check[.]exe | Triage

Sharing

Copy URL Twitter E-mail

General

Target

check.exe
Size

1.4MB
MD5

03b57b27052b498ba655b65e21b03f87
SHA1

0e145c2a88677ccb7e4c25699d0ca486abb899e3
SHA256

97f531c05d851eb70e017a14e17b45fb47713df86467b698418eab4c85c0fabc
SHA512

c7d6aa0478166ae3285d8afc0b577b2eaf43988266a7601cf1fd12911ae240433e6d1a42ce8d2c0cb66b2b21c8b697c8bacdd267d4502473c1d593a2d90fd6f4
SSDEEP

24576:MEPUa0XXvEnZ/Z1vJZLjBMEtxUw8trQn652TOa:18aUv+1vJZKEtSw8QF

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
check.exe

Files

check.exe
.exe windows:4 windows x64

26b0677e8111cd43ebf9fc6d74c39041

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LINE_NUMS_STRIPPED
IMAGE_FILE_LOCAL_SYMS_STRIPPED
IMAGE_FILE_LARGE_ADDRESS_AWARE
IMAGE_FILE_DEBUG_STRIPPED

Imports

kernel32

DeleteCriticalSection
EnterCriticalSection
InitializeCriticalSection
LeaveCriticalSection
RaiseException
RtlCaptureContext
RtlLookupFunctionEntry
RtlUnwindEx
RtlVirtualUnwind
VirtualProtect
VirtualQuery
__C_specific_handler
AcquireSRWLockExclusive
AddVectoredExceptionHandler
CloseHandle
CompareStringOrdinal
CreateFileW
CreateIoCompletionPort
CreateNamedPipeW
CreateProcessW
CreateThread
DeleteProcThreadAttributeList
DuplicateHandle
ExitProcess
FormatMessageW
FreeEnvironmentStringsW
FreeLibrary
GetConsoleMode
GetCurrentProcess
GetCurrentProcessId
GetCurrentThread
GetEnvironmentStringsW
GetEnvironmentVariableW
GetFileAttributesW
GetFullPathNameW
GetLastError
GetModuleFileNameW
GetModuleHandleA
GetModuleHandleW
GetProcAddress
GetProcessHeap
GetQueuedCompletionStatusEx
GetStdHandle
GetSystemDirectoryW
GetTempPathW
GetWindowsDirectoryW
GlobalMemoryStatusEx
HeapAlloc
HeapFree
HeapReAlloc
InitOnceBeginInitialize
InitOnceComplete
InitializeProcThreadAttributeList
LoadLibraryA
MultiByteToWideChar
PostQueuedCompletionStatus
QueryPerformanceCounter
QueryPerformanceFrequency
ReadFileEx
ReleaseSRWLockExclusive
SetFileCompletionNotificationModes
SetHandleInformation
SetLastError
SetThreadStackGuarantee
SetUnhandledExceptionFilter
Sleep
SleepConditionVariableSRW
SleepEx
SwitchToThread
TlsAlloc
TlsFree
TlsGetValue
TlsSetValue
TryAcquireSRWLockExclusive
UpdateProcThreadAttribute
WaitForSingleObject
WakeAllConditionVariable
WakeConditionVariable
WriteConsoleW
WriteFileEx

msvcrt

__getmainargs
__initenv
__iob_func
__set_app_type
__setusermatherr
_amsg_exit
_cexit
_commode
_fmode
_fpreset
_initterm
_onexit
abort
calloc
exit
fprintf
free
fwrite
malloc
memcmp
memcpy
memmove
memset
signal
strlen
strncmp
vfprintf

ntdll

NtCancelIoFileEx
NtCreateFile
NtDeviceIoControlFile
NtWriteFile
RtlNtStatusToDosError

advapi32

RegCloseKey
RegOpenKeyExW
RegQueryValueExW
SystemFunction036

bcrypt

BCryptGenRandom

crypt32

CertAddCertificateContextToStore
CertCloseStore
CertDuplicateCertificateChain
CertDuplicateCertificateContext
CertDuplicateStore
CertEnumCertificatesInStore
CertFreeCertificateChain
CertFreeCertificateContext
CertGetCertificateChain
CertOpenStore
CertVerifyCertificateChainPolicy

ole32

CoCreateInstance
CoInitializeEx
CoInitializeSecurity
CoSetProxyBlanket

oleaut32

GetErrorInfo
SafeArrayAccessData
SafeArrayDestroy
SafeArrayGetLBound
SafeArrayGetUBound
SafeArrayUnaccessData
SysAllocStringLen
SysFreeString
SysStringLen
VariantClear

secur32

AcceptSecurityContext
AcquireCredentialsHandleA
ApplyControlToken
DecryptMessage
DeleteSecurityContext
EncryptMessage
FreeContextBuffer
FreeCredentialsHandle
InitializeSecurityContextW
QueryContextAttributesW

ws2_32

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

Sections

.text
Size: 1.0MB - Virtual size: 1.0MB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.data
Size: 512B - Virtual size: 336B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rdata
Size: 352KB - Virtual size: 352KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.pdata
Size: 15KB - Virtual size: 15KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.xdata
Size: 20KB - Virtual size: 19KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.bss
Size: - Virtual size: 576B

IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.idata
Size: 7KB - Virtual size: 7KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.CRT
Size: 512B - Virtual size: 112B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.reloc
Size: 3KB - Virtual size: 3KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

26b0677e8111cd43ebf9fc6d74c39041

Headers

DLL Characteristics

File Characteristics

Imports

kernel32

msvcrt

ntdll

advapi32

bcrypt

crypt32

ole32

oleaut32

secur32

ws2_32

Sections

.text Size: 1.0MB - Virtual size: 1.0MB

.data Size: 512B - Virtual size: 336B

.rdata Size: 352KB - Virtual size: 352KB

.pdata Size: 15KB - Virtual size: 15KB

.xdata Size: 20KB - Virtual size: 19KB

.bss Size: - Virtual size: 576B

.idata Size: 7KB - Virtual size: 7KB

.CRT Size: 512B - Virtual size: 112B

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

.reloc Size: 3KB - Virtual size: 3KB

.text
Size: 1.0MB - Virtual size: 1.0MB

.data
Size: 512B - Virtual size: 336B

.rdata
Size: 352KB - Virtual size: 352KB

.pdata
Size: 15KB - Virtual size: 15KB

.xdata
Size: 20KB - Virtual size: 19KB

.bss
Size: - Virtual size: 576B

.idata
Size: 7KB - Virtual size: 7KB

.CRT
Size: 512B - Virtual size: 112B

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

.reloc
Size: 3KB - Virtual size: 3KB