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Analysis

  • max time kernel
    100s
  • max time network
    45s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    08/02/2023, 17:29

General

  • Target

    53D7A7E5774BC299D1D70B8764750F34FAA344344B80A7B05DB220D2E02796ED.rtf

  • Size

    84KB

  • MD5

    214a5018ca69057d61ee15f5ca7b3114

  • SHA1

    950e0046e744400d96ef7761358e85eb6c6fed17

  • SHA256

    53d7a7e5774bc299d1d70b8764750f34faa344344b80a7b05db220d2e02796ed

  • SHA512

    b66a5589a20f25c72a8ee55079e7b6af012c0a3bafd9732978109ea26201aa450edbdb914006e66e78537c1171c8ba5386c4d80f701102832072f29b228999a3

  • SSDEEP

    768:KFx0XaIsnPRIa4fwJMxXKMhxJ6mqVptc6O/n:Kf0Xvx3EMImxr+4n

Score
8/10

Malware Config

Signatures

  • Blocklisted process makes network request 2 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Drops file in Windows directory 1 IoCs
  • Office loads VBA resources, possible macro or embedded object present
  • Launches Equation Editor 1 TTPs 1 IoCs

    Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.

  • 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 8 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\53D7A7E5774BC299D1D70B8764750F34FAA344344B80A7B05DB220D2E02796ED.rtf"
    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:1412
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:824
    • C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
      "C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
      1⤵
      • Blocklisted process makes network request
      • Loads dropped DLL
      • Launches Equation Editor
      • Suspicious use of WriteProcessMemory
      PID:2036
      • C:\Users\Admin\AppData\Roaming\plugmvnhfj58619.exe
        "C:\Users\Admin\AppData\Roaming\plugmvnhfj58619.exe"
        2⤵
        • Executes dropped EXE
        PID:1064

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Roaming\plugmvnhfj58619.exe

      Filesize

      745KB

      MD5

      a2f1a93f12a307c40184377bf785e1bb

      SHA1

      0babde8d92931e2e30a6a1342b7203ae5c33c1e4

      SHA256

      c9e24511c4ad318a7856b982a580202f81827100f9bc11c3112deb4409b6e2d9

      SHA512

      1ea03c69c1f9e388c64a46f5b1d37271976dd3f29ea558d9690b0851c7bd7fe96e1c1848e8d064c801dd67de5dfcf1c4cba5bcffac86d18d10225718126973bb

    • C:\Users\Admin\AppData\Roaming\plugmvnhfj58619.exe

      Filesize

      745KB

      MD5

      a2f1a93f12a307c40184377bf785e1bb

      SHA1

      0babde8d92931e2e30a6a1342b7203ae5c33c1e4

      SHA256

      c9e24511c4ad318a7856b982a580202f81827100f9bc11c3112deb4409b6e2d9

      SHA512

      1ea03c69c1f9e388c64a46f5b1d37271976dd3f29ea558d9690b0851c7bd7fe96e1c1848e8d064c801dd67de5dfcf1c4cba5bcffac86d18d10225718126973bb

    • \Users\Admin\AppData\Roaming\plugmvnhfj58619.exe

      Filesize

      745KB

      MD5

      a2f1a93f12a307c40184377bf785e1bb

      SHA1

      0babde8d92931e2e30a6a1342b7203ae5c33c1e4

      SHA256

      c9e24511c4ad318a7856b982a580202f81827100f9bc11c3112deb4409b6e2d9

      SHA512

      1ea03c69c1f9e388c64a46f5b1d37271976dd3f29ea558d9690b0851c7bd7fe96e1c1848e8d064c801dd67de5dfcf1c4cba5bcffac86d18d10225718126973bb

    • \Users\Admin\AppData\Roaming\plugmvnhfj58619.exe

      Filesize

      745KB

      MD5

      a2f1a93f12a307c40184377bf785e1bb

      SHA1

      0babde8d92931e2e30a6a1342b7203ae5c33c1e4

      SHA256

      c9e24511c4ad318a7856b982a580202f81827100f9bc11c3112deb4409b6e2d9

      SHA512

      1ea03c69c1f9e388c64a46f5b1d37271976dd3f29ea558d9690b0851c7bd7fe96e1c1848e8d064c801dd67de5dfcf1c4cba5bcffac86d18d10225718126973bb

    • memory/824-68-0x000007FEFB6A1000-0x000007FEFB6A3000-memory.dmp

      Filesize

      8KB

    • memory/1064-65-0x0000000000B30000-0x0000000000BF0000-memory.dmp

      Filesize

      768KB

    • memory/1412-58-0x0000000070A5D000-0x0000000070A68000-memory.dmp

      Filesize

      44KB

    • memory/1412-57-0x0000000075771000-0x0000000075773000-memory.dmp

      Filesize

      8KB

    • memory/1412-54-0x0000000071FF1000-0x0000000071FF4000-memory.dmp

      Filesize

      12KB

    • memory/1412-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/1412-55-0x000000006FA71000-0x000000006FA73000-memory.dmp

      Filesize

      8KB

    • memory/1412-69-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/1412-70-0x0000000070A5D000-0x0000000070A68000-memory.dmp

      Filesize

      44KB