45 lines
1.2 KiB
Text
45 lines
1.2 KiB
Text
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import "pe"
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rule Mal_Win32_Chaos_Builder_Ransomware_2022
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{
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meta:
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description = "Detects Chaos Ransomware Builder"
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reference = "https://blogs.blackberry.com/en/2022/05/yashma-ransomware-tracing-the-chaos-family-tree"
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author = "BlackBerry Threat Research"
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date = "2022-05-10"
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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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$s0 = "1qw0ll8p9m8uezhqhyd" ascii wide
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$s1 = "Chaos Ransomware Builder" ascii wide
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$s2 = "payloadFutureName" ascii wide
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$s3 = "read_it.txt" ascii wide
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$s4 = "encryptedFileExtension" ascii wide
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$x0 = "1098576" ascii wide
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$x1 = "2197152" ascii wide
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condition:
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//PE File
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uint16(0) == 0x5a4d and
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//All strings
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((all of ($s*)) and (1 of ($x*)))
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}
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