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Analysis

  • max time kernel
    148s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28/03/2024, 13:58

General

  • Target

    2024-03-28_d8f0be4921671acdd5bbf2ffbd7191bd_cryptolocker.exe

  • Size

    101KB

  • MD5

    d8f0be4921671acdd5bbf2ffbd7191bd

  • SHA1

    664e7d81bdac4fd2bd751fe9ac18902fbdae7471

  • SHA256

    3c145965e8146788963be3056eccfeb35e7f6dd7263122d7f665ca50d250f968

  • SHA512

    c2185c1fe3d9737b2098690ca2a5919ab6c70bf399e61454960a0ebbc004d388dbd41ef1ce6dcc84b1e293ed09d85efa61ac3af458efcbbfb7a955b41048c4e9

  • SSDEEP

    1536:V6QFElP6n+gMQMOtEvwDpjQGYQbN/PKwNgpQbCJjN34:V6a+pOtEvwDpjtzJ

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 1 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\2024-03-28_d8f0be4921671acdd5bbf2ffbd7191bd_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-28_d8f0be4921671acdd5bbf2ffbd7191bd_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:212
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:3836

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    101KB

    MD5

    abe621e02887f47fd87babd11aadd3ad

    SHA1

    000c9597dc9af9badfa18ebf00b613947e0eecc1

    SHA256

    ef67cea60afb85e89cc3194eda37ccf4b1c0e4b74d3bb91e564c882107ea0a21

    SHA512

    b422255635681a8bf67f6ea9cddc40ddfbe6d4dcb9545dafd638ff952321198bf329b28c514c2625734dcc0c2248d2ee9f69985643b915a5a2e15a6bf51ff5c7

  • memory/212-0-0x0000000000560000-0x0000000000566000-memory.dmp

    Filesize

    24KB

  • memory/212-1-0x0000000000560000-0x0000000000566000-memory.dmp

    Filesize

    24KB

  • memory/212-2-0x00000000021B0000-0x00000000021B6000-memory.dmp

    Filesize

    24KB

  • memory/3836-17-0x0000000000760000-0x0000000000766000-memory.dmp

    Filesize

    24KB

  • memory/3836-19-0x0000000000630000-0x0000000000636000-memory.dmp

    Filesize

    24KB