Static task
static1
Behavioral task
behavioral1
Sample
autochk.exe
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
autochk.exe
Resource
win10v2004-20230220-en
General
-
Target
autochk.exe
-
Size
934KB
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MD5
8fdbbeaba922f8f0a8d84604b2fa0f73
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SHA1
6d4f2b8e75402f9a24b3b0745034f6ca2513a1e9
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SHA256
47fb724502dec4d7ba8ee06075b66ae51fb5d84ec9b82721300456740fd2e544
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SHA512
d09979213f0c889013a2443d0ef78a9b5036b0fec1b9cd94aeab4d1ed93df60f5c829943cffd8329bdaaa1069e37d59cb35f237a368ff715013f96afe8c25720
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SSDEEP
12288:c5w2mo36OpCEmK2sFEFOPMWi7dwcnFLNloC3oI:IwtOpUWEMPMWi7dwwNBY
Malware Config
Signatures
-
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource autochk.exe
Files
-
autochk.exe.exe windows x86
7bd608422ea0de73ae8b966e400724dc
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_GUARD_CF
File Characteristics
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE
Imports
ntdll
_wcsicmp
NtOpenKey
RtlPublishWnfStateData
NtQuerySymbolicLinkObject
LdrSetMUICacheType
RtlSetSystemBootStatus
RtlInitUnicodeString
RtlGetSystemBootStatus
RtlPrefixUnicodeString
NtSerializeBoot
NtClose
NtWriteFile
NtFsControlFile
wcsstr
NtQueryDirectoryObject
NtCreateFile
NtOpenFile
NtQueryValueKey
NtTerminateProcess
RtlCaptureContext
RtlUnhandledExceptionFilter
_aullshr
RtlUnwind
memmove
RtlEqualUnicodeString
DbgPrintEx
NtOpenSymbolicLinkObject
NtQuerySystemTime
NtOpenDirectoryObject
RtlCompareUnicodeString
RtlFreeAnsiString
RtlAllocateHeap
RtlNormalizeProcessParams
RtlUnicodeStringToAnsiString
isspace
_vsnprintf
_vsnwprintf
RtlMultiByteToUnicodeN
RtlOemToUnicodeN
RtlSetLastWin32ErrorAndNtStatusFromNtStatus
RtlUnicodeToMultiByteN
RtlUnicodeToOemN
wcsspn
_wtol
_wtoi64
_wcsupr
_wcslwr
wcschr
NtDeviceIoControlFile
RtlQueryRegistryValuesEx
RtlWriteRegistryValue
RtlGetPersistedStateLocation
wcscpy_s
wcscat_s
NtQueryInformationFile
NtQueryVolumeInformationFile
wcstoul
_wcstoui64
NtReadFile
RtlRaiseStatus
qsort
NtDelayExecution
NtQuerySystemInformation
RtlSizeHeap
RtlFreeHeap
NtDrawText
swprintf_s
NtCreateEvent
NtClearEvent
NtSetThreadExecutionState
NtWaitForMultipleObjects
NtCancelIoFile
RtlNumberGenericTableElementsAvl
RtlDosPathNameToNtPathName_U_WithStatus
RtlFreeUnicodeString
NtOpenProcessToken
NtAdjustPrivilegesToken
NtShutdownSystem
RtlExpandEnvironmentStrings_U
NtSetInformationFile
RtlValidRelativeSecurityDescriptor
RtlGetVersion
RtlTimeToTimeFields
VerSetConditionMask
RtlVerifyVersionInfo
NtDisplayString
RtlRandomEx
NtQueryPerformanceCounter
isprint
RtlAcquireSRWLockExclusive
RtlReleaseSRWLockExclusive
RtlEnterCriticalSection
RtlTryEnterCriticalSection
RtlLeaveCriticalSection
RtlDeleteCriticalSection
RtlInitializeSRWLock
RtlInitializeCriticalSection
NtFreeVirtualMemory
NtSetEvent
RtlCaptureStackBackTrace
NtAllocateVirtualMemory
NtWaitForSingleObject
NtResetEvent
wcsncmp
RtlFindMessage
RtlInitUTF8StringEx
RtlInitAnsiStringEx
RtlUTF8StringToUnicodeString
RtlAnsiStringToUnicodeString
RtlFormatMessage
RtlDeleteSecurityObject
RtlLengthRequiredSid
RtlInitializeSid
RtlSubAuthoritySid
RtlLengthSid
RtlCopySid
RtlAddAce
RtlCreateAcl
RtlQueryInformationAcl
RtlCreateSecurityDescriptor
RtlSetGroupSecurityDescriptor
RtlSetDaclSecurityDescriptor
RtlNewSecurityObject
RtlValidSecurityDescriptor
RtlLengthSecurityDescriptor
RtlAddAccessAllowedAce
RtlInitializeGenericTable
RtlInsertElementGenericTable
RtlInitializeBitMap
RtlSetBits
RtlLookupElementGenericTable
RtlClearBits
RtlFindSetBits
RtlDeleteElementGenericTable
RtlEnumerateGenericTableWithoutSplaying
RtlNumberOfSetBits
RtlInitializeGenericTableAvl
RtlEnumerateGenericTableAvl
RtlLookupFirstMatchingElementGenericTableAvl
RtlEnumerateGenericTableWithoutSplayingAvl
RtlDeleteElementGenericTableAvl
RtlLookupElementGenericTableFullAvl
RtlInsertElementGenericTableFullAvl
RtlDeleteElementGenericTableAvlEx
RtlInsertElementGenericTableAvl
RtlLookupElementGenericTableAvl
RtlSystemTimeToLocalTime
RtlCrc64
RtlUpcaseUnicodeString
RtlComputeCrc32
DbgPrint
NtOpenThreadToken
_wcsnicmp
RtlDosPathNameToNtPathName_U
RtlCreateSystemVolumeInformationFolder
EtwEventUnregister
EtwEventRegister
EtwEventSetInformation
EtwEventWriteTransfer
NtFlushBuffersFile
_alldiv
_allmul
_allrem
_allshl
_aulldiv
_aullrem
_chkstk
memcmp
memcpy
memset
bcd
BcdCloseObject
BcdGetElementData
BcdOpenObject
BcdOpenStore
BcdForciblyUnloadStore
Sections
.text Size: 579KB - Virtual size: 578KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.data Size: 11KB - Virtual size: 12KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.idata Size: 5KB - Virtual size: 5KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.rsrc Size: 321KB - Virtual size: 321KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
.reloc Size: 15KB - Virtual size: 15KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ