iiscors[.]dll | Triage

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General

Target

iiscors.dll
Size

152KB
MD5

89e374da26dc274f118c9e5b68f32e7b
SHA1

ae32e590beecbe2d87dc29c9808a3ac2a02d655a
SHA256

614faf1817d22b4e6922cdd6280bc972bc5e8b166116d46b45a2fbb08acb199b
SHA512

7ee4b3e0a80c90385b465f1b9c005cd6e8475ed2efa202d6f16e3c104aa507bc4774ff7498f25d5b69cfb16678bf2d85b71f8d8cde4312b361ecf47bfc15dcd2
SSDEEP

3072:jmp3UxxQ1eRVeO7bQt1h2oP0zjxlWltx99bOaPtv8U0Yr8u6:jfxceRVeO7bQtz2c0zNlWjTsi87

Score

1^/10

Malware Config

Signatures

Files

iiscors.dll
.dll windows:6 windows x64 arch:x64

5fa5d22637fe141f13eb8f9ab47a49f5

Code Sign

33:00:00:01:87:72:17:72:15:59:40:c7:09:00:00:00:00:01:87
Certificate

Issuer

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

Not Before

04/03/2020, 18:39

Not After

03/03/2021, 18:39

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

98:79:a7:4c:2a:11:ca:36:56:37:76:8f:7f:21:39:8e:0b:7e:84:24:a0:89:7e:c1:d3:7a:a1:65:d4:4e:81:5d
Signer

Actual PE Digest

98:79:a7:4c:2a:11:ca:36:56:37:76:8f:7f:21:39:8e:0b:7e:84:24:a0:89:7e:c1:d3:7a:a1:65:d4:4e:81:5d

Digest Algorithm

sha256

PE Digest Matches

true

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE
IMAGE_FILE_DLL

PDB Paths

E:\A\_work\8\s\runtime\bin\Release\x64\iiscors.pdb

Imports

kernel32

HeapFree
CompareStringOrdinal
GetProcessHeap
DebugBreak
CreateFileW
CloseHandle
WriteConsoleW
SetLastError
GetLastError
HeapReAlloc
HeapAlloc
WideCharToMultiByte
MultiByteToWideChar
RtlCaptureContext
RtlLookupFunctionEntry
RtlVirtualUnwind
UnhandledExceptionFilter
SetUnhandledExceptionFilter
GetCurrentProcess
TerminateProcess
IsProcessorFeaturePresent
QueryPerformanceCounter
GetCurrentProcessId
GetCurrentThreadId
GetSystemTimeAsFileTime
InitializeSListHead
IsDebuggerPresent
GetStartupInfoW
GetModuleHandleW
RtlUnwindEx
RtlPcToFileHeader
RaiseException
InterlockedFlushSList
EncodePointer
EnterCriticalSection
LeaveCriticalSection
DeleteCriticalSection
InitializeCriticalSectionAndSpinCount
TlsAlloc
TlsGetValue
TlsSetValue
TlsFree
FreeLibrary
GetProcAddress
LoadLibraryExW
ExitProcess
GetModuleHandleExW
GetModuleFileNameA
GetACP
GetStdHandle
GetFileType
GetStringTypeW
LCMapStringW
FindClose
FindFirstFileExA
FindNextFileA
IsValidCodePage
GetOEMCP
GetCPInfo
GetCommandLineA
GetCommandLineW
GetEnvironmentStringsW
FreeEnvironmentStringsW
SetStdHandle
HeapSize
WriteFile
GetConsoleCP
GetConsoleMode
SetFilePointerEx
FlushFileBuffers

oleaut32

VariantInit
SysFreeString
SysAllocString
VariantChangeType
GetErrorInfo
VariantClear

Exports

Exports

RegisterModule

Sections

.text
Size: 85KB - Virtual size: 85KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 45KB - Virtual size: 44KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 3KB - Virtual size: 7KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.pdata
Size: 5KB - Virtual size: 5KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.rsrc
Size: 2KB - Virtual size: 1KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 2KB - Virtual size: 1KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

5fa5d22637fe141f13eb8f9ab47a49f5

Code Sign

33:00:00:01:87:72:17:72:15:59:40:c7:09:00:00:00:00:01:87Certificate

Extended Key Usages

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

Key Usages

98:79:a7:4c:2a:11:ca:36:56:37:76:8f:7f:21:39:8e:0b:7e:84:24:a0:89:7e:c1:d3:7a:a1:65:d4:4e:81:5dSigner

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

kernel32

oleaut32

Exports

Exports

Sections

.text Size: 85KB - Virtual size: 85KB

.rdata Size: 45KB - Virtual size: 44KB

.data Size: 3KB - Virtual size: 7KB

.pdata Size: 5KB - Virtual size: 5KB

.rsrc Size: 2KB - Virtual size: 1KB

.reloc Size: 2KB - Virtual size: 1KB

33:00:00:01:87:72:17:72:15:59:40:c7:09:00:00:00:00:01:87
Certificate

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

98:79:a7:4c:2a:11:ca:36:56:37:76:8f:7f:21:39:8e:0b:7e:84:24:a0:89:7e:c1:d3:7a:a1:65:d4:4e:81:5d
Signer

.text
Size: 85KB - Virtual size: 85KB

.rdata
Size: 45KB - Virtual size: 44KB

.data
Size: 3KB - Virtual size: 7KB

.pdata
Size: 5KB - Virtual size: 5KB

.rsrc
Size: 2KB - Virtual size: 1KB

.reloc
Size: 2KB - Virtual size: 1KB