Analysis

  • max time kernel
    142s
  • max time network
    124s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10/05/2024, 07:43

General

  • Target

    2024-05-10_9aa132bb018e7e7d449384bff3ed3891_cryptolocker.exe

  • Size

    48KB

  • MD5

    9aa132bb018e7e7d449384bff3ed3891

  • SHA1

    5da55fedaddee9f3c892fc006458a843a1419213

  • SHA256

    8ea8889de43e780e567a9baf24663997cd6f29e723fc8f1ef034c04403db09ad

  • SHA512

    278c44435b7876b727e1468cd2b6c1406eac8e6d0315aa870a088b1a745a60835c4c548f762347a190ffd0093fa77024e9e2818342f6efd59db5b8b7bebba229

  • SSDEEP

    768:xQz7yVEhs9+4uR1bytOOtEvwDpjWE6BLbjG9RzhwaRh7ihx:xj+VGMOtEvwDpjy+TRh7in

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 4 IoCs
  • Detects executables built or packed with MPress PE compressor 4 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\2024-05-10_9aa132bb018e7e7d449384bff3ed3891_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-10_9aa132bb018e7e7d449384bff3ed3891_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4916
    • 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:552

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          48KB

          MD5

          716a584a290444411be9dc17ef49f3fd

          SHA1

          0725429f2227b48f5d3e1efe0de92a4d3271cc1b

          SHA256

          142770ad71bc95e22d6bff4f87e7e2d501c18bc55792ec2292b9011fd34815d1

          SHA512

          cdc8175434607aee55551133809fc14c4d3c19e8046c5894f096a86e54e777eb08d7cebe8b6557423a38aacde2363f676bb7dc7cfb185c7a954b9eeb18a68d5b

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/552-25-0x00000000007B0000-0x00000000007B6000-memory.dmp

          Filesize

          24KB

        • memory/552-19-0x00000000006C0000-0x00000000006C6000-memory.dmp

          Filesize

          24KB

        • memory/552-48-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/4916-0-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/4916-1-0x00000000005B0000-0x00000000005B6000-memory.dmp

          Filesize

          24KB

        • memory/4916-2-0x0000000001F70000-0x0000000001F76000-memory.dmp

          Filesize

          24KB

        • memory/4916-9-0x00000000005B0000-0x00000000005B6000-memory.dmp

          Filesize

          24KB

        • memory/4916-17-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB