Static task
static1
Behavioral task
behavioral1
Sample
WindowsUpdate.exe
Resource
win7-20230712-en
Behavioral task
behavioral2
Sample
WindowsUpdate.exe
Resource
win10v2004-20230703-en
General
-
Target
WindowsUpdate.exe
-
Size
2.4MB
-
MD5
3dc1ef3ca64e198997925a41b5c3fee0
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SHA1
90ef90eaaca7c23a6f78246e49cb8366499d6eb7
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SHA256
be9736f5f079f0d19526e01a2599f1279916feb52f8ec4f10e339d7bd96593b0
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SHA512
aa9fddf1525fa96f2ee0fc0288dea2eb2f3d7ac3441c3df80140d19bb2865d13c7fe7c81e0605e0055e98c45c3a170f9948987db66ef4a6e61099668977652dd
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SSDEEP
49152:oLLX60Un8/amF85C4mYgfFevyD11j7124q1p6X9xQKcP1eX:Lx0aWP124qD69xR
Malware Config
Signatures
-
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource WindowsUpdate.exe
Files
-
WindowsUpdate.exe.exe windows x64
f0ea7b7844bbc5bfa9bb32efdcea957c
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
IMAGE_FILE_DEBUG_STRIPPED
Imports
kernel32
WriteFile
WriteConsoleW
WaitForMultipleObjects
WaitForSingleObject
VirtualQuery
VirtualFree
VirtualAlloc
TlsAlloc
SwitchToThread
SuspendThread
SetWaitableTimer
SetUnhandledExceptionFilter
SetProcessPriorityBoost
SetEvent
SetErrorMode
SetConsoleCtrlHandler
ResumeThread
PostQueuedCompletionStatus
LoadLibraryA
LoadLibraryW
SetThreadContext
GetThreadContext
GetSystemInfo
GetSystemDirectoryA
GetStdHandle
GetQueuedCompletionStatusEx
GetProcessAffinityMask
GetProcAddress
GetEnvironmentStringsW
GetConsoleMode
FreeEnvironmentStringsW
ExitProcess
DuplicateHandle
CreateWaitableTimerExW
CreateThread
CreateIoCompletionPort
CreateFileA
CreateEventA
CloseHandle
AddVectoredExceptionHandler
Sections
.text Size: 675KB - Virtual size: 674KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 740KB - Virtual size: 739KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 96KB - Virtual size: 454KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
/4 Size: 512B - Virtual size: 295B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
/19 Size: 132KB - Virtual size: 131KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
/32 Size: 23KB - Virtual size: 23KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
/46 Size: 512B - Virtual size: 43B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
/65 Size: 443KB - Virtual size: 442KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
/78 Size: 128KB - Virtual size: 127KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
/90 Size: 39KB - Virtual size: 38KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
.idata Size: 1KB - Virtual size: 1KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.reloc Size: 13KB - Virtual size: 12KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
.symtab Size: 150KB - Virtual size: 150KB
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ