Analysis

  • max time kernel
    119s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-en-20210920
  • submitted
    21-10-2021 14:24

General

  • Target

    particulars,010.21.doc

  • Size

    34KB

  • MD5

    69641318c7507bf5547004c1681ae7f2

  • SHA1

    e3f99f178f0021cf8993a06bfb1d6d66b7210773

  • SHA256

    7b45e3906cf74bbecb8bab376e876693f54169208e786ac037fee90f1caa0e97

  • SHA512

    c52935d852cc0ae5553e44c8cf5de839ced1b4656e6757d7ef03cd5c39170a027f3d88f3da3dcca7013088f091b63d876126767af9d24cec47068eaa64984c22

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.

  • Blocklisted process makes network request 1 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Office loads VBA resources, possible macro or embedded object present
  • Modifies Internet Explorer settings 1 TTPs 32 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious use of SetWindowsHookEx 16 IoCs
  • Suspicious use of WriteProcessMemory 15 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\particulars,010.21.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:520
    • C:\Windows\SysWOW64\mshta.exe
      "C:\Windows\SysWOW64\mshta.exe" "C:\users\public\redRedLady.hta"
      2⤵
      • Process spawned unexpected child process
      • Blocklisted process makes network request
      • Modifies Internet Explorer settings
      • Suspicious use of WriteProcessMemory
      PID:584
      • C:\Windows\SysWOW64\regsvr32.exe
        "C:\Windows\System32\regsvr32.exe" c:\users\public\seaYouMy.jpg
        3⤵
          PID:920
      • C:\Windows\splwow64.exe
        C:\Windows\splwow64.exe 12288
        2⤵
          PID:360

      Network

      MITRE ATT&CK Matrix ATT&CK v6

      Defense Evasion

      Modify Registry

      1
      T1112

      Discovery

      System Information Discovery

      1
      T1082

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\users\public\redRedLady.hta
        MD5

        ff77dec83020073c100f185209d213ef

        SHA1

        9aa80c5e78633996a9e954b4cb9345ead127dd5a

        SHA256

        7798e8cc54181498adaaf2bcddc5ec9b501e52fb261b6b777a2a02bc8c5af6ee

        SHA512

        876d26209053ca4de7813b34a3fe22a2bbedb4a7dadca6c7c06e18332785f6436417166fdf0ba40385a2cbde6d9b371435f0931a10d43ce212e292d1cd3e02a4

      • \??\c:\users\public\seaYouMy.jpg
        MD5

        5285d7310b08cc1f7eff5ed1ab898972

        SHA1

        3d6f2bd6cfa847ccf5b1329d455a1e63dcbb2b8d

        SHA256

        38dac079572ca83781ce773072dbbfad2169909fd78d5678bcaeb876ab00997f

        SHA512

        d749cc3ec465e38496eb654abb53d44732802416b08398814beb164d740c454a8932c53a335f367d6ead376385a516ed25ae46c8d39641e527c401508eaac1a8

      • memory/360-61-0x0000000000000000-mapping.dmp
      • memory/360-62-0x000007FEFC051000-0x000007FEFC053000-memory.dmp
        Filesize

        8KB

      • memory/520-54-0x00000000729A1000-0x00000000729A4000-memory.dmp
        Filesize

        12KB

      • memory/520-55-0x0000000070421000-0x0000000070423000-memory.dmp
        Filesize

        8KB

      • memory/520-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
        Filesize

        64KB

      • memory/520-57-0x0000000075661000-0x0000000075663000-memory.dmp
        Filesize

        8KB

      • memory/520-67-0x000000005FFF0000-0x0000000060000000-memory.dmp
        Filesize

        64KB

      • memory/584-58-0x0000000000000000-mapping.dmp
      • memory/920-63-0x0000000000000000-mapping.dmp
      • memory/920-66-0x0000000000370000-0x0000000000371000-memory.dmp
        Filesize

        4KB