Analysis

  • max time kernel
    120s
  • max time network
    47s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    24-05-2022 20:54

General

  • Target

    2ab98ac09ef0db9eaef3b2ecc09a6ef42d6977cba89ac08781f0751572d5b16b.docm

  • Size

    638KB

  • MD5

    5b769ca4f7175d282c3f34135148bd80

  • SHA1

    7c13ba85e98e46b5a17f77ea36ccf54946913633

  • SHA256

    2ab98ac09ef0db9eaef3b2ecc09a6ef42d6977cba89ac08781f0751572d5b16b

  • SHA512

    e9144c58cc1d10f0537f21d9515dfaa59e8a39e4f6ddc299fcd67f0062d8bfd27ee2fd61c2f6fb44c08ccbd39336a1072048507fc52a6306780e7c56738f333a

Score
10/10

Malware Config

Signatures

  • Ostap JavaScript Downloader 1 IoCs

    Ostap is a JavaScript downloader that's been active since 2016. It's used to deliver several families, inluding TrickBot

  • Process spawned unexpected child process 1 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • ostap

    Ostap is a JS downloader, used to deliver other families.

  • 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 SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 12 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\2ab98ac09ef0db9eaef3b2ecc09a6ef42d6977cba89ac08781f0751572d5b16b.docm"
    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:1680
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c C:\DiskDrive\1\Volume\errorfix.bat
      2⤵
      • Process spawned unexpected child process
      • Suspicious use of WriteProcessMemory
      PID:1180
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:1836
    • C:\Windows\SysWOW64\cscript.exe
      cscript //nologo C:\DiskDrive\1\Volume\BackFiles\Ranlsojf.jse
      1⤵
        PID:336

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\DiskDrive\1\Volume\BackFiles\Ranlsojf.jse

        Filesize

        320KB

        MD5

        22cfe1295d1d8108e2b409de2e01d169

        SHA1

        acae75174b23ae88b15035410e75bad6e4060039

        SHA256

        dd7023dd82b641c9307566b87acf0951f16b27c34094a341fa1fe7671d269bf4

        SHA512

        56708d0013fe6e90d053c8caae41a41828c4272680e237bbbd72805b77805c4bb94b95dcdc33ceca2cab898a1cf8269365ecfd127516c8773c02ba568a4bb473

      • C:\DiskDrive\1\Volume\errorfix.bat

        Filesize

        63B

        MD5

        0d0732df59c6a24601ed265c3507415c

        SHA1

        9de42aced5d8c395d4f35924a5373e8434b1a681

        SHA256

        58e918466a61740abe42a2d1ca29bd8d56daf53912e6d65879cbe944466fb80c

        SHA512

        077baaf98fbfcca3d9b42644202960a7d571d5e6ef468c1a2f78f2fa49e4c7c3d129c1f93878a96b34eb706b6421aba385d90df363019d991d28cd280dfcf775

      • memory/1680-77-0x0000000004F20000-0x0000000005020000-memory.dmp

        Filesize

        1024KB

      • memory/1680-66-0x0000000004F20000-0x0000000005020000-memory.dmp

        Filesize

        1024KB

      • memory/1680-74-0x0000000004F20000-0x0000000005020000-memory.dmp

        Filesize

        1024KB

      • memory/1680-78-0x0000000004F20000-0x0000000005020000-memory.dmp

        Filesize

        1024KB

      • memory/1680-54-0x0000000072101000-0x0000000072104000-memory.dmp

        Filesize

        12KB

      • memory/1680-80-0x0000000000485000-0x0000000000489000-memory.dmp

        Filesize

        16KB

      • memory/1680-79-0x0000000000485000-0x0000000000489000-memory.dmp

        Filesize

        16KB

      • memory/1680-76-0x0000000004F20000-0x0000000005020000-memory.dmp

        Filesize

        1024KB

      • memory/1680-75-0x0000000004F20000-0x0000000005020000-memory.dmp

        Filesize

        1024KB

      • memory/1680-73-0x0000000004F20000-0x0000000005020000-memory.dmp

        Filesize

        1024KB

      • memory/1680-72-0x0000000004F20000-0x0000000005020000-memory.dmp

        Filesize

        1024KB

      • memory/1680-70-0x0000000004F20000-0x0000000005020000-memory.dmp

        Filesize

        1024KB

      • memory/1680-71-0x0000000004F20000-0x0000000005020000-memory.dmp

        Filesize

        1024KB

      • memory/1680-69-0x0000000004F20000-0x0000000005020000-memory.dmp

        Filesize

        1024KB

      • memory/1680-68-0x0000000004F20000-0x0000000005020000-memory.dmp

        Filesize

        1024KB

      • memory/1680-62-0x0000000004F20000-0x0000000005020000-memory.dmp

        Filesize

        1024KB

      • memory/1680-67-0x0000000004F20000-0x0000000005020000-memory.dmp

        Filesize

        1024KB

      • memory/1680-65-0x0000000004F20000-0x0000000005020000-memory.dmp

        Filesize

        1024KB

      • memory/1680-64-0x0000000004F20000-0x0000000005020000-memory.dmp

        Filesize

        1024KB

      • memory/1680-58-0x0000000070B6D000-0x0000000070B78000-memory.dmp

        Filesize

        44KB

      • memory/1680-57-0x00000000752B1000-0x00000000752B3000-memory.dmp

        Filesize

        8KB

      • memory/1680-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

        Filesize

        64KB

      • memory/1680-55-0x000000006FB81000-0x000000006FB83000-memory.dmp

        Filesize

        8KB

      • memory/1680-81-0x0000000000485000-0x0000000000489000-memory.dmp

        Filesize

        16KB

      • memory/1680-63-0x0000000004F20000-0x0000000005020000-memory.dmp

        Filesize

        1024KB

      • memory/1680-61-0x0000000004F20000-0x0000000005020000-memory.dmp

        Filesize

        1024KB

      • memory/1680-60-0x0000000004F20000-0x0000000005020000-memory.dmp

        Filesize

        1024KB

      • memory/1680-59-0x0000000004F20000-0x0000000005020000-memory.dmp

        Filesize

        1024KB

      • memory/1680-90-0x000000005FFF0000-0x0000000060000000-memory.dmp

        Filesize

        64KB

      • memory/1836-89-0x000007FEFB611000-0x000007FEFB613000-memory.dmp

        Filesize

        8KB