Analysis

  • max time kernel
    144s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240319-en
  • resource tags

    arch:x64arch:x86image:win7-20240319-enlocale:en-usos:windows7-x64system
  • submitted
    03/04/2024, 10:36

General

  • Target

    2024-04-03_fa8e1be240924e506e79d468a917d168_ryuk.exe

  • Size

    1.8MB

  • MD5

    fa8e1be240924e506e79d468a917d168

  • SHA1

    6cf82a7c8abafcbaa63b070f3da3ad5ac3c1ac73

  • SHA256

    9dc0426d14aec9386968d8db3403a824c15a0767f18587c7053a0dbf80bb46fa

  • SHA512

    d2d414dee4a19c92b6bb7a75dc61f3a283c7a505789df3333cc013f27b3c96edad96afb7b4e5cd1d63fe08619ec8d4d24fcfa02bd36c847e9edfaeb9b0557f9c

  • SSDEEP

    49152:CKfuPS3ELNjV7IZxEfOflgwf04gDUYmvFur31yAipQCtXxc0H:Fm9sZxjghU7dG1yfpVBlH

Score
7/10

Malware Config

Signatures

  • Executes dropped EXE 2 IoCs
  • Drops file in System32 directory 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-04-03_fa8e1be240924e506e79d468a917d168_ryuk.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-03_fa8e1be240924e506e79d468a917d168_ryuk.exe"
    1⤵
    • Drops file in System32 directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2144
    • C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -u -p 2144 -s 336
      2⤵
        PID:2892
    • C:\Windows\System32\alg.exe
      C:\Windows\System32\alg.exe
      1⤵
      • Executes dropped EXE
      • Drops file in System32 directory
      PID:2156

    Network

          MITRE ATT&CK Matrix

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • \Windows\System32\alg.exe

            Filesize

            644KB

            MD5

            94b3710d448752123cc3d33f809d0ee9

            SHA1

            24e55f4e4380c69db0b93e33386d56ab2becf9dc

            SHA256

            c4a6af8472f0c21f7fa675277b6c1fac68ac905e20768855532307093447963a

            SHA512

            a853c8ff4dbee7bb31d550685d525babf94ec6a4734aef66d1bda925dd7f3bd339391a0e8691a6729cb4a3294248efda221b13635a0d5e7493b642fb6df0a504

          • memory/2144-1-0x0000000140000000-0x00000001401DF000-memory.dmp

            Filesize

            1.9MB

          • memory/2144-0-0x0000000001C10000-0x0000000001C70000-memory.dmp

            Filesize

            384KB

          • memory/2144-7-0x0000000001C10000-0x0000000001C70000-memory.dmp

            Filesize

            384KB

          • memory/2144-8-0x0000000001C10000-0x0000000001C70000-memory.dmp

            Filesize

            384KB

          • memory/2144-24-0x0000000140000000-0x00000001401DF000-memory.dmp

            Filesize

            1.9MB

          • memory/2156-14-0x0000000100000000-0x00000001000A4000-memory.dmp

            Filesize

            656KB

          • memory/2156-15-0x00000000002B0000-0x0000000000310000-memory.dmp

            Filesize

            384KB

          • memory/2156-21-0x00000000002B0000-0x0000000000310000-memory.dmp

            Filesize

            384KB

          • memory/2156-25-0x0000000100000000-0x00000001000A4000-memory.dmp

            Filesize

            656KB