Analysis

  • max time kernel
    124s
  • max time network
    146s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240802-en
  • resource tags

    arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    02-08-2024 19:40

General

  • Target

    Microsoft.Extensions.Options.dll

  • Size

    49KB

  • MD5

    257beb2a2e61d95541ff34c1791dfa1c

  • SHA1

    847771b132378679014e141831cff2279b15c3ed

  • SHA256

    a11544ccadbd55d297c9bba46e0d75c7dee2df1b3d937ba8c1280918413e2c37

  • SHA512

    35e503774c40f81333c4b21468fd58d5362c764d043d5539428c9b9fada5a072568f8dc2dbd46d8468edd295c8311d9a3a7a10e104080c03b38800575123adb7

  • SSDEEP

    768:htd/yZ8bAzn33QcOg1E0Oby1Ey5hvaU+yMbrIF8BOuMtzr:qz3RbO2PfyrbeVuMtzr

Score
6/10

Malware Config

Signatures

  • Enumerates connected drives 3 TTPs 48 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Modifies data under HKEY_USERS 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\Microsoft.Extensions.Options.dll,#1
    1⤵
      PID:1952
    • C:\Windows\System32\rundll32.exe
      C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
      1⤵
        PID:2984
      • C:\Windows\system32\SearchIndexer.exe
        C:\Windows\system32\SearchIndexer.exe /Embedding
        1⤵
        • Enumerates connected drives
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:4760
        • C:\Windows\System32\SearchProtocolHost.exe
          "C:\Windows\System32\SearchProtocolHost.exe" Global\UsGthrFltPipeMssGthrPipe1_ Global\UsGthrCtrlFltPipeMssGthrPipe1 1 -2147483646 "Software\Microsoft\Windows Search" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT; MS Search 4.0 Robot)" "C:\ProgramData\Microsoft\Search\Data\Temp\usgthrsvc" "DownLevelDaemon"
          2⤵
          • Modifies data under HKEY_USERS
          PID:4624
        • C:\Windows\system32\SearchFilterHost.exe
          "C:\Windows\system32\SearchFilterHost.exe" 832 2608 2596 812 {0E5DCEC5-7795-4E38-9621-94DFD9F9A421}
          2⤵
          • Modifies data under HKEY_USERS
          PID:4344
        • C:\Windows\system32\SearchFilterHost.exe
          "C:\Windows\system32\SearchFilterHost.exe" 832 2696 2672 812 {85EE815A-7738-4808-A14A-3AD87E32A3BF}
          2⤵
            PID:2004

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • memory/4344-47-0x000001E1FABA0000-0x000001E1FABB0000-memory.dmp

          Filesize

          64KB

        • memory/4344-43-0x000001E1FABA0000-0x000001E1FABB0000-memory.dmp

          Filesize

          64KB

        • memory/4344-66-0x000001E1FABA0000-0x000001E1FABB0000-memory.dmp

          Filesize

          64KB

        • memory/4344-67-0x000001E1FABA0000-0x000001E1FABB0000-memory.dmp

          Filesize

          64KB

        • memory/4344-63-0x000001E1FABA0000-0x000001E1FABB0000-memory.dmp

          Filesize

          64KB

        • memory/4344-39-0x000001E1FABA0000-0x000001E1FABB0000-memory.dmp

          Filesize

          64KB

        • memory/4344-40-0x000001E1FABA0000-0x000001E1FABB0000-memory.dmp

          Filesize

          64KB

        • memory/4344-46-0x000001E1FABA0000-0x000001E1FABB0000-memory.dmp

          Filesize

          64KB

        • memory/4344-42-0x000001E1FABA0000-0x000001E1FABB0000-memory.dmp

          Filesize

          64KB

        • memory/4344-45-0x000001E1FABA0000-0x000001E1FABB0000-memory.dmp

          Filesize

          64KB

        • memory/4344-53-0x000001E1FABA0000-0x000001E1FABB0000-memory.dmp

          Filesize

          64KB

        • memory/4344-52-0x000001E1FABA0000-0x000001E1FABB0000-memory.dmp

          Filesize

          64KB

        • memory/4344-51-0x000001E1FABA0000-0x000001E1FABB0000-memory.dmp

          Filesize

          64KB

        • memory/4344-50-0x000001E1FABA0000-0x000001E1FABB0000-memory.dmp

          Filesize

          64KB

        • memory/4344-49-0x000001E1FABA0000-0x000001E1FABB0000-memory.dmp

          Filesize

          64KB

        • memory/4344-48-0x000001E1FABA0000-0x000001E1FABB0000-memory.dmp

          Filesize

          64KB

        • memory/4344-38-0x000001E1FABA0000-0x000001E1FABB0000-memory.dmp

          Filesize

          64KB

        • memory/4344-65-0x000001E1FABA0000-0x000001E1FABB0000-memory.dmp

          Filesize

          64KB

        • memory/4344-41-0x000001E1FABA0000-0x000001E1FABB0000-memory.dmp

          Filesize

          64KB

        • memory/4344-44-0x000001E1FABA0000-0x000001E1FABB0000-memory.dmp

          Filesize

          64KB

        • memory/4344-54-0x000001E1FABA0000-0x000001E1FABB0000-memory.dmp

          Filesize

          64KB

        • memory/4344-55-0x000001E1FABA0000-0x000001E1FABB0000-memory.dmp

          Filesize

          64KB

        • memory/4344-59-0x000001E1FABA0000-0x000001E1FABB0000-memory.dmp

          Filesize

          64KB

        • memory/4344-58-0x000001E1FABA0000-0x000001E1FABB0000-memory.dmp

          Filesize

          64KB

        • memory/4344-57-0x000001E1FABA0000-0x000001E1FABB0000-memory.dmp

          Filesize

          64KB

        • memory/4344-56-0x000001E1FABA0000-0x000001E1FABB0000-memory.dmp

          Filesize

          64KB

        • memory/4344-60-0x000001E1FABA0000-0x000001E1FABB0000-memory.dmp

          Filesize

          64KB

        • memory/4344-61-0x000001E1FABA0000-0x000001E1FABB0000-memory.dmp

          Filesize

          64KB

        • memory/4344-62-0x000001E1FABA0000-0x000001E1FABB0000-memory.dmp

          Filesize

          64KB

        • memory/4344-64-0x000001E1FABA0000-0x000001E1FABB0000-memory.dmp

          Filesize

          64KB

        • memory/4760-16-0x000001DF37650000-0x000001DF37660000-memory.dmp

          Filesize

          64KB

        • memory/4760-0-0x000001DF37550000-0x000001DF37560000-memory.dmp

          Filesize

          64KB

        • memory/4760-36-0x000001DF3C3A0000-0x000001DF3C3A8000-memory.dmp

          Filesize

          32KB

        • memory/4760-32-0x000001DF3BD40000-0x000001DF3BD48000-memory.dmp

          Filesize

          32KB