2024-02-04_b81fd56c7390cf5fd92b09124f77bc37_ryuk

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General

Target

2024-02-04_b81fd56c7390cf5fd92b09124f77bc37_ryuk
Size

390KB
MD5

b81fd56c7390cf5fd92b09124f77bc37
SHA1

732e7fc7770edc7697fb9081fbc4dfef62505f18
SHA256

e99b3a4842566b4b034e773ec1c3da40d9de48424b304afc6b6918f880316329
SHA512

402f72083c2619b307308b1984752d9e70dedaad5c4d8eeed144d64a9f31bb3c0dcc0bb1fddccf328958eb47970c57917080f3437fa6ffe83e7563eb1b788267
SSDEEP

12288:+HM+uoGPr6vehzUdCAuSKUoMPT7+U1mi:5+3GTbznRSKU9T7+Mx

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
2024-02-04_b81fd56c7390cf5fd92b09124f77bc37_ryuk

Files

2024-02-04_b81fd56c7390cf5fd92b09124f77bc37_ryuk
.exe windows:6 windows x64 arch:x64

c5f27acb385a4e7990c2d1ff1b06b9a8

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

UpdateTask64.pdb

Imports

kernel32

CreateFileW
DeleteFileW
UnmapViewOfFile
CreateFileMappingW
MapViewOfFile
WriteFile
CreateEventW
SetEvent
ResetEvent
MultiByteToWideChar
WriteConsoleW
FlushFileBuffers
SetLastError
GetModuleFileNameW
GetProcessHeap
DeleteCriticalSection
DecodePointer
HeapAlloc
RaiseException
InitializeCriticalSectionEx
HeapFree
GetTempFileNameW
BeginUpdateResourceW
CreateProcessW
UpdateResourceW
FindResourceW
LoadResource
CloseHandle
LockResource
EndUpdateResourceW
DuplicateHandle
GetTempPathW
GetCurrentProcess
SizeofResource
LocalFree
WaitForSingleObject
GetLastError
HeapSize
SetStdHandle
SetEnvironmentVariableW
FreeEnvironmentStringsW
GetEnvironmentStringsW
GetOEMCP
IsValidCodePage
FindNextFileW
FindFirstFileExW
FindClose
SetFilePointerEx
GetConsoleMode
GetConsoleCP
EnumSystemLocalesW
GetUserDefaultLCID
IsValidLocale
EnterCriticalSection
LeaveCriticalSection
WaitForSingleObjectEx
GetModuleHandleW
GetProcAddress
RtlCaptureContext
RtlLookupFunctionEntry
RtlVirtualUnwind
UnhandledExceptionFilter
SetUnhandledExceptionFilter
TerminateProcess
IsProcessorFeaturePresent
IsDebuggerPresent
GetStartupInfoW
QueryPerformanceCounter
GetCurrentProcessId
GetCurrentThreadId
GetSystemTimeAsFileTime
InitializeSListHead
WideCharToMultiByte
GetStringTypeW
EncodePointer
GetCPInfo
CompareStringW
LCMapStringW
GetLocaleInfoW
InitializeCriticalSectionAndSpinCount
TlsAlloc
TlsGetValue
TlsSetValue
TlsFree
OutputDebugStringW
RtlPcToFileHeader
FreeLibrary
LoadLibraryExW
RtlUnwindEx
ExitProcess
GetModuleHandleExW
GetStdHandle
GetCommandLineA
GetCommandLineW
GetACP
HeapReAlloc
GetFileType

advapi32

FreeSid
CheckTokenMembership
RegCloseKey
RegOpenKeyExW
RegQueryValueExW
StartServiceW
ChangeServiceConfigW
QueryServiceStatusEx
CreateServiceW
CloseServiceHandle
OpenSCManagerW
ChangeServiceConfig2W
SetEntriesInAclW
SetNamedSecurityInfoW
DeleteService
GetNamedSecurityInfoW
ConvertStringSidToSidW
ControlService
OpenServiceW
AllocateAndInitializeSid

shell32

SHGetKnownFolderPath

ole32

CoTaskMemFree

version

GetFileVersionInfoSizeW
VerQueryValueW
GetFileVersionInfoW

winhttp

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

Sections

.text
Size: 246KB - Virtual size: 245KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 116KB - Virtual size: 115KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 6KB - Virtual size: 12KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

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

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

.gfids
Size: 1024B - Virtual size: 588B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 4KB - Virtual size: 3KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

c5f27acb385a4e7990c2d1ff1b06b9a8

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

kernel32

advapi32

shell32

ole32

version

winhttp

Sections

.text Size: 246KB - Virtual size: 245KB

.rdata Size: 116KB - Virtual size: 115KB

.data Size: 6KB - Virtual size: 12KB

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

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

.gfids Size: 1024B - Virtual size: 588B

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

.reloc Size: 4KB - Virtual size: 3KB

.text
Size: 246KB - Virtual size: 245KB

.rdata
Size: 116KB - Virtual size: 115KB

.data
Size: 6KB - Virtual size: 12KB

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

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

.gfids
Size: 1024B - Virtual size: 588B

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

.reloc
Size: 4KB - Virtual size: 3KB