diskext[.]exe | Triage

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General

Target

diskext.exe
Size

332KB
MD5

a1c53a76195fec5c6355727a013f1d18
SHA1

08c46dc5acc20c7130063830c72a9d4975abb098
SHA256

21ac7976db678484dc7823e58d5200aabb01df3556be54d7dbdb5427d7b87ccd
SHA512

923c9c2a67ec6e5be9a211f703513d22dfcce06aa03b02bb709d10a9e9c9aab7dcb39e9051df490c95a5461116c9d7dc1c9c8fe11b25777427b424480552dd95
SSDEEP

6144:K/5XNZtQ+XwSJCqJlEi0G6kSAGLXHXgFRWERxDc3OUK:aN3Q+XwkCElEe6kSjWrU

Score

1^/10

Malware Config

Signatures

Files

diskext.exe
.exe windows x86

5c8c52d61bd68ef4ee11440c7570000c

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

3e:9a:7a:b6:65:df:6a:19:1f:93:22:6d:b2:f9:f9:ed:34:77:87:08:05:f9:4a:40:78:41:fe:6d:27:3b:f0:aa
Signer

Actual PE Digest

3e:9a:7a:b6:65:df:6a:19:1f:93:22:6d:b2:f9:f9:ed:34:77:87:08:05:f9:4a:40:78:41:fe:6d:27:3b:f0:aa

Digest Algorithm

sha256

PE Digest Matches

true

Signature Validations

Trusted

false

Verification

Signing Certificate

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

23-03-2023 16:05
Valid: false

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE

Imports

kernel32

GetDriveTypeA
CreateFileA
VerifyVersionInfoA
HeapReAlloc
HeapSize
ReadConsoleW
FormatMessageA
WriteConsoleW
SetConsoleCtrlHandler
GetProcessHeap
GetStringTypeW
SetEnvironmentVariableW
SetEnvironmentVariableA
FreeEnvironmentStringsW
CloseHandle
DeviceIoControl
GetLastError
VerSetConditionMask
GetModuleFileNameW
GetCommandLineW
GetModuleFileNameA
GetStdHandle
GetModuleHandleA
GetFileType
LocalFree
LocalAlloc
GetProcAddress
GetVersionExA
LoadLibraryExA
SetFilePointerEx
SetLastError
GetEnvironmentStringsW
GetCPInfo
GetOEMCP
IsValidCodePage
FindNextFileW
FindNextFileA
FindFirstFileExW
UnhandledExceptionFilter
SetUnhandledExceptionFilter
GetCurrentProcess
TerminateProcess
IsProcessorFeaturePresent
QueryPerformanceCounter
GetCurrentProcessId
GetCurrentThreadId
GetSystemTimeAsFileTime
InitializeSListHead
IsDebuggerPresent
GetStartupInfoW
GetModuleHandleW
InterlockedPushEntrySList
InterlockedFlushSList
RtlUnwind
EnterCriticalSection
LeaveCriticalSection
DeleteCriticalSection
InitializeCriticalSectionAndSpinCount
TlsAlloc
TlsGetValue
TlsSetValue
TlsFree
FreeLibrary
LoadLibraryExW
EncodePointer
RaiseException
ExitProcess
GetModuleHandleExW
GetConsoleMode
GetNumberOfConsoleInputEvents
PeekConsoleInputA
ReadConsoleInputA
SetConsoleMode
SetStdHandle
WriteFile
MultiByteToWideChar
WideCharToMultiByte
GetCommandLineA
GetACP
GetCurrentThread
HeapFree
HeapAlloc
GetDateFormatW
GetTimeFormatW
CompareStringW
LCMapStringW
GetLocaleInfoW
IsValidLocale
GetUserDefaultLCID
EnumSystemLocalesW
CreateFileW
FlushFileBuffers
GetConsoleCP
ReadFile
OutputDebugStringA
OutputDebugStringW
WaitForSingleObjectEx
CreateThread
FindClose
FindFirstFileExA
DecodePointer

user32

SendMessageA
DialogBoxIndirectParamA
EndDialog
GetDlgItem
SetWindowTextA
SetCursor
LoadCursorA
InflateRect
GetSysColorBrush

gdi32

StartPage
EndDoc
StartDocA
SetMapMode
GetDeviceCaps
EndPage

comdlg32

PrintDlgA

advapi32

RegQueryValueExW
RegQueryValueExA
RegOpenKeyExA
RegOpenKeyA
RegCreateKeyA
RegCloseKey
RegSetValueExA

version

GetFileVersionInfoSizeW
GetFileVersionInfoA
GetFileVersionInfoW
VerQueryValueA
VerQueryValueW
GetFileVersionInfoSizeA

Sections

.text
Size: 247KB - Virtual size: 246KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 62KB - Virtual size: 62KB

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

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 9KB - Virtual size: 8KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

5c8c52d61bd68ef4ee11440c7570000c

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

3e:9a:7a:b6:65:df:6a:19:1f:93:22:6d:b2:f9:f9:ed:34:77:87:08:05:f9:4a:40:78:41:fe:6d:27:3b:f0:aaSigner

Signature Validations

Verification

23-03-2023 16:05 Valid: false

Headers

DLL Characteristics

File Characteristics

Imports

kernel32

user32

gdi32

comdlg32

advapi32

version

Sections

.text Size: 247KB - Virtual size: 246KB

.rdata Size: 62KB - Virtual size: 62KB

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

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

.reloc Size: 9KB - Virtual size: 8KB

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

3e:9a:7a:b6:65:df:6a:19:1f:93:22:6d:b2:f9:f9:ed:34:77:87:08:05:f9:4a:40:78:41:fe:6d:27:3b:f0:aa
Signer

23-03-2023 16:05
Valid: false

.text
Size: 247KB - Virtual size: 246KB

.rdata
Size: 62KB - Virtual size: 62KB

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

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

.reloc
Size: 9KB - Virtual size: 8KB