Static task
static1
Behavioral task
behavioral1
Sample
bfsvc.exe
Resource
win10-20230220-en
General
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Target
bfsvc.exe
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Size
79KB
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MD5
820b97429e4153a743708b376807ee69
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SHA1
824e6c83c079073139211cc8e77d40b372156d27
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SHA256
57a0279e3b6b158404cfbf5070e33b41963e288a7bb230382b1d3f6116299c75
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SHA512
8e94216ac0cc489f8ef44705dc4bd7072fd921eb2d49ad0fee9a5eaa7dc71801b58172fe48f2ad3be7ae136fe2ceeb5717936231aaa04c1393b435200dfd304e
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SSDEEP
1536:yyMKEiD7X/799wTrzNevR/i6bjCUl5JOF4PaeuO2gngGt:2e7XJe5evR/i6b+aOqieuO2+gq
Malware Config
Signatures
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource bfsvc.exe
Files
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bfsvc.exe.exe windows x64
b186cf092213b0c5bc18db8274ab6da4
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
advapi32
RegQueryValueExW
RegOpenKeyExW
RegCloseKey
LookupPrivilegeValueW
GetSecurityDescriptorSacl
AdjustTokenPrivileges
GetSecurityDescriptorDacl
GetSecurityDescriptorGroup
SetNamedSecurityInfoW
GetSecurityDescriptorControl
GetSecurityDescriptorOwner
OpenProcessToken
ConvertSidToStringSidW
ConvertStringSecurityDescriptorToSecurityDescriptorW
OpenThreadToken
GetTokenInformation
kernel32
GetFileSizeEx
GetLastError
LocalFree
Sleep
GetStartupInfoW
SetUnhandledExceptionFilter
GetModuleHandleW
QueryPerformanceCounter
GetCurrentProcessId
GetCurrentThreadId
GetSystemTimeAsFileTime
GetTickCount
UnhandledExceptionFilter
GetCurrentProcess
TerminateProcess
GetVolumeInformationW
FindFirstFileW
HeapFree
SetLastError
FindNextFileW
WriteFile
GetPrivateProfileSectionW
FindClose
GetVolumePathNameW
CreateFileW
GetFileAttributesW
GetVolumeNameForVolumeMountPointW
GetFullPathNameW
SetFileAttributesW
CopyFileExW
DeleteFileW
SetFileInformationByHandle
GetFileInformationByHandle
GetFileInformationByHandleEx
FreeLibrary
LoadLibraryExW
GetProcAddress
FlushFileBuffers
MapViewOfFile
CreateFileMappingW
GetCurrentThread
UnmapViewOfFile
DeviceIoControl
CreateDirectoryW
GetProcessHeap
MoveFileExW
HeapAlloc
CloseHandle
msvcrt
wcsstr
_wcslwr
wcsnlen
memset
_vsnwprintf_s
fflush
_snwscanf_s
wcschr
wcsrchr
memcpy
?terminate@@YAXXZ
_commode
_fmode
_wcmdln
__C_specific_handler
_initterm
__setusermatherr
_cexit
_exit
exit
__set_app_type
__wgetmainargs
_amsg_exit
_XcptFilter
_wcsicmp
_wcsnicmp
__iob_func
swprintf_s
_vsnwprintf
fwprintf
rpcrt4
UuidCreate
imagehlp
CheckSumMappedFile
shell32
CommandLineToArgvW
shlwapi
PathRemoveBackslashW
ntdll
NtEnumerateBootEntries
NtOpenDirectoryObject
NtTranslateFilePath
NtQueryBootOptions
NtQueryBootEntryOrder
NtQueryValueKey
NtQuerySymbolicLinkObject
NtOpenKey
NtOpenSymbolicLinkObject
RtlImpersonateSelf
NtOpenThreadTokenEx
NtOpenProcessTokenEx
NtAdjustPrivilegesToken
NtQueryDirectoryObject
RtlFreeHeap
RtlAllocateHeap
NtSetInformationFile
LdrAccessResource
LdrFindResource_U
NtOpenFile
NtQueryInformationThread
NtQueryInformationFile
RtlImageNtHeader
NtDeviceIoControlFile
NtSetInformationThread
NtReadFile
NtOpenProcess
NtQueryInformationProcess
RtlNtStatusToDosError
NtClose
RtlInitUnicodeString
NtWriteFile
NtQuerySystemInformation
RtlVirtualUnwind
RtlLookupFunctionEntry
RtlCaptureContext
Sections
.text Size: 45KB - Virtual size: 44KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 28KB - Virtual size: 28KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 512B - Virtual size: 1KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.pdata Size: 1KB - Virtual size: 1KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.rsrc Size: 2KB - Virtual size: 2KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 512B - Virtual size: 48B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ