{"Id":"6fe10a55-7fb8-4a9d-9ebc-1b27b6e5b833","Tags":["prokiller64.sys"],"Verified":"TRUE","Author":"Guus Verbeek","Created":"2023-05-07","MitreID":"T1068","Category":"malicious","Commands":{"Command":"sc.exe create prokiller64.sys binPath=C:\\windows\\temp\\prokiller64.sys type=kernel && sc.exe start prokiller64.sys","Description":"Signed POORTRY Samples","OperatingSystem":"Windows 10","Privileges":"kernel","Usecase":"Elevate privileges"},"Resources":["https://www.mandiant.com/resources/blog/hunting-attestation-signed-malware","https://news.sophos.com/en-us/2022/12/13/signed-driver-malware-moves-up-the-software-trust-chain/"],"Detection":[],"Acknowledgement":{"Handle":"","Person":""},"KnownVulnerableSamples":[{"Authentihash":{"MD5":"4252d83e18ad41f0cea7ac168218d95b","SHA1":"cf9cb05c9b725efca68c4b7d6f53c8e233217ac4","SHA256":"cd66e893300e7e59a749fe4e1b1706f8ccb5ae140254def9f5a614648e2da36f"},"Company":"","Copyright":"","CreationTimestamp":"2022-06-02 06:09:08","Date":"","Description":"","ExportedFunctions":"","FileVersion":"","Filename":"prokiller64.sys","ImportedFunctions":["rand","srand","RtlInitUnicodeString","RtlGetVersion","KeDelayExecutionThread","ExAllocatePoolWithTag","ExFreePoolWithTag","ExSystemTimeToLocalTime","MmGetSystemRoutineAddress","IofCompleteRequest","IoCreateDevice","IoCreateSymbolicLink","IoDeleteDevice","IoGetCurrentProcess","ObReferenceObjectByHandleWithTag","ObfDereferenceObject","ObfDereferenceObjectWithTag","MmIsAddressValid","PsGetProcessExitStatus","PsIsThreadTerminating","PsLookupProcessByProcessId","PsLookupThreadByThreadId","PsGetThreadProcess","PsIsSystemThread","ObOpenObjectByPointerWithTag","KeBugCheckEx"],"Imports":["ntoskrnl.exe"],"InternalName":"","MD5":"10f3679384a03cb487bda9621ceb5f90","MachineType":"AMD64","MagicHeader":"50 45 0 0","OriginalFilename":"","Product":"","ProductVersion":"","Publisher":"","RichPEHeaderHash":{"MD5":"a7d4acb55095eb7efa7945ef805fcf8b","SHA1":"10103bfe4f9a5b22c45d64354f88be415249f384","SHA256":"58bcb1d3215317fc95d1b8ddef6945aead4de70049db273b0d4a82a7e22b38d8"},"SHA1":"31cc8718894d6e6ce8c132f68b8caaba39b5ba7a","SHA256":"0440ef40c46fdd2b5d86e7feef8577a8591de862cfd7928cdbcc8f47b8fa3ffc","Sections":{".text":{"Entropy":5.867789766876108,"Virtual Size":"0x16a8"},".rdata":{"Entropy":3.699262445440139,"Virtual Size":"0x5b0"},".data":{"Entropy":0.6050836155077387,"Virtual Size":"0x110"},".pdata":{"Entropy":3.6860326615335524,"Virtual Size":"0x15c"},"INIT":{"Entropy":5.264965850546818,"Virtual Size":"0x3ee"},".reloc":{"Entropy":3.566428031846024,"Virtual Size":"0x20"}},"Signature":"","Signatures":[{"CertificatesInfo":"","SignerInfo":"","Certificates":[{"Subject":"C=CN, ST=guangdong, L=zhuhai, O=Zhuhai liancheng Technology Co., Ltd., OU=Digital ID Class 3 , Microsoft Software Validation v2, CN=Zhuhai liancheng Technology Co., Ltd.","ValidFrom":"2013-02-04 00:00:00","ValidTo":"2014-02-04 23:59:59","Signature":"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","SignatureAlgorithmOID":"1.2.840.113549.1.1.5","IsCertificateAuthority":false,"SerialNumber":"627dfdf73a1455de5143a270799e6b7b","Version":3,"CertificateType":"Leaf (Code Signing)","IsCodeSigning":true,"IsCA":false,"TBS":{"MD5":"b91ec3270e80aa93214c42d1eed66d36","SHA1":"c27a40cbc754d2bb1f7b872a5a9fd385ff1c2b2f","SHA256":"7b4a9879162ce64e75cca2bcc675be06dacb6c9eeae4df6c929080b4db819cd4","SHA384":"394fa6e52375f53d18f79f1abb7b26b02bbb000784279547bd81d16c18fabe1b8156b64ad1c356e85e1829fa2ab3f870"}},{"Subject":"C=US, O=VeriSign, Inc., OU=VeriSign Trust Network, OU=(c) 2006 VeriSign, Inc. , For authorized use only, CN=VeriSign Class 3 Public Primary Certification Authority , G5","ValidFrom":"2011-02-22 19:25:17","ValidTo":"2021-02-22 19:35:17","Signature":"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","SignatureAlgorithmOID":"1.2.840.113549.1.1.5","IsCertificateAuthority":true,"SerialNumber":"611993e400000000001c","Version":3,"CertificateType":"CA","IsCodeSigning":false,"IsCA":true,"TBS":{"MD5":"78a717e082dcc1cda3458d917e677d14","SHA1":"4a872e0e51f9b304469cd1dedb496ee9b8b983a4","SHA256":"317fa1d234ebc49040ebc5e8746f8997471496051b185a91bdd9dfbb23fab5f8","SHA384":"b71052da4eb9157c8c1a5d7f55df19d69b9128598b72fcca608e5b7cc7d64c43c5504b9c86355a6dc22ee40c88cc385c"}},{"Subject":"C=US, O=VeriSign, Inc., OU=VeriSign Trust Network, OU=Terms of use at https://www.verisign.com/rpa (c)10, CN=VeriSign Class 3 Code Signing 2010 CA","ValidFrom":"2010-02-08 00:00:00","ValidTo":"2020-02-07 23:59:59","Signature":"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","SignatureAlgorithmOID":"1.2.840.113549.1.1.5","IsCertificateAuthority":true,"SerialNumber":"5200e5aa2556fc1a86ed96c9d44b33c7","Version":3,"CertificateType":"CA","IsCodeSigning":true,"IsCA":true,"TBS":{"MD5":"b30c31a572b0409383ed3fbe17e56e81","SHA1":"4843a82ed3b1f2bfbee9671960e1940c942f688d","SHA256":"03cda47a6e654ed85d932714fc09ce4874600eda29ec6628cfbaeb155cab78c9","SHA384":"bbda8407c4f9fc4e54d772f1c7fb9d30bc97e1f97ecd51c443063d1fa0644e266328781776cd5c44896c457c75f4d7da"}}],"Signer":[{"SerialNumber":"627dfdf73a1455de5143a270799e6b7b","Issuer":"C=US, O=VeriSign, Inc., OU=VeriSign Trust Network, OU=Terms of use at https://www.verisign.com/rpa (c)10, CN=VeriSign Class 3 Code Signing 2010 CA","Version":1}]}],"Imphash":"832219eb71b8bdb771f1d29d27b0acf4","LoadsDespiteHVCI":"TRUE"}]}