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Ryuk story and detections - #899

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josehelps merged 17 commits into
developfrom
ryuk-story
Nov 9, 2020
Merged

josehelps merged 17 commits into
developfrom
ryuk-story

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@josehelps

@josehelps josehelps commented Nov 6, 2020 •

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adds a new story:

  • Ryuk Ransomware

adds new detections:

  • Ryuk Test Files Detected
  • Windows Security Account Manager Stopped
  • Windows DisableAntiSpyware Registry
  • Windows connhost exe started forcefully

improved validate.py by adding additional logging

@josehelps
josehelps requested a review from rosplk November 6, 2020 17:35
@josehelps josehelps changed the title ryuk story and detections Ryuk story and detections Nov 7, 2020
@josehelps josehelps mentioned this pull request Nov 9, 2020

@rosplk rosplk left a comment

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Looks good to The search looks for files that contain the key word Ryuk under any folder in the C drive, which is consistent with Samsam ##changeto'ryuk'## propagation. how_to_implement: You must be ingesting data that records the file-system activity' this needs to be fixed this is Ryuk Test Files Detected

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LGTM, small comment.

Comment thread bin/generate.py Outdated
output_path = path.join(OUTPUT_PATH, file_path)
if response_task['search'].find(">") is not -1:
if response_task['search'].find(">") != -1:
response_task['search']= response_task['search'].replace(">",">")

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I think the "if"'s here are redundant.

response_task['search']= response_task['search'].replace(">",">")

is going to replace ">" if it exists and leave it untouched if it doesn't.

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oh good point 😄 fixing.

@josehelps
josehelps requested a review from rosplk November 9, 2020 22:32
rosplk
rosplk previously approved these changes Nov 9, 2020
@josehelps
josehelps merged commit c67d2e5 into develop Nov 9, 2020
@delete-merged-branch
delete-merged-branch Bot deleted the ryuk-story branch November 9, 2020 22:45
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3 participants