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Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    15/05/2024, 07:28

General

  • Target

    2024-05-15_ac13c094c0068ea64e35fe42c289aa8f_cryptolocker.exe

  • Size

    62KB

  • MD5

    ac13c094c0068ea64e35fe42c289aa8f

  • SHA1

    e1ee0607a41ad8d34159714f21173044ff188715

  • SHA256

    6b560c3210d4d175f55f3768cf7e256fd9185ff6c595966026e33d30e8d9bb77

  • SHA512

    f3c05ed665ddb3d44f799e0e5de772e3d5c167ca3049698e0823aaf4eadacc9d804c7288ba18bfa3e9099d151946233beb4c089c591d8b33c226f3e1648bb200

  • SSDEEP

    1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2EMNuSZ:TCjsIOtEvwDpj5HE/OUHnSMZi

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 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\2024-05-15_ac13c094c0068ea64e35fe42c289aa8f_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-15_ac13c094c0068ea64e35fe42c289aa8f_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3628
    • 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:848

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    62KB

    MD5

    7fe41781f3b38d3e902d29fd56df6391

    SHA1

    7d07f7e5b8583d1e606f954ad092f658ce2ed42c

    SHA256

    671f3d266ca202b42736a33545a58d9246a2b4e0809b82d154bba9518ceb832a

    SHA512

    7e8b68603d973a286c314fdd3a612938c91ecb6d58f0ada84341cdd429e8cdfd6678fa0824146a6ec78543499da2b8cdf0f79a302111f72e1a5090fedf41afde

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/848-19-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/848-25-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/848-48-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/3628-0-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/3628-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/3628-2-0x00000000007D0000-0x00000000007D6000-memory.dmp

    Filesize

    24KB

  • memory/3628-9-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/3628-17-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB