Behavioral task
behavioral1
Sample
2023-12-10_5f3ecd02a94cec2b62bfecd79f5a1d98_rhysida.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2023-12-10_5f3ecd02a94cec2b62bfecd79f5a1d98_rhysida.exe
Resource
win10-20240404-en
Behavioral task
behavioral3
Sample
2023-12-10_5f3ecd02a94cec2b62bfecd79f5a1d98_rhysida.exe
Resource
win10v2004-20240226-en
Behavioral task
behavioral4
Sample
2023-12-10_5f3ecd02a94cec2b62bfecd79f5a1d98_rhysida.exe
Resource
win11-20240221-en
General
-
Target
2023-12-10_5f3ecd02a94cec2b62bfecd79f5a1d98_rhysida
-
Size
497KB
-
MD5
5f3ecd02a94cec2b62bfecd79f5a1d98
-
SHA1
2cd65d6d0cb10b8d061ee33133f0f98f86917265
-
SHA256
b55ecbddcbed916481ad537807cd3e33cb71814be6ce8e03eb63b629ccb8c692
-
SHA512
254949d3932a915394dec0eca359291baa8963e0cab55d28af02c678ce9841a3dad9b2d28e911f51655d8a52cf7d7379b446c0a2917b6e083abf95a1aa68dfee
-
SSDEEP
6144:rFoCbN9uRhQW8HnuYqWrJhN7L6aMFNYkS+D5gtuMf9opagj7T:IqnTp7N78Y5e5gUG9o/
Malware Config
Signatures
-
Detect Rhysida ransomware 1 IoCs
resource yara_rule sample family_rhysida -
Rhysida family
-
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource 2023-12-10_5f3ecd02a94cec2b62bfecd79f5a1d98_rhysida
Files
-
2023-12-10_5f3ecd02a94cec2b62bfecd79f5a1d98_rhysida.exe windows:4 windows x64 arch:x64
515a3064a47ad1391d1e2cc2ed69a98b
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
File Characteristics
IMAGE_FILE_RELOCS_STRIPPED
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LINE_NUMS_STRIPPED
IMAGE_FILE_LOCAL_SYMS_STRIPPED
IMAGE_FILE_LARGE_ADDRESS_AWARE
IMAGE_FILE_DEBUG_STRIPPED
Imports
advapi32
CryptAcquireContextA
CryptGenRandom
kernel32
AddVectoredExceptionHandler
CloseHandle
CreateEventA
CreateSemaphoreA
DeleteCriticalSection
DuplicateHandle
EnterCriticalSection
GetCurrentProcess
GetCurrentProcessId
GetCurrentThread
GetCurrentThreadId
GetFileAttributesA
GetHandleInformation
GetLastError
GetModuleFileNameW
GetProcessAffinityMask
GetStartupInfoA
GetSystemInfo
GetSystemTimeAsFileTime
GetThreadContext
GetThreadPriority
GetTickCount
InitializeCriticalSection
IsDebuggerPresent
LeaveCriticalSection
OutputDebugStringA
QueryPerformanceCounter
RaiseException
ReleaseSemaphore
RemoveVectoredExceptionHandler
ResetEvent
ResumeThread
RtlAddFunctionTable
RtlCaptureContext
RtlLookupFunctionEntry
RtlVirtualUnwind
SetEvent
SetLastError
SetProcessAffinityMask
SetThreadContext
SetThreadPriority
SetUnhandledExceptionFilter
Sleep
SuspendThread
TerminateProcess
TlsAlloc
TlsGetValue
TlsSetValue
TryEnterCriticalSection
UnhandledExceptionFilter
VirtualProtect
VirtualQuery
WaitForMultipleObjects
WaitForSingleObject
msvcrt
__C_specific_handler
__dllonexit
__doserrno
__getmainargs
__initenv
__iob_func
__lconv_init
__pioinfo
__set_app_type
__setusermatherr
_acmdln
_amsg_exit
_beginthreadex
_cexit
_endthreadex
_errno
_exit
_filelengthi64
_fileno
_findclose
_findfirst64
_fmode
_fullpath
_initterm
_lock
_lseeki64
_onexit
_setjmp
_stat64
_ultoa
_unlock
_write
abort
acos
calloc
exit
fclose
fflush
fgetpos
fopen
fprintf
fread
free
frexp
fseek
fsetpos
ftell
fwprintf
fwrite
malloc
memcmp
memcpy
memmove
memset
printf
raise
rand
realloc
rename
signal
sprintf
srand
strcat
strcmp
strcpy
strlen
strncmp
strncpy
system
vfprintf
wcscpy
_time64
_snwprintf
_findnext64
longjmp
_strdup
_getcwd
_chdir
user32
MessageBoxW
Sections
.text Size: 296KB - Virtual size: 296KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.data Size: 116KB - Virtual size: 116KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rdata Size: 59KB - Virtual size: 59KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.pdata Size: 9KB - Virtual size: 8KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.xdata Size: 9KB - Virtual size: 8KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.bss Size: - Virtual size: 33KB
IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.idata Size: 5KB - Virtual size: 4KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.CRT Size: 512B - Virtual size: 112B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.tls Size: 512B - Virtual size: 104B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE