Analysis

  • max time kernel
    150s
  • max time network
    11s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    18-01-2021 11:45

General

  • Target

    88b1b4966650de59cef20c340b28739c52dc9ead91d9959a338a8e531ad38335.exe

  • Size

    575KB

  • MD5

    6cad2f7dc809b9353a31753a438aef4e

  • SHA1

    459d816bb020f5da8257076a36d0ffd1f1f02d76

  • SHA256

    88b1b4966650de59cef20c340b28739c52dc9ead91d9959a338a8e531ad38335

  • SHA512

    a67367990452bf21b7c0d0682c598422c78a5ed455a5d5e684d8fabb43366b0e9f9cd579a5f18123f6b1f97945f789904929838d1d893b70f450bfeafb243bb8

Malware Config

Signatures

  • Ryuk

    Ransomware distributed via existing botnets, often Trickbot or Emotet.

  • Modifies file permissions 1 TTPs 2 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\88b1b4966650de59cef20c340b28739c52dc9ead91d9959a338a8e531ad38335.exe
    "C:\Users\Admin\AppData\Local\Temp\88b1b4966650de59cef20c340b28739c52dc9ead91d9959a338a8e531ad38335.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:296
    • C:\Windows\SysWOW64\icacls.exe
      icacls "C:\*" /grant Everyone:F /T /C /Q
      2⤵
      • Modifies file permissions
      PID:1236
    • C:\Windows\SysWOW64\icacls.exe
      icacls "D:\*" /grant Everyone:F /T /C /Q
      2⤵
      • Modifies file permissions
      PID:880

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/296-2-0x0000000076381000-0x0000000076383000-memory.dmp

    Filesize

    8KB