csrssd[.]ex | Triage

Sharing

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General

Target

csrssd.ex
Size

356KB
MD5

f7a940785e299a337c4bbbf258e99870
SHA1

c5d3a9b09646ec75d0f2615edf2da4232ebe4030
SHA256

c3d4c5a96c58493be73d47b0c8a62516d51aa974298c3a8cd8c837bba465268b
SHA512

32bde5d409bb38af57cda069da450bd7a4894dd273aef66dd23b50af285b534b3760f9e131271b180fde1b65a28748c4f6425f9a976053040d84bdd9ef67dce6
SSDEEP

6144:4iucV6ntDwxp9x6jQVw3Ntg+pZUfVWYXVaiWk/YbNeCBl7Pe6kr06:4iuXtDKp9x6SqNORowYbkw/k

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
csrssd.ex

Files

csrssd.ex
.exe windows x86

17b7d61bda0f7478e36d9ce3d4170680

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_RELOCS_STRIPPED
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LINE_NUMS_STRIPPED
IMAGE_FILE_LOCAL_SYMS_STRIPPED
IMAGE_FILE_32BIT_MACHINE

Imports

kernel32

CompareFileTime
SearchPathW
SetFileTime
CloseHandle
GetShortPathNameW
MoveFileW
SetCurrentDirectoryW
GetFileAttributesW
GetLastError
GetFullPathNameW
CreateDirectoryW
Sleep
GetTickCount
CreateFileW
GetFileSize
GetModuleFileNameW
GetCurrentProcess
CopyFileW
ExitProcess
SetEnvironmentVariableW
GetWindowsDirectoryW
SetFileAttributesW
ExpandEnvironmentStringsW
SetErrorMode
LoadLibraryW
lstrlenW
lstrcpynW
GetDiskFreeSpaceW
GlobalUnlock
GlobalLock
CreateThread
CreateProcessW
RemoveDirectoryW
lstrcmpiA
GetTempFileNameW
lstrcpyA
lstrcpyW
lstrcatW
GetSystemDirectoryW
GetVersion
GetProcAddress
LoadLibraryA
GetModuleHandleA
GetModuleHandleW
lstrcmpiW
lstrcmpW
WaitForSingleObject
GlobalFree
GlobalAlloc
LoadLibraryExW
GetExitCodeProcess
FreeLibrary
WritePrivateProfileStringW
GetCommandLineW
GetTempPathW
GetPrivateProfileStringW
FindFirstFileW
FindNextFileW
DeleteFileW
SetFilePointer
MultiByteToWideChar
FindClose
MulDiv
ReadFile
WriteFile
lstrlenA
WideCharToMultiByte

user32

EndDialog
ScreenToClient
GetWindowRect
RegisterClassW
EnableMenuItem
GetSystemMenu
SetClassLongW
IsWindowEnabled
SetWindowPos
GetSysColor
GetWindowLongW
SetCursor
LoadCursorW
CheckDlgButton
GetMessagePos
LoadBitmapW
CallWindowProcW
IsWindowVisible
CloseClipboard
SetClipboardData
wsprintfW
CreateWindowExW
SystemParametersInfoW
AppendMenuW
CreatePopupMenu
GetSystemMetrics
SetDlgItemTextW
GetDlgItemTextW
MessageBoxIndirectW
CharPrevW
CharNextA
wsprintfA
DispatchMessageW
PeekMessageW
ReleaseDC
EnableWindow
InvalidateRect
SendMessageW
DefWindowProcW
BeginPaint
GetClientRect
FillRect
DrawTextW
GetClassInfoW
DialogBoxParamW
CharNextW
ExitWindowsEx
DestroyWindow
CreateDialogParamW
SetTimer
SetWindowTextW
PostQuitMessage
GetDC
SetWindowLongW
LoadImageW
SendMessageTimeoutW
FindWindowExW
EmptyClipboard
OpenClipboard
TrackPopupMenu
EndPaint
ShowWindow
GetDlgItem
IsWindow
SetForegroundWindow

gdi32

SelectObject
SetBkMode
CreateFontIndirectW
SetTextColor
DeleteObject
GetDeviceCaps
CreateBrushIndirect
SetBkColor

shell32

SHGetSpecialFolderLocation
SHGetPathFromIDListW
SHBrowseForFolderW
SHGetFileInfoW
ShellExecuteW
SHFileOperationW

advapi32

RegCloseKey
RegOpenKeyExW
RegDeleteKeyW
RegDeleteValueW
RegEnumValueW
RegCreateKeyExW
RegSetValueExW
RegQueryValueExW
RegEnumKeyW

comctl32

ImageList_Create
ImageList_AddMasked
ImageList_Destroy
ord17

ole32

CoCreateInstance
CoTaskMemFree
OleInitialize
OleUninitialize

version

GetFileVersionInfoSizeW
GetFileVersionInfoW
VerQueryValueW

Sections

.text
Size: 24KB - Virtual size: 23KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 5KB - Virtual size: 4KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 1KB - Virtual size: 128KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.ndata
Size: - Virtual size: 132KB

IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 109KB - Virtual size: 109KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

17b7d61bda0f7478e36d9ce3d4170680

Headers

DLL Characteristics

File Characteristics

Imports

kernel32

user32

gdi32

shell32

advapi32

comctl32

ole32

version

Sections

.text Size: 24KB - Virtual size: 23KB

.rdata Size: 5KB - Virtual size: 4KB

.data Size: 1KB - Virtual size: 128KB

.ndata Size: - Virtual size: 132KB

.rsrc Size: 109KB - Virtual size: 109KB

.text
Size: 24KB - Virtual size: 23KB

.rdata
Size: 5KB - Virtual size: 4KB

.data
Size: 1KB - Virtual size: 128KB

.ndata
Size: - Virtual size: 132KB

.rsrc
Size: 109KB - Virtual size: 109KB