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Analysis

  • max time kernel
    121s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20240508-en
  • resource tags

    arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
  • submitted
    24/05/2024, 02:34

General

  • Target

    2024-05-24_8a2a97d81bb7db016007e03ed525f531_cryptolocker.exe

  • Size

    34KB

  • MD5

    8a2a97d81bb7db016007e03ed525f531

  • SHA1

    6e701424659254722421fb334a193ecf404b29c9

  • SHA256

    ea0a9bcd2074948bbd843836f64f4ed6dde0c960126154f4f0675bae80f79ccd

  • SHA512

    ee6a8028e238f112b68269fc0fced92bee568b7551eb72e158f42b78cc0aea0baa410d66580f4c0c373ea2afb803648598489bf0feeeb60d05e2b428543336b2

  • SSDEEP

    768:bxNQIE0eBhkL2Fo1CCwgfjOg9Arbkzos5R:bxNrC7kYo1Fxf2rY9

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 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).

  • Modifies system certificate store 2 TTPs 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-24_8a2a97d81bb7db016007e03ed525f531_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-24_8a2a97d81bb7db016007e03ed525f531_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2892
    • C:\Users\Admin\AppData\Local\Temp\pissa.exe
      "C:\Users\Admin\AppData\Local\Temp\pissa.exe"
      2⤵
      • Executes dropped EXE
      • Modifies system certificate store
      PID:2992

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    35KB

    MD5

    d8404bd4bd4e6aa00aa84c7b387c1c6c

    SHA1

    ecc7104e2ecf8e970fc1c3b0da315fb841f3daaa

    SHA256

    319bd9dc3717c62c3cf01da1f0d91c3b23af4a73a70c6dd21889de458e696478

    SHA512

    4fec8788b5b29b4edc158d8dec2469483774167d7f154c714aadd239ff63e73306170a2510445d349790cce213bd6d0b77263fa9c7fa07006c9e12509d8c8029

  • memory/2892-0-0x0000000001CA0000-0x0000000001CA6000-memory.dmp

    Filesize

    24KB

  • memory/2892-1-0x0000000001CB0000-0x0000000001CB6000-memory.dmp

    Filesize

    24KB

  • memory/2892-8-0x0000000001CA0000-0x0000000001CA6000-memory.dmp

    Filesize

    24KB

  • memory/2992-15-0x00000000004C0000-0x00000000004C6000-memory.dmp

    Filesize

    24KB

  • memory/2992-22-0x00000000004B0000-0x00000000004B6000-memory.dmp

    Filesize

    24KB