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Analysis

  • max time kernel
    120s
  • max time network
    133s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    11/01/2024, 05:59

General

  • Target

    2024-01-10_fda3b583f9ce8e11896b603a1fbd2b6e_ryuk.exe

  • Size

    1.7MB

  • MD5

    fda3b583f9ce8e11896b603a1fbd2b6e

  • SHA1

    8186d3d9599f9fab538ce25b0e86d4d15ab2f64c

  • SHA256

    42c884f1595cdf0b00760519c9a63c404f628f8e773e3173f2a47e4393452b1a

  • SHA512

    80fa14a42897f9120fc315743d8c2ece59577f65ea4a38bce7b015b4997213b0f71e23c76ab6211216a3cfbd8a81c38d3bf3172ca80c6359e32e3dd04f64f329

  • SSDEEP

    49152:T4f65cTlG8mMHcn3obb0P8/snji6attJM:TSG8mM8wEnW6at

Score
5/10

Malware Config

Signatures

  • Drops file in System32 directory 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-01-10_fda3b583f9ce8e11896b603a1fbd2b6e_ryuk.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-10_fda3b583f9ce8e11896b603a1fbd2b6e_ryuk.exe"
    1⤵
    • Drops file in System32 directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2152
    • C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -u -p 2152 -s 332
      2⤵
        PID:2404

    Network

    MITRE ATT&CK Matrix

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/2152-0-0x00000000003D0000-0x0000000000430000-memory.dmp

      Filesize

      384KB

    • memory/2152-2-0x0000000140000000-0x00000001401CF000-memory.dmp

      Filesize

      1.8MB

    • memory/2152-8-0x00000000003D0000-0x0000000000430000-memory.dmp

      Filesize

      384KB

    • memory/2152-12-0x0000000140000000-0x00000001401CF000-memory.dmp

      Filesize

      1.8MB