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Analysis

  • max time kernel
    94s
  • 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
    25/06/2024, 21:42

General

  • Target

    2024-06-25_06e839127eaf0fbb71463ed953c3ad9d_cryptolocker.exe

  • Size

    62KB

  • MD5

    06e839127eaf0fbb71463ed953c3ad9d

  • SHA1

    65fa0fb386a0bd80ec38d2f03eb42a5e78a92638

  • SHA256

    2076cf9ebe9180c1d7c42ba618a78d3c86218332957b852224963fcf77261d22

  • SHA512

    0b005baa645a4ff1d1a65762106cc129dc60b499a45d0769c613ee93253bca84a9f0608b2fb307f940e91525abd30d1e2db2ea78833a3acb03443a76fb048d2c

  • SSDEEP

    1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2EMNuSA:TCjsIOtEvwDpj5HE/OUHnSMZv

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\2024-06-25_06e839127eaf0fbb71463ed953c3ad9d_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-25_06e839127eaf0fbb71463ed953c3ad9d_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3352
    • 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:1020

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    62KB

    MD5

    5d6a9e7f93de04815df1f53b97690da1

    SHA1

    49129cfa8e5a8abc9e0ea701e547fd572a7fde59

    SHA256

    581d0acc71e4f60dcd8a342256c461990d88c9704babcf9a05e3c891a736d9c1

    SHA512

    f2b52058de670d1f3a3a740c154a06fb9700b21dc8051713f3937710316c0597086a4d779c788caa6444438944a850b2f8612ff57eedaf31be9a8427fd282251

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1020-18-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/1020-20-0x0000000001FF0000-0x0000000001FF6000-memory.dmp

    Filesize

    24KB

  • memory/1020-26-0x0000000001FD0000-0x0000000001FD6000-memory.dmp

    Filesize

    24KB

  • memory/1020-49-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/3352-0-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/3352-1-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/3352-9-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/3352-2-0x00000000006D0000-0x00000000006D6000-memory.dmp

    Filesize

    24KB

  • memory/3352-17-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB