hijackloader | FortiClientInstaller[.]exe

Resubmissions

07/04/2025, 17:19

250407-vv4pvayl17 10

07/04/2025, 14:55

250407-sar47swjs2 10

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General

Target

FortiClientInstaller.exe
Size

1.3MB
MD5

56ad9dbcf52a0a88e254be81b6fd3334
SHA1

981ea76962733330e35d027b2b89c8ba08c2c8d1
SHA256

7b399ccced1048d15198aeb67d6bcc49ebd88c7ac484811a7000b9e79a5aac90
SHA512

6f3d1789eeebb03db3e1407f5e92b1c17d4136d171c2df09fd79c845e49e47f73a5f229f4e54be9f836ef7222c732e98f3b4ee6529077392d3d007a9afe0e856
SSDEEP

24576:0IWONZguqUO7j/vDnrUf6clUVIA6JGybfUPH/1gCKUmdrEH7fZ:0+ZyUOn/vDrQeVIJGyIvJSQZ

Score

10^/10

hijackloader

Malware Config

Extracted

Family

hijackloader

Attributes

directory
%APPDATA%\m545JfQz5
inject_dll
%windir%\SysWOW64\pla.dll

xor.hex

Signatures

Detects HijackLoader (aka IDAT Loader) 1 IoCs

resource	yara_rule
sample	family_hijackloader

Hijackloader family
hijackloader

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
FortiClientInstaller.exe

Files

FortiClientInstaller.exe
.exe windows:6 windows x86 arch:x86

f2edebd181f49cbbeb011a52c91edc2d

Headers

DLL Characteristics

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_32BIT_MACHINE

Imports

crypt32

CertFreeCertificateContext
CertGetCertificateContextProperty
CertNameToStrW
CertGetCertificateChain
CertFreeCertificateChain
CryptUnprotectData

psapi

EnumProcessModules
EnumProcesses
GetModuleFileNameExW

userenv

UnloadUserProfile
CreateEnvironmentBlock
DestroyEnvironmentBlock
LoadUserProfileW

version

GetFileVersionInfoSizeW
VerQueryValueW
GetFileVersionInfoW

ws2_32

socket
setsockopt
inet_addr
htons
inet_ntoa
bind
ntohs
ntohl
WSAStartup
send
recv
getsockname
closesocket
gethostbyname
gethostname
connect

kernel32

WriteConsoleW
SetEnvironmentVariableA
FreeEnvironmentStringsW
GetEnvironmentStringsW
GetCommandLineA
GetOEMCP
IsValidCodePage
FindFirstFileExW
GetFullPathNameW
SetEndOfFile
SetStdHandle
EnumSystemLocalesW
IsValidLocale
GetTimeFormatW
GetDateFormatW
GetConsoleCP
ReadConsoleW
GetConsoleMode
SetFilePointerEx
GetStdHandle
GetModuleHandleExW
ExitProcess
MoveFileExW
SystemTimeToTzSpecificLocalTime
PeekNamedPipe
GetFileType
DecodePointer
RaiseException
GetLastError
InitializeCriticalSectionEx
DeleteCriticalSection
GetCommandLineW
ExpandEnvironmentStringsW
GetLongPathNameW
CloseHandle
GetCurrentProcessId
CreateProcessW
ProcessIdToSessionId
OpenProcess
GetWindowsDirectoryW
FreeLibrary
GetModuleFileNameW
GetModuleHandleW
GetProcAddress
LocalFree
LoadLibraryW
Sleep
FlushFileBuffers
ReadFile
ConnectNamedPipe
DisconnectNamedPipe
CreateNamedPipeW
GetOverlappedResult
SetEvent
ResetEvent
ReleaseMutex
WaitForSingleObject
WaitForMultipleObjectsEx
CreateMutexW
CreateEventW
CreateThread
SetLastError
OpenMutexW
GetCurrentProcess
GetSystemDirectoryW
LoadLibraryExW
LoadResource
SizeofResource
SetDefaultDllDirectories
lstrcmpiW
FindResourceW
SetSearchPathMode
MultiByteToWideChar
CreateToolhelp32Snapshot
Process32FirstW
Process32NextW
DeleteFileW
FindClose
FindFirstFileW
FindNextFileW
GetFileAttributesW
SetFileAttributesW
GetEnvironmentVariableW
CreateFileW
GetVolumeInformationW
DeviceIoControl
GetVersionExW
SetCurrentDirectoryW
GetCurrentDirectoryW
GetDriveTypeW
GetFileAttributesExW
TlsAlloc
TlsGetValue
TlsSetValue
WriteFile
SetNamedPipeHandleState
WaitNamedPipeW
WaitForMultipleObjects
CopyFileW
GetSystemInfo
HeapAlloc
HeapFree
GetProcessHeap
TerminateProcess
FindFirstVolumeW
FindNextVolumeW
FindVolumeClose
GetLogicalDrives
GetVolumePathNameW
QueryDosDeviceW
GetVolumeNameForVolumeMountPointW
HeapReAlloc
HeapSize
FindFirstVolumeMountPointW
FindNextVolumeMountPointW
FindVolumeMountPointClose
WideCharToMultiByte
TerminateThread
GetTickCount
FileTimeToSystemTime
GetTimeZoneInformation
GetLocaleInfoW
CreateDirectoryW
GetTempPathW
CancelIo
InitializeCriticalSection
EnterCriticalSection
LeaveCriticalSection
SetWaitableTimer
CancelWaitableTimer
GetCurrentThreadId
CreateWaitableTimerW
GetUserDefaultLCID
GetACP
SetThreadLocale
GetUserDefaultUILanguage
VirtualProtect
VirtualQuery
LoadLibraryExA
QueryPerformanceCounter
IsDebuggerPresent
OutputDebugStringW
EncodePointer
InitializeSListHead
InterlockedPopEntrySList
InterlockedPushEntrySList
FlushInstructionCache
IsProcessorFeaturePresent
VirtualAlloc
VirtualFree
RtlUnwind
GetStartupInfoW
SetUnhandledExceptionFilter
UnhandledExceptionFilter
GetCPInfo
LCMapStringW
CompareStringW
GetSystemTimeAsFileTime
TlsFree
InitializeCriticalSectionAndSpinCount
GetStringTypeW

user32

IsWindowVisible
CreateDialogParamW
LoadMenuW
DestroyMenu
EnableMenuItem
GetSubMenu
TrackPopupMenu
SetForegroundWindow
InvalidateRect
GetWindowTextW
GetClientRect
SetWindowPos
MapWindowPoints
GetWindowLongW
GetWindow
MonitorFromWindow
GetMonitorInfoW
OpenInputDesktop
CloseDesktop
GetThreadDesktop
GetUserObjectInformationW
SendMessageW
ShowWindow
PostQuitMessage
DefWindowProcW
GetCursorPos
UnregisterClassW
MessageBoxW
FindWindowW
GetWindowThreadProcessId
GetMessageW
DispatchMessageW
LoadStringW
GetParent
SetWindowLongW
GetWindowRect
SetWindowTextW
EnableWindow
GetDlgItem
RegisterWindowMessageW
GetSystemMetrics
DestroyIcon
LoadIconW
CharNextW
DestroyWindow
ExitWindowsEx
PostMessageW

ole32

CoTaskMemRealloc
CoTaskMemFree
IIDFromString
StringFromGUID2
CoCreateGuid
CoTaskMemAlloc
CoInitializeEx
CoInitialize
CoCreateInstance
CoUninitialize
CoSetProxyBlanket

oleaut32

VariantCopy
VarUI4FromStr
VariantChangeType
VariantClear
VariantInit
SysFreeString
SysAllocString

Exports

Exports

BeginHttpRequest
BeginHttpResponse
FCP_add_param
FCP_append_objdata_ff
FCP_break_obj_header
FCP_breakup_data_item
FCP_calculate_obj_head_chksum
FCP_chk_partial_obj_files
FCP_cleanup
FCP_clear_object_storage
FCP_clear_package
FCP_clear_params
FCP_clear_request
FCP_clear_response
FCP_combine_params
FCP_create_package_hdr
FCP_del_param
FCP_delete_file
FCP_get_file_size
FCP_get_obj_resume_info
FCP_get_object_desc
FCP_get_param
FCP_init_object_storage
FCP_init_package
FCP_init_params
FCP_init_request
FCP_init_request_for_sending
FCP_init_response
FCP_init_response_for_sending
FCP_initialize
FCP_load_object
FCP_load_package
FCP_pack_obj
FCP_parse_params
FCP_recv_request
FCP_recv_response
FCP_send_n_recv
FCP_send_object
FCP_send_request
FCP_send_response
FCP_set_param
FCP_unpack_obj
FCP_unpack_obj_ff
FCP_unpack_obj_fnfn
FCP_verify_object_hdr
FCP_verify_package_hdr
FR_cleanup
FR_close
FR_connect
FR_connected
FR_get_local_addr
FR_initialize
FR_read
FR_write

Sections

.text
Size: 303KB - Virtual size: 302KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 120KB - Virtual size: 119KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 6KB - Virtual size: 21KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.didat
Size: 512B - Virtual size: 288B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 857KB - Virtual size: 857KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 17KB - Virtual size: 16KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Resubmissions

Sharing

General

Malware Config

Extracted

Signatures

Files

f2edebd181f49cbbeb011a52c91edc2d

Headers

DLL Characteristics

File Characteristics

Imports

crypt32

psapi

userenv

version

ws2_32

kernel32

user32

ole32

oleaut32

Exports

Exports

Sections

.text Size: 303KB - Virtual size: 302KB

.rdata Size: 120KB - Virtual size: 119KB

.data Size: 6KB - Virtual size: 21KB

.didat Size: 512B - Virtual size: 288B

.rsrc Size: 857KB - Virtual size: 857KB

.reloc Size: 17KB - Virtual size: 16KB

.text
Size: 303KB - Virtual size: 302KB

.rdata
Size: 120KB - Virtual size: 119KB

.data
Size: 6KB - Virtual size: 21KB

.didat
Size: 512B - Virtual size: 288B

.rsrc
Size: 857KB - Virtual size: 857KB

.reloc
Size: 17KB - Virtual size: 16KB