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

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General

Target

System.IO.Compression.FileSystem.dll
Size

15KB
MD5

f382ab833a30c5c61ec201fcc10bca0d
SHA1

3cd03c49c8e4cdcc13d534bb1e8575ed3ab44201
SHA256

69d8888a16ddcc92845af1e3f51fb0557a194acd32cab1dde2c25192f936412e
SHA512

4c853cec9665a5f4ad734758fac3aa034cec90f8b12b59e6dbf923692d59d0f019c09dad239346987f6790147c3cd35873d3ee02d2157a532b116dd9032547c0
SSDEEP

384:fPBDf6WdmWhHsBlHRN7/y50ZSxR9zusfGd:fP1fRKjK50Zi9zu9d

Score

N/A

Malware Config

Signatures

Files

System.IO.Compression.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

32:ea:72:25:de:5c:d4:a3:7d:e1:17:4b:12:1d:d4:cf:e8:e4:f7:77:5a:fb:9a:83:2d:92:b7:a3:87:cc:c7:3e
Signer

Actual PE Digest

32:ea:72:25:de:5c:d4:a3:7d:e1:17:4b:12:1d:d4:cf:e8:e4:f7:77:5a:fb:9a:83:2d:92:b7:a3:87:cc:c7:3e

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 13:59
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

Imports

mscoree

_CorDllMain

Sections

.text
Size: 3KB - Virtual size: 2KB

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

32:ea:72:25:de:5c:d4:a3:7d:e1:17:4b:12:1d:d4:cf:e8:e4:f7:77:5a:fb:9a:83:2d:92:b7:a3:87:cc:c7:3eSigner

Signature Validations

Verification

15-12-2022 13:59 Valid: false

Headers

DLL Characteristics

File Characteristics

Imports

mscoree

Sections

.text Size: 3KB - Virtual size: 2KB

.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

32:ea:72:25:de:5c:d4:a3:7d:e1:17:4b:12:1d:d4:cf:e8:e4:f7:77:5a:fb:9a:83:2d:92:b7:a3:87:cc:c7:3e
Signer

15-12-2022 13:59
Valid: false

.text
Size: 3KB - Virtual size: 2KB

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

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