Analysis

  • max time kernel
    148s
  • max time network
    155s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    10/06/2024, 04:41

General

  • Target

    2024-06-10_2291df72639b1839f793b162d82513c3_cryptolocker.exe

  • Size

    42KB

  • MD5

    2291df72639b1839f793b162d82513c3

  • SHA1

    541a90f68677b0a4972b9a5c5fc0e810cdc4afc5

  • SHA256

    408340107c86f0cba968de6cccaa81a06543ca368250bdeb617b5a44cae48d21

  • SHA512

    c3facbf85590ebc1c6dbc384d88d365533f281e57f5e0aafbc198289cd79e92207bb2d2bc305589d4cc8ead346f9bb3b66b5ddb234abe6c55de33d37701b561e

  • SSDEEP

    768:bCDOw9UiaKHfjnD0S16avdrQFiLjJvtAqFF:bCDOw9aMDooc+vAqH

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-06-10_2291df72639b1839f793b162d82513c3_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-10_2291df72639b1839f793b162d82513c3_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2140
    • C:\Users\Admin\AppData\Local\Temp\lossy.exe
      "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
      2⤵
      • Executes dropped EXE
      PID:2504

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          43KB

          MD5

          be599d772e365bcb6d21acde7210c327

          SHA1

          9a904fc99d4ef7b54ba527189c63384927c2f705

          SHA256

          ecca5bf370cc8dfbf5e2083e88fc820f3f80264e02857b6ad1ec21bda0648456

          SHA512

          235188e5f81a0fbd45ee51212e5590bd39f75746cfd43ce38fa8d96e19ac9014b450432f2bf8133f76965ca9ed8f129f5b6e1b657da5f321013b2c410211b74c

        • memory/2140-0-0x0000000008000000-0x000000000800A000-memory.dmp

          Filesize

          40KB

        • memory/2140-2-0x0000000000550000-0x0000000000556000-memory.dmp

          Filesize

          24KB

        • memory/2140-9-0x0000000000240000-0x0000000000246000-memory.dmp

          Filesize

          24KB

        • memory/2140-1-0x0000000000240000-0x0000000000246000-memory.dmp

          Filesize

          24KB

        • memory/2140-15-0x0000000008000000-0x000000000800A000-memory.dmp

          Filesize

          40KB

        • memory/2504-24-0x00000000001D0000-0x00000000001D6000-memory.dmp

          Filesize

          24KB

        • memory/2504-17-0x0000000000200000-0x0000000000206000-memory.dmp

          Filesize

          24KB

        • memory/2504-25-0x0000000008000000-0x000000000800A000-memory.dmp

          Filesize

          40KB