Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29/03/2024, 17:02

General

  • Target

    2024-03-29_8febb3c9e4eb2f04e039dbcf01e18345_cryptolocker.exe

  • Size

    78KB

  • MD5

    8febb3c9e4eb2f04e039dbcf01e18345

  • SHA1

    7825d10a0c65ee66c2ee869c8a682115fdd2ac2c

  • SHA256

    aa026e0003679fe566cb4ccbb004337b1ed3d0b5ae6323c581d4b1bf0494d2c8

  • SHA512

    80b726e7c2d7f4d331d3eebac10221024e8f01fac7ac80a0c700124466d156b78bae9573f1ffc40f23a22f6ee26c1039d9e72bad4fbcee7eeff9f53a576f4573

  • SSDEEP

    1536:ZzFbxmLPWQMOtEvwDpj386Sj/WprgJN6tZdOyJ3KEWTmHT:ZVxkGOtEvwDpjcaxJ

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 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\2024-03-29_8febb3c9e4eb2f04e039dbcf01e18345_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-29_8febb3c9e4eb2f04e039dbcf01e18345_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4712
    • 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:4728

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          78KB

          MD5

          bbd246209db49bd570c59a7afdaa7253

          SHA1

          db161c1a052a3be62563adaf7108152f77eca72e

          SHA256

          d2d21c5bafe1859234767b84c410c76788fc494be4c37c45536f518ec92c29c9

          SHA512

          8bd86bfb953dcf48a7b05c51d51c8b23f0f236318fa754c3f907218a4f8940d90de0d15c099da4b837993e29caf2d7b3f28692faafbbd76562b75ea3ee373824

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/4712-0-0x0000000000450000-0x0000000000453000-memory.dmp

          Filesize

          12KB

        • memory/4712-1-0x0000000000680000-0x0000000000686000-memory.dmp

          Filesize

          24KB

        • memory/4712-2-0x0000000000680000-0x0000000000686000-memory.dmp

          Filesize

          24KB

        • memory/4712-3-0x0000000002240000-0x0000000002246000-memory.dmp

          Filesize

          24KB

        • memory/4712-19-0x0000000000450000-0x0000000000453000-memory.dmp

          Filesize

          12KB

        • memory/4728-17-0x00000000004F0000-0x0000000000500000-memory.dmp

          Filesize

          64KB

        • memory/4728-20-0x0000000001F70000-0x0000000001F76000-memory.dmp

          Filesize

          24KB

        • memory/4728-25-0x00000000021E0000-0x00000000021E6000-memory.dmp

          Filesize

          24KB