2024-04-09_a3f20d3f6a3f6d75c6c231e1d0de5b61_ryuk

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General

Target

2024-04-09_a3f20d3f6a3f6d75c6c231e1d0de5b61_ryuk
Size

1.1MB
MD5

a3f20d3f6a3f6d75c6c231e1d0de5b61
SHA1

e1c371b06ce90ed7a793291dc0d57b4a5ba89031
SHA256

e1a362dbde8cfe2db535e8c8c0fab2eea14520df7d048529fc8801dea50066a9
SHA512

83527d379fd495a540dd3377c708e6e0ce7db48f73bac5b7b2df9712a1ef9d724f025c3f943a0d46126a2ce07a04317a7c2688cf935cd593b4b5d22b25ee2308
SSDEEP

24576:t00VdrCTUuJDLsfP1zOxS2Gz8qleBu76DeR9Ybvq:NdraUuxQ3zVeiAS9Yrq

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
2024-04-09_a3f20d3f6a3f6d75c6c231e1d0de5b61_ryuk

Files

2024-04-09_a3f20d3f6a3f6d75c6c231e1d0de5b61_ryuk
.exe windows:5 windows x64 arch:x64

89b90e67d56744f5c78ed2d654767412

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:\BuildAgent\work\6a6d135591f2f49f\src\out\Default\browser-setup.arc.pdb

Imports

advapi32

ConvertSidToStringSidW
ConvertStringSecurityDescriptorToSecurityDescriptorW
GetTokenInformation
OpenProcessToken
SystemFunction036

winmm

timeGetTime

kernel32

AcquireSRWLockExclusive
CloseHandle
CompareStringW
CreateDirectoryW
CreateEventW
CreateFileW
CreateMutexW
CreateProcessW
CreateThread
DeleteCriticalSection
DeleteFileW
DosDateTimeToFileTime
DuplicateHandle
EncodePointer
EnterCriticalSection
EnumResourceNamesW
EnumSystemLocalesW
ExitProcess
ExitThread
ExpandEnvironmentStringsW
FindClose
FindFirstFileExW
FindFirstFileW
FindNextFileW
FindResourceW
FlsAlloc
FlsFree
FlsGetValue
FlsSetValue
FlushFileBuffers
FreeEnvironmentStringsW
FreeLibrary
FreeLibraryAndExitThread
GetACP
GetCPInfo
GetCommandLineA
GetCommandLineW
GetConsoleMode
GetConsoleOutputCP
GetCurrentProcess
GetCurrentProcessId
GetCurrentThreadId
GetDateFormatW
GetEnvironmentStringsW
GetExitCodeProcess
GetFileSizeEx
GetFileType
GetLastError
GetLocaleInfoW
GetModuleFileNameW
GetModuleHandleA
GetModuleHandleExW
GetModuleHandleW
GetOEMCP
GetProcAddress
GetProcessHeap
GetStartupInfoW
GetStdHandle
GetStringTypeW
GetSystemInfo
GetSystemTimeAsFileTime
GetTempPathW
GetTickCount
GetTimeFormatW
GetTimeZoneInformation
GetUserDefaultLCID
GetVolumeInformationW
GetVolumePathNameW
HeapAlloc
HeapFree
InitializeCriticalSectionAndSpinCount
InitializeSListHead
IsDebuggerPresent
IsProcessorFeaturePresent
IsValidCodePage
IsValidLocale
LCMapStringW
LeaveCriticalSection
LoadLibraryExA
LoadLibraryExW
LoadLibraryW
LoadResource
LocalAlloc
LocalFileTimeToFileTime
LocalFree
LockResource
MultiByteToWideChar
QueryPerformanceCounter
QueryPerformanceFrequency
RaiseException
ReadConsoleW
ReadFile
ReleaseMutex
ReleaseSRWLockExclusive
RemoveDirectoryW
ResetEvent
RtlCaptureContext
RtlLookupFunctionEntry
RtlPcToFileHeader
RtlUnwind
RtlUnwindEx
RtlVirtualUnwind
SetEnvironmentVariableW
SetEvent
SetFileInformationByHandle
SetFilePointer
SetFilePointerEx
SetLastError
SetStdHandle
SetUnhandledExceptionFilter
SizeofResource
Sleep
SleepConditionVariableSRW
TerminateProcess
TlsAlloc
TlsFree
TlsGetValue
TlsSetValue
TryAcquireSRWLockExclusive
UnhandledExceptionFilter
VerSetConditionMask
VerifyVersionInfoW
VirtualAlloc
VirtualFree
VirtualProtect
VirtualQuery
WaitForSingleObject
WaitForSingleObjectEx
WakeAllConditionVariable
WakeConditionVariable
WideCharToMultiByte
WriteConsoleW
WriteFile
lstrcpynW
lstrlenA
lstrlenW

Sections

.text
Size: 404KB - Virtual size: 404KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 109KB - Virtual size: 108KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 56KB - Virtual size: 89KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.pdata
Size: 18KB - Virtual size: 17KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.00cfg
Size: 512B - Virtual size: 56B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.gxfg
Size: 9KB - Virtual size: 9KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.retplne
Size: 512B - Virtual size: 140B

.tls
Size: 512B - Virtual size: 297B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

_RDATA
Size: 512B - Virtual size: 172B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.rsrc
Size: 161.5MB - Virtual size: 161.5MB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

89b90e67d56744f5c78ed2d654767412

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

advapi32

winmm

kernel32

Sections

.text Size: 404KB - Virtual size: 404KB

.rdata Size: 109KB - Virtual size: 108KB

.data Size: 56KB - Virtual size: 89KB

.pdata Size: 18KB - Virtual size: 17KB

.00cfg Size: 512B - Virtual size: 56B

.gxfg Size: 9KB - Virtual size: 9KB

.retplne Size: 512B - Virtual size: 140B

.tls Size: 512B - Virtual size: 297B

_RDATA Size: 512B - Virtual size: 172B

.rsrc Size: 161.5MB - Virtual size: 161.5MB

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

.text
Size: 404KB - Virtual size: 404KB

.rdata
Size: 109KB - Virtual size: 108KB

.data
Size: 56KB - Virtual size: 89KB

.pdata
Size: 18KB - Virtual size: 17KB

.00cfg
Size: 512B - Virtual size: 56B

.gxfg
Size: 9KB - Virtual size: 9KB

.retplne
Size: 512B - Virtual size: 140B

.tls
Size: 512B - Virtual size: 297B

_RDATA
Size: 512B - Virtual size: 172B

.rsrc
Size: 161.5MB - Virtual size: 161.5MB

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