2024-03-30_b4c13f6033d5a75654e5d8836918cc65_ryuk

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General

Target

2024-03-30_b4c13f6033d5a75654e5d8836918cc65_ryuk
Size

396KB
MD5

b4c13f6033d5a75654e5d8836918cc65
SHA1

7344a966ad1239698a9bf6615eb4dea25f49d934
SHA256

84ad8981730bc90d066598f9d840998261265c043d19f5514108d725889538cb
SHA512

43c4e712a86734c40a0bfcbaf21e1731941de4a959f48e9babbc8ee967e8130556079687e61adb4ab44475ac63e70ec8e0601ac5926c87d66553e18797d562be
SSDEEP

6144:cFb35BvvhYO7u1wq5e1WnLWXw8iIXjsI7iB/zYO+ARmi0yqCH:mFBnZq5e1WnuV8zR+fig

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

Processes:

resource
2024-03-30_b4c13f6033d5a75654e5d8836918cc65_ryuk

Files

2024-03-30_b4c13f6033d5a75654e5d8836918cc65_ryuk
.exe windows:5 windows x64 arch:x64

e48969128dd7c8eda6f5d2cb1ad98632

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE

PDB Paths

C:\Work\AutoScroll\19H1\GFVV33WW\SRC\recv\obj\AMD64\virtscrl.pdb

Imports

kernel32

CreateThread
TerminateThread
GetExitCodeThread
ResumeThread
ProcessIdToSessionId
OpenProcess
GetVersionExA
GetModuleFileNameA
GetModuleHandleA
GetProcAddress
LoadLibraryA
LocalFree
GetShortPathNameA
lstrcmpA
lstrcmpiA
GetCurrentProcessId
Sleep
OpenEventA
CreateEventA
CreateMutexA
ReleaseMutex
SetEvent
CancelIo
GetOverlappedResult
SetLastError
WriteConsoleW
CreateFileW
GetLastError
GetConsoleMode
GetConsoleCP
FlushFileBuffers
HeapReAlloc
HeapSize
SetConsoleCtrlHandler
GetProcessHeap
LCMapStringW
CompareStringW
GetTimeFormatW
GetDateFormatW
OutputDebugStringW
OutputDebugStringA
EnumSystemLocalesW
GetUserDefaultLCID
IsValidLocale
GetLocaleInfoW
GetStringTypeW
GetFileType
SetStdHandle
SetEnvironmentVariableW
SetEnvironmentVariableA
FreeEnvironmentStringsW
GetEnvironmentStringsW
GetCommandLineW
GetCPInfo
GetOEMCP
IsValidCodePage
FindNextFileW
FindNextFileA
FindFirstFileExW
FindFirstFileExA
FindClose
GetCurrentThread
HeapAlloc
HeapFree
GetACP
GetModuleHandleExW
CloseHandle
CreateFileA
ExpandEnvironmentStringsA
SetFilePointerEx
GetCommandLineA
ExitProcess
WideCharToMultiByte
MultiByteToWideChar
GetModuleFileNameW
WriteFile
GetStdHandle
LoadLibraryExW
FreeLibrary
TlsFree
TlsSetValue
RtlCaptureContext
RtlLookupFunctionEntry
RtlVirtualUnwind
UnhandledExceptionFilter
SetUnhandledExceptionFilter
GetCurrentProcess
TerminateProcess
IsProcessorFeaturePresent
QueryPerformanceCounter
GetCurrentThreadId
GetSystemTimeAsFileTime
InitializeSListHead
IsDebuggerPresent
GetStartupInfoW
GetModuleHandleW
RtlUnwindEx
InterlockedPushEntrySList
InterlockedFlushSList
EnterCriticalSection
LeaveCriticalSection
DeleteCriticalSection
InitializeCriticalSectionAndSpinCount
TlsAlloc
TlsGetValue
RaiseException

advapi32

SetEntriesInAclA
FreeSid
ImpersonateLoggedOnUser
RevertToSelf
RegCloseKey
SetNamedSecurityInfoA
AllocateAndInitializeSid
RegQueryValueExA
RegOpenKeyExA

user32

GetWindowRgn
GetMessageA
TranslateMessage
RegisterRawInputDevices
GetRawInputData
UnhookWinEvent
SetWinEventHook
EnumDisplayDevicesA
EnumDisplaySettingsA
GetWindowThreadProcessId
GetClassNameA
FindWindowA
GetParent
GetDesktopWindow
SetWindowLongPtrA
GetWindowLongPtrA
PtInRect
InflateRect
DispatchMessageA
GetCursorPos
GetWindowRect
WindowFromPoint
SetWindowRgn
GetForegroundWindow
GetSystemMetrics
MsgWaitForMultipleObjects
SendInput
GetKeyState
IsZoomed
IsWindowVisible
SetWindowPos
DestroyWindow
CreateWindowExA
RegisterClassExA
PostQuitMessage
DefWindowProcA
PostThreadMessageA
PostMessageA
SendMessageTimeoutA
PeekMessageA

gdi32

CombineRgn
CreateRectRgn
DeleteObject
PtInRegion

shell32

SHAppBarMessage

wtsapi32

WTSQueryUserToken
WTSUnRegisterSessionNotification
WTSRegisterSessionNotification

shlwapi

StrRChrA
StrStrA
PathFileExistsA

Sections

.text
Size: 285KB - Virtual size: 285KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 66KB - Virtual size: 65KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 6KB - Virtual size: 13KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.pdata
Size: 17KB - Virtual size: 16KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.gfids
Size: 512B - Virtual size: 352B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

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

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

.zero
Size: 8KB - Virtual size: 4KB

IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

e48969128dd7c8eda6f5d2cb1ad98632

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

kernel32

advapi32

user32

gdi32

shell32

wtsapi32

shlwapi

Sections

.text Size: 285KB - Virtual size: 285KB

.rdata Size: 66KB - Virtual size: 65KB

.data Size: 6KB - Virtual size: 13KB

.pdata Size: 17KB - Virtual size: 16KB

.gfids Size: 512B - Virtual size: 352B

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

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

.zero Size: 8KB - Virtual size: 4KB

.text
Size: 285KB - Virtual size: 285KB

.rdata
Size: 66KB - Virtual size: 65KB

.data
Size: 6KB - Virtual size: 13KB

.pdata
Size: 17KB - Virtual size: 16KB

.gfids
Size: 512B - Virtual size: 352B

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

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

.zero
Size: 8KB - Virtual size: 4KB