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Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240412-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24/04/2024, 00:35

General

  • Target

    2024-04-24_447ca6806ef2db20485c607d17db63d7_cryptolocker.exe

  • Size

    84KB

  • MD5

    447ca6806ef2db20485c607d17db63d7

  • SHA1

    d2a7ccdef2fa28860ebe133f8e294cfd14d8b6c7

  • SHA256

    14c6f8520edee094586244f530782ca92c4a568fa61c4604ba5b1632da77455e

  • SHA512

    06b82df2185779825e95361b339319c76f97b78077acf14dc7996c935e9c8f317ffc18f6fe658c98ed705f7acffacf0d9e2cea8ba39a5eb04a36412cf1162e6b

  • SSDEEP

    768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLa5VccPtNw5CS95yFPnjh:V6QFElP6n+gMQMOtEvwDpjyaLccVNlL

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\2024-04-24_447ca6806ef2db20485c607d17db63d7_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-24_447ca6806ef2db20485c607d17db63d7_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3668
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:3980

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    84KB

    MD5

    8c378fd248a2494a8ee5b526d1027123

    SHA1

    b22c8d160ee25c440b577cfe1573316a2b04f83e

    SHA256

    b540c218b27def1544ad86f72b6ab7479e3f3a8dc49875b56336bcfb138d1bfa

    SHA512

    928df25e5edd3f2c178482d8cf3f757d30cbc248ad890c25a17dcef6e67933d06f23dd73251b4d0649a706de0a55e9c2dcb469748a57739534bd0b1ac5e04730

  • memory/3668-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/3668-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/3668-2-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/3980-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/3980-19-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB