Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    03/04/2024, 10:29

General

  • Target

    2024-04-03_ea4d1d81f1dda4f8b62d38affc1fab85_ryuk.exe

  • Size

    1.8MB

  • MD5

    ea4d1d81f1dda4f8b62d38affc1fab85

  • SHA1

    00203d55c8158e7ac6747166cd1137fb17672d3f

  • SHA256

    1e62eb0919dd9f98dde874657a820312e5f6d522fdf942328c39070273f16af5

  • SHA512

    ff48a6ceb16472a678e1b2ce3a82027f6bdcce24cd733814ada900d7a97401ad85c7e70cc7b3dbc21f14a3b38d0d50e8f5f8764037fdc2b39d7dd3642a1c5d04

  • SSDEEP

    49152:bKfuPS3ELNjV7yZxEfOfOgwf0rDmg27RnWGj:om92Zxwg7D527BWG

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_ea4d1d81f1dda4f8b62d38affc1fab85_ryuk.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-03_ea4d1d81f1dda4f8b62d38affc1fab85_ryuk.exe"
    1⤵
    • Drops file in System32 directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2172
    • C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -u -p 2172 -s 328
      2⤵
        PID:2812
    • C:\Windows\System32\alg.exe
      C:\Windows\System32\alg.exe
      1⤵
      • Executes dropped EXE
      • Drops file in System32 directory
      PID:2536

    Network

          MITRE ATT&CK Matrix

          Replay Monitor

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          Downloads

          • \Windows\System32\alg.exe

            Filesize

            1.5MB

            MD5

            8616ae5540f5d1a74b1d64364a21efb4

            SHA1

            ab3c5d6989e69a432d68454fc6cc1b129e06fe05

            SHA256

            178665e57ebe9fb603b326547b928a79fcf62762e9065247343a0b343f47d400

            SHA512

            183518df6d6badc5c32f04dd2db89532508a53e7f6651c3e8757d187e963ea00e678b62ea1e10b4cfd9a6252b2ebf540a7a899195ef58ec42307dde12fb241b6

          • memory/2172-0-0x0000000140000000-0x00000001401DF000-memory.dmp

            Filesize

            1.9MB

          • memory/2172-1-0x0000000001BF0000-0x0000000001C50000-memory.dmp

            Filesize

            384KB

          • memory/2172-7-0x0000000001BF0000-0x0000000001C50000-memory.dmp

            Filesize

            384KB

          • memory/2172-8-0x0000000001BF0000-0x0000000001C50000-memory.dmp

            Filesize

            384KB

          • memory/2172-25-0x0000000140000000-0x00000001401DF000-memory.dmp

            Filesize

            1.9MB

          • memory/2536-14-0x0000000100000000-0x0000000100184000-memory.dmp

            Filesize

            1.5MB

          • memory/2536-15-0x0000000000860000-0x00000000008C0000-memory.dmp

            Filesize

            384KB

          • memory/2536-21-0x0000000000860000-0x00000000008C0000-memory.dmp

            Filesize

            384KB

          • memory/2536-22-0x0000000000860000-0x00000000008C0000-memory.dmp

            Filesize

            384KB

          • memory/2536-26-0x0000000100000000-0x0000000100184000-memory.dmp

            Filesize

            1.5MB