{"Id":"7cc0a40d-7902-4400-9fc4-0070053991cb","Tags":["bootrepair.sys"],"Verified":"TRUE","Author":"Michael Haag","Created":"2026-05-19","MitreID":"T1068","Category":"vulnerable driver","Commands":{"Command":"sc.exe create BootRepair binPath=C:\\windows\\temp\\BootRepair.sys type=kernel && sc.exe start BootRepair","Description":"BootRepair.sys is a legitimate Lenovo kernel driver shipped with Lenovo PC Manager (signed by LENOVO via Symantec Class 3 SHA256 Code Signing CA, compile date 2018-01-03). The driver creates a device object at \\\\.\\BootRepair with no DACL restrictions, so any local user can open a handle. The IRP_MJ_DEVICE_CONTROL dispatcher accepts IOCTL 0x222014 with a 4-byte DWORD input (target PID) and chains PsLookupProcessByProcessId -> ObOpenObjectByPointer -> ZwTerminateProcess against the supplied PID, with no caller validation. Because the kernel-mode caller bypasses user-mode access checks, the primitive can terminate any process on the system including PPL-protected AV/EDR processes. The driver also imports ZwCreateKey / ZwSetValueKey / ZwQueryValueKey (registry access for the boot-repair feature), PsCreateSystemThread / IoRegisterShutdownNotification, and KeBugCheckEx.","Usecase":"Terminate arbitrary processes from kernel mode (including PPL-protected AV/EDR processes) via an unauthenticated IOCTL handler.","Privileges":"kernel","OperatingSystem":"Windows 10"},"Resources":["https://medium.com/@jehadbudagga/phantom-killer-reverse-engineering-and-weaponizing-a-lenovo-driver-to-terminate-edr-processes-9191cd06374f","https://github.com/redteamfortress/PhantomKiller","https://www.catonetworks.com/blog/cato-ctrl-silverfox-evolves/"],"Detection":[],"Acknowledgement":{"Person":"Jehad Abudagga","Handle":"@j3h4ck"},"KnownVulnerableSamples":[{"Filename":"BootRepair.sys","MD5":"82699276b0f59a2304120a6baaf64a6b","SHA1":"87903559afa09a0dfe251598c14e58124bddde1d","SHA256":"5ab36c116767eaae53a466fbc2dae7cfd608ed77721f65e83312037fbd57c946","LoadsDespiteHVCI":"FALSE","Imphash":"e1e5f6628200ed317625c64c1d1819aa","Authentihash":{"MD5":"b1b3128961d3cb0c2fac16215719e8f6","SHA1":"f8b69357a559dd51090026ce7d7999eb993ecc6c","SHA256":"498adc5cd35a5bab1fb935dc93158b297b0882b80206bbb74d003df0f1c8c037"},"RichPEHeaderHash":{"MD5":"dfd08a6b37c0d5175b05304630257dcc","SHA1":"032a883d2dd938e6db24e7823cb699af9c535670","SHA256":"f722f00ec078f6c3123a6cf695c3fa047e21686599f2818b2352e238aa43c649"},"Sections":{".text":{"Entropy":5.989688010531069,"Virtual Size":"0x1b0d"},".rdata":{"Entropy":3.953370505905165,"Virtual Size":"0x5c8"},".data":{"Entropy":2.4636528676691576,"Virtual Size":"0xf1"},".pdata":{"Entropy":3.643658336143637,"Virtual Size":"0x138"},".gfids":{"Entropy":0.8112781244591328,"Virtual Size":"0x4"},"INIT":{"Entropy":5.614216948545716,"Virtual Size":"0x5a8"},".rsrc":{"Entropy":3.2778749886467695,"Virtual Size":"0x360"},".reloc":{"Entropy":2.903107168362811,"Virtual Size":"0x18"}},"MagicHeader":"50 45 0 0","CreationTimestamp":"2018-01-03 00:15:40","Description":"BootRepair","Company":"LENOVO","InternalName":"BootRepair.sys","OriginalFilename":"BootRepair.sys","FileVersion":"2.5.30.11281","Product":"BootRepair","ProductVersion":"2.5.30.11281","Copyright":"LENOVO Corporation. All rights reserved.","MachineType":"AMD64","Imports":["ntoskrnl.exe"],"ExportedFunctions":"","ImportedFunctions":["RtlInitUnicodeString","KeDelayExecutionThread","ExFreePoolWithTag","PsCreateSystemThread","PsTerminateSystemThread","IofCompleteRequest","IoCreateDevice","IoCreateSymbolicLink","IoDeleteDevice","IoDeleteSymbolicLink","IoRegisterShutdownNotification","ObfDereferenceObject","ZwClose","ZwTerminateProcess","PsLookupProcessByProcessId","ObOpenObjectByPointer","__C_specific_handler","RtlCompareMemory","ExAllocatePool","ZwCreateKey","ZwOpenKey","ZwFlushKey","ZwQueryValueKey","ZwSetValueKey","KeBugCheckEx"],"Signatures":[{"CertificatesInfo":"","SignerInfo":"","Certificates":[{"Subject":"C=US, O=Symantec Corporation, CN=Symantec Time Stamping Services CA , G2","ValidFrom":"2012-12-21 00:00:00","ValidTo":"2020-12-30 23:59:59","Signature":"03099b8f79ef7f5930aaef68b5fae3091dbb4f82065d375fa6529f168dea1c9209446ef56deb587c30e8f9698d23730b126f47a9ae3911f82ab19bb01ac38eeb599600adce0c4db2d031a6085c2a7afce27a1d574ca86518e979406225966ec7c7376a8321088e41eaddd9573f1d7749872a16065ea6386a2212a35119837eb6","SignatureAlgorithmOID":"1.2.840.113549.1.1.5","IsCertificateAuthority":true,"SerialNumber":"7e93ebfb7cc64e59ea4b9a77d406fc3b","Version":3,"CertificateType":"CA","IsCodeSigning":false,"IsCA":true,"TBS":{"MD5":"d0785ad36e427c92b19f6826ab1e8020","SHA1":"365b7a9c21bd9373e49052c3e7b3e4646ddd4d43","SHA256":"c2abb7484da91a658548de089d52436175fdb760a1387d225611dc0613a1e2ff","SHA384":"eab4fe5ef90e0de4a6aa3a27769a5e879f588df5e4785aa4104debd1f81e19ea56d33e3a16e5facf99f68b5d8e3d287b"}},{"Subject":"C=US, O=Symantec Corporation, CN=Symantec Time Stamping Services Signer , G4","ValidFrom":"2012-10-18 00:00:00","ValidTo":"2020-12-29 23:59:59","Signature":"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","SignatureAlgorithmOID":"1.2.840.113549.1.1.5","IsCertificateAuthority":false,"SerialNumber":"0ecff438c8febf356e04d86a981b1a50","Version":3,"CertificateType":"Intermediate","IsCodeSigning":false,"IsCA":false,"TBS":{"MD5":"e9d38360b914c8863f6cba3ee58764d3","SHA1":"4cba8eae47b6bf76f20b3504b98b8f062694a89b","SHA256":"88901d86a4cc1f1bb193d08e1fb63d27452e63f83e228c657ab1a92e4ade3976","SHA384":"e9f2a75334a9e336c5a4712eadee88d0374b0fdc273262f4e65c9040ad2793067cc076696db5279a478773485e285652"}},{"Subject":"C=US, ST=North Carolina, L=Morrisville, O=LENOVO, CN=LENOVO","ValidFrom":"2015-01-13 00:00:00","ValidTo":"2018-01-12 23:59:59","Signature":"75b8f6ae868125e42d59ea82fc36669b33ee6aabdd339bf4e5cce0a3a7190594a5f6274ff1da25b1cea47e3a2e580ec0177d855c8e23938de92d0949eea0729e3d359d9aa18bf222aabe93ac6caf443156a1f33c3d203a8b705815ca860d3e08ccb122e2980235cdc6f9f306a7809b245b6681af15d3dea9b1a99be92f4be31e313772f209973190a3f5fd8a8433639b68188ca01511eca876bb3f2eaad8b00301e3e89ed3df69039fbe80133cf766780c4444875e18d5876ffec2ec02d3ab90d786951827a13925cc556a6871e6e794ff73a5731e329a6cd1dbfedf16b77a6c7af4149cde0aab1c87ae4d68429f15df0cc934dba6e2d038f83739c3db948117","SignatureAlgorithmOID":"1.2.840.113549.1.1.11","IsCertificateAuthority":false,"SerialNumber":"5716180db7d4989dc4a17083dcfa7567","Version":3,"CertificateType":"Leaf (Code Signing)","IsCodeSigning":true,"IsCA":false,"TBS":{"MD5":"5404bc6047806350940e277abad5f76f","SHA1":"51854ded636b6414d7f58aab51abe8746d52c825","SHA256":"e95925f96c72f047e428169c5770bdbef983d7e7935515a7dfcc13d4033bf7fe","SHA384":"1988aaf8c4acc9db4a569df59db27a80b804815e21b94e127ead5dcf9e95db73aa48d7a81cef97d3bef7d4620f78150c"}},{"Subject":"C=US, O=Symantec Corporation, OU=Symantec Trust Network, CN=Symantec Class 3 SHA256 Code Signing CA","ValidFrom":"2013-12-10 00:00:00","ValidTo":"2023-12-09 23:59:59","Signature":"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","SignatureAlgorithmOID":"1.2.840.113549.1.1.11","IsCertificateAuthority":true,"SerialNumber":"3d78d7f9764960b2617df4f01eca862a","Version":3,"CertificateType":"CA","IsCodeSigning":true,"IsCA":true,"TBS":{"MD5":"1f056ff7d5f874984dc605402b7cb042","SHA1":"bdb348353a2203deb4b767914fa1bd7248dd728b","SHA256":"a08e79c386083d875014c409c13d144e0a24386132980df11ff59737c8489eb1","SHA384":"fa2729064b49e0d77540c1ee95d5f74acaf8eaf55197851a3a40383335f8113e51190bc48b552196edf8ac5cf0c89278"}},{"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":"812a82168c34672be503eb347b8ca2a3508af45586f11e8c8eae7dee0319ce72951848ad6211fd20fd3f4706015ae2e06f8c152c4e3c6a506c0b36a3cf7a0d9c42bc5cf819d560e369e6e22341678c6883762b8f93a32ab57fbe59fba9c9b2268fcaa2f3821b983e919527978661ee5b5d076bcd86a8e26580a8e215e2b2be23056aba0cf347934daca48c077939c061123a050d89a3ec9f578984fbecca7c47661491d8b60f195de6b84aacbc47c8714396e63220a5dc7786fd3ce38b71db7b9b03fcb71d3264eb1652a043a3fa2ead59924e7cc7f233424838513a7c38c71b242228401e1a461f17db18f7f027356cb863d9cdb9645d2ba55eefc629b4f2c7f821cc04ba57fd01b6abc667f9e7d3997ff4f522fa72f5fdff3a1c423aa1f98018a5ee8d1cd4669e4501feaaeefffb178f30f7f1cd29c59decb5d549003d85b8cbbb933a276a49c030ae66c9f723283276f9a48356c848ce5a96aaa0cc0cc47fb48e97af6de35427c39f86c0d6e473089705dbd054625e0348c2d59f7fa7668cd09db04fd4d3985f4b7ac97fb22952d01280c70f54b61e67cdc6a06c110384d34875e72afeb03b6e0a3aa66b769905a3f177686133144706fc537f52bd92145c4a246a678caf8d90aad0f679211b93267cc3ce1ebd883892ae45c6196a4950b305f8ae59378a6a250394b1598150e8ba8380b72335f476b9671d5918ad208d94","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"}}],"Signer":[{"SerialNumber":"5716180db7d4989dc4a17083dcfa7567","Issuer":"C=US, O=Symantec Corporation, OU=Symantec Trust Network, CN=Symantec Class 3 SHA256 Code Signing CA","Version":1}]}]}]}