Analysis

  • max time kernel
    13s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    23/02/2024, 12:39

General

  • Target

    2024-02-23_60bfe906d800bf4e1d36e16442812187_cryptolocker.exe

  • Size

    32KB

  • MD5

    60bfe906d800bf4e1d36e16442812187

  • SHA1

    b8c87c956d92c4427a6b79e4b00b6e98fdf09432

  • SHA256

    98d4374754b3c2f1d6cd2c79f705f85f63935fb00c7a67bc4c289b638ed85feb

  • SHA512

    ed470e6fef381cee01d6bc5260f17099d59b2758359da4cb093d7af4d0bacfa26e2c4554e8f7641e4d749dd4120388e5489b50afa209b77db5de6f1ce63d43bb

  • SSDEEP

    384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSznUsDk2:b/yC4GyNM01GuQMNXw2PSjZR

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Creates a large amount of network flows 1 TTPs

    This may indicate a network scan to discover remotely running services.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious use of UnmapMainImage 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-02-23_60bfe906d800bf4e1d36e16442812187_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-23_60bfe906d800bf4e1d36e16442812187_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:548
    • C:\Users\Admin\AppData\Local\Temp\retln.exe
      "C:\Users\Admin\AppData\Local\Temp\retln.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of UnmapMainImage
      PID:832

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • \Users\Admin\AppData\Local\Temp\retln.exe

          Filesize

          33KB

          MD5

          e0671dc105ee61eced488bee1c94ba8e

          SHA1

          465f8db788448669dfc029e9ecbedfea1f48dc57

          SHA256

          b62698acab5cbb076c858f01c4247c26d630c79fea5c34dda92dfed4fae58643

          SHA512

          9f06ab205dfd92c2bac1a801d9f278cb23cfa341510d839b08244285885f1472e97c74a54e040e1cbfb94b3d0a932485ac4da461c90c307bd7eca99ebd7af616

        • memory/548-0-0x0000000000260000-0x0000000000266000-memory.dmp

          Filesize

          24KB

        • memory/548-1-0x0000000000400000-0x0000000000406000-memory.dmp

          Filesize

          24KB

        • memory/548-2-0x0000000000260000-0x0000000000266000-memory.dmp

          Filesize

          24KB