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Analysis

  • max time kernel
    121s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    11/06/2024, 07:27

General

  • Target

    2024-06-11_b2aadc9acbcbee48a4fafdd5f129aecc_ryuk.exe

  • Size

    664KB

  • MD5

    b2aadc9acbcbee48a4fafdd5f129aecc

  • SHA1

    21b80f6fd721c7f21bbf31a7540d7937309b4b80

  • SHA256

    019819ed42ee5e300f592a30636289ed8615f3256fa70a30b19323f02f382a6d

  • SHA512

    21e5fa26b3b955cb1ac2dee0bb8e1a8cb4fdc8429f0130785e631f0b719073a4694572147eab764491321a6a18eec50030d6b73f00e64d9791bd45ca29bfe274

  • SSDEEP

    12288:ns9fjVDSoCU5qJSr1eg0U+h5csWGphrgwALHUzTshvB6ioMjdgJ:ghSoCU5qJSr1eg0vJWGphrgwSeTsUioJ

Malware Config

Signatures

  • Azov

    A wiper seeking only damage, first seen in 2022.

  • Renames multiple (1800) 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_b2aadc9acbcbee48a4fafdd5f129aecc_ryuk.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-11_b2aadc9acbcbee48a4fafdd5f129aecc_ryuk.exe"
    1⤵
    • Adds Run key to start application
    • Enumerates connected drives
    • Drops file in Program Files directory
    PID:2292

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    2KB

    MD5

    78ede93114e65f9160fd03d3357c56e6

    SHA1

    88d531b101e57655f1d0d26c6b3257aa2468d460

    SHA256

    c97412fbf88da8f91099a52888dea4c3f222cd95af3e681e3271cbca8b6b7bb5

    SHA512

    074a4c741273902ccacb6f573b96d8accedb2ee405dbd04350cdbf54d180c1fd577a4e90c2aae26bf72f3782403f4494db6e3501a04cfd9d7d81a6bc14884b9d

  • memory/2292-4-0x000000013F0B0000-0x000000013F147000-memory.dmp

    Filesize

    604KB

  • memory/2292-2-0x0000000000060000-0x0000000000067000-memory.dmp

    Filesize

    28KB

  • memory/2292-0-0x0000000000090000-0x0000000000094000-memory.dmp

    Filesize

    16KB

  • memory/2292-13-0x0000000000080000-0x0000000000085000-memory.dmp

    Filesize

    20KB

  • memory/2292-11-0x0000000000080000-0x0000000000085000-memory.dmp

    Filesize

    20KB

  • memory/2292-9-0x0000000000090000-0x0000000000094000-memory.dmp

    Filesize

    16KB

  • memory/2292-8-0x0000000000080000-0x0000000000085000-memory.dmp

    Filesize

    20KB