Youdao[.]zip | Triage

Sharing

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General

Target

Youdao.zip
Size

97.4MB
MD5

364f50381d86ece7a52896476cbad03e
SHA1

7d25ba3d50c4347bc4ecdf9934f349c91edc30ca
SHA256

1dd7e1ef408c78e159482365b97e5856076374a2311bf53bfb19639ec9f25dae
SHA512

9c554e6b9e63bfa3465f90b317fff355158dd9efdf6a4fd7f57f68452aa21bd662ae0ac7971098cac3724f7c3d4e0a309595cc0e798e66210d78f55d35a7a532
SSDEEP

3145728:rl4nUfn5e30V3R9eu4ygvv/091kAHb7LHxqJa:rCgzXx2/GSU3L0g

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
unpack001/Youdao.exe

Files

Youdao.zip
.zip

Password: INFECTED
Youdao.exe
.exe windows:5 windows x86

Password: INFECTED

1ff847646487d56f85778df99ff3728a

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE

Imports

kernel32

_lclose
GetModuleFileNameA
_lread
_llseek
_lopen
_lwrite
_lcreat
CreateDirectoryA
SetCurrentDirectoryA
lstrcatA
FreeLibrary
GetProcAddress
LoadLibraryA
GetDiskFreeSpaceA
GetFileAttributesA
RemoveDirectoryA
DeleteFileA
lstrlenA
GetCurrentDirectoryA
CloseHandle
GetExitCodeProcess
GetLastError
LocalFree
GetCurrentProcess
MoveFileExA
Sleep
GetStringTypeW
MultiByteToWideChar
LCMapStringW
HeapReAlloc
RtlUnwind
HeapSize
lstrcpyA
GetTempPathA
CompareStringA
IsValidCodePage
GetOEMCP
GetModuleHandleW
ExitProcess
DecodePointer
HeapFree
HeapAlloc
GetCommandLineA
HeapSetInformation
GetStartupInfoW
InitializeCriticalSectionAndSpinCount
DeleteCriticalSection
LeaveCriticalSection
EnterCriticalSection
EncodePointer
LoadLibraryW
UnhandledExceptionFilter
SetUnhandledExceptionFilter
IsDebuggerPresent
TerminateProcess
TlsAlloc
TlsGetValue
TlsSetValue
TlsFree
InterlockedIncrement
SetLastError
GetCurrentThreadId
InterlockedDecrement
WriteFile
GetStdHandle
GetModuleFileNameW
IsProcessorFeaturePresent
HeapCreate
FreeEnvironmentStringsW
WideCharToMultiByte
GetEnvironmentStringsW
SetHandleCount
GetFileType
QueryPerformanceCounter
GetTickCount
GetCurrentProcessId
GetSystemTimeAsFileTime
GetCPInfo
GetACP

user32

TranslateMessage
DispatchMessageA
PeekMessageA
wsprintfA
LoadCursorA
SetCursor
MessageBoxA
MsgWaitForMultipleObjects

advapi32

GetTokenInformation
OpenProcessToken

shell32

ShellExecuteExA

Sections

.text
Size: 22KB - Virtual size: 21KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 12KB - Virtual size: 11KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 3KB - Virtual size: 6KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 117KB - Virtual size: 116KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 4KB - Virtual size: 4KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

Password: INFECTED

Password: INFECTED

1ff847646487d56f85778df99ff3728a

Headers

DLL Characteristics

File Characteristics

Imports

kernel32

user32

advapi32

shell32

Sections

.text Size: 22KB - Virtual size: 21KB

.rdata Size: 12KB - Virtual size: 11KB

.data Size: 3KB - Virtual size: 6KB

.rsrc Size: 117KB - Virtual size: 116KB

.reloc Size: 4KB - Virtual size: 4KB

.text
Size: 22KB - Virtual size: 21KB

.rdata
Size: 12KB - Virtual size: 11KB

.data
Size: 3KB - Virtual size: 6KB

.rsrc
Size: 117KB - Virtual size: 116KB

.reloc
Size: 4KB - Virtual size: 4KB