44 lines
2 KiB
Text
44 lines
2 KiB
Text
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rule Mal_Infostealer_MSI_EXE_Jupyter_Certificate
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{
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meta:
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description = "Detects Jupter by certificate"
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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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// MSI Installer
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$msi = { D0 CF 11 E0 A1 B1 1A E1 }
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// MSI Strings
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$a1 = "EMCO MSI Package Builder"
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// PowerShell execution strings
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$b1 = "powershell-ExecutionPolicy bypass -command \"iex([\\[]IO.File[\\]]::ReadAllText('[CurrentUserProfileFolder]" nocase
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$b2 = "powershell-ep bypass -file \"[AppDataFolder]" nocase
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$b3 = /powershell-ep bypass -windowstyle hidden -command \"\$xp=\'\[AppDataFolder\].{0,256}\.{0,256}\'/ nocase
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$b4 = /powershell-ep bypass -windowstyle hidden -command \"\$p=\'\[AppDataFolder\].{0,256}\.{0,256}\'/ nocase
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$b5 = /powershell-ExecutionPolicy bypass -command \"iex\(\[\\\[\]IO.File\[\\\]\]::ReadAllText\(\'\[CurrentUserProfileFolder\].{1,256}\..{1,256}\'\)\)/ nocase
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// Certificate Name
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$c1 = "OOO ENDI"
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$c2 = "OOO MVS"
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$c3 = "OOO LEVELAP"
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$c4 = "Soto Manufacturing SRL"
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$c5 = "Decapolis Consulting Inc."
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// Co-signers
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$f1 = "SSL.com EV Root Certification Authority RSA R2"
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$f2 = "SSL.com EV Code Signing Intermediate CA RSA R3"
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$f3 = "DigiCert Trusted G4 Code Signing RSA4096 SHA384 2021 CA1"
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$f4 = "DigiCert Trusted Root G40"
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condition:
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($msi at 0 or uint16(0) == 0x5a4d) and
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all of ($a*) and
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1 of ($b*) and
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1 of ($c*) and
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2 of ($f*)
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}
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