Analysis

  • max time kernel
    149s
  • 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
    04/06/2024, 11:28

General

  • Target

    2024-06-04_245828f648f84f1913dea0c689dfc7f9_cryptolocker.exe

  • Size

    97KB

  • MD5

    245828f648f84f1913dea0c689dfc7f9

  • SHA1

    143058442046e673166f9d71f7a4ced15e6d8957

  • SHA256

    ec05e5fe2b1e1c9f86744b8f43d578013d63b82b399e19484338095b646922db

  • SHA512

    8677aac5dcfe6012a5dee8d8d16f122d31505c9cbc32ecb53b3bc98f7defdd6cc7e0b25d3351ac1d3c74aaf0b7cb4ea6fb477a81fb4d080f54e4dc6f10f33d57

  • SSDEEP

    768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZ7uyA36S7MpxRiWNa9mktJyqd8:xj+VGMOtEvwDpjubwQEIiVmkuqS

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\2024-06-04_245828f648f84f1913dea0c689dfc7f9_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-04_245828f648f84f1913dea0c689dfc7f9_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2020
    • 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:3228

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    97KB

    MD5

    e71d2a9b2f319d4fc84233daa8691645

    SHA1

    6578ee8f20c78092cc619ef5d7b7698cbdff52e7

    SHA256

    606c50d1cd1dad908e1dca90b9b4b41772de1aaf79e43050d7368b4dc314afaa

    SHA512

    ead28976feea1eff1a47fe9edc7a4a46597a47a850096f802feac361f38fff93134a3db733475fe3bfffb9b9b8dfe3dbb9b23571c5dfb33c8213a49617de75f8

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2020-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2020-1-0x0000000000570000-0x0000000000576000-memory.dmp

    Filesize

    24KB

  • memory/2020-2-0x00000000006D0000-0x00000000006D6000-memory.dmp

    Filesize

    24KB

  • memory/2020-9-0x0000000000570000-0x0000000000576000-memory.dmp

    Filesize

    24KB

  • memory/2020-16-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3228-19-0x0000000002070000-0x0000000002076000-memory.dmp

    Filesize

    24KB

  • memory/3228-25-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/3228-48-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB