yellow[.]exe | Triage

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General

Target

yellow.exe
Size

3.8MB
MD5

660baecfc41ca431adbe8fa011177e25
SHA1

199280a1d9e21db25da06fbacfb192d8b63f3b5c
SHA256

59613b4c8ebe84d4f1bf13727f65254490e33e3766100adc00c08e0fd6516b82
SHA512

b65f176ca52a84959c5ce17b71a51088659e8f05bf7aac787667d3f41c9043dfc973b6649a4721658f4c8c425eb1dcd6fa63e18f88b91517d2454b85a72033dc
SSDEEP

49152:rU4LP/92gomZgUYj87j7tmScngxtL1DH2iPLAN74D9HIS7RQHGoADb3wMoNI/HFq:Q4LMmqjgj3DzckxwAvliAu5PJq2

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
yellow.exe

Files

yellow.exe
.exe windows x64

8cb7c442414417753fb5d1e55bcd8d76

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

Imports

kernel32

GetStdHandle
GetConsoleMode
WaitForSingleObject
WriteConsoleW
WaitForSingleObjectEx
CreateMutexA
ReleaseMutex
GetEnvironmentVariableW
RtlLookupFunctionEntry
GetModuleHandleW
FormatMessageW
GetTempPathW
GetModuleFileNameW
CreateFileW
GetFileInformationByHandleEx
GetFullPathNameW
SetFilePointerEx
GlobalUnlock
CreateDirectoryW
FindFirstFileW
FindClose
GetCurrentThread
ReleaseSRWLockExclusive
IsProcessorFeaturePresent
InitializeSListHead
GetEnvironmentStringsW
FreeEnvironmentStringsW
CompareStringOrdinal
GetSystemDirectoryW
GetFileInformationByHandle
CreateProcessW
GetFileAttributesW
DuplicateHandle
GetCurrentProcessId
CreateNamedPipeW
CreateThread
ReadFileEx
SleepEx
WriteFileEx
GlobalFree
QueryPerformanceCounter
QueryPerformanceFrequency
GetSystemTimeAsFileTime
GetCurrentDirectoryW
RtlCaptureContext
AcquireSRWLockShared
ReleaseSRWLockShared
CopyFileExW
GetModuleHandleA
Sleep
WakeConditionVariable
PostQueuedCompletionStatus
GlobalAlloc
GlobalLock
GlobalSize
WideCharToMultiByte
SetFileCompletionNotificationModes
CreateIoCompletionPort
FileTimeToSystemTime
SystemTimeToTzSpecificLocalTime
SystemTimeToFileTime
GetTimeZoneInformation
RtlVirtualUnwind
FlushFileBuffers
GetTickCount
MapViewOfFile
CreateFileMappingW
FormatMessageA
GetSystemTime
FreeLibrary
GetFileSize
LockFileEx
LocalFree
UnlockFile
HeapDestroy
HeapCompact
LoadLibraryW
DeleteFileW
DeleteFileA
CreateFileA
FlushViewOfFile
OutputDebugStringW
GetFileAttributesExW
GetFileAttributesA
GetDiskFreeSpaceA
GetTempPathA
HeapSize
HeapValidate
UnmapViewOfFile
CreateMutexW
UnlockFileEx
SetEndOfFile
GetFullPathNameA
SetFilePointer
LockFile
OutputDebugStringA
GetDiskFreeSpaceW
WriteFile
HeapCreate
ReadFile
AreFileApisANSI
InitializeCriticalSection
EnterCriticalSection
LeaveCriticalSection
TryEnterCriticalSection
DeleteCriticalSection
GetCurrentThreadId
UnhandledExceptionFilter
TryAcquireSRWLockExclusive
SleepConditionVariableSRW
GetProcessHeap
MultiByteToWideChar
GetFinalPathNameByHandleW
SetLastError
HeapAlloc
SwitchToThread
SetThreadStackGuarantee
AddVectoredExceptionHandler
GetCurrentProcess
GetProcAddress
LoadLibraryA
WakeAllConditionVariable
HeapReAlloc
GetSystemInfo
GetLastError
SetHandleInformation
IsDebuggerPresent
CloseHandle
AcquireSRWLockExclusive
GetQueuedCompletionStatusEx
SetUnhandledExceptionFilter
GetWindowsDirectoryW
TerminateProcess
FindNextFileW
HeapFree

ws2_32

ioctlsocket
WSASocketW
socket
bind
listen
accept
setsockopt
WSASend
connect
getaddrinfo
freeaddrinfo
WSAStartup
getsockopt
WSAIoctl
WSACleanup
recv
send
getsockname
WSAGetLastError
getpeername
shutdown
closesocket

crypt32

CertDuplicateCertificateContext
CertDuplicateStore
CryptUnprotectData
CertFreeCertificateContext
CertDuplicateCertificateChain
CertAddCertificateContextToStore
CertEnumCertificatesInStore
CertCloseStore
CertOpenStore
CertGetCertificateChain
CertFreeCertificateChain
CertVerifyCertificateChainPolicy

advapi32

CheckTokenMembership
RegQueryValueExW
AllocateAndInitializeSid
RegCreateKeyExA
FreeSid
RegSetValueExA
RegOpenKeyExW
SystemFunction036
RegCloseKey

bcrypt

BCryptGenRandom

user32

EnumDisplaySettingsExW
GetMonitorInfoW
OpenClipboard
EnumDisplayMonitors
SetClipboardData
EmptyClipboard
CloseClipboard
GetClipboardData

ntdll

NtCreateFile
NtCancelIoFileEx
NtDeviceIoControlFile
RtlNtStatusToDosError

secur32

InitializeSecurityContextW
QueryContextAttributesW
EncryptMessage
FreeContextBuffer
DeleteSecurityContext
DecryptMessage
ApplyControlToken
FreeCredentialsHandle
AcceptSecurityContext
AcquireCredentialsHandleA

gdi32

CreateCompatibleDC
CreateCompatibleBitmap
SelectObject
SetStretchBltMode
StretchBlt
GetDIBits
GetObjectW
DeleteObject
DeleteDC
GetDeviceCaps
CreateDCW

ole32

CoInitializeEx
CoInitializeSecurity

vcruntime140

memmove
memcpy
__current_exception_context
__current_exception
__C_specific_handler
memset
__CxxFrameHandler3
memcmp
strrchr

api-ms-win-crt-string-l1-1-0

strncmp
strcmp
strlen
strcspn

api-ms-win-crt-utility-l1-1-0

_rotl64
qsort

api-ms-win-crt-heap-l1-1-0

_msize
_set_new_mode
malloc
free
realloc

api-ms-win-crt-time-l1-1-0

_localtime64_s

api-ms-win-crt-math-l1-1-0

_dclass
log
__setusermatherr

api-ms-win-crt-runtime-l1-1-0

_exit
exit
_initterm_e
_register_thread_local_exe_atexit_callback
_initterm
__p___argc
__p___argv
_beginthreadex
_endthreadex
_initialize_onexit_table
_cexit
_seh_filter_exe
_set_app_type
_register_onexit_function
_c_exit
terminate
_configure_narrow_argv
_initialize_narrow_environment
_get_initial_narrow_environment
_crt_atexit

api-ms-win-crt-stdio-l1-1-0

_set_fmode
__p__commode

api-ms-win-crt-locale-l1-1-0

_configthreadlocale

Sections

.text
Size: 2.6MB - Virtual size: 2.6MB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 1.1MB - Virtual size: 1.1MB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 24KB - Virtual size: 27KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.pdata
Size: 64KB - Virtual size: 63KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 26KB - Virtual size: 25KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

8cb7c442414417753fb5d1e55bcd8d76

Headers

DLL Characteristics

File Characteristics

Imports

kernel32

ws2_32

crypt32

advapi32

bcrypt

user32

ntdll

secur32

gdi32

ole32

vcruntime140

api-ms-win-crt-string-l1-1-0

api-ms-win-crt-utility-l1-1-0

api-ms-win-crt-heap-l1-1-0

api-ms-win-crt-time-l1-1-0

api-ms-win-crt-math-l1-1-0

api-ms-win-crt-runtime-l1-1-0

api-ms-win-crt-stdio-l1-1-0

api-ms-win-crt-locale-l1-1-0

Sections

.text Size: 2.6MB - Virtual size: 2.6MB

.rdata Size: 1.1MB - Virtual size: 1.1MB

.data Size: 24KB - Virtual size: 27KB

.pdata Size: 64KB - Virtual size: 63KB

.reloc Size: 26KB - Virtual size: 25KB

.text
Size: 2.6MB - Virtual size: 2.6MB

.rdata
Size: 1.1MB - Virtual size: 1.1MB

.data
Size: 24KB - Virtual size: 27KB

.pdata
Size: 64KB - Virtual size: 63KB

.reloc
Size: 26KB - Virtual size: 25KB