Analysis

  • max time kernel
    139s
  • max time network
    124s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19/05/2024, 20:23

General

  • Target

    2024-05-19_199b2b09d76e81f0d85542b4710c787e_cryptolocker.exe

  • Size

    77KB

  • MD5

    199b2b09d76e81f0d85542b4710c787e

  • SHA1

    dfa46e19cb86d7a0836eba4b7864582f39c174f1

  • SHA256

    fbf878e6c32a0e98a3073020258890b9236a5370fc2c6db72be9e3a24def4ad7

  • SHA512

    acce186b30a7f3a6798c8f859d1177ba69f27446181dfce126072492507b00db228037514f7599c9801b927fccebf222bbdf58d125d74518c63f8f79748e3820

  • SSDEEP

    1536:ZzFbxmLPWQMOtEvwDpj386Sj/WprgJN6tZdOyJ3KUg:ZVxkGOtEvwDpjca0

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\2024-05-19_199b2b09d76e81f0d85542b4710c787e_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-19_199b2b09d76e81f0d85542b4710c787e_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:448
    • 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:3952

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          77KB

          MD5

          290fd6b78c471e00befdf85a2c6858e5

          SHA1

          8008684742d6d7300670327d8f58d558abbfe8d3

          SHA256

          f0a8f67fddfd7651db9d4f655650119df869f5b1ce8272d9fac98759b0a4330b

          SHA512

          6dd22c4e9c16dcefb7d7eb3d078e1d0ef4976b60a54ed27c547bdbd252e78f77cd8f6aa33cdcac01afaa263706edbc5e6d6d6f464081019e6b04319d5196c27a

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/448-0-0x00000000004F0000-0x00000000004F3000-memory.dmp

          Filesize

          12KB

        • memory/448-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

          Filesize

          24KB

        • memory/448-2-0x00000000006D0000-0x00000000006D6000-memory.dmp

          Filesize

          24KB

        • memory/448-9-0x00000000006B0000-0x00000000006B6000-memory.dmp

          Filesize

          24KB

        • memory/448-17-0x00000000004F0000-0x00000000004F3000-memory.dmp

          Filesize

          12KB

        • memory/3952-18-0x0000000000460000-0x00000000004A0000-memory.dmp

          Filesize

          256KB

        • memory/3952-20-0x0000000000660000-0x0000000000666000-memory.dmp

          Filesize

          24KB

        • memory/3952-26-0x00000000004E0000-0x00000000004E6000-memory.dmp

          Filesize

          24KB