Analysis

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

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    23-02-2024 02:46

General

  • Target

    2024-02-23_c86209e650de4fd5a3c38b7386d5ccff_cryptolocker.exe

  • Size

    88KB

  • MD5

    c86209e650de4fd5a3c38b7386d5ccff

  • SHA1

    ef5a0169e066eed1c3e5aafb0c341bae9b445a7d

  • SHA256

    2833b8d3b8eb040f00407b7bdd1edb15e43cd1c1b05586d7e5c476687a1b20e9

  • SHA512

    97440c83eec73a939e4d9034d25b5e2bc80eeb9c14bf29eded75098274f8bddea9cdb7dea54e87bfa4d9d25f6f0195bdf0089ba78571c7d07dafdd56789c137a

  • SSDEEP

    1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwMg7dU8:AnBdOOtEvwDpj6zF

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • UPX dump on OEP (original entry point) 5 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • UPX packed file 5 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • 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\2024-02-23_c86209e650de4fd5a3c38b7386d5ccff_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-23_c86209e650de4fd5a3c38b7386d5ccff_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2524
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2628

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    88KB

    MD5

    bff1b088a72d54ebc69fd592dee86312

    SHA1

    2e4ff8256e5ce31e8779fecf2e1c62073367a4f7

    SHA256

    ea0e0591c49777262f13b644a760945adf52e6d6c0d3d8c3c349c4f6bd05f45f

    SHA512

    3aa8d6f098ec8209106b123081e3a3e72aaec0bd5f53938ac5817cc7a5749968c57ecbeb821d70806e05e03a1429b967b87ce59432150f7632a1d5f9c26e273f

  • memory/2524-1-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2524-0-0x0000000000420000-0x0000000000426000-memory.dmp

    Filesize

    24KB

  • memory/2524-2-0x0000000000460000-0x0000000000466000-memory.dmp

    Filesize

    24KB

  • memory/2524-8-0x0000000000420000-0x0000000000426000-memory.dmp

    Filesize

    24KB

  • memory/2524-14-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2524-28-0x00000000006D0000-0x00000000006DF000-memory.dmp

    Filesize

    60KB

  • memory/2628-16-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2628-18-0x0000000000470000-0x0000000000476000-memory.dmp

    Filesize

    24KB

  • memory/2628-21-0x0000000000330000-0x0000000000336000-memory.dmp

    Filesize

    24KB

  • memory/2628-26-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB