18 lines
1.1 KiB
Text
18 lines
1.1 KiB
Text
rule Mal_Infostealer_PowerShell_Jupyter_Updated_Samples
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{
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meta:
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description = "Detects Jupter powershell via common strings"
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reference = "https://blogs.blackberry.com/en/2022/01/threat-thursday-jupyter-infostealer-is-a-master-of-disguise"
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author = "BlackBerry Threat Research Team"
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date = "2021-11-04"
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license = "This Yara rule is provided under the Apache License 2.0 (https://www.apache.org/licenses/LICENSE-2.0) and open to any user or organization, as long as you use it under this license and ensure originator credit in any derivative to The BlackBerry Research & Intelligence Team"
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strings:
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$c1 = /\.[T|t][O|o][L|l][O|o][W|w][E|e][R|r]\(\)\)?;[I|i][E|e][X|x]/
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$c2 = "get-random -minimum 50000 -maximum 200000" nocase
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$c3 = "ReaDALlBYTES" nocase
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$c4 = /createshortcut\(\$env\:appdata\+'\\m\'\+\'icr\'\+\'oso\'\+\'ft\'\+\'\\w\'\+\'ind\'\+\'ow\'\+\'s\\\'\+\'st\'\+\'art\'\+\' me\'\+\'nu\'\+\'\\pr\'\+\'ogr\'\+\'ams\\\'\+\'st\'\+\'art\'\+\'up\'\+\'\\.{29}\.lnk\'\)/ nocase
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condition:
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all of ($c*)
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}
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