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The Yara scanner is revamped to perform file and memory scanning triggered by multiple signals. Aside from the basic process creation and image loading, the scan is initiated when the PE file is dropped in the file system, or when the ADS (Alternate Data Stream) is created. Memory scan is triggered under suspicious memory allocation or section mapping. Lastly, when the registry binary value is set, the scan is also performed on the binary blob.
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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -1,21 +1,12 @@ | ||
rule Notepad : notepad | ||
rule Np : T1 T2 | ||
{ | ||
meta: | ||
severity = "Normal" | ||
severity = 50 | ||
date = "2016-07" | ||
threat_name = "Notepad.Shell" | ||
id = "babf9101-1e6e-4268-a530-e99e2c905b0d" | ||
strings: | ||
$c0 = "Notepad" fullword ascii | ||
$c1 = "Notepad" fullword ascii | ||
condition: | ||
$c0 | ||
$c1 | ||
} | ||
|
||
rule NotepadCompany | ||
{ | ||
meta: | ||
severity = "Normal" | ||
date = "2016-07" | ||
strings: | ||
$c0 = "Microsoft" fullword ascii | ||
condition: | ||
$c0 | ||
} |
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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,12 @@ | ||
rule Regedit : T1 | ||
{ | ||
meta: | ||
severity = 50 | ||
date = "2016-07" | ||
threat_name = "Regedit" | ||
id = "1abf9101-1e6e-4268-a530-e99e2c905b0d" | ||
strings: | ||
$c1 = "Regedit" nocase fullword ascii | ||
condition: | ||
$c1 | ||
} |
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