csrss[.]exe | Triage

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General

Target

csrss.exe
Size

36KB
MD5

a6c9ee45bff7c5e696b07ec41af84541
SHA1

7821fb14835083bae87a66ce96b67b261bea6b2b
SHA256

50cbdbce85014f1042f99d5acdaad88ff268317a605bc3700b2487edd0f2ef0e
SHA512

4ba4c6ced25cbf4c5c7475b1a0855ef0439ef15f78cbf311b8895e222fbbaf05387a95794d4dd87ff6979d34084416d4fd6d58cafd3887ae4136cfb4b8ac344b
SSDEEP

192:3rAhzgEPwlTwChqmDW5UnWKh8DDBQABJWWYcA5E8qnajTwdU:3QoPnDW5UnWnDDBRJUx5E8lvwm

Score

1^/10

Malware Config

Signatures

Files

csrss.exe
.sys windows:10 windows x64 arch:x64

a96fa9912e09e361274ad77f1a4b252c

Code Sign

33:00:00:02:a5:e1:a0:81:b7:c8:95:c0:ed:00:00:00:00:02:a5
Certificate

Issuer

CN=Microsoft Windows Production PCA 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Not Before

24-09-2020 19:16

Not After

23-09-2021 19:16

Subject

CN=Microsoft Windows Publisher,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Extended Key Usages

ExtKeyUsageCodeSigning

61:07:76:56:00:00:00:00:00:08
Certificate

Issuer

CN=Microsoft Root Certificate Authority 2010,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Not Before

19-10-2011 18:41

Not After

19-10-2026 18:51

Subject

CN=Microsoft Windows Production PCA 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

16:8f:55:10:ab:d4:37:16:9c:1e:e5:49:17:a1:ce:1c:ad:2e:05:e0:9b:c2:cc:e1:31:83:f6:f4:0d:1d:fd:03
Signer

Actual PE Digest

16:8f:55:10:ab:d4:37:16:9c:1e:e5:49:17:a1:ce:1c:ad:2e:05:e0:9b:c2:cc:e1:31:83:f6:f4:0d:1d:fd:03

Digest Algorithm

sha256

PE Digest Matches

true

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_GUARD_CF

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE

PDB Paths

csrss.pdb

Imports

ntdll

NtSetInformationProcess
RtlSetHeapInformation
NtTerminateProcess
RtlSetUnhandledExceptionFilter
RtlLookupFunctionEntry
RtlVirtualUnwind
RtlUnhandledExceptionFilter
RtlUnicodeStringToAnsiString
NtTerminateThread
RtlCaptureContext
RtlFreeAnsiString
RtlAllocateHeap
RtlNormalizeProcessParams
isspace

csrsrv

CsrUnhandledExceptionFilter
CsrServerInitialization

Sections

.text
Size: 4KB - Virtual size: 1KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 4KB - Virtual size: 1KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 4KB - Virtual size: 1KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.pdata
Size: 4KB - Virtual size: 120B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.rsrc
Size: 4KB - Virtual size: 2KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

.reloc
Size: 4KB - Virtual size: 40B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

a96fa9912e09e361274ad77f1a4b252c

Code Sign

33:00:00:02:a5:e1:a0:81:b7:c8:95:c0:ed:00:00:00:00:02:a5Certificate

Extended Key Usages

61:07:76:56:00:00:00:00:00:08Certificate

Key Usages

16:8f:55:10:ab:d4:37:16:9c:1e:e5:49:17:a1:ce:1c:ad:2e:05:e0:9b:c2:cc:e1:31:83:f6:f4:0d:1d:fd:03Signer

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

ntdll

csrsrv

Sections

.text Size: 4KB - Virtual size: 1KB

.rdata Size: 4KB - Virtual size: 1KB

.data Size: 4KB - Virtual size: 1KB

.pdata Size: 4KB - Virtual size: 120B

.rsrc Size: 4KB - Virtual size: 2KB

.reloc Size: 4KB - Virtual size: 40B

33:00:00:02:a5:e1:a0:81:b7:c8:95:c0:ed:00:00:00:00:02:a5
Certificate

61:07:76:56:00:00:00:00:00:08
Certificate

16:8f:55:10:ab:d4:37:16:9c:1e:e5:49:17:a1:ce:1c:ad:2e:05:e0:9b:c2:cc:e1:31:83:f6:f4:0d:1d:fd:03
Signer

.text
Size: 4KB - Virtual size: 1KB

.rdata
Size: 4KB - Virtual size: 1KB

.data
Size: 4KB - Virtual size: 1KB

.pdata
Size: 4KB - Virtual size: 120B

.rsrc
Size: 4KB - Virtual size: 2KB

.reloc
Size: 4KB - Virtual size: 40B