Analysis

  • max time kernel
    143s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/04/2024, 23:39

General

  • Target

    2024-04-05_ddc0b1aef25ddb1524803ffaede3323c_cryptolocker.exe

  • Size

    40KB

  • MD5

    ddc0b1aef25ddb1524803ffaede3323c

  • SHA1

    dc84e40cf619455fbc36a5b38d228a59c4dffc67

  • SHA256

    862e05a33b80e4bc70e5afb64cf742930c2b54689d8743f5d51aadee1c8df598

  • SHA512

    e5255750b2264d6dc025c2de8b8154787155b4983c75fcf7a5f00cf7307146f64eb257cb33a6ffbcc9512bba015386c2b7a43e7f4db8485fac640ce9798f7fa5

  • SSDEEP

    768:TS5nQJ24LR7tOOtEvwDpjGqPhqlcnvhx5/xFRYzv:m5nkFNMOtEvwDpjG8hhXyzv

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\2024-04-05_ddc0b1aef25ddb1524803ffaede3323c_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-05_ddc0b1aef25ddb1524803ffaede3323c_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:5032
    • 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:3896

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          41KB

          MD5

          c52fa354401eff42f7cf0bf7de3039b3

          SHA1

          ba880d3dfcf072592e7973a0e986c6506e92dd4b

          SHA256

          26de0ba77ae07fe4ed9324d884e595493a54c45e9cfb2db093ca0eedf810728a

          SHA512

          8e4a817922c10910648db06f725a6443064622206d458f06899d421f6215d7e3e1f2dc31b1d04d5b492487555aa1a433c2029a71654810b982074f4052742be5

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/3896-17-0x0000000000500000-0x000000000050E000-memory.dmp

          Filesize

          56KB

        • memory/3896-20-0x00000000006D0000-0x00000000006D6000-memory.dmp

          Filesize

          24KB

        • memory/3896-22-0x00000000006B0000-0x00000000006B6000-memory.dmp

          Filesize

          24KB

        • memory/3896-49-0x0000000000500000-0x000000000050E000-memory.dmp

          Filesize

          56KB

        • memory/5032-0-0x0000000000500000-0x000000000050E000-memory.dmp

          Filesize

          56KB

        • memory/5032-1-0x00000000005E0000-0x00000000005E6000-memory.dmp

          Filesize

          24KB

        • memory/5032-2-0x00000000005E0000-0x00000000005E6000-memory.dmp

          Filesize

          24KB

        • memory/5032-3-0x0000000000600000-0x0000000000606000-memory.dmp

          Filesize

          24KB

        • memory/5032-18-0x0000000000500000-0x000000000050E000-memory.dmp

          Filesize

          56KB