Analysis

  • max time kernel
    118s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20230712-en
  • resource tags

    arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-x64system
  • submitted
    04-08-2023 20:19

General

  • Target

    factura.rtf

  • Size

    11KB

  • MD5

    05c137d8e79ce59ed6e4b7cd78e5b8a2

  • SHA1

    3a41de3774b6a17a34a8bedf1a0881a3f08d492d

  • SHA256

    5a31c77293af2920d7020d5d0236691adcea2c57c2716658ce118a5cba9d4913

  • SHA512

    46551cb4556183b6d5e4fe20e1d2f916c9e50f109f1bec69cc3abce295d1be138c0dadc69ab7a510d4e29e59656b47b1d36a486c1e68d71c776271ff1ef58aa3

  • SSDEEP

    192:TMv9/nrxOgNIVk04Pre4VqPuc+17rf14g/gjXKSDxX8VxrdPJH:Yv9/rsok+Prz1dZKXDsjtJH

Score
8/10

Malware Config

Signatures

  • Blocklisted process makes network request 1 IoCs
  • Drops file in Windows directory 1 IoCs
  • Launches Equation Editor 1 TTPs 1 IoCs

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

  • 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\factura.rtf"
    1⤵
    • Drops file in Windows directory
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2660
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:1580
    • 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
      • Launches Equation Editor
      PID:1876

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Roaming\Microsoft\Templates\Normal.dotm

      Filesize

      20KB

      MD5

      73b94f10a1b5fba72448a393c54433ed

      SHA1

      aabae88663cc14b2c4e3178cfc2ce1b8e9101fa5

      SHA256

      3d696976ac891d27b4a968b47d607962ec9162c558058ac61fa88d91772a38bc

      SHA512

      094314e2dda51eebbf3e2868a754ff9265be22f86d65bcb68581bf783bb263371b537cc1e22ef7536d803518081c6ea5ea6752a3d94451bd731bde3909894f31

    • memory/2660-53-0x000000002F570000-0x000000002F6CD000-memory.dmp

      Filesize

      1.4MB

    • memory/2660-54-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/2660-55-0x000000007147D000-0x0000000071488000-memory.dmp

      Filesize

      44KB

    • memory/2660-63-0x000000002F570000-0x000000002F6CD000-memory.dmp

      Filesize

      1.4MB

    • memory/2660-64-0x000000007147D000-0x0000000071488000-memory.dmp

      Filesize

      44KB

    • memory/2660-83-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/2660-84-0x000000007147D000-0x0000000071488000-memory.dmp

      Filesize

      44KB