2024-02-18_4ba6b0d4fc46d595e1b59a965a0044a4_gazer_ryuk

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General

Target
2024-02-18_4ba6b0d4fc46d595e1b59a965a0044a4_gazer_ryuk
Size 6.1MB
Sample240218-p172kaaf87
SHA256 6976ffaa2deac082dedcd30e2ecb2faa86e5361d1c22d6678baf44985ef217ce
MD5 4ba6b0d4fc46d595e1b59a965a0044a4
SHA1 55e5e00cac5a78d51d370b347d1982288151d553
SHA512 768d350c06bac0a07b11d076bbc8164d8bd0fe48263fa7848ec13c856d6d46513754ba3f2bd87ce5717904b70a0e2efe5d7f66ef604c83286b3c6f9853f48c6f
SSDEEP 98304:ilLAB1vqhIQD/u9LkqFle1Gui16ZEXiZTslVw53gcbj:is0IQq9LjFlk53gc
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

Malware Config

Signatures

Detects command variations typically used by ransomware 1 IoCs

resource	yara_rule
sample	INDICATOR_SUSPICIOUS_GENRansomware

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
2024-02-18_4ba6b0d4fc46d595e1b59a965a0044a4_gazer_ryuk

File Explorer

2024-02-18_4ba6b0d4fc46d595e1b59a965a0044a4_gazer_ryuk

.exe 6.1MB

2024-02-18_4ba6b0d4fc46d595e1b59a965a0044a4_gazer_ryuk

IMPHASH c57aa4ee63a76fdf9df0f5a02f846ba4
SHA256 6976ffaa2deac082dedcd30e2ecb2faa86e5361d1c22d6678baf44985ef217ce
MD5 4ba6b0d4fc46d595e1b59a965a0044a4
SHA1 55e5e00cac5a78d51d370b347d1982288151d553
SHA512 768d350c06bac0a07b11d076bbc8164d8bd0fe48263fa7848ec13c856d6d46513754ba3f2bd87ce5717904b70a0e2efe5d7f66ef604c83286b3c6f9853f48c6f
SSDEEP 98304:ilLAB1vqhIQD/u9LkqFle1Gui16ZEXiZTslVw53gcbj:is0IQq9LjFlk53gc
MD5 SHA1 SHA512 SSDEEP

windows:5 windows x64 arch:x64

Detects command variations typically used by ransomware
Unsigned PE

Checks for missing Authenticode signature.

Minor OS version

Major OS version

Entry point

4448372

Magic Number

523

Subsystem

IMAGE_SUBSYSTEM_WINDOWS_GUI

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

kernel32

AcquireSRWLockExclusive CloseHandle CopyFileW CreateEventA CreateEventW CreateFileA CreateFileW CreateIoCompletionPort CreateThread CreateToolhelp32Snapshot DecodePointer DeleteCriticalSection DeviceIoControl DuplicateHandle EncodePointer EnterCriticalSection EnumSystemLocalesW ExitProcess FindClose FindFirstFileExW FindFirstVolumeW FindNextFileW FindNextVolumeW FindVolumeClose FlsAlloc FlsFree FlsGetValue FlsSetValue FlushFileBuffers FreeEnvironmentStringsW FreeLibrary GetACP GetCPInfo GetCommandLineA GetCommandLineW GetComputerNameA GetConsoleMode GetConsoleOutputCP GetCurrentProcess GetCurrentProcessId GetCurrentThread GetCurrentThreadId GetDiskFreeSpaceExA GetDiskFreeSpaceExW GetDriveTypeW GetEnvironmentStringsW GetFileAttributesW GetFileSizeEx GetFileTime GetFileType GetFinalPathNameByHandleW GetLastError GetLocaleInfoA GetLocaleInfoW GetLogicalDrives GetModuleFileNameW GetModuleHandleA GetModuleHandleExW GetModuleHandleW GetNativeSystemInfo GetOEMCP GetProcAddress GetProcessHeap GetQueuedCompletionStatus GetStartupInfoW GetStdHandle GetStringTypeW GetSystemInfo GetSystemTimeAsFileTime GetTickCount GetTickCount64 GetUserDefaultLCID GetUserDefaultLangID GetVolumeInformationW GetVolumePathNamesForVolumeNameW GetWindowsDirectoryA GetWindowsDirectoryW GlobalMemoryStatusEx HeapAlloc HeapFree HeapReAlloc HeapSize InitializeConditionVariable InitializeCriticalSection InitializeCriticalSectionAndSpinCount InitializeCriticalSectionEx InitializeSListHead IsDebuggerPresent IsProcessorFeaturePresent IsValidCodePage IsValidLocale K32GetModuleFileNameExW LCMapStringEx LCMapStringW LeaveCriticalSection LoadLibraryA LoadLibraryExW LocalFree MoveFileW MultiByteToWideChar OpenProcess OutputDebugStringW PostQueuedCompletionStatus Process32NextW QueryDosDeviceW QueryPerformanceCounter RaiseException ReadConsoleW ReadFile ReleaseSRWLockExclusive RtlCaptureContext RtlLookupFunctionEntry RtlPcToFileHeader RtlUnwindEx RtlVirtualUnwind SetEndOfFile SetErrorMode SetEvent SetFileAttributesW SetFilePointerEx SetLastError SetStdHandle SetUnhandledExceptionFilter SetVolumeMountPointW Sleep SleepConditionVariableCS SleepConditionVariableSRW SleepEx TerminateProcess TerminateThread TlsAlloc TlsFree TlsGetValue TlsSetValue UnhandledExceptionFilter WaitForMultipleObjects WaitForSingleObject WakeAllConditionVariable WakeConditionVariable WideCharToMultiByte WriteConsoleW WriteFile lstrcatW lstrcmpW lstrcmpiW lstrcpyW lstrlenA lstrlenW

user32

CreateWindowExW DefWindowProcW GetCursorPos MessageBoxW RegisterClassW

advapi32

AdjustTokenPrivileges AllocateAndInitializeSid ChangeServiceConfigW CloseServiceHandle ControlService CreateServiceW CryptAcquireContextW CryptGenRandom CryptReleaseContext EnumDependentServicesW EnumServicesStatusW FreeSid GetTokenInformation LookupPrivilegeValueW LsaClose LsaFreeMemory LsaOpenPolicy LsaQueryInformationPolicy OpenProcessToken OpenSCManagerW OpenServiceW OpenThreadToken QueryServiceConfigW QueryServiceStatusEx RegCloseKey RegOpenKeyExA RegOpenKeyExW RegQueryValueExA RegSetValueExW SetEntriesInAclW SetNamedSecurityInfoW StartServiceW

shell32

CommandLineToArgvW ShellExecuteA ShellExecuteW

netapi32

NetApiBufferFree NetShareEnum

shlwapi

PathFileExistsW SHDeleteKeyW StrCmpNIW StrCmpNW StrStrIW UrlEscapeA UrlUnescapeA wnsprintfA wnsprintfW

iphlpapi

GetIpNetTable

ws2_32

inet_ntoa

wininet

HttpOpenRequestW HttpSendRequestW InternetCloseHandle InternetConnectW InternetCrackUrlW InternetOpenW InternetQueryDataAvailable InternetQueryOptionW InternetReadFile InternetSetOptionW

Name

.text

Size

4.4MB

Virtual Size

4.4MB

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ

Name

.rdata

Size

131KB

Virtual Size

131KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.data

Size

1.2MB

Virtual Size

1.3MB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.pdata

Size

28KB

Virtual Size

28KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.00cfg

Size

512B

Virtual Size

56B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.gxfg

Size

9KB

Virtual Size

8KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.retplne

Size

512B

Virtual Size

156B

Characteristics

Name

.tls

Size

512B

Virtual Size

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

_RDATA

Size

512B

Virtual Size

500B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.reloc

Size

312KB

Virtual Size

312KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_DISCARDABLE IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

File Explorer

2024-02-18_4ba6b0d4fc46d595e1b59a965a0044a4_gazer_ryuk

kernel32

user32

advapi32

shell32

netapi32

shlwapi

iphlpapi

ws2_32

wininet

generic