Analysis

  • max time kernel
    134s
  • max time network
    124s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/06/2024, 03:53

General

  • Target

    2024-06-02_bec7deb04a74832098faa8e0a1e5dc0a_cryptolocker.exe

  • Size

    49KB

  • MD5

    bec7deb04a74832098faa8e0a1e5dc0a

  • SHA1

    f9a326dad816d7fc322e45301e44c27b71aa4104

  • SHA256

    7591f0330bac460bb7e5aaefb5f396cd8f95875151b6464003100fd638bbd963

  • SHA512

    1f15f89e8555c975c3fc009c41db93c43aca04163cf1f6ffc8ca84b4cde62c7cdf13de1706b90a63b8919d6bad15298597320e71fda627934bbc877ad5ec8ba7

  • SSDEEP

    768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4/Uth8igNrr42A7n0FmB0nI:vj+jsMQMOtEvwDpj5HczerLO04Bz

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 1 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies system certificate store 2 TTPs 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-06-02_bec7deb04a74832098faa8e0a1e5dc0a_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-02_bec7deb04a74832098faa8e0a1e5dc0a_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4912
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Modifies system certificate store
      PID:3076

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\Temp\misid.exe

          Filesize

          49KB

          MD5

          f5c74667dcc8874fba09f1460f230dea

          SHA1

          d5d3d09231ecb5d559c2dd4ca9178b86b9962756

          SHA256

          d6abf5aefa8671512e829ecdd0fc8eff181ba669290a4ff0c8a3694038e25c4d

          SHA512

          2152c66d3fc2573c905e11f64a53261f006f6c556a1ca9c26468d81c86feb7c8a4950468e062e91a0abfeb57391f9e9bd6a77796a5e86d1c527670dd6832f24a

        • C:\Users\Admin\AppData\Local\Temp\misids.exe

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/3076-17-0x0000000002100000-0x0000000002106000-memory.dmp

          Filesize

          24KB

        • memory/3076-23-0x00000000004E0000-0x00000000004E6000-memory.dmp

          Filesize

          24KB

        • memory/4912-0-0x0000000000670000-0x0000000000676000-memory.dmp

          Filesize

          24KB

        • memory/4912-1-0x0000000002070000-0x0000000002076000-memory.dmp

          Filesize

          24KB

        • memory/4912-8-0x0000000000670000-0x0000000000676000-memory.dmp

          Filesize

          24KB