2024-04-16_c9c2caf55108dce8fd9eca740064f225_ryuk

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General

Target

2024-04-16_c9c2caf55108dce8fd9eca740064f225_ryuk
Size

10.3MB
MD5

c9c2caf55108dce8fd9eca740064f225
SHA1

48a085e6c452eeebaef26e43913771093077bff3
SHA256

eae535f53d14d2a158a70e802648bd542764ca2ea3c69895b908eb407aef5c3f
SHA512

b2fc4dd97312081df9aefc476f94020c7ae75e3040b9d0285fe8a0a9db9b78c6f51e3793317bb07634543807074c85324985f55d0c8f9dfb71e44412d83cfae9
SSDEEP

196608:lfnVLPl/RBEVK3rdRS4KYG2NHZwfFl/nDa8hT0QMv1:l/Vp/RBEVK3rdRS4KYGl/PD5s

Score

10^/10

Malware Config

Signatures

Detects Windows executables referencing non-Windows User-Agents 1 IoCs

resource	yara_rule
sample	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
2024-04-16_c9c2caf55108dce8fd9eca740064f225_ryuk

Files

2024-04-16_c9c2caf55108dce8fd9eca740064f225_ryuk
.exe windows:5 windows x64 arch:x64

f0c170bc7b530fc5a8c5f40c5c2b0e83

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_GUARD_CF
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE

PDB Paths

C:\build\src\out-x64\ffmpeg\chromedriver.exe.pdb

Imports

advapi32

CreateProcessAsUserW
SystemFunction036
InitializeSecurityDescriptor
SetSecurityDescriptorDacl
RegCloseKey
RegCreateKeyExW
RegNotifyChangeKeyValue
RegOpenKeyExW
RegQueryValueExW
RegOpenKeyExA
RegQueryValueExA

dbghelp

SymSetOptions
SymGetLineFromAddr64
SymInitialize
SymGetSearchPathW
SymSetSearchPathW
SymFromAddr

gdi32

SetBkMode
SetGraphicsMode
SetTextColor
SetTextAlign
GetTextMetricsW
SetWorldTransform
CreateDIBSection
ExtTextOutW
GetTextFaceW
GdiFlush
CreateFontIndirectW
DeleteDC
DeleteObject
EnumFontFamiliesExW
GetCharABCWidthsW
GetFontData
GetGlyphOutlineW
GetOutlineTextMetricsW
GetFontUnicodeRanges
GetGlyphIndicesW
GetTextExtentPointI
AddFontMemResourceEx
RemoveFontMemResourceEx
CreateCompatibleDC
SelectObject

kernel32

WaitForSingleObject
Sleep
GetCurrentProcess
CreateThread
GetCurrentThread
GetCurrentThreadId
SetThreadPriority
GetThreadPriority
GetThreadId
QueryPerformanceCounter
QueryPerformanceFrequency
GetSystemTimeAsFileTime
QueryThreadCycleTime
SystemTimeToTzSpecificLocalTime
TzSpecificLocalTimeToSystemTime
FileTimeToSystemTime
SystemTimeToFileTime
CreateDirectoryW
GetFileAttributesW
GetFileAttributesExW
GetLongPathNameW
ReadFile
RemoveDirectoryW
SetFileAttributesW
GetTempPathW
CreateFileMappingW
MapViewOfFile
UnmapViewOfFile
MoveFileW
MoveFileExW
ReplaceFileW
TerminateProcess
GetExitCodeProcess
GetStdHandle
SetHandleInformation
ResumeThread
CreateProcessW
GetProcessId
AssignProcessToJobObject
GetDiskFreeSpaceExW
GlobalMemoryStatusEx
FindClose
FindFirstFileExW
FindNextFileW
SetEvent
ResetEvent
CreateEventW
AcquireSRWLockExclusive
InitializeConditionVariable
WakeConditionVariable
WakeAllConditionVariable
SleepConditionVariableSRW
HeapAlloc
HeapReAlloc
HeapFree
HeapSize
RtlCaptureStackBackTrace
SetUnhandledExceptionFilter
GetModuleHandleW
GetQueuedCompletionStatus
PostQueuedCompletionStatus
TlsAlloc
TlsSetValue
TlsFree
GetModuleHandleExW
FlushFileBuffers
GetFileInformationByHandle
GetFileSizeEx
SetEndOfFile
SetFilePointerEx
SetFileTime
TlsGetValue
GetNativeSystemInfo
GetProcessTimes
GetSystemDirectoryW
RaiseException
QueueUserWorkItem
ReleaseSRWLockShared
AcquireSRWLockShared
LoadLibraryW
ExpandEnvironmentStringsW
UnregisterWaitEx
RegisterWaitForSingleObject
FormatMessageW
GlobalFree
LoadLibraryExW
SetFilePointer
CancelIo
InitializeSRWLock
EnterCriticalSection
LeaveCriticalSection
InitializeCriticalSectionAndSpinCount
InitOnceExecuteOnce
RtlVirtualUnwind
GetTimeZoneInformation
GetTimeFormatEx
GetDateFormatEx
ResolveLocaleName
GetLocaleInfoEx
GetNumberFormatEx
GetCurrencyFormatEx
FreeLibrary
GetUserDefaultLocaleName
InitializeCriticalSection
GetGeoInfoW
GetUserGeoID
CreateFileA
ReleaseSemaphore
CreateSemaphoreW
MultiByteToWideChar
WideCharToMultiByte
DeleteCriticalSection
FindFirstFileExA
GetOEMCP
IsValidCodePage
EnumSystemLocalesW
GetUserDefaultLCID
IsValidLocale
GetCommandLineA
GetModuleFileNameA
GetACP
GetDriveTypeW
ReadConsoleW
GetFileType
SetStdHandle
GetFullPathNameW
GetConsoleMode
GetConsoleCP
InterlockedPushEntrySList
RtlPcToFileHeader
RtlUnwindEx
GetStartupInfoW
InitializeSListHead
IsProcessorFeaturePresent
UnhandledExceptionFilter
RtlLookupFunctionEntry
RtlCaptureContext
WaitForSingleObjectEx
GetCPInfo
GetLocaleInfoW
LCMapStringW
CompareStringW
DecodePointer
EncodePointer
GetStringTypeW
LocalFree
GetCommandLineW
FormatMessageA
GetModuleFileNameW
GetTickCount
GetLocalTime
GetCurrentProcessId
SetLastError
GetLastError
DuplicateHandle
IsDebuggerPresent
GetWindowsDirectoryW
GetProcAddress
CloseHandle
OutputDebugStringA
WriteFile
DeleteFileW
CreateFileW
GetCurrentDirectoryW
HeapDestroy
HeapCreate
ExitProcess
ReleaseSRWLockExclusive
VerifyVersionInfoW
VerSetConditionMask
GetVersionExW
FindNextFileA
GetEnvironmentStringsW
FreeEnvironmentStringsW
SetEnvironmentVariableA
WriteConsoleW
CreateIoCompletionPort

ole32

CoTaskMemFree
CoCreateGuid
CoCreateInstance
PropVariantClear
CoInitializeEx
CoUninitialize

shell32

SHGetKnownFolderPath
CommandLineToArgvW
SHGetFolderPathW

shlwapi

PathMatchSpecW

user32

PostQuitMessage
LoadKeyboardLayoutW
ActivateKeyboardLayout
GetKeyboardLayoutNameW
GetKeyboardLayoutList
ToUnicode
VkKeyScanW
MapVirtualKeyW
TranslateMessage
DispatchMessageW
SystemParametersInfoW
SetWindowLongPtrW
GetWindowLongPtrW
DestroyWindow
CreateWindowExW
RegisterClassExW
UnregisterClassW
DefWindowProcW
KillTimer
SetTimer
MsgWaitForMultipleObjectsEx
GetQueueStatus
PostMessageW
PeekMessageW

usp10

ScriptShape
ScriptItemize
ScriptFreeCache

winmm

timeBeginPeriod
timeEndPeriod
timeGetTime

ws2_32

ioctlsocket
getaddrinfo
WSAStartup
freeaddrinfo
getpeername
getsockopt
WSASocketW
recvfrom
sendto
WSARecvFrom
WSASendTo
accept
bind
closesocket
connect
getsockname
listen
recv
setsockopt
shutdown
WSAGetLastError
WSACloseEvent
WSACreateEvent
WSAEnumNetworkEvents
WSAEventSelect
WSAGetOverlappedResult
WSAIoctl
WSASend
socket
WSAResetEvent

userenv

DestroyEnvironmentBlock
CreateEnvironmentBlock

crypt32

CertGetIssuerCertificateFromStore
CertDuplicateCertificateContext
CertFreeCertificateContext
CertSetCertificateContextProperty
CertCompareCertificateName
CryptVerifyCertificateSignatureEx
CertFindExtension
CertFreeCertificateChainEngine
CertGetCertificateChain
CertFreeCertificateChain
CertVerifyCertificateChainPolicy
CertGetCertificateContextProperty
CertOpenStore
CertCloseStore
CertAddEncodedCertificateToStore
CertCreateCertificateChainEngine
CryptInstallOIDFunctionAddress
CryptDecodeObjectEx

secur32

InitializeSecurityContextW
DeleteSecurityContext
FreeContextBuffer
QuerySecurityPackageInfoW
FreeCredentialsHandle
AcquireCredentialsHandleW

urlmon

CoInternetCreateSecurityManager

winhttp

WinHttpCloseHandle
WinHttpGetProxyForUrl
WinHttpGetIEProxyConfigForCurrentUser
WinHttpOpen
WinHttpSetTimeouts

Exports

Exports

GetHandleVerifier

Sections

.text
Size: 6.9MB - Virtual size: 6.9MB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

_text32
Size: 134KB - Virtual size: 133KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 2.7MB - Virtual size: 2.7MB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 51KB - Virtual size: 98KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.pdata
Size: 353KB - Virtual size: 352KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.tls
Size: 512B - Virtual size: 9B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

_RDATA
Size: 32KB - Virtual size: 32KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.rsrc
Size: 51KB - Virtual size: 50KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 58KB - Virtual size: 57KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

f0c170bc7b530fc5a8c5f40c5c2b0e83

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

advapi32

dbghelp

gdi32

kernel32

ole32

shell32

shlwapi

user32

usp10

winmm

ws2_32

userenv

crypt32

secur32

urlmon

winhttp

Exports

Exports

Sections

.text Size: 6.9MB - Virtual size: 6.9MB

_text32 Size: 134KB - Virtual size: 133KB

.rdata Size: 2.7MB - Virtual size: 2.7MB

.data Size: 51KB - Virtual size: 98KB

.pdata Size: 353KB - Virtual size: 352KB

.tls Size: 512B - Virtual size: 9B

_RDATA Size: 32KB - Virtual size: 32KB

.rsrc Size: 51KB - Virtual size: 50KB

.reloc Size: 58KB - Virtual size: 57KB

.text
Size: 6.9MB - Virtual size: 6.9MB

_text32
Size: 134KB - Virtual size: 133KB

.rdata
Size: 2.7MB - Virtual size: 2.7MB

.data
Size: 51KB - Virtual size: 98KB

.pdata
Size: 353KB - Virtual size: 352KB

.tls
Size: 512B - Virtual size: 9B

_RDATA
Size: 32KB - Virtual size: 32KB

.rsrc
Size: 51KB - Virtual size: 50KB

.reloc
Size: 58KB - Virtual size: 57KB