aswAMSI[.]dll | Triage

Sharing

Copy URL

Twitter E-mail

General

Target

aswAMSI.dll
Size

910KB
MD5

2699c2e43ef0dcab304a2da1cd2c9974
SHA1

e73cc17f181d11f8c1990055b4978d60c43ab327
SHA256

682e9760f8e731c312ebb06bd915cf9980408be07b837bf388a5d31905aeef2d
SHA512

dec4f4877ed37067cc25337819b78f222c7b67679ca89a5f9a695532a7fcf298945db861ad884a928b3c38d68b2e55a17c533939228a4014e2d73b0b5edfd7f9
SSDEEP

24576:qGToWBHtViNz/pIMFRxKxNHfMh0lhSMXlet0+WTkdE:XNVid/pIyx2ZuS+WTr

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
aswAMSI.dll

Files

aswAMSI.dll
.dll regsvr32 windows:6 windows x64 arch:x64

48c283cb204b1a70ea997a1e279a0a2b

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_GUARD_CF

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE
IMAGE_FILE_DLL

Imports

shell32

SHGetFolderPathW

ntdll

RtlUnwindEx
RtlNtStatusToDosError
RtlVirtualUnwind
NtQueryInformationProcess
RtlPcToFileHeader
RtlCaptureContext
RtlLookupFunctionEntry

kernel32

WideCharToMultiByte
DeleteFileW
UnmapViewOfFile
ExitProcess
GetVersionExW
GetModuleHandleA
RaiseException
SetLastError
GetModuleHandleExW
GetCurrentThreadId
Sleep
LocalFree
WaitForSingleObject
CompareStringW
SetFilePointerEx
UnlockFileEx
LockFileEx
GetFileSizeEx
ReadFile
CreateEventW
SetEvent
GetSystemInfo
QueryPerformanceFrequency
QueryPerformanceCounter
ExpandEnvironmentStringsW
GetFileAttributesW
GetWindowsDirectoryW
GetSystemDirectoryW
GetProcessAffinityMask
GetLongPathNameW
VirtualAlloc
VirtualFree
VirtualProtect
EncodePointer
HeapReAlloc
GlobalMemoryStatusEx
GetExitCodeThread
TlsAlloc
TlsFree
TlsSetValue
TlsGetValue
MoveFileExW
FindClose
GetFileInformationByHandle
GetFullPathNameW
CreateDirectoryW
FindFirstFileExW
FindNextFileW
QueryDosDeviceW
HeapSize
FileTimeToSystemTime
FlushFileBuffers
OutputDebugStringA
SetFileInformationByHandle
GetDiskFreeSpaceExW
LoadLibraryExA
K32GetMappedFileNameW
FindFirstVolumeW
FindNextVolumeW
GetVolumePathNamesForVolumeNameW
FindVolumeClose
VirtualQuery
GetSystemTimes
CreateThread
InitializeCriticalSectionAndSpinCount
InterlockedFlushSList
InterlockedPushEntrySList
GetStartupInfoW
InitializeSListHead
IsProcessorFeaturePresent
TerminateProcess
SetUnhandledExceptionFilter
UnhandledExceptionFilter
GetCPInfo
DecodePointer
SetThreadLocale
GetThreadLocale
GetSystemTimeAsFileTime
MapViewOfFile
CreateFileMappingW
CloseHandle
WriteFile
CreateFileW
GetTickCount
GetEnvironmentVariableW
GetCurrentProcess
ProcessIdToSessionId
GetCurrentProcessId
HeapFree
GetProcessHeap
HeapAlloc
InitializeCriticalSection
DeleteCriticalSection
InitializeCriticalSectionEx
GetModuleFileNameW
LoadLibraryExW
FindResourceW
LoadResource
SizeofResource
MultiByteToWideChar
GetLastError
EnterCriticalSection
LeaveCriticalSection
lstrcmpiW
GetModuleHandleW
GetProcAddress
FreeLibrary
ExitThread
FreeLibraryAndExitThread
GetStdHandle
GetFileType
LCMapStringW
GetLocaleInfoW
IsValidLocale
GetUserDefaultLCID
EnumSystemLocalesW
IsValidCodePage
GetACP
GetOEMCP
GetConsoleOutputCP
GetConsoleMode
GetCommandLineA
GetCommandLineW
GetEnvironmentStringsW
FreeEnvironmentStringsW
SetStdHandle
WriteConsoleW
FlsFree
FlsSetValue
FlsGetValue
FlsAlloc
LCMapStringEx
GetLocaleInfoEx
SleepConditionVariableSRW
WakeAllConditionVariable
WakeConditionVariable
InitializeConditionVariable
TryAcquireSRWLockExclusive
AcquireSRWLockExclusive
ReleaseSRWLockExclusive
WaitForSingleObjectEx
GetStringTypeW
FormatMessageA
IsDebuggerPresent
OutputDebugStringW

user32

CharNextW
RegisterClassExW
GetClassInfoExW

advapi32

CryptReleaseContext
CryptGenRandom
CryptAcquireContextW
RegQueryValueExW
SetSecurityDescriptorDacl
InitializeSecurityDescriptor
FreeSid
AddAce
InitializeAcl
GetLengthSid
AllocateAndInitializeSid
RegDeleteValueW
RegCreateKeyExW
RegSetValueExW
RegOpenKeyExW
RegEnumKeyExW
RegQueryInfoKeyW
RegCloseKey
RegDeleteKeyW

ole32

CoCreateInstance
StringFromGUID2
CoTaskMemAlloc
CoTaskMemRealloc
CoTaskMemFree

oleaut32

SysFreeString
SysStringByteLen
VarUI4FromStr

rpcrt4

RpcSsDestroyClientContext
RpcStringBindingComposeW
NdrClientCall3
RpcBindingFromStringBindingW
RpcBindingFree
RpcStringFreeW

Exports

Exports

DllCanUnloadNow
DllGetClassObject
DllInstall
DllRegisterServer
DllUnregisterServer
on_avast_dll_unload

Sections

.text
Size: 537KB - Virtual size: 536KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 306KB - Virtual size: 306KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 18KB - Virtual size: 31KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.pdata
Size: 28KB - Virtual size: 27KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.didat
Size: 512B - Virtual size: 16B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

_RDATA
Size: 512B - Virtual size: 348B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.rsrc
Size: 3KB - Virtual size: 2KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 6KB - Virtual size: 5KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

48c283cb204b1a70ea997a1e279a0a2b

Headers

DLL Characteristics

File Characteristics

Imports

shell32

ntdll

kernel32

user32

advapi32

ole32

oleaut32

rpcrt4

Exports

Exports

Sections

.text Size: 537KB - Virtual size: 536KB

.rdata Size: 306KB - Virtual size: 306KB

.data Size: 18KB - Virtual size: 31KB

.pdata Size: 28KB - Virtual size: 27KB

.didat Size: 512B - Virtual size: 16B

_RDATA Size: 512B - Virtual size: 348B

.rsrc Size: 3KB - Virtual size: 2KB

.reloc Size: 6KB - Virtual size: 5KB

.text
Size: 537KB - Virtual size: 536KB

.rdata
Size: 306KB - Virtual size: 306KB

.data
Size: 18KB - Virtual size: 31KB

.pdata
Size: 28KB - Virtual size: 27KB

.didat
Size: 512B - Virtual size: 16B

_RDATA
Size: 512B - Virtual size: 348B

.rsrc
Size: 3KB - Virtual size: 2KB

.reloc
Size: 6KB - Virtual size: 5KB