Analysis

  • max time kernel
    149s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18/03/2024, 12:45

General

  • Target

    2024-03-18_ad3a5c4dc76f90148182a97950a5ced6_cryptolocker.exe

  • Size

    123KB

  • MD5

    ad3a5c4dc76f90148182a97950a5ced6

  • SHA1

    e0047e62e75fa0b949e13bd58f049688c24e23e5

  • SHA256

    18d8c6c9186603aaa63619ea01d5289649ceff3ce2732aa9f2e5ac9fdba782f8

  • SHA512

    4b1a54d41eda93cc3cf33b8d96a5528e78a4e075b79694dc6130ce9bf655bd01f2ad48b126918ed120b12f213b7eba92192c465e9978b8cf97a51dc62db40b3e

  • SSDEEP

    1536:gUj+AIMOtEvwDpjNbwQEIPlemUhYwkkxE4Mqbad:vCA9OtEvwDpjP

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\2024-03-18_ad3a5c4dc76f90148182a97950a5ced6_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-18_ad3a5c4dc76f90148182a97950a5ced6_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1436
    • 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:4580

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          124KB

          MD5

          cae3792f4489f4913da0f9c38ec5ecfb

          SHA1

          50dfd394e90b5182097cde8d4a486cb87bff231a

          SHA256

          f956daf5edc61cb4b51fcb2dbbe41ed65cfa5bfb26c2b7943b2070a4e9c9ff2d

          SHA512

          4c3165b6d6355ba75261b632ad362cafd33d0fc6c806d5a85282f32d6170b5957282d49d00af75d1dc8033672841bd91b7959e0a52d5888660ada791ead6c164

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/1436-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

          Filesize

          24KB

        • memory/1436-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

          Filesize

          24KB

        • memory/1436-2-0x00000000007D0000-0x00000000007D6000-memory.dmp

          Filesize

          24KB

        • memory/4580-17-0x0000000000750000-0x0000000000756000-memory.dmp

          Filesize

          24KB

        • memory/4580-22-0x0000000000660000-0x0000000000666000-memory.dmp

          Filesize

          24KB