Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240221-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23/02/2024, 20:05

General

  • Target

    2024-02-23_cf17aaaf33ee6e45e0b9a16bd8e753d3_cryptolocker.exe

  • Size

    46KB

  • MD5

    cf17aaaf33ee6e45e0b9a16bd8e753d3

  • SHA1

    3ca5f335d3e89703294874c7f066d34857988646

  • SHA256

    63305d803d37417f2c31d8aeddf43883bbe4f9ceab1b6f6f9e693682208c8065

  • SHA512

    4f03c16c87b8f5791e39482a7c1f580965fd51be0d614cfa3ca8f949ed9608b107098ab9b71dcb3061bca9f9b5173de36dbd4a0c5c93ef260945835d20de210a

  • SSDEEP

    768:xQz7yVEhs9+4uR1bytOOtEvwDpjWE6BLtldtS:xj+VGMOtEvwDpjk/tS

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 4 IoCs
  • Detects executables built or packed with MPress PE compressor 4 IoCs
  • Checks computer location settings 2 TTPs 1 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).

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-02-23_cf17aaaf33ee6e45e0b9a16bd8e753d3_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-23_cf17aaaf33ee6e45e0b9a16bd8e753d3_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:5100
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Executes dropped EXE
      PID:1996

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          47KB

          MD5

          64c62c3dcd1cb3e7bf54c2f6290a6e96

          SHA1

          527c4fef09dbf5f13d3ffc2a53e1b2b49fec60e4

          SHA256

          34fcbd84a1c5c8791b2e00676eed6c774e1e827383f1bc4a27d361a9f2d69107

          SHA512

          e3112f2fa12c197d924204ef10ca01b198c07c962aacf803ddf70d3395d43c9a967715eadd1a6ec36c3017620bc62dcc316207ab2fa79ac7b1d8a6f4139e57bf

        • memory/1996-19-0x00000000005E0000-0x00000000005E6000-memory.dmp

          Filesize

          24KB

        • memory/1996-21-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/1996-26-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/5100-0-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/5100-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

          Filesize

          24KB

        • memory/5100-2-0x00000000005A0000-0x00000000005A6000-memory.dmp

          Filesize

          24KB

        • memory/5100-3-0x00000000006C0000-0x00000000006C6000-memory.dmp

          Filesize

          24KB

        • memory/5100-17-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB