Analysis

  • max time kernel
    93s
  • max time network
    123s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09/06/2024, 07:35

General

  • Target

    2024-06-09_e8e0c14356532aefcbafa8591dd7a7c9_cryptolocker.exe

  • Size

    86KB

  • MD5

    e8e0c14356532aefcbafa8591dd7a7c9

  • SHA1

    5f1449bd054e2ad909530ab81b6163d123c9a895

  • SHA256

    91724b76ac46c6b5f52d19544664db811060f7e53395eb759af37e8005afdbc4

  • SHA512

    f85998b156ffbaf3d69062f8d7cce3152282f900aa267fbc6acfceef5878f5f20ca08382b0d2c89c5317997f6dc62e4923eba7959066433657300e42648b441f

  • SSDEEP

    1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2EMMrC+MW:TCjsIOtEvwDpj5HE/OUHnSMN

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\2024-06-09_e8e0c14356532aefcbafa8591dd7a7c9_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-09_e8e0c14356532aefcbafa8591dd7a7c9_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4056
    • 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:432

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    86KB

    MD5

    59c6ee787846715bb2ed4cdaf0c101d5

    SHA1

    6728c08f146d22c21f6628f7a78b848b7426ecf6

    SHA256

    ff8b5e5724e933a131d0785aeea6dbd78255bdf3025ab79664db54c8987351b2

    SHA512

    1f6c41adf5dda5853d3276b4c9e7ead95c8d75c4ed36766a71806960c4142413c517872c775d344e44b7d5108a2e69439b426cd31beacf67e64a2a367e0d5937

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/432-26-0x00000000007B0000-0x00000000007B6000-memory.dmp

    Filesize

    24KB

  • memory/432-20-0x00000000007D0000-0x00000000007D6000-memory.dmp

    Filesize

    24KB

  • memory/432-18-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/432-49-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/4056-0-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/4056-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/4056-2-0x00000000020F0000-0x00000000020F6000-memory.dmp

    Filesize

    24KB

  • memory/4056-9-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/4056-17-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB