Analysis

  • max time kernel
    120s
  • max time network
    127s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    27-02-2024 01:23

General

  • Target

    a7dc2a5a6f629576fcff7b9791ff3ee3.xlsm

  • Size

    255KB

  • MD5

    a7dc2a5a6f629576fcff7b9791ff3ee3

  • SHA1

    6d0a818934d7d5489eaa15b77d79a63fbceb158b

  • SHA256

    426946d8ed48e925bab206bab04553b9701327f683da4ef385e2c475b377b515

  • SHA512

    b26de0ebd7bb20b91f91c06420bafb1bb544c6e6ba76b4f989f8052f2387bff68be5f82f4144ff670dc3b31ec74027893aa2c9c3325ab225b57db24a39ae5385

  • SSDEEP

    6144:StNSLcq+YXEsJup/asVPNdPWokl1DqWjgdFcbHUE:CPYXEsJupCsFdeokX+/dF0HUE

Score
10/10

Malware Config

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 3 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 3 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 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\a7dc2a5a6f629576fcff7b9791ff3ee3.xlsm
    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:2320
    • C:\Windows\SysWOW64\MSHTA.exe
      MSHTA C:\ProgramData\rsXNAUle.sct
      2⤵
      • Process spawned unexpected child process
      • Blocklisted process makes network request
      • Modifies system certificate store
      PID:2632

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\ProgramData\rsXNAUle.sct

    Filesize

    25KB

    MD5

    4453758761ffec13d7397a2337afa0f7

    SHA1

    9c640be200413c634845195841bb5aacddc5ae12

    SHA256

    12787b5f4e0bc853f75509661c69abec6bf6fc5f9375b19e2dad4a77174d39a1

    SHA512

    b38cd74a2fe188b9a1fef9fbb3c525af34aae4d72367bf64c9a1e678af4775937f219c829d2e416291dca480610a1e4df498d973f1d10e73dab5c6d311b3ffc7

  • C:\Users\Admin\AppData\Local\Temp\Cab62F9.tmp

    Filesize

    65KB

    MD5

    ac05d27423a85adc1622c714f2cb6184

    SHA1

    b0fe2b1abddb97837ea0195be70ab2ff14d43198

    SHA256

    c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

    SHA512

    6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

  • C:\Users\Admin\AppData\Local\Temp\Tar632B.tmp

    Filesize

    171KB

    MD5

    9c0c641c06238516f27941aa1166d427

    SHA1

    64cd549fb8cf014fcd9312aa7a5b023847b6c977

    SHA256

    4276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f

    SHA512

    936ed0c0b0a7ff8e606b1cc4175a1f9b3699748ccbba1c3aff96203033d2e9edabf090e5148370df42fbfc4e31d7229493706ff24f19ff42ff7bef74a6baad06

  • memory/2320-0-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/2320-1-0x0000000071EBD000-0x0000000071EC8000-memory.dmp

    Filesize

    44KB

  • memory/2320-56-0x0000000071EBD000-0x0000000071EC8000-memory.dmp

    Filesize

    44KB

  • memory/2320-59-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/2320-69-0x0000000071EBD000-0x0000000071EC8000-memory.dmp

    Filesize

    44KB