Analysis

  • max time kernel
    1716s
  • max time network
    1183s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240412-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26/04/2024, 10:17

General

  • Target

    ucrtbase.dll

  • Size

    999KB

  • MD5

    ed405a84a567c02d4113a882a6e91531

  • SHA1

    27b2706673c706dce279c1854c1a6a5e76f4cfce

  • SHA256

    2a425a71a5a5799703be8a6c17fc01c8d9136ea88ef4d6cb64ba13489d721a8a

  • SHA512

    148f85af7f80f31a95cf1ff73cc9d3b3d0fa1a930e81e2aaf6825b672a7f3b039a127b098e1b453de53f426aa0dcb3489239cbba1ebb13968b8d252c7eb7696e

  • SSDEEP

    24576:eLyubutYBWSlhrANUDk8ExrmxvSZX0ypFiR+y:SyubJvlhrVETiR+y

Score
1/10

Malware Config

Signatures

  • Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\ucrtbase.dll,#1
    1⤵
      PID:4708
    • C:\Windows\system32\rundll32.exe
      "C:\Windows\system32\rundll32.exe" "C:\Windows\SYSTEM32\EDGEHTML.dll",#141 Microsoft.VCLibs.140.00_8wekyb3d8bbwe
      1⤵
        PID:3912
      • C:\Windows\System32\svchost.exe
        C:\Windows\System32\svchost.exe -k UnistackSvcGroup
        1⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:4628

      Network

            MITRE ATT&CK Matrix

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            • memory/4628-0-0x0000021253170000-0x0000021253180000-memory.dmp

              Filesize

              64KB

            • memory/4628-16-0x0000021253270000-0x0000021253280000-memory.dmp

              Filesize

              64KB

            • memory/4628-32-0x000002125B5E0000-0x000002125B5E1000-memory.dmp

              Filesize

              4KB

            • memory/4628-34-0x000002125B610000-0x000002125B611000-memory.dmp

              Filesize

              4KB

            • memory/4628-35-0x000002125B610000-0x000002125B611000-memory.dmp

              Filesize

              4KB

            • memory/4628-36-0x000002125B720000-0x000002125B721000-memory.dmp

              Filesize

              4KB