Analysis

  • max time kernel
    140s
  • max time network
    123s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240419-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03/05/2024, 03:30

General

  • Target

    2024-05-03_2ef653e2cd9302714c26e23279340703_cryptolocker.exe

  • Size

    44KB

  • MD5

    2ef653e2cd9302714c26e23279340703

  • SHA1

    789effe705679fb3803acf9c8573fa552218ddd0

  • SHA256

    9dc05da14f147c93c760209e65d4b8354a6256b1fbf202b01d61262626aa31db

  • SHA512

    98ae84955de3660f8cbcba9eb3f633e017406a5439f51fefb94f716ed90d50ff5a981f5501b0adffba7730c0136fe56131318b01092691a83d07902aea289d8c

  • SSDEEP

    768:TS5nQJ24LR7tOOtEvwDpjGqPhqlcnvhx5/xFRp5jvb2:m5nkFNMOtEvwDpjG8hhXj532

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 2 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\2024-05-03_2ef653e2cd9302714c26e23279340703_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-03_2ef653e2cd9302714c26e23279340703_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4800
    • 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:2208

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          44KB

          MD5

          8e3155ffb6ab217ddbe5de55e5742ab4

          SHA1

          043e611a89992e28a311f5a02bf494339a0c64b0

          SHA256

          57099325937757cc9165616b5369a4626b985e3856dc177fb9aea1563e41a007

          SHA512

          9bde914aabcec3fbb0e6dcf288b335f22094e0b9176978ecd65a7fb7eda7475e0ba082385519c04a6620c6f110ca0e4233884b56d4a27c98a7941ffbad015207

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/2208-19-0x0000000000650000-0x0000000000656000-memory.dmp

          Filesize

          24KB

        • memory/2208-25-0x0000000000630000-0x0000000000636000-memory.dmp

          Filesize

          24KB

        • memory/2208-49-0x0000000000500000-0x000000000050E000-memory.dmp

          Filesize

          56KB

        • memory/4800-0-0x0000000000500000-0x000000000050E000-memory.dmp

          Filesize

          56KB

        • memory/4800-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

          Filesize

          24KB

        • memory/4800-2-0x00000000006C0000-0x00000000006C6000-memory.dmp

          Filesize

          24KB

        • memory/4800-9-0x00000000005A0000-0x00000000005A6000-memory.dmp

          Filesize

          24KB

        • memory/4800-17-0x0000000000500000-0x000000000050E000-memory.dmp

          Filesize

          56KB