Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19/06/2024, 15:23

General

  • Target

    2024-06-19_0233023859dc40b6f24b6ab52b36c5ec_cryptolocker.exe

  • Size

    43KB

  • MD5

    0233023859dc40b6f24b6ab52b36c5ec

  • SHA1

    958a9767848b17afc249bb3ecfdda24f39ccb285

  • SHA256

    6ff6d9cca7877c4c2e3b385d309d155d4326a4fd5b4649af518ebf70ae6582b1

  • SHA512

    88ad062c6ca6ec03e74223581abfce3aec457db2b4fb0fb582168567263d6279b6543bde2e614d9337ea55830bcc826f683b1d862b68aa9b672086ab378640e7

  • SSDEEP

    768:TS5nQJ24LR7tOOtEvwDpjGqPhqlcnvgpnY1n9r:m5nkFNMOtEvwDpjG8hgpY19r

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 3 IoCs
  • Detects executables built or packed with MPress PE compressor 5 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\2024-06-19_0233023859dc40b6f24b6ab52b36c5ec_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-19_0233023859dc40b6f24b6ab52b36c5ec_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3280
    • 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:760

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          44KB

          MD5

          8dcd17738f20e4c7749ee7f6f58baf02

          SHA1

          16698bf49f482aa8183e97b776b2ad7839950af2

          SHA256

          1102dd5e80ed30a49ab64ca8d2acb6fd88ab495171d8144ce538d62c4625d617

          SHA512

          c380bf1db24028d7f5911ec3eae235cfba6c95ea468c8093d42a999c03c81c5e4bab83a0f6bd8dfe6d36ff7f2c3e25c2822b82ea8ace6df74ca617ff6e51a5cc

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/760-16-0x0000000000500000-0x000000000050E000-memory.dmp

          Filesize

          56KB

        • memory/760-27-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/760-21-0x00000000004F0000-0x00000000004F6000-memory.dmp

          Filesize

          24KB

        • memory/760-51-0x0000000000500000-0x000000000050E000-memory.dmp

          Filesize

          56KB

        • memory/3280-0-0x0000000000500000-0x000000000050E000-memory.dmp

          Filesize

          56KB

        • memory/3280-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

          Filesize

          24KB

        • memory/3280-2-0x00000000004E0000-0x00000000004E6000-memory.dmp

          Filesize

          24KB

        • memory/3280-3-0x0000000000510000-0x0000000000516000-memory.dmp

          Filesize

          24KB

        • memory/3280-19-0x0000000000500000-0x000000000050E000-memory.dmp

          Filesize

          56KB