System[.]IO[.]FileSystem[.]dll

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General

Target

System.IO.FileSystem.dll
Size

23KB
MD5

0ef211346b4b47d6731f629749249e98
SHA1

c4ed2337c3dd9f98f43f335c3eb16be85558e080
SHA256

86a199b7f1a4085fd5be22b75a5703d250db53b4e6773a8908c98ba8d85dbe65
SHA512

f072a262c707900efdef5ac9f1e8377c45d3993a380dd911b8377e751bee94f055e1aa2da89f94068c4be1c2ac2e636e0fd44131795cff0169a75eeb784c12df
SSDEEP

384:j5aPWc+mFnJ85Zu+m2sqjd5z5nN/RLCPJh0uWJ2WqSsBlHRN7CLpUad+JR9zus2J:YP7Fn8dPfVZExq56jCaadk9zuN

Score

N/A

Malware Config

Signatures

Files

System.IO.FileSystem.dll
.dll windows x86

dae02f32a21e03ce65412f6e56942daa

Code Sign

33:00:00:02:8d:7e:47:c3:82:7e:05:1a:2a:00:00:00:00:02:8d
Certificate

Issuer

CN=Microsoft Code Signing PCA 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Not Before

14/10/2021, 18:45

Not After

13/10/2022, 18:45

Subject

CN=.NET,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Extended Key Usages

ExtKeyUsageCodeSigning

61:0e:90:d2:00:00:00:00:00:03
Certificate

Issuer

CN=Microsoft Root Certificate Authority 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Not Before

08/07/2011, 20:59

Not After

08/07/2026, 21:09

Subject

CN=Microsoft Code Signing PCA 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

86:d4:7b:77:e1:ff:6c:b7:68:0e:d5:5e:ad:e4:01:5d:af:8f:88:fd:1b:97:e6:05:28:6b:28:cb:6a:59:9d:e8
Signer

Actual PE Digest

86:d4:7b:77:e1:ff:6c:b7:68:0e:d5:5e:ad:e4:01:5d:af:8f:88:fd:1b:97:e6:05:28:6b:28:cb:6a:59:9d:e8

Digest Algorithm

sha256

PE Digest Matches

true

Signature Validations

Trusted

false

Verification

Signing Certificate

CN=.NET,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

15/12/2022, 13:55
Valid: false

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_NO_SEH
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE
IMAGE_FILE_32BIT_MACHINE

Imports

mscoree

_CorDllMain

Sections

.text
Size: 11KB - Virtual size: 10KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rsrc
Size: 1KB - Virtual size: 1KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 512B - Virtual size: 12B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

dae02f32a21e03ce65412f6e56942daa

Code Sign

33:00:00:02:8d:7e:47:c3:82:7e:05:1a:2a:00:00:00:00:02:8dCertificate

Extended Key Usages

61:0e:90:d2:00:00:00:00:00:03Certificate

Key Usages

86:d4:7b:77:e1:ff:6c:b7:68:0e:d5:5e:ad:e4:01:5d:af:8f:88:fd:1b:97:e6:05:28:6b:28:cb:6a:59:9d:e8Signer

Signature Validations

Verification

15/12/2022, 13:55 Valid: false

Headers

DLL Characteristics

File Characteristics

Imports

mscoree

Sections

.text Size: 11KB - Virtual size: 10KB

.rsrc Size: 1KB - Virtual size: 1KB

.reloc Size: 512B - Virtual size: 12B

33:00:00:02:8d:7e:47:c3:82:7e:05:1a:2a:00:00:00:00:02:8d
Certificate

61:0e:90:d2:00:00:00:00:00:03
Certificate

86:d4:7b:77:e1:ff:6c:b7:68:0e:d5:5e:ad:e4:01:5d:af:8f:88:fd:1b:97:e6:05:28:6b:28:cb:6a:59:9d:e8
Signer

15/12/2022, 13:55
Valid: false

.text
Size: 11KB - Virtual size: 10KB

.rsrc
Size: 1KB - Virtual size: 1KB

.reloc
Size: 512B - Virtual size: 12B