strela | 2025-01-16_59082d0c7b3ea34923139981d4f22df9_cobalt-strike_ryuk

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General

Target
2025-01-16_59082d0c7b3ea34923139981d4f22df9_cobalt-strike_ryuk
Size 398KB
Sample250116-f95s5awkck
SHA256 5ecb021c3df38ad4c5927acf57c4d8064e4144c3cb1cac1740b97adac8c7c24b
MD5 59082d0c7b3ea34923139981d4f22df9
SHA1 6c318bbc0a3d4484a8f65648e0f33e3aa55822a5
SHA512 11d714e03ab78783c3eadc767cb0384fefa4f810940731d51dbc65ae390083807af0a3528b01babc810cb647cba38eb1535072b0489778cce9e52e01fcd34c88
SSDEEP 12288:EBmOeWHehSjfhiPsxOticWgeEqq1sdeYo5H:EBmQISbA0wicWR
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

strela

Malware Config

Signatures

Detects Strela Stealer payload 1 IoCs

resource	yara_rule
sample	family_strela

Strela family
strela

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
2025-01-16_59082d0c7b3ea34923139981d4f22df9_cobalt-strike_ryuk

File Explorer

2025-01-16_59082d0c7b3ea34923139981d4f22df9_cobalt-strike_ryuk

.exe 398KB

2025-01-16_59082d0c7b3ea34923139981d4f22df9_cobalt-strike_ryuk

IMPHASH 5ca1e85281bdc4fd891b0e196273b9a3
SHA256 5ecb021c3df38ad4c5927acf57c4d8064e4144c3cb1cac1740b97adac8c7c24b
MD5 59082d0c7b3ea34923139981d4f22df9
SHA1 6c318bbc0a3d4484a8f65648e0f33e3aa55822a5
SHA512 11d714e03ab78783c3eadc767cb0384fefa4f810940731d51dbc65ae390083807af0a3528b01babc810cb647cba38eb1535072b0489778cce9e52e01fcd34c88
SSDEEP 12288:EBmOeWHehSjfhiPsxOticWgeEqq1sdeYo5H:EBmQISbA0wicWR
MD5 SHA1 SHA512 SSDEEP

windows:6 windows x64 arch:x64

Detects Strela Stealer payload
Unsigned PE

Checks for missing Authenticode signature.

Minor OS version

Major OS version

Entry point

291432

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

CloseHandle CreateFileA CreateFileW DeleteCriticalSection DeleteFileA EncodePointer EnterCriticalSection ExitProcess FindClose FindFirstFileA FindFirstFileExW FindNextFileA FindNextFileW FlsAlloc FlsFree FlsGetValue FlsSetValue FlushFileBuffers FreeEnvironmentStringsW FreeLibrary GetACP GetCPInfo GetCommandLineA GetCommandLineW GetComputerNameA GetConsoleMode GetConsoleOutputCP GetConsoleWindow GetCurrentProcess GetCurrentProcessId GetCurrentThreadId GetEnvironmentStringsW GetFileSize GetFileType GetLastError GetLocaleInfoA GetModuleFileNameW GetModuleHandleExW GetModuleHandleW GetOEMCP GetProcAddress GetProcessHeap GetStartupInfoW GetStdHandle GetStringTypeW GetSystemDirectoryA GetSystemTimeAsFileTime GetTempPathA GetVolumeNameForVolumeMountPointA HeapAlloc HeapFree HeapReAlloc HeapSize InitializeCriticalSectionAndSpinCount InitializeSListHead IsDebuggerPresent IsProcessorFeaturePresent IsValidCodePage LCMapStringW LeaveCriticalSection LoadLibraryExW LocalFree MultiByteToWideChar QueryPerformanceCounter RaiseException ReadFile RtlCaptureContext RtlLookupFunctionEntry RtlPcToFileHeader RtlUnwindEx RtlVirtualUnwind SetFilePointerEx SetLastError SetStdHandle SetUnhandledExceptionFilter Sleep TerminateProcess TlsAlloc TlsFree TlsGetValue TlsSetValue UnhandledExceptionFilter WaitForSingleObject WideCharToMultiByte WriteConsoleW WriteFile lstrcatA lstrcmpA lstrcmpiA lstrcpyA lstrlenA lstrlenW

user32

GetKeyboardLayout GetKeyboardLayoutList MessageBoxA ShowWindow wsprintfA

shell32

SHGetFolderPathA SHGetKnownFolderItem ShellExecuteExA

advapi32

RegCloseKey RegEnumKeyExA RegEnumValueA RegOpenKeyExA RegQueryInfoKeyA

ole32

CoInitialize CoTaskMemFree

crypt32

CryptUnprotectData

shlwapi

PathFileExistsA StrStrA

wininet

HttpOpenRequestA HttpSendRequestA InternetCloseHandle InternetConnectA InternetOpenA InternetReadFile

Name

.text

Size

339KB

Virtual Size

338KB

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ

Name

.rdata

Size

40KB

Virtual Size

39KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.data

Size

3KB

Virtual Size

7KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.pdata

Size

4KB

Virtual Size

4KB

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

4KB

Virtual Size

4KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.retplne

Size

512B

Virtual Size

140B

Characteristics

Name

_RDATA

Size

512B

Virtual Size

500B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.rsrc

Size

512B

Virtual Size

424B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.reloc

Size

2KB

Virtual Size

1KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_DISCARDABLE IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

File Explorer

2025-01-16_59082d0c7b3ea34923139981d4f22df9_cobalt-strike_ryuk

kernel32

user32

shell32

advapi32

ole32

crypt32

shlwapi

wininet

generic