Analysis

  • max time kernel
    142s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05-06-2024 21:05

General

  • Target

    2024-06-05_8a4b49ead004283b8c8f5324dbf93189_ryuk.exe

  • Size

    664KB

  • MD5

    8a4b49ead004283b8c8f5324dbf93189

  • SHA1

    8efe54837faf263d1f336d3b4da24cf497f614bd

  • SHA256

    a68fac4e3592ccf103c7db6d5302634233f4fce7a4341f0696fe52512d401512

  • SHA512

    571950c149095cff7fff2e61d5fb68756e7946b8d189307790b02b1a19c94f978b405cbe68637b4a811fcdfc76508e6d4cdb308d91e28b51193bb12a662fc081

  • SSDEEP

    12288:Ls9YrzrSoCU5qJSr1eJXU3L0amgJmw6gqAHHUzTshcvNQC:frSoCU5qJSr1eJXNhgJmw6gqmeTZvNj

Malware Config

Signatures

  • Azov

    A wiper seeking only damage, first seen in 2022.

  • Renames multiple (158) files with added filename extension

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

  • 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\2024-06-05_8a4b49ead004283b8c8f5324dbf93189_ryuk.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-05_8a4b49ead004283b8c8f5324dbf93189_ryuk.exe"
    1⤵
    • Adds Run key to start application
    • Enumerates connected drives
    • Drops file in Program Files directory
    PID:1448
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1340 --field-trial-handle=2356,i,13261194862334667799,7441241219475888176,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:3348

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Program Files\7-Zip\RESTORE_FILES.txt

      Filesize

      2KB

      MD5

      78ede93114e65f9160fd03d3357c56e6

      SHA1

      88d531b101e57655f1d0d26c6b3257aa2468d460

      SHA256

      c97412fbf88da8f91099a52888dea4c3f222cd95af3e681e3271cbca8b6b7bb5

      SHA512

      074a4c741273902ccacb6f573b96d8accedb2ee405dbd04350cdbf54d180c1fd577a4e90c2aae26bf72f3782403f4494db6e3501a04cfd9d7d81a6bc14884b9d

    • memory/1448-0-0x00000169421F0000-0x00000169421F4000-memory.dmp

      Filesize

      16KB

    • memory/1448-2-0x00007FF6D6910000-0x00007FF6D69A7000-memory.dmp

      Filesize

      604KB

    • memory/1448-3-0x00000169421E0000-0x00000169421E5000-memory.dmp

      Filesize

      20KB

    • memory/1448-9-0x00000169421E0000-0x00000169421E5000-memory.dmp

      Filesize

      20KB

    • memory/1448-8-0x00000169421F0000-0x00000169421F4000-memory.dmp

      Filesize

      16KB

    • memory/1448-7-0x00000169421E0000-0x00000169421E5000-memory.dmp

      Filesize

      20KB

    • memory/1448-6-0x0000016940BA0000-0x0000016940BA7000-memory.dmp

      Filesize

      28KB