmp\lzast.dll",method C:\Users\Admin\AppData\Local\Temp\vbpkk.exe
          4⤵
          • Blocklisted process makes network request
          • Loads dropped DLL
          • Adds Run key to start application
          • Enumerates connected drives
          • Writes to the Master Boot Record (MBR)
          • Checks processor information in registry
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2296

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\Temp\vbpkk.exe

          Filesize

          196KB

          MD5

          9874475a6f116ddd2d2e1143f65070e3

          SHA1

          7a34d2ebe72c79a43c26e2a5f1ce3c7d96f28e3e

          SHA256

          cbc79febb583c5f7684e902cbde5587a4517c3adf37a6ca2c9d12b41cc31b9be

          SHA512

          b8a38c93b6634eca32cefe4c5f039bfca3123a08480ca9adad913dcbe64c0ff054e45f6eb87132d220aa2bae8de35ecc56d385d379a8deefeb98934718c27813

        • \??\c:\Program Files\mkfmp\lzast.dll

          Filesize

          148KB

          MD5

          3ea3dc7955100908e1423bbeb89b761b

          SHA1

          400896ff76285ec7e0586aa07f534d8d08366177

          SHA256

          1e81ecb7d2132a7785e076a0d55509c6ea5ac229c1cc8f8c137d997eeff15b16

          SHA512

          75677aedf283e1f9dd7850ea28aeb45634977b6c4dad59fe263ff2fea8efe6694bfdde60f98803af4ab48203691812f4710f114f65b8ae4fb9c73ca1373dc483

        • memory/1424-0-0x0000000000400000-0x000000000044A000-memory.dmp

          Filesize

          296KB

        • memory/1424-2-0x0000000000400000-0x000000000044A000-memory.dmp

          Filesize

          296KB

        • memory/2296-12-0x0000000010000000-0x0000000010056000-memory.dmp

          Filesize

          344KB

        • memory/2296-15-0x0000000010050000-0x0000000010051000-memory.dmp

          Filesize

          4KB

        • memory/2296-14-0x0000000010000000-0x0000000010056000-memory.dmp

          Filesize

          344KB

        • memory/2296-16-0x0000000010000000-0x0000000010056000-memory.dmp

          Filesize

          344KB

        • memory/4468-6-0x0000000000400000-0x000000000044A000-memory.dmp

          Filesize

          296KB

        • memory/4468-9-0x0000000000400000-0x000000000044A000-memory.dmp

          Filesize

          296KB