Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10/05/2024, 05:03

General

  • Target

    2024-05-10_f4c3faa8cc6a4c18b9aa37c911831b98_cryptolocker.exe

  • Size

    41KB

  • MD5

    f4c3faa8cc6a4c18b9aa37c911831b98

  • SHA1

    f669834453910e6530be56b352f998796969f5b5

  • SHA256

    8f60700b7dbf7cce97bd459d1f7c4f0b8f02d95bb22253b2471a71f7db8acac5

  • SHA512

    b80ad856a52b9011cf15605e533fd718ef3beea920c6d57940255d4edd82725f99082e6e4391d706d86d8ad2ca83beaf12b1abcf50ed382b0d07471409f55636

  • SSDEEP

    768:TS5nQJ24LR7tOOtEvwDpjGqPhqlcnvgpnY1P:m5nkFNMOtEvwDpjG8hgpY1P

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\2024-05-10_f4c3faa8cc6a4c18b9aa37c911831b98_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-10_f4c3faa8cc6a4c18b9aa37c911831b98_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4460
    • 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:3860

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          41KB

          MD5

          41a1cdfa98b163e686e09e5f9a1779b4

          SHA1

          bb3041fc8acc70a83b44c262e2845dd832736c5d

          SHA256

          4ff9cd596d3c45f5a453f4659693b76fdde52869087bbb49b1acfb01d3c6f56b

          SHA512

          f235bf72b9b5746783c9561b308f980c6dd3a8986f22a7222a3d0379f869025c9554db024607244d9df4e33fda6ed29ebd1908be1f0fe5c4cf494189b53251e3

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/3860-18-0x0000000000500000-0x000000000050E000-memory.dmp

          Filesize

          56KB

        • memory/3860-48-0x0000000000500000-0x000000000050E000-memory.dmp

          Filesize

          56KB

        • memory/4460-0-0x0000000000500000-0x000000000050E000-memory.dmp

          Filesize

          56KB

        • memory/4460-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/4460-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/4460-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

          Filesize

          24KB

        • memory/4460-17-0x0000000000500000-0x000000000050E000-memory.dmp

          Filesize

          56KB