Analysis

  • max time kernel
    147s
  • max time network
    155s
  • 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 14:50

General

  • Target

    2024-06-11_33c3889ae6b99f79dd0427113d284974_ryuk.exe

  • Size

    664KB

  • MD5

    33c3889ae6b99f79dd0427113d284974

  • SHA1

    cadda4b56c8a8bf270babb7b9fffecd860a83130

  • SHA256

    2223f682e4dd3bbf82bfa2334026041398df0e96ee254a5f21f667094fd83b67

  • SHA512

    41fd3a0ab5d7e3b0f661c8ae85a4bb8113166e834568aa5f3af7fe40816732b6649c8969c5fdee83bd5e29c20327a26a5060f7814dc6d755af328348118d23d9

  • SSDEEP

    12288:8s9cUZSSoCU5qJSr1eSdUMPEC1J51cntg2A9HUzTshsI057wiYDDbj:cpSoCU5qJSr1eSd6CJ5Ontg2IeTDlWDb

Malware Config

Signatures

  • Azov

    A wiper seeking only damage, first seen in 2022.

  • Renames multiple (542) 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_33c3889ae6b99f79dd0427113d284974_ryuk.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-11_33c3889ae6b99f79dd0427113d284974_ryuk.exe"
    1⤵
    • Adds Run key to start application
    • Enumerates connected drives
    • Drops file in Program Files directory
    PID:3800

Network

MITRE ATT&CK Matrix ATT&CK v13

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

Modify Registry

1
T1112

Credential Access

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Query Registry

1
T1012

Peripheral Device Discovery

1
T1120

System Information Discovery

1
T1082

Collection

Data from Local System

1
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

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

    2KB

    MD5

    78ede93114e65f9160fd03d3357c56e6

    SHA1

    88d531b101e57655f1d0d26c6b3257aa2468d460

    SHA256

    c97412fbf88da8f91099a52888dea4c3f222cd95af3e681e3271cbca8b6b7bb5

    SHA512

    074a4c741273902ccacb6f573b96d8accedb2ee405dbd04350cdbf54d180c1fd577a4e90c2aae26bf72f3782403f4494db6e3501a04cfd9d7d81a6bc14884b9d

  • memory/3800-3-0x000001C840F00000-0x000001C840F05000-memory.dmp
    Filesize

    20KB

  • memory/3800-0-0x000001C840F10000-0x000001C840F14000-memory.dmp
    Filesize

    16KB

  • memory/3800-12-0x000001C840F00000-0x000001C840F05000-memory.dmp
    Filesize

    20KB

  • memory/3800-11-0x000001C840F10000-0x000001C840F14000-memory.dmp
    Filesize

    16KB

  • memory/3800-9-0x000001C840F00000-0x000001C840F05000-memory.dmp
    Filesize

    20KB

  • memory/3800-7-0x000001C840EE0000-0x000001C840EE7000-memory.dmp
    Filesize

    28KB

  • memory/3800-2-0x00007FF6F1400000-0x00007FF6F1497000-memory.dmp
    Filesize

    604KB