2024-04-25_87f7d219a994df4a94db42ca9a8204bb_ryuk

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General

Target

2024-04-25_87f7d219a994df4a94db42ca9a8204bb_ryuk
Size

10.9MB
MD5

87f7d219a994df4a94db42ca9a8204bb
SHA1

72d586c808e11dbb856d8ba13273f4344711f895
SHA256

ce07aa50f9613dc8ab5ef6ce988c5518f2335d88089df29cf609bd20d8880751
SHA512

c48900359db70b8b57cc47d4175a5175a942db6cf4af7b4cf82a5fbb2018a8a1f56f9f3cea9141db3842598ee6bbf6afcec69953111d6a4c5efb2cc0f25c9f63
SSDEEP

98304:0jVE56s9v8Zmc6Yj6HqfUhcXuA4DsSbJrFNQT6TMDMFb1D527BWG:WVX48wG6Hx/dpFi+T7VQBWG

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
2024-04-25_87f7d219a994df4a94db42ca9a8204bb_ryuk

Files

2024-04-25_87f7d219a994df4a94db42ca9a8204bb_ryuk
.exe windows:5 windows x64 arch:x64

ca03c39c49a7b996b705117bf36d1e61

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:\jenkins\x64-release\src\out\Release\brave_vpn_wireguard_service.exe.pdb

Imports

api-ms-win-core-winrt-error-l1-1-0

RoOriginateError

advapi32

AddAce
BuildExplicitAccessWithNameW
BuildSecurityDescriptorW
BuildTrusteeWithSidW
ChangeServiceConfig2W
ChangeServiceConfigW
CloseServiceHandle
ControlService
ConvertStringSecurityDescriptorToSecurityDescriptorW
ConvertStringSidToSidW
CopySid
CreateProcessAsUserW
CreateServiceW
DeleteService
GetAclInformation
GetLengthSid
GetNamedSecurityInfoW
GetSecurityDescriptorControl
GetSecurityDescriptorDacl
GetSecurityDescriptorGroup
GetSecurityDescriptorOwner
GetSecurityDescriptorSacl
GetSidLengthRequired
GetSidSubAuthority
ImpersonateNamedPipeClient
InitializeAcl
InitializeSecurityDescriptor
InitializeSid
IsValidAcl
IsValidSecurityDescriptor
IsValidSid
MakeAbsoluteSD
NotifyServiceStatusChangeW
OpenProcessToken
OpenSCManagerW
OpenServiceW
QueryServiceConfigW
QueryServiceStatus
RegCloseKey
RegCreateKeyExW
RegDeleteKeyExW
RegDeleteValueW
RegEnumKeyExW
RegEnumValueW
RegNotifyChangeKeyValue
RegOpenKeyExW
RegQueryInfoKeyW
RegQueryValueExA
RegQueryValueExW
RegSetValueExW
RegisterServiceCtrlHandlerW
RevertToSelf
SetEntriesInAclW
SetNamedSecurityInfoW
SetSecurityDescriptorDacl
SetSecurityDescriptorGroup
SetSecurityDescriptorOwner
SetSecurityInfo
SetServiceStatus
StartServiceCtrlDispatcherW
StartServiceW

dbghelp

SymCleanup
SymFromAddr
SymGetLineFromAddr64
SymGetSearchPathW
SymInitialize
SymSetOptions
SymSetSearchPathW

oleaut32

SysAllocString

shell32

CommandLineToArgvW
ord680
SHGetFolderPathW
SHGetKnownFolderPath
ShellExecuteA
ShellExecuteExW
Shell_NotifyIconW

user32

AllowSetForegroundWindow
CreateIconIndirect
CreatePopupMenu
CreateWindowExW
DefWindowProcW
DestroyIcon
DestroyMenu
DestroyWindow
DispatchMessageW
DrawEdge
DrawFocusRect
DrawFrameControl
DrawIconEx
EnumDisplayDevicesW
FillRect
FindWindowExW
FrameRect
GetActiveWindow
GetClassInfoExW
GetCursorPos
GetDC
GetDesktopWindow
GetGuiResources
GetIconInfo
GetMessageW
GetQueueStatus
GetSysColor
GetSysColorBrush
GetSystemMetrics
GetWindowLongPtrW
GetWindowThreadProcessId
InflateRect
InsertMenuItemW
InvertRect
IsWindow
KillTimer
LoadImageW
MsgWaitForMultipleObjectsEx
PeekMessageW
PostMessageW
PostQuitMessage
RegisterClassExW
RegisterClassW
RegisterWindowMessageW
ReleaseDC
SendMessageW
SetForegroundWindow
SetMenuInfo
SetTimer
SetWindowLongPtrW
SetWindowPos
SystemParametersInfoW
TrackPopupMenuEx
TranslateMessage
UnregisterClassW
wsprintfW

ws2_32

WSACloseEvent
WSACreateEvent
WSAEnumNetworkEvents
WSAEventSelect
WSAGetLastError
WSAGetOverlappedResult
WSAResetEvent
WSAStartup
accept
closesocket
getsockname
ioctlsocket
recv
recvfrom
sendto
shutdown

kernel32

AcquireSRWLockExclusive
AddVectoredExceptionHandler
AssignProcessToJobObject
CloseHandle
CompareStringW
ConnectNamedPipe
CopyFileW
CreateDirectoryW
CreateEventW
CreateFileA
CreateFileMappingW
CreateFileW
CreateIoCompletionPort
CreateNamedPipeW
CreateProcessW
CreateSemaphoreW
CreateThread
CreateToolhelp32Snapshot
DecodePointer
DeleteCriticalSection
DeleteFileW
DeleteProcThreadAttributeList
DisconnectNamedPipe
DuplicateHandle
EncodePointer
EnterCriticalSection
EnumSystemLocalesW
ExitProcess
ExitThread
ExpandEnvironmentStringsW
FileTimeToSystemTime
FindClose
FindFirstFileExW
FindNextFileW
FindResourceW
FlsAlloc
FlsFree
FlsGetValue
FlsSetValue
FlushFileBuffers
FlushViewOfFile
FormatMessageA
FormatMessageW
FreeEnvironmentStringsW
FreeLibrary
FreeLibraryAndExitThread
GetACP
GetCPInfo
GetCommandLineA
GetCommandLineW
GetConsoleMode
GetConsoleOutputCP
GetCurrentDirectoryW
GetCurrentProcess
GetCurrentProcessId
GetCurrentThread
GetCurrentThreadId
GetDateFormatW
GetDriveTypeW
GetEnvironmentStringsW
GetEnvironmentVariableW
GetExitCodeProcess
GetFileAttributesExW
GetFileAttributesW
GetFileInformationByHandle
GetFileInformationByHandleEx
GetFileSizeEx
GetFileTime
GetFileType
GetFullPathNameW
GetLastError
GetLocalTime
GetLocaleInfoEx
GetLocaleInfoW
GetLogicalProcessorInformation
GetLogicalProcessorInformationEx
GetLongPathNameW
GetModuleFileNameW
GetModuleHandleA
GetModuleHandleExA
GetModuleHandleExW
GetModuleHandleW
GetNativeSystemInfo
GetOEMCP
GetProcAddress
GetProcessHandleCount
GetProcessHeap
GetProcessId
GetProcessMitigationPolicy
GetProcessTimes
GetProductInfo
GetQueuedCompletionStatus
GetStartupInfoW
GetStdHandle
GetStringTypeW
GetSystemDefaultLCID
GetSystemDirectoryW
GetSystemInfo
GetSystemTimeAsFileTime
GetTempPathW
GetThreadContext
GetThreadId
GetThreadLocale
GetThreadPriority
GetTickCount
GetTimeFormatW
GetTimeZoneInformation
GetUserDefaultLCID
GetUserDefaultLangID
GetVersionExW
GetWindowsDirectoryW
HeapAlloc
HeapDestroy
HeapFree
HeapReAlloc
HeapSetInformation
HeapSize
InitOnceExecuteOnce
InitializeConditionVariable
InitializeCriticalSection
InitializeCriticalSectionAndSpinCount
InitializeCriticalSectionEx
InitializeProcThreadAttributeList
InitializeSListHead
IsDebuggerPresent
IsProcessorFeaturePresent
IsValidCodePage
IsValidLocale
IsWow64Process
K32GetModuleInformation
K32GetPerformanceInfo
K32GetProcessMemoryInfo
K32QueryWorkingSetEx
LCMapStringW
LeaveCriticalSection
LoadLibraryExA
LoadLibraryExW
LoadLibraryW
LoadResource
LocalFree
LockFileEx
LockResource
MapViewOfFile
MoveFileExW
MoveFileW
MultiByteToWideChar
OpenProcess
OutputDebugStringA
OutputDebugStringW
PeekNamedPipe
PostQueuedCompletionStatus
Process32FirstW
Process32NextW
QueryPerformanceCounter
QueryPerformanceFrequency
QueryThreadCycleTime
RaiseException
ReadConsoleW
ReadFile
ReadProcessMemory
RegisterWaitForSingleObject
ReleaseSRWLockExclusive
ReleaseSemaphore
RemoveDirectoryW
RemoveVectoredExceptionHandler
ReplaceFileW
ResetEvent
ResumeThread
RtlCaptureContext
RtlCaptureStackBackTrace
RtlLookupFunctionEntry
RtlPcToFileHeader
RtlUnwind
RtlUnwindEx
RtlVirtualUnwind
SetConsoleCtrlHandler
SetCurrentDirectoryW
SetEndOfFile
SetEnvironmentVariableW
SetEvent
SetFileAttributesW
SetFilePointerEx
SetHandleInformation
SetLastError
SetNamedPipeHandleState
SetProcessShutdownParameters
SetStdHandle
SetThreadInformation
SetThreadPriority
SetUnhandledExceptionFilter
SizeofResource
Sleep
SleepConditionVariableSRW
SleepEx
SuspendThread
SwitchToThread
SystemTimeToTzSpecificLocalTime
TerminateProcess
TlsAlloc
TlsFree
TlsGetValue
TlsSetValue
TransactNamedPipe
TryAcquireSRWLockExclusive
UnhandledExceptionFilter
UnlockFileEx
UnmapViewOfFile
UnregisterWaitEx
UpdateProcThreadAttribute
VerSetConditionMask
VerifyVersionInfoW
VirtualAlloc
VirtualFree
VirtualProtect
VirtualQuery
VirtualQueryEx
WaitForSingleObject
WaitForSingleObjectEx
WaitNamedPipeW
WakeAllConditionVariable
WakeConditionVariable
WerRegisterRuntimeExceptionModule
WideCharToMultiByte
Wow64GetThreadContext
WriteConsoleW
WriteFile
lstrcmpiW
lstrlenA

ole32

CoAddRefServerProcess
CoCreateInstance
CoInitializeEx
CoInitializeSecurity
CoRegisterClassObject
CoRegisterInitializeSpy
CoReleaseServerProcess
CoResumeClassObjects
CoRevokeClassObject
CoRevokeInitializeSpy
CoSetProxyBlanket
CoTaskMemFree
CoUninitialize

rasapi32

RasConnectionNotificationW
RasDialW
RasEnumConnectionsW
RasGetConnectStatusW
RasGetCredentialsW
RasGetErrorStringW
RasHangUpW
RasValidateEntryNameW

api-ms-win-core-winrt-l1-1-0

RoActivateInstance
RoGetActivationFactory
RoInitialize
RoUninitialize

api-ms-win-core-winrt-string-l1-1-0

WindowsCreateString
WindowsDeleteString

ntdll

NtClose
NtDeleteKey
NtOpenKeyEx
NtQueryValueKey
RtlFormatCurrentUserKeyPath
RtlFreeUnicodeString
RtlInitUnicodeString

winmm

timeBeginPeriod
timeEndPeriod
timeGetTime

userenv

CreateEnvironmentBlock
DestroyEnvironmentBlock

shlwapi

PathMatchSpecW

version

GetFileVersionInfoSizeW
GetFileVersionInfoW
VerQueryValueW

gdi32

BitBlt
CreateBitmap
CreateCompatibleBitmap
CreateCompatibleDC
CreateDIBSection
CreateFontIndirectW
CreateRectRgn
CreateSolidBrush
DeleteDC
DeleteObject
GetCurrentObject
GetDeviceCaps
GetObjectW
GetStockObject
GetTextMetricsW
GetWorldTransform
ModifyWorldTransform
SelectClipRgn
SelectObject
SetArcDirection
SetBkColor
SetBkMode
SetBrushOrgEx
SetDCBrushColor
SetDCPenColor
SetGraphicsMode
SetROP2
SetStretchBltMode
SetTextColor
SetWorldTransform
StretchBlt

uxtheme

CloseThemeData
DrawThemeBackground
ord47
GetThemeBackgroundContentRect
GetThemePartSize
OpenThemeData

winhttp

WinHttpAddRequestHeaders
WinHttpCloseHandle
WinHttpConnect
WinHttpCrackUrl
WinHttpOpen
WinHttpOpenRequest
WinHttpQueryHeaders
WinHttpReadData
WinHttpReceiveResponse
WinHttpSendRequest
WinHttpSetOption
WinHttpSetTimeouts
WinHttpWriteData

dwrite

DWriteCreateFactory

Exports

Exports

GetHandleVerifier

Sections

.text
Size: 6.1MB - Virtual size: 6.1MB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 1.0MB - Virtual size: 1.0MB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 75KB - Virtual size: 132KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.pdata
Size: 162KB - Virtual size: 162KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.gxfg
Size: 13KB - Virtual size: 13KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.retplne
Size: 512B - Virtual size: 188B

.rodata
Size: 2KB - Virtual size: 2KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.tls
Size: 1024B - Virtual size: 585B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

CPADinfo
Size: 512B - Virtual size: 56B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

LZMADEC
Size: 4KB - Virtual size: 4KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

_RDATA
Size: 512B - Virtual size: 348B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

malloc_h
Size: 512B - Virtual size: 228B

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rsrc
Size: 3.0MB - Virtual size: 3.0MB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 596KB - Virtual size: 600KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

Sharing

General

Malware Config

Signatures

Files

ca03c39c49a7b996b705117bf36d1e61

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

api-ms-win-core-winrt-error-l1-1-0

advapi32

dbghelp

oleaut32

shell32

user32

ws2_32

kernel32

ole32

rasapi32

api-ms-win-core-winrt-l1-1-0

api-ms-win-core-winrt-string-l1-1-0

ntdll

winmm

userenv

shlwapi

version

gdi32

uxtheme

winhttp

dwrite

Exports

Exports

Sections

.text Size: 6.1MB - Virtual size: 6.1MB

.rdata Size: 1.0MB - Virtual size: 1.0MB

.data Size: 75KB - Virtual size: 132KB

.pdata Size: 162KB - Virtual size: 162KB

.gxfg Size: 13KB - Virtual size: 13KB

.retplne Size: 512B - Virtual size: 188B

.rodata Size: 2KB - Virtual size: 2KB

.tls Size: 1024B - Virtual size: 585B

CPADinfo Size: 512B - Virtual size: 56B

LZMADEC Size: 4KB - Virtual size: 4KB

_RDATA Size: 512B - Virtual size: 348B

malloc_h Size: 512B - Virtual size: 228B

.rsrc Size: 3.0MB - Virtual size: 3.0MB

.reloc Size: 596KB - Virtual size: 600KB

.text
Size: 6.1MB - Virtual size: 6.1MB

.rdata
Size: 1.0MB - Virtual size: 1.0MB

.data
Size: 75KB - Virtual size: 132KB

.pdata
Size: 162KB - Virtual size: 162KB

.gxfg
Size: 13KB - Virtual size: 13KB

.retplne
Size: 512B - Virtual size: 188B

.rodata
Size: 2KB - Virtual size: 2KB

.tls
Size: 1024B - Virtual size: 585B

CPADinfo
Size: 512B - Virtual size: 56B

LZMADEC
Size: 4KB - Virtual size: 4KB

_RDATA
Size: 512B - Virtual size: 348B

malloc_h
Size: 512B - Virtual size: 228B

.rsrc
Size: 3.0MB - Virtual size: 3.0MB

.reloc
Size: 596KB - Virtual size: 600KB