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Analysis

  • max time kernel
    148s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    20/02/2024, 01:00

General

  • Target

    2024-02-20_f7c37f8878239741d4243f50479158cc_cryptolocker.exe

  • Size

    71KB

  • MD5

    f7c37f8878239741d4243f50479158cc

  • SHA1

    8d3b637a19688ee1ca246385a10d072a12feb179

  • SHA256

    a8f4150007d3d933b3fcade9ec948c456a4719d2c6d7110e18aaf6346e174317

  • SHA512

    98ca27ac2c5a4cbb97fe2a16170f9dc98613680d5803b609227fe5c32c33678f22f45d38e178065603c7f7d1bf300cf8a729ebeea579fb12d595bf5b1be14093

  • SSDEEP

    1536:X6QFElP6n+gJQMOtEvwDpjBZYTjipvF2bx1eSi:X6a+SOtEvwDpjBZYvQd2c

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 1 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\2024-02-20_f7c37f8878239741d4243f50479158cc_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-20_f7c37f8878239741d4243f50479158cc_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2664
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2084

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    72KB

    MD5

    a1a6c6c58c31e2a8e0e23948599143f7

    SHA1

    6a2f9fa471548c13d1ae9d4fb95039eadf14623a

    SHA256

    1d110a3b6b230ec8efec4e9081cbbeb53aae47cd21571c45acb29bfc70bf93ba

    SHA512

    a58055850e9c86f239961c9beae70884d718efac41c3fbd38ef2bd0284a9ce04fc7108c34290d87506b1d63fbb0e2f7cb2a74eb6f7d0c95e90a99c05cc301722

  • memory/2084-15-0x0000000000300000-0x0000000000306000-memory.dmp

    Filesize

    24KB

  • memory/2084-18-0x0000000000230000-0x0000000000236000-memory.dmp

    Filesize

    24KB

  • memory/2664-0-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/2664-1-0x0000000000280000-0x0000000000286000-memory.dmp

    Filesize

    24KB

  • memory/2664-2-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB