LsaIso[.]exe | Triage

Sharing

Copy URL Twitter E-mail

General

Target

LsaIso.exe
Size

352KB
MD5

afaa9a88dfa6580f11e07d2f4709ed87
SHA1

6fe8ce412f3762edf9f640a96ddbe9b3c30c29ed
SHA256

74d594864655f53d659edff569844c8da622da8e6b4391906f14c73d7496c7fc
SHA512

46da342024a3dd24f18f82d5937835db37a0a6457637498cc6efe58e31bfe8d7a6b726cbdd07fd660e88eea79091728817a733087713cae49ce21ee1d56cceec
SSDEEP

6144:b6oQBbJlCqiKpW1ZDhitrJ06WQI+/WHZMMPkNB0IqCgA:mHBbJlCqiKUliLqgoMMP25qpA

Score

1^/10

Malware Config

Signatures

Files

LsaIso.exe
.exe windows x64

af154b6fdad014759cdc0b2f60a5e24c

Code Sign

33:00:00:03:7f:c0:e0:39:ce:f3:f0:06:bb:00:00:00:00:03:7f
Certificate

Issuer

CN=Microsoft Windows Production PCA 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Not Before

10/03/2022, 19:24

Not After

08/03/2023, 19:24

Subject

CN=Microsoft Windows,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Extended Key Usages

ExtKeyUsageCodeSigning

61:07:76:56:00:00:00:00:00:08
Certificate

Issuer

CN=Microsoft Root Certificate Authority 2010,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Not Before

19/10/2011, 18:41

Not After

19/10/2026, 18:51

Subject

CN=Microsoft Windows Production PCA 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

09:8e:0f:80:21:46:da:7a:85:77:31:4f:58:5a:42:97:7d:01:df:4e:6d:fa:76:f7:d1:3b:1b:59:a9:e5:83:2f
Signer

Actual PE Digest

09:8e:0f:80:21:46:da:7a:85:77:31:4f:58:5a:42:97:7d:01:df:4e:6d:fa:76:f7:d1:3b:1b:59:a9:e5:83:2f

Digest Algorithm

sha256

PE Digest Matches

true

Signature Validations

Trusted

false

Verification

Signing Certificate

CN=Microsoft Windows,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

07/02/2023, 20:40
Valid: false

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_GUARD_CF
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE

Imports

msvcrt

wcscmp
memcmp
memset
_onexit
__dllonexit
_unlock
_lock
?terminate@@YAXXZ
_commode
_cexit
_exit
exit
__CxxFrameHandler4
??3@YAXPEAX@Z
_purecall
??1exception@@UEAA@XZ
??0exception@@QEAA@XZ
??0exception@@QEAA@AEBV0@@Z
malloc
_callnewh
??0exception@@QEAA@AEBQEBD@Z
??0exception@@QEAA@AEBQEBDH@Z
?what@exception@@UEBAPEBDXZ
_CxxThrowException
__CxxFrameHandler3
memcpy
memmove
??1type_info@@UEAA@XZ
_fmode
__setusermatherr
_initterm
__set_app_type
__wgetmainargs
_amsg_exit
_XcptFilter
_wcsicmp
__C_specific_handler

iumcrypt

iumCryptMsgOpenToEncode
iumCryptMsgGetParam
iumCryptMsgUpdate
iumCryptEncodeObjectEx
iumCryptExportPublicKeyInfoFromBCryptKeyHandle
iumCryptSignAndEncodeCertificate

api-ms-win-core-heap-obsolete-l1-1-0

LocalReAlloc
LocalFree
LocalAlloc

api-ms-win-eventing-classicprovider-l1-1-0

GetTraceEnableLevel
GetTraceEnableFlags
GetTraceLoggerHandle
TraceMessage
UnregisterTraceGuids

api-ms-win-eventing-provider-l1-1-0

EventWriteTransfer
EventUnregister
EventRegister
EventSetInformation

api-ms-win-eventing-obsolete-l1-1-0

RegisterTraceGuidsA

api-ms-win-core-errorhandling-l1-1-0

SetLastError
SetUnhandledExceptionFilter
UnhandledExceptionFilter
GetLastError

api-ms-win-core-handle-l1-1-0

CloseHandle

api-ms-win-core-libraryloader-l1-2-0

GetModuleFileNameA
GetProcAddress
GetModuleHandleExW
GetModuleHandleExA
GetModuleHandleW

api-ms-win-core-processthreads-l1-1-0

GetCurrentThreadId
GetCurrentProcessId
SetThreadStackGuarantee
TerminateProcess
GetCurrentProcess
CreateThread

api-ms-win-core-profile-l1-1-0

QueryPerformanceCounter

api-ms-win-core-synch-l1-1-0

ReleaseSemaphore
WaitForSingleObject
DeleteCriticalSection
InitializeSRWLock
LeaveCriticalSection
EnterCriticalSection
AcquireSRWLockShared
CreateMutexExW
ReleaseSRWLockShared
OpenSemaphoreW
WaitForSingleObjectEx
AcquireSRWLockExclusive
ReleaseSRWLockExclusive
ReleaseMutex
InitializeCriticalSectionEx
CreateSemaphoreExW

api-ms-win-core-synch-l1-2-0

Sleep
InitOnceExecuteOnce

api-ms-win-core-sysinfo-l1-1-0

GetTickCount
GetSystemTimeAsFileTime
GetSystemTime
GetSystemInfo

api-ms-win-core-timezone-l1-1-0

SystemTimeToFileTime

kerbclientshared

KerbDHGetLegacyDHParameters
KerbDHGetLittleEndianPublicKey
KerbClientTransformStoredCred
KerbClientBuildKeyList
KerbClientBuildFastArmoredKdcRequest
KerbClientSharedInit
KerbPackKdcReplyWithEncryptedSessionKey
KerbClientPackAsn1Buffer
KerbClientDecryptApReply
KerbClientVerifyFastArmoredKerbError
KerbClientBuildEncryptedAuthData
KerbClientPackApReply
KerbClientBuildAsReqAuthenticator
KerbClientSharedCleanup
KerbClientAlloc
KerbClientVerifyFastArmoredTgsReply
KerbClientDecryptPacCredentials
KerbClientFreeStoredCred
KerbClientVerifyFastArmoredKdcReply
KerbClientVerifyEncryptedChallengePaData
KerbClientUnpackKdcReplyBody
KerbClientVerifyChecksum
KerbClientUpdateSharedConfiguration
KerbClientBuildTicketArmorKey
KerbClientFree
KerbClientUnpackAsn1BufferVoid
KerbGetFlagsForKdcReply
KerbClientBuildExplicitArmorKey
KerbClientComputeTgsChecksum
KerbDHCreateBCryptKey
KerbDHGetSharedSecretFromCapiKeyBuffer

ntlmshared

MsvpPutClearOwfsInPrimaryCredential
MsvpLm20GetNtlm3ChallengeResponse
MsvpMakeSecretPasswordNT5
MsvpDecryptDpapiMasterKey
MsvpCompareCredentials
MsvpDeriveSecureCredKey
NtlmSharedInit
MsvpValidateSupplementalCredsBuffer
MsvpCredentialToCachePasswords
MsvpGMSACred
MsvpPasswordValidate
MsvpUpdateSharedConfiguration

msasn1

ASN1BERDecGeneralizedTime
ASN1DEREncGeneralizedTime
ASN1BEREncU32
ASN1DecSetError
ASN1octetstring_free
ASN1BERDecSXVal
ASN1BERDecOpenType2
ASN1_CloseDecoder
ASN1intx_free
ASN1_CreateDecoder
ASN1intx_setuint32
ASN1_Decode
ASN1_CreateEncoder
ASN1_FreeEncoded
ASN1_FreeDecoded
ASN1_Encode
ASN1_CloseEncoder
ASN1BERDecPeekTag
ASN1BERDecOctetString
ASN1BERDecNotEndOfContents
ASN1BEREncExplicitTag
ASN1BERDecEndOfContents
ASN1BERDecBool
ASN1objectidentifier_free
ASN1EncSetError
ASN1BEREncS32
ASN1DEREncCharString
ASN1BEREncEndOfContents
ASN1BEREncBool
ASN1BERDecSkip
ASN1Free
ASN1DecAlloc
ASN1BEREncSX
ASN1BEREncOpenType
ASN1BERDecS32Val
ASN1DEREncOctetString
ASN1charstring_free
ASN1BERDecBitString
ASN1BERDecObjectIdentifier
ASN1BERDecZeroCharString
ASN1DEREncBitString
ASN1BERDecU32Val
ASN1_CreateModule
ASN1BERDecCharString
ASN1bitstring_free
ASN1ztcharstring_free
ASN1BERDecExplicitTag
ASN1BEREncObjectIdentifier

iumbase

GetSecureIdentitySigningKey
GetTaggedData
GetSignedReport
GetTaggedDataSize
EncryptData
IsSecureProcess
DecryptData

ntdll

RtlImageNtHeader
RtlLengthSid
RtlTimeToTimeFields
RtlTimeFieldsToTime
RtlFreeHeap
RtlAvlRemoveNode
_errno
RtlEqualUnicodeString
RtlAvlInsertNodeEx
RtlNtStatusToDosError
RtlLeaveCriticalSection
RtlInitializeCriticalSection
_vsnprintf_s
RtlEnterCriticalSection
memcpy_s
RtlDeleteCriticalSection
_vsnwprintf
RtlVirtualUnwind
RtlLookupFunctionEntry
RtlCaptureContext
NtSetEvent
NtCreateEvent
RtlSetProcessIsCritical
NtClose
RtlInitUnicodeString
NtOpenEvent
NtQuerySystemInformation
RtlAllocateHeap

rpcrt4

RpcServerUnregisterIf
NdrServerCallAll
NdrServerCall2
I_RpcMapWin32Status
RpcExceptionFilter
MesIncrementalHandleReset
MesDecodeIncrementalHandleCreate
MesEncodeIncrementalHandleCreate
RpcServerRegisterIf
RpcServerListen
RpcMgmtWaitServerListen
RpcServerUseProtseqEpW
NdrMesTypeAlignSize3
MesEncodeDynBufferHandleCreate
NdrMesTypeEncode3
MesHandleFree
MesDecodeBufferHandleCreate
NdrMesTypeDecode3

bcrypt

BCryptCreateHash
BCryptHash
BCryptHashData
BCryptDestroyHash
BCryptFinishHash
BCryptGenerateSymmetricKey
BCryptSecretAgreement
BCryptSetProperty
BCryptSignHash
BCryptDestroySecret
BCryptDeriveKey
BCryptImportKey
BCryptDecrypt
BCryptDuplicateKey
BCryptVerifySignature
BCryptDestroyKey
BCryptFinalizeKeyPair
BCryptGenerateKeyPair
BCryptOpenAlgorithmProvider
BCryptExportKey
BCryptCloseAlgorithmProvider
BCryptImportKeyPair
BCryptGenRandom
BCryptEncrypt
BCryptKeyDerivation
BCryptGetProperty

cryptdll

CDLocateCheckSum
CDLocateCSystem
CDGenerateRandomBits

cryptsp

SystemFunction007
SystemFunction009
SystemFunction011

api-ms-win-core-string-obsolete-l1-1-0

lstrlenA

api-ms-win-core-debug-l1-1-0

OutputDebugStringA
IsDebuggerPresent
DebugBreak
OutputDebugStringW

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

HeapFree
HeapAlloc
GetProcessHeap

api-ms-win-core-localization-l1-2-0

FormatMessageW

api-ms-win-core-memory-l1-1-0

VirtualAlloc
VirtualQuery
VirtualProtect

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

WideCharToMultiByte

api-ms-win-core-threadpool-l1-2-0

WaitForThreadpoolTimerCallbacks
CloseThreadpoolTimer
SetThreadpoolTimer
CreateThreadpoolTimer

Exports

Exports

__ImagePolicyMetadata

Sections

.text
Size: 220KB - Virtual size: 217KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 88KB - Virtual size: 85KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 4KB - Virtual size: 5KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.pdata
Size: 12KB - Virtual size: 9KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.tPolicy
Size: 4KB - Virtual size: 1KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.rsrc
Size: 4KB - Virtual size: 1KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 4KB - Virtual size: 3KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

af154b6fdad014759cdc0b2f60a5e24c

Code Sign

33:00:00:03:7f:c0:e0:39:ce:f3:f0:06:bb:00:00:00:00:03:7fCertificate

Extended Key Usages

61:07:76:56:00:00:00:00:00:08Certificate

Key Usages

09:8e:0f:80:21:46:da:7a:85:77:31:4f:58:5a:42:97:7d:01:df:4e:6d:fa:76:f7:d1:3b:1b:59:a9:e5:83:2fSigner

Signature Validations

Verification

07/02/2023, 20:40 Valid: false

Headers

DLL Characteristics

File Characteristics

Imports

msvcrt

iumcrypt

api-ms-win-core-heap-obsolete-l1-1-0

api-ms-win-eventing-classicprovider-l1-1-0

api-ms-win-eventing-provider-l1-1-0

api-ms-win-eventing-obsolete-l1-1-0

api-ms-win-core-errorhandling-l1-1-0

api-ms-win-core-handle-l1-1-0

api-ms-win-core-libraryloader-l1-2-0

api-ms-win-core-processthreads-l1-1-0

api-ms-win-core-profile-l1-1-0

api-ms-win-core-synch-l1-1-0

api-ms-win-core-synch-l1-2-0

api-ms-win-core-sysinfo-l1-1-0

api-ms-win-core-timezone-l1-1-0

kerbclientshared

ntlmshared

msasn1

iumbase

ntdll

rpcrt4

bcrypt

cryptdll

cryptsp

api-ms-win-core-string-obsolete-l1-1-0

api-ms-win-core-debug-l1-1-0

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

api-ms-win-core-localization-l1-2-0

api-ms-win-core-memory-l1-1-0

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

api-ms-win-core-threadpool-l1-2-0

Exports

Exports

Sections

.text Size: 220KB - Virtual size: 217KB

.rdata Size: 88KB - Virtual size: 85KB

.data Size: 4KB - Virtual size: 5KB

.pdata Size: 12KB - Virtual size: 9KB

.tPolicy Size: 4KB - Virtual size: 1KB

.rsrc Size: 4KB - Virtual size: 1KB

.reloc Size: 4KB - Virtual size: 3KB

33:00:00:03:7f:c0:e0:39:ce:f3:f0:06:bb:00:00:00:00:03:7f
Certificate

61:07:76:56:00:00:00:00:00:08
Certificate

09:8e:0f:80:21:46:da:7a:85:77:31:4f:58:5a:42:97:7d:01:df:4e:6d:fa:76:f7:d1:3b:1b:59:a9:e5:83:2f
Signer

07/02/2023, 20:40
Valid: false

.text
Size: 220KB - Virtual size: 217KB

.rdata
Size: 88KB - Virtual size: 85KB

.data
Size: 4KB - Virtual size: 5KB

.pdata
Size: 12KB - Virtual size: 9KB

.tPolicy
Size: 4KB - Virtual size: 1KB

.rsrc
Size: 4KB - Virtual size: 1KB

.reloc
Size: 4KB - Virtual size: 3KB