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Analysis

  • max time kernel
    147s
  • max time network
    152s
  • 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, 10:27

General

  • Target

    2024-02-22_2257e8e14725ce11cd1b49a6fff7b1a3_cryptolocker.exe

  • Size

    51KB

  • MD5

    2257e8e14725ce11cd1b49a6fff7b1a3

  • SHA1

    c47ebbcefe6919abf839d60fb8df6139ac4745c5

  • SHA256

    b7be0d113d0a6a2207c728db14d17a7e733f8e8609f648919b91592d4fc94d63

  • SHA512

    6d25b9c71f7ef0a843194212fb2d0a30da0a8c8197540b973431d2f145753e3d3563c98b4322df41e3693c1547c984b5cdf2e4e4d1d2c26dea068a0f0bc878fa

  • SSDEEP

    1536:V6QFElP6n+gMQMOtEvwDpjeJQ7pojakloo:V6a+pOtEvwDpj4

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\2024-02-22_2257e8e14725ce11cd1b49a6fff7b1a3_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-22_2257e8e14725ce11cd1b49a6fff7b1a3_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1364
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:4176

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    51KB

    MD5

    4bd213629f034666411cb73833033df9

    SHA1

    cd1221123e45961f9ea79b8e0145399ef78c6615

    SHA256

    b40f2e9291751e0c17b68f1d60eb052ee3b9bb714e7b3fdfe443d374275ef8b0

    SHA512

    0f40385dbad9a36b6c79ba68297dca73391270a3968574f594800d810d7be7a4c83be90d9c4862ccea11d309b409c99ac3dc1291e840bf57a7aeba0e4e122b16

  • memory/1364-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/1364-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/1364-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/4176-18-0x0000000002050000-0x0000000002056000-memory.dmp

    Filesize

    24KB

  • memory/4176-17-0x0000000002070000-0x0000000002076000-memory.dmp

    Filesize

    24KB