Analysis

  • max time kernel
    147s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    04/04/2024, 20:33

General

  • Target

    2024-04-04_9775a363c84e02b55a8ad9a84a4c7dd9_cryptolocker.exe

  • Size

    89KB

  • MD5

    9775a363c84e02b55a8ad9a84a4c7dd9

  • SHA1

    d7eaba5102396f3b1e1bd5b848d5600cfd80fc58

  • SHA256

    68e1cf7fde5907d6a514789e004848b98a20de4b24d95baa87cb716da079aca0

  • SHA512

    ccef79020d3d4d97f44b83b5c1202c62b65c05b71feedec851cecd6778abc27a91fd0e2471de31f9a524a55f814609a62748c700b0be7077a8fab711272d275f

  • SSDEEP

    1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwMgS87:AnBdOOtEvwDpj6zf

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • UPX dump on OEP (original entry point) 5 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • UPX packed file 5 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-04-04_9775a363c84e02b55a8ad9a84a4c7dd9_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-04_9775a363c84e02b55a8ad9a84a4c7dd9_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1676
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2596

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • \Users\Admin\AppData\Local\Temp\asih.exe

          Filesize

          89KB

          MD5

          40f27789e60ccd89f34531720db61380

          SHA1

          d12109274813fe3abd764a359f52c89e5eae686b

          SHA256

          b18cf539c59e996631cbb1be1d3f216ac46dcaa72230c68a193d389e60f8a4ca

          SHA512

          aa7b5312e46e1d78d48ffb06fc5e86fc67dbd8e0e0d23ac933eeee8bdba6b7a70bc80b03f9b3fef74c00181627427551e4bcea793215937a199072178cec5d45

        • memory/1676-1-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/1676-0-0x0000000000240000-0x0000000000246000-memory.dmp

          Filesize

          24KB

        • memory/1676-2-0x0000000000300000-0x0000000000306000-memory.dmp

          Filesize

          24KB

        • memory/1676-9-0x0000000000240000-0x0000000000246000-memory.dmp

          Filesize

          24KB

        • memory/1676-14-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/2596-16-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/2596-18-0x0000000000310000-0x0000000000316000-memory.dmp

          Filesize

          24KB

        • memory/2596-20-0x00000000002C0000-0x00000000002C6000-memory.dmp

          Filesize

          24KB

        • memory/2596-26-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB