Analysis

  • max time kernel
    118s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    01/01/2024, 19:44

General

  • Target

    03bd9d1615e155c57f9a0dedad00df20.xlsb

  • Size

    171KB

  • MD5

    03bd9d1615e155c57f9a0dedad00df20

  • SHA1

    1de2eba7e87da57fe5e1c9c4e042c13018d6aa2b

  • SHA256

    ef6544f318b62ad4c219ca2ebe185772c69c3991bdb82e5a508adcebf12675cb

  • SHA512

    279e71f5d58cf314687d0f3081dada866526e8184cbda829e37fd52c22121f05a4e306e2475b8d4a21c51f7f0ef5c41690bffaa53d9460b5178cb25adddddea2

  • SSDEEP

    3072:oUcIhO3Sfwua25bk2wFaBRXAC/kfpdcvz+OVQaw4+rJDEU/H7DcYtEeG/X:oghmS9RdkRaXl/kxdcvzQFHr5/bDc8G

Score
10/10

Malware Config

Signatures

  • Process spawned unexpected child process 2 IoCs

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

  • Blocklisted process makes network request 7 IoCs
  • Enumerates system info in registry 2 TTPs 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • Modifies system certificate store 2 TTPs 5 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 40 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\03bd9d1615e155c57f9a0dedad00df20.xlsb
    1⤵
    • Enumerates system info in registry
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:624
    • C:\Windows\SysWOW64\Wbem\wmic.exe
      wmic process call create 'mshta C:\ProgramData\nJZZPkbzN.sct'
      2⤵
      • Process spawned unexpected child process
      • Suspicious use of AdjustPrivilegeToken
      PID:2728
  • C:\Windows\system32\mshta.exe
    mshta C:\ProgramData\nJZZPkbzN.sct
    1⤵
    • Process spawned unexpected child process
    • Blocklisted process makes network request
    • Modifies system certificate store
    PID:2644

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\Temp\Cab4AC8.tmp

          Filesize

          65KB

          MD5

          ac05d27423a85adc1622c714f2cb6184

          SHA1

          b0fe2b1abddb97837ea0195be70ab2ff14d43198

          SHA256

          c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

          SHA512

          6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

        • C:\Users\Admin\AppData\Local\Temp\Tar4B77.tmp

          Filesize

          171KB

          MD5

          9c0c641c06238516f27941aa1166d427

          SHA1

          64cd549fb8cf014fcd9312aa7a5b023847b6c977

          SHA256

          4276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f

          SHA512

          936ed0c0b0a7ff8e606b1cc4175a1f9b3699748ccbba1c3aff96203033d2e9edabf090e5148370df42fbfc4e31d7229493706ff24f19ff42ff7bef74a6baad06

        • memory/624-0-0x000000005FFF0000-0x0000000060000000-memory.dmp

          Filesize

          64KB

        • memory/624-1-0x0000000071DED000-0x0000000071DF8000-memory.dmp

          Filesize

          44KB

        • memory/624-59-0x0000000071DED000-0x0000000071DF8000-memory.dmp

          Filesize

          44KB

        • memory/624-67-0x0000000071DED000-0x0000000071DF8000-memory.dmp

          Filesize

          44KB

        • memory/624-66-0x000000005FFF0000-0x0000000060000000-memory.dmp

          Filesize

          64KB