Analysis

  • max time kernel
    52s
  • max time network
    54s
  • 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, 10:46

General

  • Target
    2024-06-11_1c7f9f6ab3eb20e3707f6966e2bd532a_ryuk.exe
  • Size 664KB
  • Sample240611-mtzeqstglc
  • SHA256 d78f85ffd6c6b64c5fb2b25a98d5956c0cff3d09f6940cc6547e6decd6b99dcd
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Azov

    A wiper seeking only damage, first seen in 2022.

  • Renames multiple (591) 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_1c7f9f6ab3eb20e3707f6966e2bd532a_ryuk.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-11_1c7f9f6ab3eb20e3707f6966e2bd532a_ryuk.exe"
    1⤵
    • Adds Run key to start application
    • Enumerates connected drives
    • Drops file in Program Files directory
    PID:1844

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/1844-3-0x0000025782860000-0x0000025782865000-memory.dmp

        memory/1844-0-0x0000025782870000-0x0000025782874000-memory.dmp

        memory/1844-9-0x0000025782870000-0x0000025782874000-memory.dmp

        memory/1844-8-0x0000025782860000-0x0000025782865000-memory.dmp

        memory/1844-7-0x0000025782740000-0x0000025782747000-memory.dmp

        memory/1844-12-0x0000025782860000-0x0000025782865000-memory.dmp

        memory/1844-2-0x00007FF727F10000-0x00007FF727FA7000-memory.dmp