library where host.os.type == "windows" and
(dll.Ext.relative_file_creation_time <= 500 or
dll.Ext.relative_file_name_modify_time <= 500 or
dll.Ext.device.product_id : ("Virtual DVD-ROM", "Virtual Disk")) and dll.hash.sha256 != null and
process.code_signature.status :"trusted" and not dll.code_signature.status : ("trusted", "errorExpired", "errorCode_endpoint*") and
/* DLL loaded from the process.executable current directory */
endswith~(substring(dll.path, 0, length(dll.path) - (length(dll.name) + 1)), substring(process.executable, 0, length(process.executable) - (length(process.name) + 1)))
and not user.id : "S-1-5-18" and
not dll.hash.sha256 : (
"19588e6a318894abe8094374bee233e666f319de909c69f12a6047b14473e299",
"6e8bee250c8cc1b65150522f33794759f5c65f58fff17c5cbf6422ad68b421d2",
"55de11531dc0e566cb91f26e48d1301a161a4b8b24abed42304d711412368760",
"56a5148d00c2d9e58415be2d64eca922a58063fe26d9af1c87084aa383c9058e",
"83ee0ff920144edb2c2f4ea10130f55443493290886985a63233fa2431e450f9",
"0d0d8f2eaff6b5f75e63d9721d5a0480b30e70792fe0d3a24d76fd3e61b05982",
"8b6ce3a640e2d6f36b0001be2a1abb765ae51e62c314a15911e75138cbb544bb",
"ea02a19dd824cb7d611b8821d1b9e6a076714a195d027d1ff918128a64ac5220",
"02a6d001e6dd944738e09b720e49dcb1272cb782b870e5ae319d4600bc192225",
"e7714a1d6ac3f4c4ae22564b9ca301e486f5f42691859c0a687246c47b5cf5c9",
"17f0f709fb7f6190c03b19b6198fd863b6f0d79f46ccfebac6064be747a4cb3e",
"cb7ab3788d10940df874acd97b1821bbb5ee4a91f3eec11982bb5bf7a3c96443",
"c944ee510721a1d30d42227cc3061dfdcbc144c952381afcfe4f6e82c5435ffc",
"967189adfbc889fde89aafc867f7a1f02731f8592cf6fd5a4ace1929213e2e13",
"4a824526749790603eb66777f79787128dd282162a3904a4c1135de43b14d029",
"620a7e658af05cc848091b8a639854b9b15700a9061b4a3d078523653133a4af",
"cb220267fb0116b298bab6a09a764420d630c52026f7d750f8ffca4818389327",
"0da1f856d92d6b95f10ed8c3f629cd15468c906de9352fb4ae629139d1412eed",
"e1646c7778c24407a17881908037a49ecfcb5a980d155212d544302653a3ef62",
"e102c9c5b22ceb60dc516ab4124bea8ec8e808b08eec48ea7ac674d13fca82ef",
"c7544e1f9927afdf6e8cd7063020b572e60fe8f00af39227eb831d331df38225",
"3668c6749db59a6cbc5293d0a4f904f76d6fb5048704449dd53894916f408a57",
"7705851ba047a8154402aca92621b60be0e0e9d9b52b19bf8be540305bd53dba",
"b5acf358ff97127eac9ef4c664a980b937376b5295ef23d77ee338225de10d60",
"394d2d862f2ddce71f28d9b933b21a7d6c621c80ef28652574f758f77f01f716",
"e958d03db79e9f1d2770c70a5bc24904aa3e2d27a8d5637684cf8166b38908f2",
"284701380f33a30b25e8eb9822e7f47179238e91d08bd3fb5a117145de7e0d8d",
"497471497886f18ca16f7facab7d76dc9bfadd69deb9c6e4ea9bdc0869a15628",
"739bedcfc8eb860927eb2057474be5b39518aaaa6703f9f85307a432fa1f236e",
"8f4c72e3c7de1ab5d894ec7813f65c5298ecafc183f31924b44a427433ffca42",
"1ac4753056179b358132c55ca3086d550849ae30259ba94f334826c2fbf6c57e",
"53e8fecd7d4b1b74064eba9bfa6a361d52929f440954931b4ba65615148bf0ea",
"e9088afd8871dbad5eda47a9d8abf3b08dd2e17c423ba8a05f9b6ad6751f9b7c",
"ab27eb05130db2f92499234b69ff97ee6429c7824efcb7324ae3e404e2b405bf",
"553451008520a5f0110d84192cba40208fb001c27454f946e85e6fb2e6553292"
)
Install detection rules in Elastic Security
Detect Unsigned DLL Loaded by a Trusted Process in the Elastic Security detection engine by installing this rule into your Elastic Stack.
To setup this rule, check out the installation guide for Prebuilt Security Detection Rules(opens in a new tab or window).