Analysis

  • max time kernel
    149s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    12-03-2024 01:56

General

  • Target

    2024-03-12_bee6a316be130c0aa5e275fd2e3dd81e_cryptolocker.exe

  • Size

    30KB

  • MD5

    bee6a316be130c0aa5e275fd2e3dd81e

  • SHA1

    fbb961bbc6772c029157d65c5d3d2a98f0bc5231

  • SHA256

    f19c0d878ef868ee19cf3bf9c3879c2568d4821e2429b99686059a8f1528d0c7

  • SHA512

    f0e988d7559cdcce12ee1435a5dacee8526b6e94378edd8a6c08bbd6597d0eaacd156641f9ed9cd4fe21c8262b5cdc31d1685cf50c1497f0c4bf1e5a008f9b69

  • SSDEEP

    768:q0ZziOWwULueOSdE8tOOtEvwDpjeWaJIO/xuhx:q0zizzOSxMOtEvwDpj/arQH

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 6 IoCs
  • Detection of Cryptolocker Samples 4 IoCs
  • UPX dump on OEP (original entry point) 6 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\2024-03-12_bee6a316be130c0aa5e275fd2e3dd81e_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-12_bee6a316be130c0aa5e275fd2e3dd81e_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2276
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2952

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    30KB

    MD5

    57c1d1e8bec615d5f872352b595e10bd

    SHA1

    52f44ef1eb134d0aaac82852046bee0d13f0ea5d

    SHA256

    8f5661c9a46f46f3fee802344738ac4da1edd2e513f4cc5771c7695fe4cff900

    SHA512

    28e6d0e1602bfa4b4b995577670dd50d5cae47454e5900c34acfd4a4481ebd45469dca21a9c6a24ffd1bdd7e7cc6dc2a98b628495ca6beca955bc2c76b919a2e

  • memory/2276-1-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2276-0-0x00000000002C0000-0x00000000002C6000-memory.dmp

    Filesize

    24KB

  • memory/2276-3-0x00000000002C0000-0x00000000002C6000-memory.dmp

    Filesize

    24KB

  • memory/2276-2-0x0000000000600000-0x0000000000606000-memory.dmp

    Filesize

    24KB

  • memory/2276-13-0x0000000001E70000-0x0000000001E80000-memory.dmp

    Filesize

    64KB

  • memory/2276-15-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2952-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2952-19-0x0000000000430000-0x0000000000436000-memory.dmp

    Filesize

    24KB

  • memory/2952-26-0x0000000000250000-0x0000000000256000-memory.dmp

    Filesize

    24KB

  • memory/2952-27-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB