Static task
static1
Behavioral task
behavioral1
Sample
KyberBrowser.exe
Resource
win7-20230831-en
Behavioral task
behavioral2
Sample
KyberBrowser.exe
Resource
win10v2004-20230915-en
General
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Target
KyberBrowser.exe
-
Size
6.5MB
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MD5
97e4d4903f8e3bfbde1d7c0900c31399
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SHA1
d872b4d74c6d4004c04983977641fa380ae740a8
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SHA256
2ef177d74e593f9a803e8e195aa45907214be90aefe41b0a56a34881c8503fc3
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SHA512
2cbfaff799560683c7636cabb8d406b075a2fc3df9219e2d065f1ecc998422323fff24906c5d070f1b2575b7015fb82d878c28b6cade8de8b41f0c9de51aa463
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SSDEEP
98304:8bY8V9SNfD9N1d1fmW7UlBaJ/Ygkc/6HH8C78viZWl1TahLqPFeqFjQhN2dGLuk6:8bYDpbr7lTYv7giZK1iWPF7lDdGqk6
Malware Config
Signatures
-
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource KyberBrowser.exe
Files
-
KyberBrowser.exe.exe windows:6 windows x64
78da59308ee0088a874b4a6cdd7d91bd
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
Imports
kernel32
FindNextFileW
GetCurrentProcess
GetModuleHandleExW
GetModuleFileNameW
LeaveCriticalSection
InitializeCriticalSection
GetEnvironmentVariableW
FindClose
MultiByteToWideChar
GetLastError
GetFileAttributesExW
GetFullPathNameW
GetProcAddress
DeleteCriticalSection
WideCharToMultiByte
IsWow64Process
LoadLibraryExW
RtlUnwind
FreeLibrary
TlsFree
TlsSetValue
TlsGetValue
EnterCriticalSection
FindFirstFileExW
OutputDebugStringW
LoadLibraryA
GetModuleHandleW
TlsAlloc
InitializeCriticalSectionAndSpinCount
SetLastError
RaiseException
RtlPcToFileHeader
RtlUnwindEx
InitializeSListHead
GetSystemTimeAsFileTime
GetCurrentThreadId
GetCurrentProcessId
QueryPerformanceCounter
IsDebuggerPresent
IsProcessorFeaturePresent
TerminateProcess
SetUnhandledExceptionFilter
UnhandledExceptionFilter
RtlVirtualUnwind
RtlLookupFunctionEntry
RtlCaptureContext
LCMapStringEx
DecodePointer
EncodePointer
InitializeCriticalSectionEx
GetStringTypeW
user32
MessageBoxW
shell32
ShellExecuteW
advapi32
RegOpenKeyExW
RegGetValueW
DeregisterEventSource
RegisterEventSourceW
ReportEventW
RegCloseKey
api-ms-win-crt-runtime-l1-1-0
_invalid_parameter_noinfo_noreturn
_initialize_onexit_table
_register_onexit_function
_crt_atexit
_exit
_cexit
_seh_filter_exe
_set_app_type
_configure_wide_argv
__p___argc
_initialize_wide_environment
_get_initial_wide_environment
__p___wargv
exit
terminate
_errno
_initterm
abort
_c_exit
_register_thread_local_exe_atexit_callback
_initterm_e
api-ms-win-crt-stdio-l1-1-0
__stdio_common_vsprintf_s
setvbuf
__stdio_common_vswprintf
__stdio_common_vsnwprintf_s
__stdio_common_vfwprintf
_set_fmode
fflush
_wfsopen
__p__commode
fputws
__acrt_iob_func
fputwc
api-ms-win-crt-heap-l1-1-0
_callnewh
_set_new_mode
free
malloc
calloc
api-ms-win-crt-string-l1-1-0
_wcsdup
strcpy_s
wcsnlen
toupper
wcsncmp
strcspn
api-ms-win-crt-convert-l1-1-0
_wtoi
wcstoul
api-ms-win-crt-locale-l1-1-0
_configthreadlocale
localeconv
_lock_locales
_unlock_locales
___mb_cur_max_func
___lc_codepage_func
setlocale
___lc_locale_name_func
__pctype_func
api-ms-win-crt-math-l1-1-0
frexp
__setusermatherr
api-ms-win-crt-time-l1-1-0
_time64
wcsftime
_gmtime64_s
Sections
.text Size: 99KB - Virtual size: 99KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 39KB - Virtual size: 39KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 2KB - Virtual size: 5KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.pdata Size: 5KB - Virtual size: 5KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
_RDATA Size: 512B - Virtual size: 348B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.rsrc Size: 26KB - Virtual size: 26KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 1024B - Virtual size: 840B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ