Resubmissions

06-05-2021 11:48

210506-t228k9s662 10

Analysis

  • max time kernel
    100s
  • max time network
    16s
  • platform
    windows7_x64
  • resource
    win7v20210410
  • submitted
    06-05-2021 11:48

General

  • Target

    Users/valdershof/AppData/Local/Temp/1/Temp1_request (2).zip/statistics.05.05.21.doc

  • Size

    79KB

  • MD5

    5b1f0547ccf84dcbff593f7c8f5942d8

  • SHA1

    3e5a4257f797363211724a83b40b42c84396bf47

  • SHA256

    643ead4ad454664576dd55236b4d924a91294d155315ec8860af96a6157263d4

  • SHA512

    a149e6d4bf6093b3af4fffc14824335a72cff53cea28d27a103f98a450439768ab29f0a532a512364e5b5b726fccb2bc051aaebb145b5ca05680c01c088c7ab6

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 10 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious use of SetWindowsHookEx 16 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\Users\valdershof\AppData\Local\Temp\1\Temp1_request (2).zip\statistics.05.05.21.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:2040
    • C:\Windows\SysWOW64\explorer.exe
      explorer c:\users\public\dataTrustRequest.hta
      2⤵
      • Process spawned unexpected child process
      PID:1980
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:1092
    • C:\Windows\explorer.exe
      C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
      1⤵
      • Suspicious use of WriteProcessMemory
      PID:1696
      • C:\Windows\SysWOW64\mshta.exe
        "C:\Windows\SysWOW64\mshta.exe" "C:\Users\Public\dataTrustRequest.hta"
        2⤵
        • Modifies Internet Explorer settings
        PID:1708

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Defense Evasion

    Modify Registry

    1
    T1112

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Public\dataTrustRequest.hta
      MD5

      8ec163e76fce1f25578d1c05a795b4bc

      SHA1

      08a476eeb1cd6eae7e17331bbbcd1adc44168fc3

      SHA256

      1444d45a93a63b2d305ef991e9e78b05405bfdc5e572e735d4c9a8bf9470dcb1

      SHA512

      c1c481c931dc2f4aa8a17be7dd265b82297ae6641057908581fa1fb09aa5c794335f941833e8f1cbbe0b01e18e07dd614c0a5689cd89d632cb42400799d8cb8a

    • memory/1092-68-0x0000000000000000-mapping.dmp
    • memory/1696-65-0x000007FEFC141000-0x000007FEFC143000-memory.dmp
      Filesize

      8KB

    • memory/1708-67-0x0000000000000000-mapping.dmp
    • memory/1980-62-0x0000000000000000-mapping.dmp
    • memory/1980-63-0x0000000076281000-0x0000000076283000-memory.dmp
      Filesize

      8KB

    • memory/1980-64-0x000000006B751000-0x000000006B753000-memory.dmp
      Filesize

      8KB

    • memory/2040-59-0x0000000072C41000-0x0000000072C44000-memory.dmp
      Filesize

      12KB

    • memory/2040-60-0x00000000706C1000-0x00000000706C3000-memory.dmp
      Filesize

      8KB

    • memory/2040-61-0x000000005FFF0000-0x0000000060000000-memory.dmp
      Filesize

      64KB

    • memory/2040-69-0x0000000005D30000-0x000000000697A000-memory.dmp
      Filesize

      12.3MB