amstream.pdb
Static task
static1
Behavioral task
behavioral1
Sample
amstream.dll
Resource
win7-20240419-en
Behavioral task
behavioral2
Sample
amstream.dll
Resource
win10v2004-20240508-en
General
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Target
amstream.dll
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Size
69KB
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MD5
382bddde3438f9a65935abc6b3f76d1b
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SHA1
5be9d2ec9e7138af7e6f15ce8abc7cd5e138a3eb
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SHA256
26012b03ad7c0802a2f26bf89c6510a78f6f4ae44d5e5eed164e22db7db334f0
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SHA512
326c7f2c31177ba636273f5321c9b36e4186490597e5712046ce20c75f51a049a2d09514cb58b3f3c5d91966fe6e9d9d327e1269d2329f6ca004b6b208c981c8
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SSDEEP
1536:h2VcC6MtqWgV3vAFNJ3JXS9n5SYCR44u029R+J:DC6MtAAFNJ5XC5SYCi02r+J
Malware Config
Signatures
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource amstream.dll
Files
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amstream.dll.dll regsvr32 windows:6 windows x86 arch:x86
dd5f5ab241a9afee4572a953a4c6952b
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
File Characteristics
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE
IMAGE_FILE_DLL
PDB Paths
Imports
msvcrt
memset
_amsg_exit
_initterm
_XcptFilter
_purecall
??_U@YAPAXI@Z
??_V@YAXPAX@Z
memcpy
??2@YAPAXI@Z
realloc
??3@YAXPAX@Z
free
malloc
_except_handler4_common
_vsnwprintf
kernel32
GetCurrentThreadId
CloseHandle
GetCurrentProcess
WaitForSingleObject
HeapDestroy
lstrcpynW
GetCurrentThread
GetModuleFileNameW
lstrcatW
FreeLibrary
lstrlenA
MultiByteToWideChar
LoadResource
FindResourceW
LoadLibraryExW
DisableThreadLibraryCalls
CreateEventW
lstrcmpW
ResetEvent
SetEvent
InterlockedExchange
Sleep
InterlockedCompareExchange
QueryPerformanceCounter
GetCurrentProcessId
GetSystemTimeAsFileTime
TerminateProcess
lstrcmpiW
SetUnhandledExceptionFilter
CreateSemaphoreW
ReleaseSemaphore
MulDiv
CreateThread
DuplicateHandle
QueueUserAPC
GetModuleHandleW
GetProcAddress
LoadLibraryW
InterlockedDecrement
InterlockedIncrement
DeleteCriticalSection
InitializeCriticalSection
LeaveCriticalSection
EnterCriticalSection
GetLastError
lstrcpyW
lstrlenW
GetTickCount
SizeofResource
UnhandledExceptionFilter
user32
IsRectEmpty
CharNextW
advapi32
RegEnumKeyExW
RegSetValueExW
RegOpenKeyExW
RegCreateKeyExW
RegCloseKey
RegQueryValueExW
RegQueryInfoKeyW
RegDeleteKeyW
RegDeleteValueW
ole32
CoCreateInstance
CoTaskMemRealloc
CoTaskMemAlloc
CoTaskMemFree
oleaut32
LoadTypeLi
RegisterTypeLi
VarI4FromStr
SysFreeString
ddraw
DirectDrawCreate
Exports
Exports
DllCanUnloadNow
DllGetClassObject
DllRegisterServer
DllUnregisterServer
Sections
.text Size: 59KB - Virtual size: 59KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.data Size: 512B - Virtual size: 1KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rsrc Size: 3KB - Virtual size: 2KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 5KB - Virtual size: 4KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ