Analysis

  • max time kernel
    133s
  • max time network
    125s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240611-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25/06/2024, 21:24

General

  • Target

    2024-06-25_664968faff801732d0258abf5efd4669_cryptolocker.exe

  • Size

    43KB

  • MD5

    664968faff801732d0258abf5efd4669

  • SHA1

    96ef9a787193820cf84ce2f2e808f2175be08821

  • SHA256

    a11c36e8472c167195baf447b452760047c3b035e46f4cb479c9eb7333e7e823

  • SHA512

    f9ae90581ab7db460e5c9bfc91aefb8206e6346334c01ff18f89791919cb920bbb497bf47d570f29219da798bb5609b99b0656045076cd73115e33f5b9025f93

  • SSDEEP

    768:TS5nQJ24LR7tOOtEvwDpjGqPhqlcnvgpnY1n9p:m5nkFNMOtEvwDpjG8hgpY19p

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 3 IoCs
  • Detects executables built or packed with MPress PE compressor 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_664968faff801732d0258abf5efd4669_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-25_664968faff801732d0258abf5efd4669_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1020
    • 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:1112

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          44KB

          MD5

          6045ddca49d3753dd230c04e8724b01a

          SHA1

          f9305578515de57151e0de21ff29ca191f2eeb5d

          SHA256

          d69c0e5b4f43011f4e90ae4e0d5a723b91402fd63624c0178548dd2c60e3ad96

          SHA512

          0a6972b48c618cc3e90e6b6695d71b55377382a0c15b62d0e76e73d09b86909fa5a4b7461bc715d72f6671428eadfaca4b96c145b9930fe270300464c5907df7

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

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

          Filesize

          56KB

        • memory/1020-1-0x0000000000750000-0x0000000000756000-memory.dmp

          Filesize

          24KB

        • memory/1020-2-0x0000000002110000-0x0000000002116000-memory.dmp

          Filesize

          24KB

        • memory/1020-9-0x0000000000750000-0x0000000000756000-memory.dmp

          Filesize

          24KB

        • memory/1020-19-0x0000000000500000-0x000000000050E000-memory.dmp

          Filesize

          56KB

        • memory/1112-18-0x0000000000500000-0x000000000050E000-memory.dmp

          Filesize

          56KB

        • memory/1112-21-0x00000000020F0000-0x00000000020F6000-memory.dmp

          Filesize

          24KB

        • memory/1112-27-0x0000000000730000-0x0000000000736000-memory.dmp

          Filesize

          24KB

        • memory/1112-50-0x0000000000500000-0x000000000050E000-memory.dmp

          Filesize

          56KB