{"Id":"9e0a1bae-6509-41fd-a5bf-dfe6cf388682","Tags":["driver_206006a1.sys"],"Verified":"TRUE","Author":"Michael Haag","Created":"2024-09-10","MitreID":"T1068","Category":"malicious","Commands":{"Command":"sc.exe create driver_bfcbc010.sys binPath=C:\\windows\\temp\\driver_bfcbc010.sys type=kernel && sc.exe start driver_bfcbc010.sys","Description":"Sophos, from time to time, has observed a threat actor deploy variants of Poortry on different machines within a single estate during an attack. These variants contain the same payload, but signed with a different certificate than the driver first seen used during the attack.","Usecase":"Elevate privileges","Privileges":"kernel","OperatingSystem":"Windows 10"},"Resources":["https://news.sophos.com/en-us/2024/08/27/burnt-cigar-2/"],"Detection":[],"Acknowledgement":{"Person":"","Handle":""},"KnownVulnerableSamples":[{"Filename":"","MD5":"d04043db948ce9f4c5ba03dc23675556","SHA1":"04e55c61f01529fb6c579ca5bf3ce81f0241a477","SHA256":"206006a11f233b9ae876952308f6d60d7a75c80b4d530a3e6146a0b4d8cd3e4f","Signature":"","Date":"","Publisher":"","Company":"Windows (R) Win 7 DDK provider","Description":"NetFilter SDK WFP Driver (WPP)","Product":"Windows (R) Win 7 DDK driver","ProductVersion":"6.2.9200.20557","FileVersion":"1.6.5.7","MachineType":"AMD64","OriginalFilename":"netfilter2.sys","Imphash":"4acb54175cf28b6cb60fc93a8cd171e4","Authentihash":{"MD5":"2a8d905d06f54bd8abc4b28e70cfe839","SHA1":"93e31aaac7af96d42b40614c9ae33ff08b71e4ce","SHA256":"ebe86f9f6c9c6639f3327f210c2a945bbbf069f505b1b85e3aee8d1cddf702f9"},"RichPEHeaderHash":{"MD5":"7215887f0367afe14e92250c2a3f48bf","SHA1":"78c4195ddc60e2633e93030f25c9271456a48f2e","SHA256":"13711724ca60d1c8fde40113e56853d865d60a32594af563561e86a7b202ab40"},"Sections":{".text":{"Entropy":6.190612220720032,"Virtual Size":"0x11b6f"},".rdata":{"Entropy":4.876803133271859,"Virtual Size":"0x2104"},".data":{"Entropy":2.091043110410875,"Virtual Size":"0x19b8"},".pdata":{"Entropy":5.087179566260581,"Virtual Size":"0x1044"},"INIT":{"Entropy":5.387817814104917,"Virtual Size":"0x916"},".rsrc":{"Entropy":3.596065755258212,"Virtual Size":"0x448"},".reloc":{"Entropy":3.557944147717271,"Virtual Size":"0x234"}},"MagicHeader":"50 45 0 0","CreationTimestamp":"2022-11-17 08:07:16","InternalName":"netfilter2.sys","Copyright":"Copyright © NetFilterSDK.com","Imports":["fwpkclnt.sys","NDIS.SYS","ntoskrnl.exe"],"ExportedFunctions":"","ImportedFunctions":["FwpsFreeNetBufferList0","NdisFreeGenericObject","NdisFreeNetBufferListPool","NdisRetreatNetBufferDataStart","NdisAdvanceNetBufferDataStart","NdisGetDataBuffer","NdisAllocateGenericObject","NdisInitializeEvent","NdisWaitEvent","NdisAllocateNetBufferListPool","RtlCompareMemory","KeAcquireInStackQueuedSpinLock","KeReleaseInStackQueuedSpinLock","ExAllocatePoolWithTag","ExUuidCreate","swprintf_s","__C_specific_handler","RtlInitUnicodeString","MmGetSystemRoutineAddress","RtlAppendUnicodeToString","RtlCreateSecurityDescriptor","RtlSetDaclSecurityDescriptor","KeInitializeEvent","KeSetEvent","KeWaitForSingleObject","ExFreePoolWithTag","ExQueryDepthSList","ExpInterlockedPopEntrySList","ExpInterlockedPushEntrySList","ExInitializeNPagedLookasideList","ExDeleteNPagedLookasideList","MmBuildMdlForNonPagedPool","MmMapLockedPagesSpecifyCache","MmUnmapLockedPages","MmAllocatePagesForMdl","MmFreePagesFromMdl","PsCreateSystemThread","PsTerminateSystemThread","IoAllocateMdl","IofCompleteRequest","IoCreateDevice","IoCreateSymbolicLink","IoDeleteDevice","IoDeleteSymbolicLink","IoFreeMdl","IoReleaseCancelSpinLock","ObReferenceObjectByHandle","ObfDereferenceObject","ZwClose","ZwOpenKey","ZwQueryValueKey","PsGetCurrentProcessId","ZwSetInformationThread","RtlLengthSid","RtlCreateAcl","RtlAddAccessAllowedAce","PsLookupProcessByProcessId","ObOpenObjectByPointer","ZwSetSecurityObject","SeExports","RtlGetVersion","RtlValidSid","_stricmp","ZwQuerySystemInformation","KeBugCheckEx"],"Signatures":[{"CertificatesInfo":"","SignerInfo":"","Certificates":[{"Subject":"C=CN, ST=Guangdong, L=Shenzhen, O=Shenzhen Huanan Xingfa Electronic Equipment Firm, CN=Shenzhen Huanan Xingfa Electronic Equipment Firm","ValidFrom":"2013-07-10 00:00:00","ValidTo":"2014-07-10 23:59:59","Signature":"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","SignatureAlgorithmOID":"1.2.840.113549.1.1.5","IsCertificateAuthority":false,"SerialNumber":"1cb2d523a6bf7a066642c578de1c9be4","Version":3,"CertificateType":"Leaf (Code Signing)","IsCodeSigning":true,"IsCA":false,"TBS":{"MD5":"65742dda29af02ee39af8b3c11f7469b","SHA1":"521f7a1f51ac74d4f29c599aa9dff8d466158438","SHA256":"33a7dcdd20164cdfa97f1af890a17ec28047093c116185a42dbcb77ceaabc769","SHA384":"c6ee18c1175e124cc37ceeb72251230868f8fe48e2052a1984b6b1b0975039de150f9a7cad5969f44d504ec0357ec8b1"}},{"Subject":"C=US, O=Thawte, Inc., CN=Thawte Code Signing CA , G2","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":"47974d7873a5bcab0d2fb370192fce5e","Version":3,"CertificateType":"CA","IsCodeSigning":true,"IsCA":true,"TBS":{"MD5":"e3a93dc2a8a8a668fdbb286bfe9afab5","SHA1":"95795d2aa2a554a423bc8c6e5b0a016d14887d35","SHA256":"d8844186775bddbccaf3dc017064df7d760fd4b85c5d07561a3efd7da950f89e","SHA384":"78d972495720b43a6470b18ae1226bcca20707628087717a9364c14ca053ba264e6d149718b103542d9942200138a69d"}},{"Subject":"C=US, O=thawte, Inc., OU=Certification Services Division, OU=(c) 2006 thawte, Inc. , For authorized use only, CN=thawte Primary Root CA","ValidFrom":"2011-02-22 19:31:57","ValidTo":"2021-02-22 19:41:57","Signature":"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","SignatureAlgorithmOID":"1.2.840.113549.1.1.5","IsCertificateAuthority":true,"SerialNumber":"611fb0a400000000001d","Version":3,"CertificateType":"CA","IsCodeSigning":false,"IsCA":true,"TBS":{"MD5":"a3f222107d4e1085e73b5b589c2f480b","SHA1":"b94aa26cd77c48d91a53ac44506cbd255e1d362c","SHA256":"a39ed0d6fd4eb1a6f7fed60f726e23eae668b7591bc004644625d22c701213fa","SHA384":"64b7643e4146016cbf83c911eb67e4601b6bb8d66f8ee8dcee67b815f91770d86ab23678b984430f22a963e5484881b7"}}],"Signer":[{"SerialNumber":"1cb2d523a6bf7a066642c578de1c9be4","Issuer":"C=US, O=Thawte, Inc., CN=Thawte Code Signing CA , G2","Version":1}]}],"LoadsDespiteHVCI":"TRUE"}]}