Analysis

  • max time kernel
    134s
  • max time network
    130s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17/05/2024, 08:59

General

  • Target

    2024-05-17_5bd2505e7c82c97d638a528fc55067b6_cryptolocker.exe

  • Size

    40KB

  • MD5

    5bd2505e7c82c97d638a528fc55067b6

  • SHA1

    eec9bf9c27a1f38a965f67b1871e31540d53f529

  • SHA256

    64df8c615cef59c82b8fa498f26f5df35d0f89f1e45f1b7d368995e4191b9746

  • SHA512

    bbbe460ca639a9b6422847c73649f229ee7715a82326b164afce097824c0c454e09e12bafcb79af9b0d0d6d324a2c25ab097a980ea617b15d8c554fc62d29241

  • SSDEEP

    768:UEEmoQDj/xnMp+yptndwe/PWQtOOtEvwDpjLeJAsKuDb1:ZzFbxmLPWQMOtEvwDpjLeJAsKcb1

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 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\2024-05-17_5bd2505e7c82c97d638a528fc55067b6_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-17_5bd2505e7c82c97d638a528fc55067b6_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4596
    • 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:2824

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          40KB

          MD5

          6d041f896b2faf7031259a8ef355423b

          SHA1

          65f7b2c54a501de26cb4bb477897f476f82b5188

          SHA256

          f365c4ae955443b132f56bf8275ff6f8c261ce564b34d06590717ba838a6c6e6

          SHA512

          4171286e0f36d0719d7e169c18c65207323067d31e68bd13017e477071e7dc61310517b26759c9e791ca452b59eaee3dd873076c9ec99eb2966de52fad5fce48

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/2824-18-0x00000000006E0000-0x00000000006E6000-memory.dmp

          Filesize

          24KB

        • memory/2824-25-0x00000000004E0000-0x00000000004E6000-memory.dmp

          Filesize

          24KB

        • memory/4596-0-0x00000000004E0000-0x00000000004E3000-memory.dmp

          Filesize

          12KB

        • memory/4596-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

          Filesize

          24KB

        • memory/4596-2-0x00000000007D0000-0x00000000007D6000-memory.dmp

          Filesize

          24KB

        • memory/4596-9-0x00000000006A0000-0x00000000006A6000-memory.dmp

          Filesize

          24KB

        • memory/4596-24-0x00000000004E0000-0x00000000004E3000-memory.dmp

          Filesize

          12KB