mirror of
https://github.com/Yara-Rules/rules
synced 2026-06-08 12:58:40 +00:00
Michal Ambroz
40 lines
1.1 KiB
Plaintext
40 lines
1.1 KiB
Plaintext
/*
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This Yara ruleset is under the GNU-GPLv2 license (http://www.gnu.org/licenses/gpl-2.0.html) and
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open to any user or organization, as long as you use it under this license.
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*/
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rule with_images : mail {
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meta:
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author = "Antonio Sanchez <asanchez@hispasec.com>"
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reference = "http://laboratorio.blogs.hispasec.com/"
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description = "Rule to detect the presence of an or several images"
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strings:
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$eml_01 = "From:"
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$eml_02 = "To:"
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$eml_03 = "Subject:"
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$img_a = ".jpg" nocase
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$img_b = ".png" nocase
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$img_c = ".bmp" nocase
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condition:
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all of ( $eml_* ) and
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any of ( $img_* )
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}
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rule without_images : mail {
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meta:
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author = "Antonio Sanchez <asanchez@hispasec.com>"
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reference = "http://laboratorio.blogs.hispasec.com/"
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description = "Rule to detect the no presence of any image"
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strings:
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$eml_01 = "From:"
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$eml_02 = "To:"
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$eml_03 = "Subject:"
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$a = ".jpg" nocase
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$b = ".png" nocase
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$c = ".bmp" nocase
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condition:
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all of ( $eml_* ) and
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not $a and not $b and not $c
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}
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