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Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12/05/2024, 20:31

General

  • Target

    2024-05-12_ac3d2a0b077370cf590a9ec0becd81df_cryptolocker.exe

  • Size

    85KB

  • MD5

    ac3d2a0b077370cf590a9ec0becd81df

  • SHA1

    1df2b6a166fd2cf7253739d65e5bf58e6a3334e1

  • SHA256

    0052d2d7393d1fac9555f714f4f798512ef0f30c5a145accc7f8b2c7d432c423

  • SHA512

    0935175192b44ad932b47f5df82be1fb264acdd7036f6a51f5989ac03a5f73210da7c52c313f9d6045fa3076bd7ff23facbbfd7e20f6e0986fbc893a21ae4e64

  • SSDEEP

    1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2EMMrCsq:TCjsIOtEvwDpj5HE/OUHnSMO

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 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\2024-05-12_ac3d2a0b077370cf590a9ec0becd81df_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-12_ac3d2a0b077370cf590a9ec0becd81df_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2696
    • 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:2380

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    85KB

    MD5

    c4ec1e40d0da4440758674f97a101951

    SHA1

    066a4cae4f2e52686a8804c0381f3158fa9176fb

    SHA256

    9659d13be0b6935cd4bcdc17848c06fec3cf825419bc804e9363d67aeb84dfeb

    SHA512

    70dd00b4e60e580e287c45990347e74c6d89379af38ed5c642177abeed2d06edaa170bdce352d30b1f6ba70e5eb9a0a1cbd8e31d3d63eaa3564ae2c1fcd0a428

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2380-18-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/2380-20-0x00000000007D0000-0x00000000007D6000-memory.dmp

    Filesize

    24KB

  • memory/2380-48-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/2696-0-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/2696-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/2696-2-0x0000000000860000-0x0000000000866000-memory.dmp

    Filesize

    24KB

  • memory/2696-9-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/2696-17-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB