mandiant / mandiant/capa-rules
parse-credit-card-information -> mimikatz.exe_:0x444E02
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Description
[parse-credit-card-information](https://github.com/mandiant/capa-rules/blob/7128cdbdd1a8c42cdaa1ddcf35a19803ecac20f0/collection/credit-card/parse-credit-card-information.yml) match reported for mimikatz.exe_:0x444E02
I've noticed FPs for this rule for other internal binaries as well. The character checks detected by this rule (`=`, `?`, etc.) are also found in common processing for things like URIs, etc..
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start with collection/credit-card/parse-credit-card-information.yml and inspect the reported match at mimikatz.exe_:0x444E02. Compare the rule's character checks with the URI-like processing described in the issue and determine how false positives should be reduced without losing genuine matches. Done means the rule no longer reports the cited false positive and remains validated against relevant examples.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- yaml
- Domain
- reverse-engineering, security
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100