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16 lines
664 B
Plaintext
16 lines
664 B
Plaintext
rule MAL_WshRAT_Dotnet_Packer_Feb21 {
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meta:
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description = "Yara Rule for WSH rat .NET packer of February 2021 "
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author = "Yoroi Malware ZLab"
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date = "2021-03-09"
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reference = "https://yoroi.company/research/threatening-within-budget-how-wsh-rat-is-abused-by-cyber-crooks/"
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strings:
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$a1 = { BE DD 60 8C 34 49 9A 54 D2 40 }
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$a2 = { 1D D7 24 22 47 A6 B1 A5 }
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$a3 = { 13 30 03 00 07 00 00 00 01 }
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$a4 = { 11 02 03 7D 78 00 00 04 2A }
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$a5 = { A8 8A F4 C8 61 2B CA 07 }
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$a6 = { 15 AE 5E AB 5A 20 FE B5 56 B4 61 2B BB 06 2A}
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condition:
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uint16(0) == 0x5A4D and 3 of them
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} |