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Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240412-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20/04/2024, 17:10

General

  • Target

    2024-04-20_f56ac8c74578e6389ad629fc3fefbed2_cryptolocker.exe

  • Size

    83KB

  • MD5

    f56ac8c74578e6389ad629fc3fefbed2

  • SHA1

    5169b2a407caf3791dcdb1b6e7fd5bab3e86326d

  • SHA256

    35ad29873b334a16ad3bd730b512fd35cc5b6e10f78f44e31fc0150180907203

  • SHA512

    f7d37429f64ee11ac096c90c9ab390b23bb7b14ccdcdd707dc2c90ad29914d77f0dfad769b42e6a892649018d1876ba8ba9eaf824238bb51e854a61cb256460e

  • SSDEEP

    1536:vj+jsMQMOtEvwDpj5HwYYTjipvF2hBfWafHNBQ:vCjsIOtEvwDpj5H9YvQd24

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\2024-04-20_f56ac8c74578e6389ad629fc3fefbed2_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-20_f56ac8c74578e6389ad629fc3fefbed2_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4872
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Executes dropped EXE
      PID:740

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    84KB

    MD5

    e45b81f695926ad7de18c2e018c9b070

    SHA1

    a89704ab0c78913020ef927626e5d7213bf9a468

    SHA256

    5ce201a5e04ee04c1f96aef462e354b900246d3bca4497890663deacf75fc742

    SHA512

    edeb646759fffaf242423fc73aaa70fcbade358234b78fd5ad2a7a54d790d0edc2a47432bc1f50f0266f81e6c7ccb38fa444bdce42bfa35de0ee1490814ded9d

  • memory/740-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/740-20-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4872-0-0x0000000002050000-0x0000000002056000-memory.dmp

    Filesize

    24KB

  • memory/4872-1-0x0000000002050000-0x0000000002056000-memory.dmp

    Filesize

    24KB

  • memory/4872-2-0x0000000002070000-0x0000000002076000-memory.dmp

    Filesize

    24KB