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Analysis

  • max time kernel
    146s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11/04/2024, 07:53

General

  • Target

    2024-04-11_dfc2e19058f25f970d2c02084e14e5fc_cryptolocker.exe

  • Size

    73KB

  • MD5

    dfc2e19058f25f970d2c02084e14e5fc

  • SHA1

    cea4909c114cffe8afd49508407077c5bf4896ca

  • SHA256

    a084c3bd9d7f6446e818a79880ac6dbdc7aad3675df2422fb7f9bddfe4c58c7a

  • SHA512

    6b6f6945c4a02739f0c38acd7dabfee417c52b26c90fc6893be903a72b3cbc1a898ac12ff9971471c8b3d231e6c62f79b4a17b8b9ea01d8f93ef38d417037c07

  • SSDEEP

    1536:X6QFElP6n+gJQMOtEvwDpjBZYTjipvF2bx1rHsu:X6a+SOtEvwDpjBZYvQd2F

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\2024-04-11_dfc2e19058f25f970d2c02084e14e5fc_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-11_dfc2e19058f25f970d2c02084e14e5fc_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3200
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2204

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    73KB

    MD5

    262322ea7e9f7435840474f6d938b921

    SHA1

    f1973f3e953a26c63032026528605b72ccab5bfb

    SHA256

    6d2390b504c5bed0f51cb27dd53c6177f82a4633a42a53f91a4370d6169c9dbb

    SHA512

    3912cb522c991aa0f30c9f138fc73bdb1794c856990f05fd8e7d3a8b23246fc075d7cc45cc5ea9dc50e1e0bb8faad19eb6598558d000e92cf8dd909f0822ed54

  • memory/2204-17-0x0000000000770000-0x0000000000776000-memory.dmp

    Filesize

    24KB

  • memory/2204-18-0x0000000000730000-0x0000000000736000-memory.dmp

    Filesize

    24KB

  • memory/3200-0-0x0000000000560000-0x0000000000566000-memory.dmp

    Filesize

    24KB

  • memory/3200-1-0x0000000000560000-0x0000000000566000-memory.dmp

    Filesize

    24KB

  • memory/3200-2-0x0000000002230000-0x0000000002236000-memory.dmp

    Filesize

    24KB