Static task
static1
Behavioral task
behavioral1
Sample
SylvoraPerm.exe
Resource
win10-20240404-en
Behavioral task
behavioral2
Sample
SylvoraPerm.exe
Resource
win10v2004-20240412-en
General
-
Target
SylvoraPerm.exe
-
Size
855KB
-
MD5
522b53995d9f7fd4d2b2b618775eabcd
-
SHA1
e514fc4c119d8b130264a828179b10abb391ecbc
-
SHA256
18406e8b5ef43ffacfbb2ac26d6eb602411c66baa423e6c37245faa509192360
-
SHA512
6a29ae9c01dce5733a2a8f9e90cf13b340e8b2c75d44c80a15bee93af28f03c14f7fa33a100dc0be0dcb8eefffce071cb82d1de2447eb2d858b9b23829f6f691
-
SSDEEP
12288:WL1g7wsAKJMBAFNVkF77RlzoCgfdcqvCoRtb7:u1g7wsAKaBApkF77RpoCgfdt6on7
Malware Config
Signatures
-
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource SylvoraPerm.exe
Files
-
SylvoraPerm.exe.exe windows:6 windows x64 arch:x64
7abaeff7588ab93b65b61cbf46004d90
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
Imports
kernel32
CreateThread
GetConsoleWindow
IsDebuggerPresent
Sleep
SetConsoleTitleA
GetProcessHeap
HeapAlloc
GetModuleHandleW
RtlCaptureContext
RtlLookupFunctionEntry
RtlVirtualUnwind
UnhandledExceptionFilter
SetUnhandledExceptionFilter
GetCurrentProcess
TerminateProcess
IsProcessorFeaturePresent
QueryPerformanceCounter
GetCurrentProcessId
GetCurrentThreadId
GetSystemTimeAsFileTime
InitializeSListHead
HeapFree
user32
SetLayeredWindowAttributes
MoveWindow
MessageBoxA
GetAsyncKeyState
ShowWindow
advapi32
RegEnumKeyExA
RegSetValueExA
RegCloseKey
RegQueryValueExA
RegOpenKeyExA
msvcp140
??6?$basic_ostream@DU?$char_traits@D@std@@@std@@QEAAAEAV01@P6AAEAV01@AEAV01@@Z@Z
??6?$basic_ostream@DU?$char_traits@D@std@@@std@@QEAAAEAV01@P6AAEAVios_base@1@AEAV21@@Z@Z
??6?$basic_ostream@DU?$char_traits@D@std@@@std@@QEAAAEAV01@H@Z
??1?$basic_iostream@DU?$char_traits@D@std@@@std@@UEAA@XZ
?good@ios_base@std@@QEBA_NXZ
??1_Lockit@std@@QEAA@XZ
??0_Lockit@std@@QEAA@H@Z
?_Getgloballocale@locale@std@@CAPEAV_Locimp@12@XZ
?cin@std@@3V?$basic_istream@DU?$char_traits@D@std@@@1@A
?id@?$codecvt@DDU_Mbstatet@@@std@@2V0locale@2@A
?_Fiopen@std@@YAPEAU_iobuf@@PEBDHH@Z
?id@?$ctype@D@std@@2V0locale@2@A
?imbue@?$basic_streambuf@DU?$char_traits@D@std@@@std@@MEAAXAEBVlocale@2@@Z
?_Ipfx@?$basic_istream@DU?$char_traits@D@std@@@std@@QEAA_N_N@Z
?_Getcat@?$codecvt@DDU_Mbstatet@@@std@@SA_KPEAPEBVfacet@locale@2@PEBV42@@Z
?snextc@?$basic_streambuf@DU?$char_traits@D@std@@@std@@QEAAHXZ
?sgetc@?$basic_streambuf@DU?$char_traits@D@std@@@std@@QEAAHXZ
?unshift@?$codecvt@DDU_Mbstatet@@@std@@QEBAHAEAU_Mbstatet@@PEAD1AEAPEAD@Z
?getloc@?$basic_streambuf@DU?$char_traits@D@std@@@std@@QEBA?AVlocale@2@XZ
?_Init@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IEAAXXZ
?in@?$codecvt@DDU_Mbstatet@@@std@@QEBAHAEAU_Mbstatet@@PEBD1AEAPEBDPEAD3AEAPEAD@Z
?out@?$codecvt@DDU_Mbstatet@@@std@@QEBAHAEAU_Mbstatet@@PEBD1AEAPEBDPEAD3AEAPEAD@Z
??0?$basic_ostream@DU?$char_traits@D@std@@@std@@QEAA@PEAV?$basic_streambuf@DU?$char_traits@D@std@@@1@_N@Z
??1?$basic_ostream@DU?$char_traits@D@std@@@std@@UEAA@XZ
?write@?$basic_ostream@DU?$char_traits@D@std@@@std@@QEAAAEAV12@PEBD_J@Z
?getloc@ios_base@std@@QEBA?AVlocale@2@XZ
??7ios_base@std@@QEBA_NXZ
?_Getcat@?$ctype@D@std@@SA_KPEAPEBVfacet@locale@2@PEBV42@@Z
?always_noconv@codecvt_base@std@@QEBA_NXZ
??Bid@locale@std@@QEAA_KXZ
??1?$basic_ios@DU?$char_traits@D@std@@@std@@UEAA@XZ
?sync@?$basic_streambuf@DU?$char_traits@D@std@@@std@@MEAAHXZ
?setbuf@?$basic_streambuf@DU?$char_traits@D@std@@@std@@MEAAPEAV12@PEAD_J@Z
?cout@std@@3V?$basic_ostream@DU?$char_traits@D@std@@@1@A
?uncaught_exception@std@@YA_NXZ
?_Xbad_alloc@std@@YAXXZ
?_Xout_of_range@std@@YAXPEBD@Z
?setw@std@@YA?AU?$_Smanip@_J@1@_J@Z
?_Xlength_error@std@@YAXPEBD@Z
?sputn@?$basic_streambuf@DU?$char_traits@D@std@@@std@@QEAA_JPEBD_J@Z
?put@?$basic_ostream@DU?$char_traits@D@std@@@std@@QEAAAEAV12@D@Z
?widen@?$basic_ios@DU?$char_traits@D@std@@@std@@QEBADD@Z
?sputc@?$basic_streambuf@DU?$char_traits@D@std@@@std@@QEAAHD@Z
?xsputn@?$basic_streambuf@DU?$char_traits@D@std@@@std@@MEAA_JPEBD_J@Z
?xsgetn@?$basic_streambuf@DU?$char_traits@D@std@@@std@@MEAA_JPEAD_J@Z
?uflow@?$basic_streambuf@DU?$char_traits@D@std@@@std@@MEAAHXZ
?showmanyc@?$basic_streambuf@DU?$char_traits@D@std@@@std@@MEAA_JXZ
?_Unlock@?$basic_streambuf@DU?$char_traits@D@std@@@std@@UEAAXXZ
?_Lock@?$basic_streambuf@DU?$char_traits@D@std@@@std@@UEAAXXZ
??1?$basic_streambuf@DU?$char_traits@D@std@@@std@@UEAA@XZ
??0?$basic_iostream@DU?$char_traits@D@std@@@std@@QEAA@PEAV?$basic_streambuf@DU?$char_traits@D@std@@@1@@Z
??0?$basic_ios@DU?$char_traits@D@std@@@std@@IEAA@XZ
?setstate@?$basic_ios@DU?$char_traits@D@std@@@std@@QEAAXH_N@Z
?flush@?$basic_ostream@DU?$char_traits@D@std@@@std@@QEAAAEAV12@XZ
?_Osfx@?$basic_ostream@DU?$char_traits@D@std@@@std@@QEAAXXZ
??0?$basic_streambuf@DU?$char_traits@D@std@@@std@@IEAA@XZ
iphlpapi
GetAdaptersInfo
vcruntime140_1
__CxxFrameHandler4
vcruntime140
_CxxThrowException
__std_exception_copy
__std_exception_destroy
__C_specific_handler
__current_exception
__current_exception_context
memset
memcpy
__std_terminate
memcmp
memmove
api-ms-win-crt-heap-l1-1-0
malloc
_set_new_mode
_callnewh
free
api-ms-win-crt-multibyte-l1-1-0
_mbscmp
api-ms-win-crt-utility-l1-1-0
srand
rand
api-ms-win-crt-string-l1-1-0
toupper
api-ms-win-crt-stdio-l1-1-0
fgetpos
fgetc
setvbuf
fwrite
ungetc
fclose
_set_fmode
fflush
fsetpos
fputc
fread
_fseeki64
_get_stream_buffer_pointers
__p__commode
api-ms-win-crt-runtime-l1-1-0
_crt_atexit
_register_onexit_function
_initialize_onexit_table
_initialize_narrow_environment
_configure_narrow_argv
_get_initial_narrow_environment
_cexit
_initterm_e
terminate
_set_app_type
system
_invalid_parameter_noinfo_noreturn
exit
_exit
__p___argc
__p___argv
_c_exit
_initterm
_register_thread_local_exe_atexit_callback
_seh_filter_exe
api-ms-win-crt-time-l1-1-0
_time64
api-ms-win-crt-math-l1-1-0
__setusermatherr
ceilf
api-ms-win-crt-filesystem-l1-1-0
remove
_lock_file
_unlock_file
api-ms-win-crt-locale-l1-1-0
_configthreadlocale
Sections
.text Size: 116KB - Virtual size: 115KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 24KB - Virtual size: 23KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 710KB - Virtual size: 712KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.pdata Size: 3KB - Virtual size: 2KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.rsrc Size: 512B - Virtual size: 488B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 512B - Virtual size: 228B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ