Analysis

  • max time kernel
    62s
  • max time network
    13s
  • platform
    windows7_x64
  • resource
    win7v20210410
  • submitted
    04-05-2021 15:01

General

  • Target

    718ace8dedfa4d43286f7749d11096f65e18fd48581c7e274d96fd958eb3ffda.doc

  • Size

    75KB

  • MD5

    b946e5876bfe78898077a1af8f623ef7

  • SHA1

    8c7e0eed137eaa082dfe0d8b3f7429cc10e35da2

  • SHA256

    718ace8dedfa4d43286f7749d11096f65e18fd48581c7e274d96fd958eb3ffda

  • SHA512

    8596a28d549d6fe6997aebdd73b7afdf63a67a15dd8d3ff27b4e7ed439f61d3afd92f718f782466be00b140bd4849f963fb3adc086cefa3dd35afbaed4968e07

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.

  • Drops file in Windows directory 1 IoCs
  • Office loads VBA resources, possible macro or embedded object present
  • Modifies Internet Explorer settings 1 TTPs 9 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious use of SetWindowsHookEx 18 IoCs
  • Suspicious use of WriteProcessMemory 11 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\718ace8dedfa4d43286f7749d11096f65e18fd48581c7e274d96fd958eb3ffda.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:1072
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:1304
    • C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
      "C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /Automation -Embedding
      1⤵
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1960
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32 c:\programdata\pasteBorder.jpg,PluginInit
        2⤵
        • Process spawned unexpected child process
        PID:1704

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Defense Evasion

    Modify Registry

    1
    T1112

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Roaming\Microsoft\Office\MSO1033.acl
      MD5

      0c4ea9ab6bc6198f73dfc34cb0cb47c6

      SHA1

      72a5599d12887d0097c702eb2f7407b66435f68f

      SHA256

      30d2f11fb84b2e94e538077250ffe71e6742decf7eb5e9e971f0b1d55529d0a1

      SHA512

      4978559a179064127eb1f64e9b19786740b7864c0364fb825d790a66ea8c11d3450295570b44208b4713967a1efbe16d6e5fefd15430318a987a6b26511a3ecb

    • \??\c:\programdata\pasteBorder.jpg
      MD5

      459e62519cbe8a2ff22c46d8f4ad8626

      SHA1

      7d50be0558089a9757657ef9225fb9d933f265e9

      SHA256

      2e1272bc5af3a5f5928b4b7647d621a96fe9365dbfd0f4db84097a1ccdf041cd

      SHA512

      2d64d2286b1b596b04a9b5f06859a7da98a458b2275db556d79e1b137185d0c26ba04d650f47e9f9fb706d35ff0c2f2a8c6eeaaae6cff43e57fbd104d46b4fa8

    • memory/1072-60-0x0000000072661000-0x0000000072664000-memory.dmp
      Filesize

      12KB

    • memory/1072-61-0x00000000700E1000-0x00000000700E3000-memory.dmp
      Filesize

      8KB

    • memory/1072-62-0x000000005FFF0000-0x0000000060000000-memory.dmp
      Filesize

      64KB

    • memory/1072-67-0x0000000005D30000-0x000000000697A000-memory.dmp
      Filesize

      12.3MB

    • memory/1304-72-0x0000000000000000-mapping.dmp
    • memory/1304-73-0x000007FEFBAB1000-0x000007FEFBAB3000-memory.dmp
      Filesize

      8KB

    • memory/1704-68-0x0000000000000000-mapping.dmp
    • memory/1704-69-0x0000000075411000-0x0000000075413000-memory.dmp
      Filesize

      8KB

    • memory/1960-71-0x000000005FFF0000-0x0000000060000000-memory.dmp
      Filesize

      64KB