Analysis

  • max time kernel
    120s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    25-01-2024 17:37

General

  • Target

    2024-01-25_cce764b74e3f188e39e761096c1f7077_cryptolocker.exe

  • Size

    31KB

  • MD5

    cce764b74e3f188e39e761096c1f7077

  • SHA1

    7398613dd9f784df796fed4829a8ed409779d9dc

  • SHA256

    b87f9b1c76c29c034b798b890ee2852111e08f0960cc0a640b3603cd646547a3

  • SHA512

    97f91a4e7beafada60ccb32121a361f5be73bb0aad4982b68b9f7d6b468d81809eb350e4751124c9056eddcc763d7a640cd18c3c82597ac647a1b619919a554f

  • SSDEEP

    384:bAvMaNGh4z7CG3POOvbRSLoF/F0QU5XYFnufc/zzo6cuM98h:bAvJCYOOvbRPDEgXRcuM98h

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\2024-01-25_cce764b74e3f188e39e761096c1f7077_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-25_cce764b74e3f188e39e761096c1f7077_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:2348
    • 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:2864

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

    8a5a3d1318f23b6faae4048f9e0a758e

    SHA1

    ea034e5ba67b56f5679388b97f8091ffe928c9b3

    SHA256

    b8c4bab8250eb1f41916e5b7c7f2bef819fca38641d135aae298948c5194dbda

    SHA512

    7803d4941b9ed39936b7af163785038568a4580e200356a8fd1d0a957deed6acb76b74e9ac9781425d04b859027b092ed196a25ab069824a37c6b0eb2dc3acaf

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

    Filesize

    242B

    MD5

    948bca96d97ab0403f5f82dcfc87802e

    SHA1

    2f3e8e8a8e101191ba2ee3d96120ca2ecd85ff40

    SHA256

    2882e3fa610417504506da85686868d58167c7d1c7163e7569c4731792fdbbb9

    SHA512

    af0e279ea0818f49bca96975a0794c2040cbcb8188b205326485fdf6e80463da67b6c1cea5b0696c2ba01cfbd9b7a9c22a16297cb639285b6fb9004258bbf5d0

  • C:\Users\Admin\AppData\Local\Temp\Tar6D9.tmp

    Filesize

    171KB

    MD5

    9c0c641c06238516f27941aa1166d427

    SHA1

    64cd549fb8cf014fcd9312aa7a5b023847b6c977

    SHA256

    4276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f

    SHA512

    936ed0c0b0a7ff8e606b1cc4175a1f9b3699748ccbba1c3aff96203033d2e9edabf090e5148370df42fbfc4e31d7229493706ff24f19ff42ff7bef74a6baad06

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

    Filesize

    31KB

    MD5

    bcf43ee97ca0ee1fca4c6f9a35faa6a2

    SHA1

    bd5fc8c2df620fc6f0b527550cee1ecb894e003e

    SHA256

    6c195153e8c32e85300d9208e56624a7a834989244a8b9160d2e5dd35b9f92bd

    SHA512

    4072f5292ac3f24c66254e1b97006b87e3ec89c6e74c529dc815d6bb43a19f69dda4686c2d78ff828c073ba0a80aa31c9ad8ebc00ce12bed32039b74e654135c

  • memory/2348-0-0x0000000000380000-0x0000000000386000-memory.dmp

    Filesize

    24KB

  • memory/2348-1-0x0000000000400000-0x0000000000406000-memory.dmp

    Filesize

    24KB

  • memory/2348-8-0x0000000000380000-0x0000000000386000-memory.dmp

    Filesize

    24KB

  • memory/2864-17-0x00000000003C0000-0x00000000003C6000-memory.dmp

    Filesize

    24KB