Analysis

  • max time kernel
    125s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20230831-en
  • resource tags

    arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
  • submitted
    13-09-2023 02:26

General

  • Target

    Cover Letter from CORP Tax - VTAF.doc

  • Size

    223KB

  • MD5

    eead8bbf1327c651495104a15ff9808f

  • SHA1

    9a37a16d0e9e9ebd530bdbe4c7eef72cf72f269f

  • SHA256

    c1f22d0fb64e3d6eab09258d3bba9abf34c9118bfd74f60679f6d19fd39e4620

  • SHA512

    a7431f30dc8f87f2268006529f2f9398d047dd20597e5491e080502032f463cd3737090292240fd2184cf0809465b9249a0339d4aeb6de1cc77e00886a38b82b

  • SSDEEP

    1536:ebIj7Lnorav89AVo3r2NVrmt94TTS9Wkkra+a9NXQpVU8ZCJ:kiWa09Jb2rI94SMkkrPVU8

Score
4/10

Malware Config

Signatures

  • Drops file in Windows directory 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\Cover Letter from CORP Tax - VTAF.doc"
    1⤵
    • Drops file in Windows directory
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2992
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:2956

    Network

    MITRE ATT&CK Matrix ATT&CK v13

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Roaming\Microsoft\UProof\ExcludeDictionaryEN0409.lex
      Filesize

      2B

      MD5

      f3b25701fe362ec84616a93a45ce9998

      SHA1

      d62636d8caec13f04e28442a0a6fa1afeb024bbb

      SHA256

      b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

      SHA512

      98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

    • memory/2992-0-0x000000002FA40000-0x000000002FB9D000-memory.dmp
      Filesize

      1.4MB

    • memory/2992-1-0x000000005FFF0000-0x0000000060000000-memory.dmp
      Filesize

      64KB

    • memory/2992-2-0x000000007162D000-0x0000000071638000-memory.dmp
      Filesize

      44KB

    • memory/2992-3-0x000000002FA40000-0x000000002FB9D000-memory.dmp
      Filesize

      1.4MB

    • memory/2992-12-0x000000007162D000-0x0000000071638000-memory.dmp
      Filesize

      44KB