winlogon[.]bin

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General

Target

winlogon.bin
Size

519KB
MD5

3faae43e3ea66196120464b3660ccf98
SHA1

a02574caa7ed677ac483906cfc30fc1c9f31c060
SHA256

f43504110da2679fe018923e868c71dc3507cb6ed2d43456b430b70dd2d08f38
SHA512

a29204ef667228def8e4dd2c7a4181a3dd6576c4511e4609d319ce196a4d326b2c50b18b9459fcafb3ed9fde6c01a944ad85f0171c30a0ac7ee8f71f5ea15b14
SSDEEP

12288:Sh1Lk70TnvjcW3osqKfZ3R3EYMS3/BdLMTqgUXX0dSbcu:mk70Trcur1MTrUnjD

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
winlogon.bin

Files

winlogon.bin
.exe windows:5 windows x86 arch:x86

bf5a4aa99e5b160f8521cadd6bfe73b8

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_RELOCS_STRIPPED
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE
IMAGE_FILE_32BIT_MACHINE

PDB Paths

Imports

kernel32

RaiseException
GetLastError
MultiByteToWideChar
lstrlenA
InterlockedDecrement
GetProcAddress
LoadLibraryA
FreeResource
SizeofResource
LockResource
LoadResource
FindResourceA
GetModuleHandleA
Module32Next
CloseHandle
Module32First
CreateToolhelp32Snapshot
GetCurrentProcessId
SetEndOfFile
GetStringTypeW
GetStringTypeA
LCMapStringW
LCMapStringA
GetLocaleInfoA
HeapFree
GetProcessHeap
HeapAlloc
GetCommandLineA
HeapCreate
VirtualFree
DeleteCriticalSection
LeaveCriticalSection
EnterCriticalSection
VirtualAlloc
HeapReAlloc
HeapSize
TerminateProcess
GetCurrentProcess
UnhandledExceptionFilter
SetUnhandledExceptionFilter
IsDebuggerPresent
GetModuleHandleW
Sleep
ExitProcess
WriteFile
GetStdHandle
GetModuleFileNameA
WideCharToMultiByte
GetConsoleCP
GetConsoleMode
ReadFile
TlsGetValue
TlsAlloc
TlsSetValue
TlsFree
InterlockedIncrement
SetLastError
GetCurrentThreadId
FlushFileBuffers
SetFilePointer
SetHandleCount
GetFileType
GetStartupInfoA
RtlUnwind
FreeEnvironmentStringsA
GetEnvironmentStrings
FreeEnvironmentStringsW
GetEnvironmentStringsW
QueryPerformanceCounter
GetTickCount
GetSystemTimeAsFileTime
InitializeCriticalSectionAndSpinCount
GetCPInfo
GetACP
GetOEMCP
IsValidCodePage
CompareStringA
CompareStringW
SetEnvironmentVariableA
WriteConsoleA
GetConsoleOutputCP
WriteConsoleW
SetStdHandle
CreateFileA

ole32

OleInitialize

oleaut32

SafeArrayCreate
SafeArrayAccessData
SafeArrayUnaccessData
SafeArrayDestroy
SafeArrayCreateVector
VariantClear
VariantInit
SysFreeString
SysAllocString

Sections

.text
Size: 102KB - Virtual size: 101KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 27KB - Virtual size: 27KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 5KB - Virtual size: 12KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 383KB - Virtual size: 382KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

bf5a4aa99e5b160f8521cadd6bfe73b8

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

kernel32

ole32

oleaut32

Sections

.text Size: 102KB - Virtual size: 101KB

.rdata Size: 27KB - Virtual size: 27KB

.data Size: 5KB - Virtual size: 12KB

.rsrc Size: 383KB - Virtual size: 382KB

.text
Size: 102KB - Virtual size: 101KB

.rdata
Size: 27KB - Virtual size: 27KB

.data
Size: 5KB - Virtual size: 12KB

.rsrc
Size: 383KB - Virtual size: 382KB