Analysis

  • max time kernel
    147s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11/06/2024, 15:01

General

  • Target
    2024-06-11_8eec352a0cfbacce8eca2b9b5cb06783_ryuk.exe
  • Size 664KB
  • Sample240611-sd87ws1dnb
  • SHA256 45f38b5f9a1778fc877d9e8781ed206525a00d9e6d9d81e3706ea72d66f16484
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Azov

    A wiper seeking only damage, first seen in 2022.

  • Renames multiple (598) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates connected drives 3 TTPs 23 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in Program Files directory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-06-11_8eec352a0cfbacce8eca2b9b5cb06783_ryuk.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-11_8eec352a0cfbacce8eca2b9b5cb06783_ryuk.exe"
    1⤵
    • Adds Run key to start application
    • Enumerates connected drives
    • Drops file in Program Files directory
    PID:3020

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        RESTORE_FILES.txt

        • Path C:\Program Files\7-Zip\Lang\RESTORE_FILES.txt
        • Size 2KB
        • SHA256 c97412fbf88da8f91099a52888dea4c3f222cd95af3e681e3271cbca8b6b7bb5
        • MD5 SHA1 SHA512

        memory/3020-0-0x0000013019AE0000-0x0000013019AE4000-memory.dmp

        memory/3020-3-0x0000013019AD0000-0x0000013019AD5000-memory.dmp

        memory/3020-6-0x0000013019AE0000-0x0000013019AE4000-memory.dmp

        memory/3020-2-0x00007FF75A740000-0x00007FF75A7D7000-memory.dmp

        memory/3020-13-0x0000013019AD0000-0x0000013019AD5000-memory.dmp

        memory/3020-12-0x0000013019AD0000-0x0000013019AD5000-memory.dmp

        memory/3020-10-0x0000013019AB0000-0x0000013019AB7000-memory.dmp