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Analysis

  • max time kernel
    148s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20240215-en
  • resource tags

    arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
  • submitted
    31/05/2024, 22:42

General

  • Target

    2024-05-31_8b89739bf7e2026c41fd0a4b8a530190_cryptolocker.exe

  • Size

    49KB

  • MD5

    8b89739bf7e2026c41fd0a4b8a530190

  • SHA1

    d9193a3bbe83b891bed3a1f157c56a9d1adf2484

  • SHA256

    ba68496b711dd56d3693c236b84f060873a7ef07f181d0fb9069fb4e935d84a4

  • SHA512

    c9b4f9d53234025a9bdbcdb7332342a42abb9e7a2cb89cde1aaf94bf6d425a94ebd8a02c696797fb4a3466e74173de23ab7f09cc44711603be51a0a07a188177

  • SSDEEP

    768:qmOKYQDf5XdrDmjr5tOOtEvwDpjAajFEitQbDmoSQCVUBJUkQqAHBIG05W2Mocbg:qmbhXDmjr5MOtEvwDpj5cDtKkQZQp

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 3 IoCs
  • UPX dump on OEP (original entry point) 5 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\2024-05-31_8b89739bf7e2026c41fd0a4b8a530190_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-31_8b89739bf7e2026c41fd0a4b8a530190_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1956
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2132

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    50KB

    MD5

    74c578b5b0b90c7421f19d60a1c5bcdc

    SHA1

    81a7a16825cce8f935bc565111e48b8d268f47f8

    SHA256

    a65788803b48d7d66ba159dec7c3555790303c52b3bc00a6cb7bda81bbc0bc9f

    SHA512

    37e7f835433f3a21040926ea2e034ee88fc4044a9a6bd8c2ad5554019b75306632c907232794d92199a68e06467f252d7858432849182fe821e1f52181ade645

  • memory/1956-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/1956-2-0x0000000000460000-0x0000000000466000-memory.dmp

    Filesize

    24KB

  • memory/1956-1-0x0000000000420000-0x0000000000426000-memory.dmp

    Filesize

    24KB

  • memory/1956-9-0x0000000000420000-0x0000000000426000-memory.dmp

    Filesize

    24KB

  • memory/1956-16-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2132-19-0x0000000000470000-0x0000000000476000-memory.dmp

    Filesize

    24KB

  • memory/2132-18-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2132-26-0x0000000000430000-0x0000000000436000-memory.dmp

    Filesize

    24KB

  • memory/2132-27-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB