Analysis

  • max time kernel
    187s
  • max time network
    125s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    04/12/2022, 11:30

General

  • Target

    841b8f154c80837977d6eaa8d4c4e863044db9e6027cf648cddb416f0ffc5387.exe

  • Size

    80KB

  • MD5

    2327f3cacd26bc8017767636d5a4ebf0

  • SHA1

    8ce410c1a892b5fec5034cf6a2ad0c0287690510

  • SHA256

    841b8f154c80837977d6eaa8d4c4e863044db9e6027cf648cddb416f0ffc5387

  • SHA512

    947eee53f77bb9b9015c00041b3927eab70f119707ccea2bd1b8d45df74f011faa48bc44fc1de5040262948636a9a5cb7d51d8172070ef021c808a37994de0a7

  • SSDEEP

    1536:e33O+wbaj58bavMJgcPWpZTs7OeyDig2mhIXtL4xkpKAv7F9zUlEu7toelfpmX:oVymEJhP6ts7byiAhULn5vh9YlEu7tb0

Score
10/10

Malware Config

Signatures

  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 IoCs
  • Adds Run key to start application 2 TTPs 29 IoCs
  • Maps connected drives based on registry 3 TTPs 4 IoCs

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

  • Drops autorun.inf file 1 TTPs 1 IoCs

    Malware can abuse Windows Autorun to spread further via attached volumes.

  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 24 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\841b8f154c80837977d6eaa8d4c4e863044db9e6027cf648cddb416f0ffc5387.exe
    "C:\Users\Admin\AppData\Local\Temp\841b8f154c80837977d6eaa8d4c4e863044db9e6027cf648cddb416f0ffc5387.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:948
    • C:\Users\Admin\AppData\Local\Temp\841b8f154c80837977d6eaa8d4c4e863044db9e6027cf648cddb416f0ffc5387.exe
      71
      2⤵
      • Modifies visiblity of hidden/system files in Explorer
      • Loads dropped DLL
      • Adds Run key to start application
      • Maps connected drives based on registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:768
      • C:\Users\Admin\xaohao.exe
        "C:\Users\Admin\xaohao.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:1484
        • C:\Users\Admin\xaohao.exe
          71
          4⤵
          • Modifies visiblity of hidden/system files in Explorer
          • Executes dropped EXE
          • Adds Run key to start application
          • Maps connected drives based on registry
          • Drops autorun.inf file
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of SetWindowsHookEx
          PID:892

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        • C:\Users\Admin\xaohao.exe

          Filesize

          80KB

          MD5

          2327f3cacd26bc8017767636d5a4ebf0

          SHA1

          8ce410c1a892b5fec5034cf6a2ad0c0287690510

          SHA256

          841b8f154c80837977d6eaa8d4c4e863044db9e6027cf648cddb416f0ffc5387

          SHA512

          947eee53f77bb9b9015c00041b3927eab70f119707ccea2bd1b8d45df74f011faa48bc44fc1de5040262948636a9a5cb7d51d8172070ef021c808a37994de0a7

        • C:\Users\Admin\xaohao.exe

          Filesize

          80KB

          MD5

          2327f3cacd26bc8017767636d5a4ebf0

          SHA1

          8ce410c1a892b5fec5034cf6a2ad0c0287690510

          SHA256

          841b8f154c80837977d6eaa8d4c4e863044db9e6027cf648cddb416f0ffc5387

          SHA512

          947eee53f77bb9b9015c00041b3927eab70f119707ccea2bd1b8d45df74f011faa48bc44fc1de5040262948636a9a5cb7d51d8172070ef021c808a37994de0a7

        • C:\Users\Admin\xaohao.exe

          Filesize

          80KB

          MD5

          2327f3cacd26bc8017767636d5a4ebf0

          SHA1

          8ce410c1a892b5fec5034cf6a2ad0c0287690510

          SHA256

          841b8f154c80837977d6eaa8d4c4e863044db9e6027cf648cddb416f0ffc5387

          SHA512

          947eee53f77bb9b9015c00041b3927eab70f119707ccea2bd1b8d45df74f011faa48bc44fc1de5040262948636a9a5cb7d51d8172070ef021c808a37994de0a7

        • \Users\Admin\xaohao.exe

          Filesize

          80KB

          MD5

          2327f3cacd26bc8017767636d5a4ebf0

          SHA1

          8ce410c1a892b5fec5034cf6a2ad0c0287690510

          SHA256

          841b8f154c80837977d6eaa8d4c4e863044db9e6027cf648cddb416f0ffc5387

          SHA512

          947eee53f77bb9b9015c00041b3927eab70f119707ccea2bd1b8d45df74f011faa48bc44fc1de5040262948636a9a5cb7d51d8172070ef021c808a37994de0a7

        • \Users\Admin\xaohao.exe

          Filesize

          80KB

          MD5

          2327f3cacd26bc8017767636d5a4ebf0

          SHA1

          8ce410c1a892b5fec5034cf6a2ad0c0287690510

          SHA256

          841b8f154c80837977d6eaa8d4c4e863044db9e6027cf648cddb416f0ffc5387

          SHA512

          947eee53f77bb9b9015c00041b3927eab70f119707ccea2bd1b8d45df74f011faa48bc44fc1de5040262948636a9a5cb7d51d8172070ef021c808a37994de0a7

        • memory/768-62-0x0000000000400000-0x0000000000413000-memory.dmp

          Filesize

          76KB

        • memory/768-63-0x00000000761E1000-0x00000000761E3000-memory.dmp

          Filesize

          8KB

        • memory/768-56-0x0000000000400000-0x0000000000413000-memory.dmp

          Filesize

          76KB

        • memory/768-59-0x0000000000400000-0x0000000000413000-memory.dmp

          Filesize

          76KB

        • memory/768-80-0x0000000000400000-0x0000000000413000-memory.dmp

          Filesize

          76KB

        • memory/892-78-0x0000000000400000-0x0000000000413000-memory.dmp

          Filesize

          76KB

        • memory/892-81-0x0000000000400000-0x0000000000413000-memory.dmp

          Filesize

          76KB