Analysis

  • max time kernel
    119s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14/02/2024, 06:41

General

  • Target

    2024-02-14_512b647d2871657509c658b712dae7b8_cryptolocker.exe

  • Size

    38KB

  • MD5

    512b647d2871657509c658b712dae7b8

  • SHA1

    75c4502865b61ce6dc57c7966cd7bb370531825d

  • SHA256

    86265510ffef75ab6a091370378e51b2c508479a568e03bb96dc425b8f4f474d

  • SHA512

    4143d7bb05983c7690d432e841fbdfc3d2616e28ff39425ec28e4d568529817526215e03801b436457254b83c62d13dc1386198b5c8b31aaf00bb96aca6d40b4

  • SSDEEP

    768:UEEmoQDj/xnMp+yptndwe/PWQtOOtEvwDpjLeneYVy6:ZzFbxmLPWQMOtEvwDpjLeJVy6

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 5 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-02-14_512b647d2871657509c658b712dae7b8_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-14_512b647d2871657509c658b712dae7b8_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4612
    • 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:3868

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          38KB

          MD5

          312b7077ba11368828ab3bab2940734e

          SHA1

          e067293dfa78d6a679f0613f36ad86704dd57329

          SHA256

          27c9d6ad3d24d02339944a3e04e99a39f3e6bcae440377ea8362d84469a221ef

          SHA512

          6a0b828e1acc1ccd6e0e93b1fb69da9a1662c15ab1a7d3490cd0a27ce75488b0172d068164ba76b3e5e815213d93abc862a09c5050164c41cdebb2a0bfdb1672

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/3868-19-0x0000000002070000-0x0000000002076000-memory.dmp

          Filesize

          24KB

        • memory/3868-25-0x00000000021E0000-0x00000000021E6000-memory.dmp

          Filesize

          24KB

        • memory/4612-0-0x00000000004A0000-0x00000000004A3000-memory.dmp

          Filesize

          12KB

        • memory/4612-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/4612-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/4612-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

          Filesize

          24KB

        • memory/4612-17-0x00000000004A0000-0x00000000004A3000-memory.dmp

          Filesize

          12KB