csrss[.]exe | Triage

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General

Target

csrss.exe
Size

1.5MB
MD5

a9a67f4c28143ed92ef73d9da90306c5
SHA1

7ce7cbd6afb5a39341fb42cdf4b9479e3c1a6f74
SHA256

592ce0ae57e9052ae46658d4fc0cf3c6b9ba719dfb5ffdfbbcef0b5610e16873
SHA512

f566cb0edf49982c1e4033be1e9310706dc2d34cc673d9c7bb0d5f1786bc24aafb43df63935ccc0cda4c3c07345aaf75335d3ad25baa4419c6f1b51fac9b9394
SSDEEP

24576:z67dEUCkJpJ8GL5URoQVYu0QVbkst49L7QZMT99DnqE9RFM:zMdEZCS+QVYu0S4yhM/nbk

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
csrss.exe

Files

csrss.exe
.exe windows:6 windows x64 arch:x64

a1cf45dec04fc5487fe7d80f8d671a4d

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE

PDB Paths

C:\Users\Administrator\Desktop\新版本菜单\x64\Release\csrss.pdb

Imports

ws2_32

recvfrom
sendto
inet_addr
htons
closesocket
connect
inet_ntoa
recv
send
gethostbyname
socket
WSACleanup
WSAStartup
bind

kernel32

MultiByteToWideChar
WideCharToMultiByte
VerSetConditionMask
QueryPerformanceCounter
QueryPerformanceFrequency
FreeLibrary
GetModuleHandleA
GetModuleHandleW
GetProcAddress
LoadLibraryA
GetStdHandle
CreateFileA
WriteFile
CloseHandle
Sleep
GetCommState
SetCommState
SetCommTimeouts
GetPrivateProfileStringA
SetConsoleTextAttribute
GetConsoleWindow
CreateThread
IsValidCodePage
FindNextFileW
FindFirstFileExW
FindClose
GetProcessHeap
HeapQueryInformation
HeapReAlloc
HeapFree
GetFileSizeEx
SetFilePointerEx
ReadConsoleW
GetConsoleMode
GetConsoleOutputCP
FlushFileBuffers
EnumSystemLocalesW
GetUserDefaultLCID
IsValidLocale
GetLocaleInfoW
LCMapStringW
CompareStringW
FlsFree
FlsSetValue
FlsGetValue
FlsAlloc
OutputDebugStringW
GetCommandLineW
GetCommandLineA
GlobalFree
ResumeThread
ExitThread
ExitProcess
GetSystemInfo
HeapValidate
HeapSize
HeapAlloc
WriteConsoleW
GetModuleHandleExW
GetModuleFileNameW
GetFileType
LoadLibraryExW
TlsFree
TlsSetValue
TlsGetValue
TlsAlloc
InitializeCriticalSectionAndSpinCount
SetLastError
GetLastError
GlobalLock
GlobalUnlock
GlobalAlloc
GetACP
GetOEMCP
GetEnvironmentStringsW
FreeEnvironmentStringsW
SetEnvironmentVariableW
SetStdHandle
GetFileAttributesExW
SetEndOfFile
RaiseException
RtlPcToFileHeader
RtlUnwindEx
CreateProcessA
GetExitCodeProcess
PeekNamedPipe
LoadLibraryW
VirtualProtect
CreateProcessW
WaitForSingleObject
InitializeCriticalSection
DeviceIoControl
CreatePipe
GetVolumeInformationA
ReadFile
CreateFileW
GetCPInfo
GetStringTypeW
LCMapStringEx
DecodePointer
EncodePointer
FreeLibraryAndExitThread
ReleaseSRWLockExclusive
RtlUnwind
AcquireSRWLockExclusive
WakeAllConditionVariable
SleepConditionVariableSRW
RtlCaptureContext
RtlLookupFunctionEntry
RtlVirtualUnwind
UnhandledExceptionFilter
SetUnhandledExceptionFilter
GetCurrentProcess
TerminateProcess
IsProcessorFeaturePresent
IsDebuggerPresent
GetStartupInfoW
GetCurrentProcessId
GetCurrentThreadId
GetSystemTimeAsFileTime
InitializeSListHead
WaitForSingleObjectEx
GetExitCodeThread
EnterCriticalSection
LeaveCriticalSection
InitializeCriticalSectionEx
DeleteCriticalSection

user32

CloseClipboard
OpenClipboard
SetClipboardData
GetClipboardData
WaitForInputIdle
EmptyClipboard
TrackMouseEvent
DefWindowProcW
UnregisterClassW
RegisterClassExW
CreateWindowExW
IsChild
DestroyWindow
ShowWindow
SetLayeredWindowAttributes
SetWindowPos
IsIconic
BringWindowToTop
SetFocus
GetKeyState
GetCapture
SetCapture
ReleaseCapture
GetForegroundWindow
SetForegroundWindow
GetDC
ReleaseDC
SetWindowTextW
GetClientRect
AdjustWindowRectEx
SetCursorPos
SetCursor
UpdateWindow
GetSystemMetrics
GetAsyncKeyState
PostQuitMessage
PeekMessageW
DispatchMessageW
TranslateMessage
EnumDisplayMonitors
GetMonitorInfoW
MonitorFromWindow
GetCursorPos
SetWindowLongW
GetWindowLongW
WindowFromPoint
ScreenToClient
ClientToScreen
LoadCursorW

gdi32

CreateRectRgn
DeleteObject
GetDeviceCaps

imm32

ImmReleaseContext
ImmGetContext
ImmAssociateContextEx
ImmSetCompositionWindow
ImmSetCandidateWindow

d3dcompiler_43

D3DCompile

dwmapi

DwmEnableBlurBehindWindow
DwmIsCompositionEnabled
DwmGetColorizationColor

vmm

VMMDLL_WinReg_QueryValueExU
VMMDLL_ProcessGetModuleBaseU
VMMDLL_ProcessGetInformationAll
VMMDLL_PidGetFromName
VMMDLL_Initialize
VMMDLL_Close
VMMDLL_MemFree
VMMDLL_ConfigSet
VMMDLL_MemReadEx
VMMDLL_Scatter_Initialize
VMMDLL_Scatter_Prepare
VMMDLL_Scatter_PrepareEx
VMMDLL_Scatter_ExecuteRead
VMMDLL_Scatter_Read
VMMDLL_Scatter_Clear
VMMDLL_Scatter_CloseHandle
VMMDLL_Map_GetModuleFromNameU
VMMDLL_Map_GetEATU

d3d11

D3D11CreateDeviceAndSwapChain

d3dx9_43

D3DXVec3Project

setupapi

SetupDiDestroyDeviceInfoList
SetupDiGetClassDevsA
SetupDiGetDeviceRegistryPropertyA
SetupDiEnumDeviceInfo

iphlpapi

GetAdaptersInfo

Sections

.text
Size: 1.1MB - Virtual size: 1.1MB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 292KB - Virtual size: 291KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 6KB - Virtual size: 71KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.pdata
Size: 47KB - Virtual size: 47KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

_RDATA
Size: 512B - Virtual size: 500B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 3KB - Virtual size: 3KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

a1cf45dec04fc5487fe7d80f8d671a4d

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

ws2_32

kernel32

user32

gdi32

imm32

d3dcompiler_43

dwmapi

vmm

d3d11

d3dx9_43

setupapi

iphlpapi

Sections

.text Size: 1.1MB - Virtual size: 1.1MB

.rdata Size: 292KB - Virtual size: 291KB

.data Size: 6KB - Virtual size: 71KB

.pdata Size: 47KB - Virtual size: 47KB

_RDATA Size: 512B - Virtual size: 500B

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

.reloc Size: 3KB - Virtual size: 3KB

.text
Size: 1.1MB - Virtual size: 1.1MB

.rdata
Size: 292KB - Virtual size: 291KB

.data
Size: 6KB - Virtual size: 71KB

.pdata
Size: 47KB - Virtual size: 47KB

_RDATA
Size: 512B - Virtual size: 500B

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

.reloc
Size: 3KB - Virtual size: 3KB