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Analysis

  • max time kernel
    117s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    01/02/2024, 23:31

General

  • Target

    2024-02-01_ae2b9ace0ac16f0c19beb779c41c0d54_cryptolocker.exe

  • Size

    39KB

  • MD5

    ae2b9ace0ac16f0c19beb779c41c0d54

  • SHA1

    f4c2fc92b289205e8c56f464e346935ff80f11cd

  • SHA256

    4ed7e001055083f42011d5f4244ebd406af5ee22d7f8837dd4ac4e5e00586bb3

  • SHA512

    a1ceab8f277e2a59e0c9748e5e343941d9f178006a76337f97256a98a2fb2775a65cb10f1cfc21b13511c97eca8b1de2aab219d2327f95cb9dee503c90448720

  • SSDEEP

    384:bAvMaNGh4z7CG3POOvbRSLoF/F0QU5XYFnufc/zzoiM8Nekdvjl9V50i3NbZM+ih:bAvJCYOOvbRPDEgXrNekd7l94i3p+F

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Modifies system certificate store 2 TTPs 6 IoCs
  • Suspicious use of UnmapMainImage 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-02-01_ae2b9ace0ac16f0c19beb779c41c0d54_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-01_ae2b9ace0ac16f0c19beb779c41c0d54_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:1924
    • C:\Users\Admin\AppData\Local\Temp\demka.exe
      "C:\Users\Admin\AppData\Local\Temp\demka.exe"
      2⤵
      • Executes dropped EXE
      • Modifies system certificate store
      • Suspicious use of UnmapMainImage
      PID:1764

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

    Filesize

    65KB

    MD5

    ac05d27423a85adc1622c714f2cb6184

    SHA1

    b0fe2b1abddb97837ea0195be70ab2ff14d43198

    SHA256

    c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

    SHA512

    6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\F0ACCF77CDCBFF39F6191887F6D2D357

    Filesize

    1KB

    MD5

    a266bb7dcc38a562631361bbf61dd11b

    SHA1

    3b1efd3a66ea28b16697394703a72ca340a05bd5

    SHA256

    df545bf919a2439c36983b54cdfc903dfa4f37d3996d8d84b4c31eec6f3c163e

    SHA512

    0da8ef4f8f6ed3d16d2bc8eb816b9e6e1345dfe2d91160196c47e6149a1d6aedaafadcefd66acdea7f72dcf0832770192ceac15b0c559c4ccc2c0e5581d5aefc

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

    Filesize

    344B

    MD5

    878afb60b50cc7eeb596e7049943678f

    SHA1

    97e365fcbdcf27fc5348980fc3b3712eeb3f3ebe

    SHA256

    53627bc50f2953b28b384711977da0e5e76fd07eae7b5a3332d2266c1cd83f78

    SHA512

    0b184ae8e28491bfb50f2295b7ab2bcdab146feb1e2e29cd6f318d8d8bb5e1ef1e73b80dd4661992fb15b6d5c20d709e89549d881f349699cded2f800dd86732

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\F0ACCF77CDCBFF39F6191887F6D2D357

    Filesize

    242B

    MD5

    03bdfef60926d8ec4f564b7fa3ae8f42

    SHA1

    63594e9fdb020808f5da0f860b9f87a963ba0bfa

    SHA256

    0ca91681970754d92365ab54283a027ccffe81da1691d0c939107273a2d0f773

    SHA512

    44f7d23f76dde630460cfb6b169c7b0a2b74d9ee9acfd058c8c506e3d9970fb40ed05950a95b6002c52e1a679c8ff37bd34ba2215e6ff611172b5bfe430a7c3b

  • C:\Users\Admin\AppData\Local\Temp\Tar1116.tmp

    Filesize

    171KB

    MD5

    9c0c641c06238516f27941aa1166d427

    SHA1

    64cd549fb8cf014fcd9312aa7a5b023847b6c977

    SHA256

    4276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f

    SHA512

    936ed0c0b0a7ff8e606b1cc4175a1f9b3699748ccbba1c3aff96203033d2e9edabf090e5148370df42fbfc4e31d7229493706ff24f19ff42ff7bef74a6baad06

  • \Users\Admin\AppData\Local\Temp\demka.exe

    Filesize

    39KB

    MD5

    ee0c0f1c9fcce70973eb07a7148cf264

    SHA1

    b1e937d1ecafa14e0e29dfcc138efbadfaf7e956

    SHA256

    a54c6efc18fdc46c2574d6819b9081553f14e3629fbf4e6602023037896a4bda

    SHA512

    c71484af7868561d11cb5e2a03d13032ad2be6e602cdd44378a0ac9fb8b40a0a387c3ec7fad73068db51ca2ad0dc655ea9f7a22659187b6a6c47de7447c7f4ed

  • memory/1764-17-0x0000000000280000-0x0000000000286000-memory.dmp

    Filesize

    24KB

  • memory/1924-0-0x0000000000290000-0x0000000000296000-memory.dmp

    Filesize

    24KB

  • memory/1924-1-0x0000000000400000-0x0000000000406000-memory.dmp

    Filesize

    24KB

  • memory/1924-8-0x0000000000290000-0x0000000000296000-memory.dmp

    Filesize

    24KB