SkypeServerUpdateInstaller[.]exe

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General

Target

SkypeServerUpdateInstaller.exe
Size

143.1MB
MD5

cb97d3f773dbbe8dd8b827399c0e01a2
SHA1

4d4bf6827b9456de34dc0d9e3d3e3a49c17a2749
SHA256

f87e61e363a0ce12c30e78c0b1693e9e7a5a74921c97c98c99d2b619887341dc
SHA512

4036c796ea1b474572e6f4486435f7ef6c8f66a93033cba20c414fa0b72cf2b54a6b11cbf1318e654513b4dd07960f2da7304f90cc4ecee16a35e4027311554c
SSDEEP

3145728:+BJsn5BvHLv85/lWxH27oLzhSsYDe0/KzN/iDe0/2fbwh8NO1w7Qv3:Jz8BohNLzJYDe0CkDe0ufkh8NOWC

Score

1^/10

Malware Config

Signatures

Files

SkypeServerUpdateInstaller.exe
.exe windows x86

f34d5f2d4577ed6d9ceec516c1f5a744

Code Sign

33:00:00:02:cc:8e:b5:96:a6:bd:d1:c9:4e:00:00:00:00:02:cc
Certificate

Issuer

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

Not Before

12/05/2022, 20:46

Not After

11/05/2023, 20:46

Subject

CN=Microsoft Corporation,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

72:c6:5b:8b:24:30:5b:df:e0:9b:cd:cf:58:1d:b7:eb:64:3d:bc:90:ce:d2:bf:c5:a9:eb:b7:f9:6d:71:58:8e
Signer

Actual PE Digest

72:c6:5b:8b:24:30:5b:df:e0:9b:cd:cf:58:1d:b7:eb:64:3d:bc:90:ce:d2:bf:c5:a9:eb:b7:f9:6d:71:58:8e

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_NO_SEH
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE

Imports

mscoree

_CorExeMain

Sections

.text
Size: 143.1MB - Virtual size: 143.1MB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

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

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

f34d5f2d4577ed6d9ceec516c1f5a744

Code Sign

33:00:00:02:cc:8e:b5:96:a6:bd:d1:c9:4e:00:00:00:00:02:ccCertificate

Extended Key Usages

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

Key Usages

72:c6:5b:8b:24:30:5b:df:e0:9b:cd:cf:58:1d:b7:eb:64:3d:bc:90:ce:d2:bf:c5:a9:eb:b7:f9:6d:71:58:8eSigner

Headers

DLL Characteristics

File Characteristics

Imports

mscoree

Sections

.text Size: 143.1MB - Virtual size: 143.1MB

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

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

33:00:00:02:cc:8e:b5:96:a6:bd:d1:c9:4e:00:00:00:00:02:cc
Certificate

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

72:c6:5b:8b:24:30:5b:df:e0:9b:cd:cf:58:1d:b7:eb:64:3d:bc:90:ce:d2:bf:c5:a9:eb:b7:f9:6d:71:58:8e
Signer

.text
Size: 143.1MB - Virtual size: 143.1MB

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

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