Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19-05-2024 17:50

General

  • Target

    5aaa734ecd61d2a8faf15c843cd86709_JaffaCakes118.dll

  • Size

    5.0MB

  • MD5

    5aaa734ecd61d2a8faf15c843cd86709

  • SHA1

    5f796929bc7301c15c7e80b6ad232c8076c99de1

  • SHA256

    d7a72ff750c8efe9e3e5fb8fddd60c250b3cab76118ac835ea306e1e9f830412

  • SHA512

    ca720bc29b066b4c29bb48047af0b97fe7275a94ad4f41a97b102383c254211481da8c8bb23c249214732896580f7c1886da0101fe7597b598c427faaf136ea9

  • SSDEEP

    49152:SnAQqMSPbcBVQej/1INRx+TSqTdd1HkQ:+DqPoBhz1aRxcSUZk

Malware Config

Signatures

  • Wannacry

    WannaCry is a ransomware cryptoworm.

  • Contacts a large (3366) amount of remote hosts 1 TTPs

    This may indicate a network scan to discover remotely running services.

  • Executes dropped EXE 3 IoCs
  • Creates a large amount of network flows 1 TTPs

    This may indicate a network scan to discover remotely running services.

  • Drops file in Windows directory 2 IoCs
  • Modifies data under HKEY_USERS 5 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\5aaa734ecd61d2a8faf15c843cd86709_JaffaCakes118.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2224
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\5aaa734ecd61d2a8faf15c843cd86709_JaffaCakes118.dll,#1
      2⤵
      • Drops file in Windows directory
      • Suspicious use of WriteProcessMemory
      PID:3140
      • C:\WINDOWS\mssecsvc.exe
        C:\WINDOWS\mssecsvc.exe
        3⤵
        • Executes dropped EXE
        • Drops file in Windows directory
        PID:4256
        • C:\WINDOWS\tasksche.exe
          C:\WINDOWS\tasksche.exe /i
          4⤵
          • Executes dropped EXE
          PID:452
  • C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe -m security
    1⤵
    • Executes dropped EXE
    • Modifies data under HKEY_USERS
    PID:2920
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=4068,i,1809100026287847100,9768898026582633513,262144 --variations-seed-version --mojo-platform-channel-handle=4072 /prefetch:8
    1⤵
      PID:1020

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Windows\mssecsvc.exe

      Filesize

      3.6MB

      MD5

      cabd09bbf6e65a38851007c1fa84b3c0

      SHA1

      6a0f1aff1e9ca5c8cceb6e385b96f2fcafd2a1f7

      SHA256

      6e5334295a211e1ba5639c7688747397ea3dc63789dbd41c800b6daa5fc021d5

      SHA512

      aa85a0886debbccc28251b9c900e14ead86cf94ed9e83405a5d3c207e4ec001cf66e511baf652c86e3c8570364988e925f70f35c938dda5702bc94ac8c05572c

    • C:\Windows\tasksche.exe

      Filesize

      3.4MB

      MD5

      e7777114d041dc7bb21c7dbe47d25b08

      SHA1

      0f849ab7d459137d33f6bdd001333bd7f2e255a1

      SHA256

      9f891d4df21a14f582ef00570c3f358daafd44c1b72c30e24c3ec87ad89c9472

      SHA512

      320b4442bda23bd96bd844d5de71a36cd21ab77cfcee9006a3f2905dffa3ca29f968a239f777b1df057bd8ac563db75e5aefd55ca8ff0c080b2780c2d34bad5f