{"DetectionScope":"context-only","ResearchEvidence":{"Id":"2ada18ae-2c52-49b6-b1a0-cf3b267f6dc7","Tags":["sfdrvx32.sys"],"Verified":"TRUE","Author":"Nasreddine Bencherchali","Created":"2023-05-06","MitreID":"T1068","Category":"vulnerable driver","Commands":{"Command":"sc.exe create sfdrvx32.sys binPath=C:\\windows\\temp\\sfdrvx32.sys type=kernel && sc.exe start sfdrvx32.sys","Description":"","Usecase":"Elevate privileges","Privileges":"kernel","OperatingSystem":"Windows 10"},"Resources":["Internal Research"],"Detection":[{"type":"yara_signature","value":"https://github.com/magicsword-io/LOLDrivers/blob/main/detections/yara/yara-rules_vuln_drivers_strict_renamed.yar"},{"type":"sigma_hash","value":"https://github.com/magicsword-io/LOLDrivers/blob/main/detections/sigma/driver_load_win_vuln_drivers.yml"},{"type":"sigma_names","value":"https://github.com/magicsword-io/LOLDrivers/blob/main/detections/sigma/driver_load_win_vuln_drivers_names.yml"},{"type":"sysmon_hash_detect","value":"https://github.com/magicsword-io/LOLDrivers/blob/main/detections/sysmon/sysmon_config_vulnerable_hashes.xml"},{"type":"sysmon_hash_block","value":"https://github.com/magicsword-io/LOLDrivers/blob/main/detections/sysmon/sysmon_config_vulnerable_hashes_block.xml"}],"Acknowledgement":{"Person":"","Handle":""},"KnownVulnerableSamples":[{"Filename":"sfdrvx32.sys","MD5":"9f70cd5edcc4efc48ae21e04fb03be9d","SHA1":"42bb38b0b93d83b62fe2604b154ada9314c98df7","SHA256":"ad23d77a38655acb71216824e363df8ac41a48a1a0080f35a0d23aa14b54460b","Authentihash":{"MD5":"b67247d2d35a3ff9c8ba26d4eeb0d40f","SHA1":"e838b0bb0ebbe76e5f53ba6e508b71c7f077f3af","SHA256":"f9fead3227d5cf7daf8c5312db672bc7a684e2216b2f48ff2fcd14493bc9c254"},"Description":"Speed Fan x32 Driver","Company":"Almico Software","InternalName":"sfdrvx32.sys","OriginalFilename":"sfdrvx32.sys","FileVersion":"X4.43.04","Product":"Speed Fan","ProductVersion":"X4.43.04","Copyright":"Copyright © Almico Software 2001-2010","MachineType":"I386","Imports":["ntoskrnl.exe"],"ExportedFunctions":"","ImportedFunctions":["IoDeleteDevice","DbgPrint","IoDeleteSymbolicLink","IofCompleteRequest","ExFreePoolWithTag","ObfDereferenceObject","PsGetVersion","MmGetSystemRoutineAddress","RtlInitUnicodeString","RtlQueryRegistryValues","ExAllocatePoolWithTag","ObfReferenceObject","IoGetDeviceObjectPointer","IoCancelIrp","KeWaitForSingleObject","IofCallDriver","IoBuildDeviceIoControlRequest","KeInitializeEvent","MmUnmapIoSpace","MmMapIoSpace","IoCreateSymbolicLink","IoCreateDevice","KeTickCount","RtlUnwind","KeBugCheckEx"],"Signatures":[{"CertificatesInfo":"","SignerInfo":"","Certificates":[{"Subject":"C=US, O=VeriSign, Inc., CN=VeriSign Time Stamping Services Signer , G2","ValidFrom":"2007-06-15 00:00:00","ValidTo":"2012-06-14 23:59:59","Signature":"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","SignatureAlgorithmOID":"1.2.840.113549.1.1.5","IsCertificateAuthority":false,"SerialNumber":"3825d7faf861af9ef490e726b5d65ad5","Version":3,"CertificateType":"Intermediate","IsCodeSigning":false,"IsCA":false,"TBS":{"MD5":"d6c7684e9aaa508cf268335f83afe040","SHA1":"18066d20ad92409c567cdfde745279ff71c75226","SHA256":"a612fb22ce8be6dab75e47c98508f98496583e79c9c97b936a8caee9ea9f3fff","SHA384":"35c249d6ad0261a6229b2a727067ac6ba32a5d24b30b9249051f748c7735fbe2ec2ef26a702c50df1790fbe32a65aee7"}},{"Subject":"C=US, O=VeriSign, Inc., CN=VeriSign Time Stamping Services CA","ValidFrom":"2003-12-04 00:00:00","ValidTo":"2013-12-03 23:59:59","Signature":"4a6bf9ea58c2441c318979992b96bf82ac01d61c4ccdb08a586edf0829a35ec8ca9313e704520def47272f0038b0e4c9934e9ad4226215f73f37214f703180f18b3887b3e8e89700fecf55964e24d2a9274e7aaeb76141f32acee7c9d95eddbb2b853eb59db5d9e157ffbeb4c57ef5cf0c9ef097fe2bd33b521b1b3827f73f4a","SignatureAlgorithmOID":"1.2.840.113549.1.1.5","IsCertificateAuthority":true,"SerialNumber":"47bf1995df8d524643f7db6d480d31a4","Version":3,"CertificateType":"CA","IsCodeSigning":false,"IsCA":true,"TBS":{"MD5":"518d2ea8a21e879c942d504824ac211c","SHA1":"21ce87d827077e61abddf2beba69fde5432ea031","SHA256":"1ec3b4f02e03930a470020e0e48d24b84678bb558f46182888d870541f5e25c7","SHA384":"53e346bbde23779a5d116cc9d86fdd71c97b1f1b343439f8a11aa1d3c87af63864bb8488a5aeb2d0c26a6a1e0b15f03f"}},{"Subject":"C=US, O=VeriSign, Inc., OU=VeriSign Trust Network, OU=Terms of use at https://www.verisign.com/rpa (c)09, CN=VeriSign Class 3 Code Signing 2009,2 CA","ValidFrom":"2009-05-21 00:00:00","ValidTo":"2019-05-20 23:59:59","Signature":"8b03c0dd94d841a26169b015a878c730c6903c7e42f724b6e4837317047f04109ca1e2fa812febc0ca44e772e050b6551020836e9692e49a516ab43731dca52deb8c00c71d4fe74d32ba85f84ebefa675565f06abe7aca64381a101078457631f3867a030f60c2b35d9df68b6676821b59e183e5bd49a53856e5de41770e580f","SignatureAlgorithmOID":"1.2.840.113549.1.1.5","IsCertificateAuthority":true,"SerialNumber":"655226e1b22e18e1590f2985ac22e75c","Version":3,"CertificateType":"CA","IsCodeSigning":true,"IsCA":true,"TBS":{"MD5":"650704c342850095f3288eaf791147d4","SHA1":"4cdc38c800761463749c3cbd94a12f32e49877bf","SHA256":"07b8f662558ec85b71b43a79c6e94698144f4ced2308af21e7ba1e5d461da214","SHA384":"2a271d052213438467d09d60eaa4010c8642fff3eb0070e0cf9969428713c8fdc066b90996d594dd3136f5bd0af5a22a"}},{"Subject":"C=IT, ST=Marche, L=Ancona, O=Sokno S.R.L., OU=Digital ID Class 3 , Microsoft Software Validation v2, OU=Software Development, CN=Sokno S.R.L.","ValidFrom":"2010-02-06 00:00:00","ValidTo":"2011-02-11 23:59:59","Signature":"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","SignatureAlgorithmOID":"1.2.840.113549.1.1.5","IsCertificateAuthority":false,"SerialNumber":"202ed4a0a58d3214998c9a2bed089580","Version":3,"CertificateType":"Leaf (Code Signing)","IsCodeSigning":true,"IsCA":false,"TBS":{"MD5":"55742be12a3eedd1220df04ce0bf919b","SHA1":"e385f5f8c52ddad2a1f19e6d43a289e012e5f478","SHA256":"34213e50739ea1768a9bf3c3eed6dabbb5d8ab444636ec35f9d6c71a4c73863d","SHA384":"eefa42b51c6c31c434858a27a4717af9c186e8850bc2aa49b92a4205f59f3fd329fa4b1911a08b17b137cf37c35aae6c"}},{"Subject":"C=US, O=VeriSign, Inc., OU=Class 3 Public Primary Certification Authority","ValidFrom":"2006-05-23 17:01:29","ValidTo":"2016-05-23 17:11:29","Signature":"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","SignatureAlgorithmOID":"1.2.840.113549.1.1.5","IsCertificateAuthority":true,"SerialNumber":"610c120600000000001b","Version":3,"CertificateType":"Intermediate","IsCodeSigning":false,"IsCA":false,"TBS":{"MD5":"53c41bc1164e09e0cd1617a5bf913efd","SHA1":"93c03aac8951d494ecd5696b1c08658541b18727","SHA256":"40bddadac24dc61ca4fb5cab2a2bc5d876bc36808311039a7a3e1a4066f7489b","SHA384":"f51d4e75ba638f7314cd59b8d6d45f3b34d35ce6986e9d205cd6f333e8e8d8e9c91f636e6bc84731b6661673f40963d8"}}],"Signer":[{"SerialNumber":"202ed4a0a58d3214998c9a2bed089580","Issuer":"C=US, O=VeriSign, Inc., OU=VeriSign Trust Network, OU=Terms of use at https://www.verisign.com/rpa (c)09, CN=VeriSign Class 3 Code Signing 2009,2 CA","Version":1}]}],"RichPEHeaderHash":{"MD5":"eb1de85a826ce3014afc6f1b75fbbb5e","SHA1":"e7acb271725bfd3b9c46cc271eebfb22ff72db95","SHA256":"242af8aec339dbf89a98c94c5a7854bac50697c1a5d8416462a22f508720d68d"},"Sections":{".text":{"Entropy":6.59340421173457,"Virtual Size":"0x2141"},".rdata":{"Entropy":4.517985554033445,"Virtual Size":"0x118"},".data":{"Entropy":2.709147917027245,"Virtual Size":"0x18"},"PAGE":{"Entropy":6.040362768579528,"Virtual Size":"0x77c"},"INIT":{"Entropy":6.028057441714965,"Virtual Size":"0x466"},".rsrc":{"Entropy":3.314057859058699,"Virtual Size":"0x3f8"},".reloc":{"Entropy":5.771203435719941,"Virtual Size":"0x1ec"}},"MagicHeader":"50 45 0 0","CreationTimestamp":"2010-12-18 06:03:50","Imphash":"c3c9e6c0c33bad17eb055ec795fc113e","LoadsDespiteHVCI":"FALSE"}]}}