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Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240221-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/02/2024, 15:33

General

  • Target

    2024-02-22_4fca0af95db245fca11fd921d3086cda_cryptolocker.exe

  • Size

    49KB

  • MD5

    4fca0af95db245fca11fd921d3086cda

  • SHA1

    2023893550c90f49e7cc7de58883fd8a4708ba01

  • SHA256

    a46176397842241861983142e6bc7766a2c413cbbdf9155bfb102d55494e8421

  • SHA512

    e5a3c19855e0456f6de6310cbdc1c88dc5035cd5bbaf67ba834749814d4e57c85bc58fb3dd29d684455184746bc60ac09fe59a29736f8b516dab8a55cf3b2683

  • SSDEEP

    768:79inqyNR/QtOOtEvwDpjBK/rJ+Nw8qnTHYcF:79mqyNhQMOtEvwDpjBxe8GrF

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 3 IoCs
  • Detection of Cryptolocker Samples 3 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-02-22_4fca0af95db245fca11fd921d3086cda_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-22_4fca0af95db245fca11fd921d3086cda_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3780
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:4228

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    49KB

    MD5

    9af3537a82fb02c094b26a52dac8395e

    SHA1

    561ada0d9c0b432f928ae2a493a93e6967163d75

    SHA256

    4bf9762b5983795eeccffe69b838cb63603eba2cced3e0c7e86b962b8b6bdb36

    SHA512

    6f685c4fe570668133bd6bab6e872d634f2a84088240c014a5a124b927d7df7eaca6ae4709b6cb15d595d91eca802811af33fa29ab4a1dab1eb3683e8e8ed47a

  • memory/3780-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/3780-1-0x00000000005E0000-0x00000000005E6000-memory.dmp

    Filesize

    24KB

  • memory/3780-2-0x00000000005E0000-0x00000000005E6000-memory.dmp

    Filesize

    24KB

  • memory/3780-3-0x0000000000600000-0x0000000000606000-memory.dmp

    Filesize

    24KB

  • memory/3780-17-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/4228-19-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/4228-25-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB