Analysis

  • max time kernel
    109s
  • max time network
    124s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07/05/2024, 14:46

General

  • Target

    $PLUGINSDIR/cfcnylv.dll

  • Size

    153KB

  • MD5

    01bce109d8a462e2ae84ec617287867c

  • SHA1

    717f97fb5e21ae916ab26b08a65d66e51b0bc92c

  • SHA256

    d5f93c4eb052d9063499f0d62f794b19dcd966287e91c118117b44106a815df6

  • SHA512

    2d1946eee1cb61c60467fa34c5a4fbfeff49e509e19ddf40510fe43263cf441bd53b6adafa1a0591ad9c15af7b388b41a242168747bc39f2275313465e500a48

  • SSDEEP

    3072:G3Z3VTVBYqvus53WhuXniHp8/JKv+oG//sRVOxHQ:qZ3Rl3yHp8Mv9GRxHQ

Score
3/10

Malware Config

Signatures

  • Program crash 2 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\cfcnylv.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2296
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\cfcnylv.dll,#1
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3628
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 3628 -s 600
        3⤵
        • Program crash
        PID:2368
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 3628 -s 600
        3⤵
        • Program crash
        PID:2160
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 3628 -ip 3628
    1⤵
      PID:4728
    • 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 --mojo-platform-channel-handle=4832 --field-trial-handle=2244,i,11878111470816612087,2265290141962607370,262144 --variations-seed-version /prefetch:8
      1⤵
        PID:2020

      Network

            MITRE ATT&CK Matrix

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            Downloads