Analysis

  • max time kernel
    118s
  • max time network
    133s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    17-01-2023 18:26

General

  • Target

    80893_payslip.docx

  • Size

    10KB

  • MD5

    28d506098937d7ddaf58805011f8d45d

  • SHA1

    24229cc8d80884084c1addb04c65681c9233dad0

  • SHA256

    4b67a9ddf9fc9d3df0b158bdae523144c329080a0e949a71584b7339b204e5c5

  • SHA512

    cf5e2af854adec3a6657e2fac63aefaa8484a30fbe78e074760bc54a00aec4046724fad6b8c03ab87e2675e6476130138582b64c722e5737d97946653c46e5ef

  • SSDEEP

    192:ScIMmtP8ar5G/bfIdTOpULnamWBX8ex6y3PWFl:SPXt4ATOqLnosM+D

Score
7/10

Malware Config

Signatures

  • Abuses OpenXML format to download file from external location 2 IoCs
  • Drops file in Windows directory 1 IoCs
  • Office loads VBA resources, possible macro or embedded object present
  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 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\80893_payslip.docx"
    1⤵
    • Abuses OpenXML format to download file from external location
    • Drops file in Windows directory
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1304
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:616

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Defense Evasion

    Modify Registry

    1
    T1112

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/616-60-0x0000000000000000-mapping.dmp
    • memory/616-61-0x000007FEFB741000-0x000007FEFB743000-memory.dmp
      Filesize

      8KB

    • memory/1304-54-0x0000000072231000-0x0000000072234000-memory.dmp
      Filesize

      12KB

    • memory/1304-55-0x000000006FCB1000-0x000000006FCB3000-memory.dmp
      Filesize

      8KB

    • memory/1304-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
      Filesize

      64KB

    • memory/1304-57-0x0000000075831000-0x0000000075833000-memory.dmp
      Filesize

      8KB

    • memory/1304-58-0x0000000070C9D000-0x0000000070CA8000-memory.dmp
      Filesize

      44KB

    • memory/1304-59-0x0000000070C9D000-0x0000000070CA8000-memory.dmp
      Filesize

      44KB

    • memory/1304-62-0x000000005FFF0000-0x0000000060000000-memory.dmp
      Filesize

      64KB

    • memory/1304-63-0x0000000070C9D000-0x0000000070CA8000-memory.dmp
      Filesize

      44KB