2026-08-02_b8cddfa61fe6cf24cb10371e05a3a8c4_mespinoza

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General

Target
2026-08-02_b8cddfa61fe6cf24cb10371e05a3a8c4_mespinoza
Size 1.1MB
Sample260802-q4mepsah63
SHA256 9d40175deb537ee94c51bc2e826e03f52f73f0b9963be3068488ca9b4a1578cb
MD5 b8cddfa61fe6cf24cb10371e05a3a8c4
SHA1 522123aa5a741c87984971bfb475fc7eb2802a30
SHA512 3446f105043f4487573a6cd82dfb24530106fe983b966f9e73f14506147bcda1d3274283d1b6b200de4ba13accb010e28331ac2c424422c5cf43d5741765cd78
SSDEEP 24576:Pd9+ZgRf6XUjIwpemIwpeJgsqjnhMgeiCl7G0nehbGZpbD:fmgRf6XUDpeapeGDmg27RnWGj
TLSH
T17145DF13F74522EDD09AC5F89B56C233E5727C88072065CF1B693A563E66AE42B3DB0C
MD5 SHA1 SHA512 SSDEEP TLSH

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
2026-08-02_b8cddfa61fe6cf24cb10371e05a3a8c4_mespinoza

File Explorer

2026-08-02_b8cddfa61fe6cf24cb10371e05a3a8c4_mespinoza

.exe 1.1MB

2026-08-02_b8cddfa61fe6cf24cb10371e05a3a8c4_mespinoza

IMPHASH aece7b7e776840d7a7255a31b309b7e4
SHA256 9d40175deb537ee94c51bc2e826e03f52f73f0b9963be3068488ca9b4a1578cb
MD5 b8cddfa61fe6cf24cb10371e05a3a8c4
SHA1 522123aa5a741c87984971bfb475fc7eb2802a30
SHA512 3446f105043f4487573a6cd82dfb24530106fe983b966f9e73f14506147bcda1d3274283d1b6b200de4ba13accb010e28331ac2c424422c5cf43d5741765cd78
SSDEEP 24576:Pd9+ZgRf6XUjIwpemIwpeJgsqjnhMgeiCl7G0nehbGZpbD:fmgRf6XUDpeapeGDmg27RnWGj
TLSH
T17145DF13F74522EDD09AC5F89B56C233E5727C88072065CF1B693A563E66AE42B3DB0C
MD5 SHA1 SHA512 SSDEEP TLSH

Unsigned PE

Checks for missing Authenticode signature.

Minor OS version

Major OS version

Entry point

114832

Magic Number

523

Subsystem

IMAGE_SUBSYSTEM_WINDOWS_GUI

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA IMAGE_DLLCHARACTERISTICS_NX_COMPAT IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE IMAGE_FILE_LARGE_ADDRESS_AWARE

PDB paths

firefox.pdb

mozglue

??$AddMarker@UTextMarker@markers@baseprofiler@mozilla@@V?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@baseprofiler@mozilla@@YA?AVProfileBufferBlockIndex@1@AEBV?$ProfilerStringView@D@1@AEBVMarkerCategory@1@$$QEAVMarkerOptions@1@UTextMarker@markers@01@AEBV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@Z ??0PrintfTarget@mozilla@@IEAA@XZ ??1MutexImpl@detail@mozilla@@QEAA@XZ ??2@YAPEAX_K@Z ??3@YAXPEAX@Z ??3@YAXPEAX_K@Z ??GTimeStampValue@mozilla@@QEBA_KAEBV01@@Z ??_U@YAPEAX_K@Z ??_V@YAXPEAX@Z ?BeginProcessRuntimeInit@detail@mscom@mozilla@@YAAEAW4ProcessInitState@123@XZ ?CleanupProcessRuntime@mozilla@@YAXXZ ?CreateAndStorePreXULSkeletonUI@mozilla@@YAXPEAUHINSTANCE__@@HPEAPEAD@Z ?DllBlocklist_Initialize@@YAXI@Z ?DllBlocklist_SetBasicDllServices@@YAXPEAVDllServicesBase@detail@glue@mozilla@@@Z ?DllBlocklist_SetFullDllServices@@YAXPEAVDllServicesBase@detail@glue@mozilla@@@Z ?EndProcessRuntimeInit@detail@mscom@mozilla@@YAXXZ ?GetProfilingStack@AutoProfilerLabel@baseprofiler@mozilla@@SAPEAVProfilingStack@23@XZ ?IsWin32kLockedDown@mozilla@@YA_NXZ ?MapRemoteViewOfFile@mozilla@@YAPEAXPEAX0_K01KK@Z ?Now@TimeStamp@mozilla@@CA?AV12@_N@Z ?PollPreXULSkeletonUIEvents@mozilla@@YAXXZ ?WindowsDpiInitialization@mozilla@@YA?AW4WindowsDpiInitializationResult@1@XZ ?ensureCapacitySlow@ProfilingStack@baseprofiler@mozilla@@AEAAXXZ ?gTwoCharEscapes@detail@mozilla@@3QBDB ?lock@MutexImpl@detail@mozilla@@IEAAXXZ ?profiler_current_thread_id@baseprofiler@mozilla@@YA?AVBaseProfilerThreadId@12@XZ ?profiler_init@baseprofiler@mozilla@@YAXPEAX@Z ?profiler_shutdown@baseprofiler@mozilla@@YAXXZ ?unlock@MutexImpl@detail@mozilla@@IEAAXXZ ?vprint@PrintfTarget@mozilla@@QEAA_NPEBDPEAD@Z _wcsdup free malloc moz_xmalloc mozalloc_abort realloc strdup

advapi32

AccessCheck CheckTokenMembership ConvertSidToStringSidW ConvertStringSecurityDescriptorToSecurityDescriptorW ConvertStringSidToSidW CopySid CreateProcessAsUserW CreateRestrictedToken CreateWellKnownSid DeregisterEventSource DuplicateToken DuplicateTokenEx EqualSid FreeSid GetAce GetKernelObjectSecurity GetLengthSid GetNamedSecurityInfoW GetSecurityDescriptorSacl GetSecurityInfo GetSidSubAuthority GetSidSubAuthorityCount GetTokenInformation ImpersonateLoggedOnUser InitializeSecurityDescriptor InitializeSid IsValidSid LookupPrivilegeValueW MapGenericMask OpenProcessToken RegCloseKey RegCreateKeyExW RegDeleteValueW RegDisablePredefinedCache RegGetValueW RegOpenKeyExW RegQueryValueExW RegSetValueExW RegisterEventSourceW ReportEventW RevertToSelf SetEntriesInAclW SetKernelObjectSecurity SetSecurityDescriptorDacl SetSecurityDescriptorGroup SetSecurityDescriptorOwner SetSecurityInfo SetThreadToken SetTokenInformation SystemFunction036

ntdll

NtMapViewOfSection NtOpenFile NtQueryInformationProcess NtQueryVirtualMemory NtReadVirtualMemory NtUnmapViewOfSection RtlAcquireSRWLockExclusive RtlAcquireSRWLockShared RtlAllocateHeap RtlCaptureContext RtlCaptureStackBackTrace RtlCompareMemory RtlCompareUnicodeString RtlDuplicateUnicodeString RtlEqualUnicodeString RtlFreeHeap RtlFreeUnicodeString RtlGetLastWin32Error RtlGetVersion RtlInitUnicodeString RtlLookupFunctionEntry RtlNtStatusToDosError RtlQueryPerformanceCounter RtlReAllocateHeap RtlReleaseSRWLockExclusive RtlReleaseSRWLockShared RtlRunOnceExecuteOnce RtlRunOnceInitialize RtlSetLastWin32Error RtlVirtualUnwind VerSetConditionMask memcmp memcpy memmove memset

msvcp140

??0?$basic_streambuf@DU?$char_traits@D@std@@@std@@IEAA@XZ ??0ios_base@std@@IEAA@XZ ??1?$basic_streambuf@DU?$char_traits@D@std@@@std@@UEAA@XZ ??1ios_base@std@@UEAA@XZ ??6?$basic_ostream@DU?$char_traits@D@std@@@std@@QEAAAEAV01@G@Z ??6?$basic_ostream@DU?$char_traits@D@std@@@std@@QEAAAEAV01@H@Z ??6?$basic_ostream@DU?$char_traits@D@std@@@std@@QEAAAEAV01@K@Z ??6?$basic_ostream@DU?$char_traits@D@std@@@std@@QEAAAEAV01@PEBX@Z ??6?$basic_ostream@DU?$char_traits@D@std@@@std@@QEAAAEAV01@_J@Z ??6?$basic_ostream@DU?$char_traits@D@std@@@std@@QEAAAEAV01@_K@Z ?_Lock@?$basic_streambuf@DU?$char_traits@D@std@@@std@@UEAAXXZ ?_Osfx@?$basic_ostream@DU?$char_traits@D@std@@@std@@QEAAXXZ ?_Unlock@?$basic_streambuf@DU?$char_traits@D@std@@@std@@UEAAXXZ ?_Xlength_error@std@@YAXPEBD@Z ?_Xout_of_range@std@@YAXPEBD@Z ?clear@?$basic_ios@DU?$char_traits@D@std@@@std@@QEAAXH_N@Z ?fail@ios_base@std@@QEBA_NXZ ?flush@?$basic_ostream@DU?$char_traits@D@std@@@std@@QEAAAEAV12@XZ ?good@ios_base@std@@QEBA_NXZ ?imbue@?$basic_streambuf@DU?$char_traits@D@std@@@std@@MEAAXAEBVlocale@2@@Z ?init@?$basic_ios@DU?$char_traits@D@std@@@std@@IEAAXPEAV?$basic_streambuf@DU?$char_traits@D@std@@@2@_N@Z ?setbuf@?$basic_streambuf@DU?$char_traits@D@std@@@std@@MEAAPEAV12@PEAD_J@Z ?showmanyc@?$basic_streambuf@DU?$char_traits@D@std@@@std@@MEAA_JXZ ?sputc@?$basic_streambuf@DU?$char_traits@D@std@@@std@@QEAAHD@Z ?sync@?$basic_streambuf@DU?$char_traits@D@std@@@std@@MEAAHXZ ?uflow@?$basic_streambuf@DU?$char_traits@D@std@@@std@@MEAAHXZ ?xsgetn@?$basic_streambuf@DU?$char_traits@D@std@@@std@@MEAA_JPEAD_J@Z ?xsputn@?$basic_streambuf@DU?$char_traits@D@std@@@std@@MEAA_JPEBD_J@Z

kernel32

AcquireSRWLockExclusive AssignProcessToJobObject AttachConsole CloseHandle CreateEventW CreateFileA CreateFileMappingA CreateFileMappingW CreateFileW CreateIoCompletionPort CreateJobObjectW CreateMutexW CreateNamedPipeW CreateProcessW CreateRemoteThread CreateThread CreateToolhelp32Snapshot DebugBreak DeleteCriticalSection DeleteFileW DeleteProcThreadAttributeList DuplicateHandle EncodePointer EnterCriticalSection EnumSystemLocalesEx ExpandEnvironmentStringsW FlushInstructionCache FreeEnvironmentStringsW FreeLibrary GetCurrentDirectoryW GetCurrentProcess GetCurrentProcessId GetCurrentProcessorNumber GetCurrentThread GetCurrentThreadId GetEnvironmentStringsW GetEnvironmentVariableW GetExitCodeProcess GetFileAttributesW GetFileInformationByHandle GetFileInformationByHandleEx GetFileType GetLastError GetLongPathNameW GetModuleFileNameW GetModuleHandleA GetModuleHandleExW GetModuleHandleW GetNativeSystemInfo GetProcAddress GetProcessHandleCount GetProcessHeaps GetProcessId GetProductInfo GetQueuedCompletionStatus GetStartupInfoW GetStdHandle GetSystemInfo GetSystemTimeAsFileTime GetThreadId GetTickCount GetUserDefaultLCID GetUserDefaultLangID GetUserDefaultLocaleName GetVersionExW GetVolumePathNameW GlobalMemoryStatusEx HeapDestroy HeapSetInformation InitOnceExecuteOnce InitializeCriticalSection InitializeCriticalSectionAndSpinCount InitializeCriticalSectionEx InitializeProcThreadAttributeList InitializeSListHead IsDebuggerPresent IsProcessorFeaturePresent IsWow64Process LeaveCriticalSection LoadLibraryExA LoadLibraryExW LoadLibraryW LocalFree MapViewOfFile Module32FirstW Module32NextW MultiByteToWideChar OpenProcess OutputDebugStringA PostQueuedCompletionStatus ProcessIdToSessionId QueryFullProcessImageNameW QueryPerformanceCounter QueryPerformanceFrequency RaiseException ReadFile ReadProcessMemory RegisterWaitForSingleObject ReleaseSRWLockExclusive ResetEvent ResumeThread SearchPathW SetDllDirectoryW SetEnvironmentVariableW SetEvent SetFilePointerEx SetHandleInformation SetInformationJobObject SetLastError SetStdHandle SetThreadAffinityMask SetUnhandledExceptionFilter SignalObjectAndWait Sleep TerminateJobObject TerminateProcess TlsAlloc TlsFree TlsGetValue TlsSetValue UnhandledExceptionFilter UnmapViewOfFile UnregisterWait UnregisterWaitEx UpdateProcThreadAttribute VerifyVersionInfoW VirtualAlloc VirtualAllocEx VirtualFree VirtualFreeEx VirtualProtect VirtualProtectEx VirtualQuery WaitForSingleObject WaitForSingleObjectEx WideCharToMultiByte WriteFile WriteProcessMemory lstrlenW

vcruntime140

_CxxThrowException __C_specific_handler __CxxFrameHandler3 __std_terminate _purecall strrchr wcschr

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

__acrt_iob_func __p__commode __stdio_common_vfprintf __stdio_common_vsnprintf_s __stdio_common_vsnwprintf_s __stdio_common_vswprintf _dup _fileno _get_osfhandle _set_fmode _wfopen _wtmpnam_s fclose fgets freopen

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

__p__environ _putenv _wgetenv getenv

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

__p___argc __p___wargv _beginthreadex _c_exit _cexit _configure_wide_argv _crt_atexit _errno _exit _get_initial_wide_environment _initialize_onexit_table _initialize_wide_environment _initterm _initterm_e _invalid_parameter_noinfo_noreturn _register_onexit_function _register_thread_local_exe_atexit_callback _seh_filter_exe _set_app_type exit terminate

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

__setusermatherr _fdopen

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

_gmtime64_s _time64 strftime

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

_ltoa wcstoul

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

_stricmp _wcsicmp _wcslwr_s _wcsnicmp strcpy strlen tolower towlower towupper wcscat_s wcscmp wcscpy wcscpy_s wcslen wcsncmp wcspbrk wcstok_s

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

_wmakepath_s _wsplitpath_s

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

_byteswap_uint64 rand_s

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

_configthreadlocale

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

_set_new_mode

GetDependentModulePaths GetHandleVerifier GetNtLoaderAPI IsSandboxedProcess NativeNtBlockSet_Write TargetConfigureOPMProtectedOutput TargetConfigureOPMProtectedOutput64 TargetCreateNamedPipeW TargetCreateNamedPipeW64 TargetCreateOPMProtectedOutputs TargetCreateOPMProtectedOutputs64 TargetCreateProcessA TargetCreateProcessA64 TargetCreateProcessW TargetCreateProcessW64 TargetCreateThread TargetCreateThread64 TargetDestroyOPMProtectedOutput TargetDestroyOPMProtectedOutput64 TargetEnumDisplayDevicesA TargetEnumDisplayDevicesA64 TargetEnumDisplayMonitors TargetEnumDisplayMonitors64 TargetGdiDllInitialize TargetGdiDllInitialize64 TargetGetCertificate TargetGetCertificate64 TargetGetCertificateByHandle TargetGetCertificateByHandle64 TargetGetCertificateSize TargetGetCertificateSize64 TargetGetCertificateSizeByHandle TargetGetCertificateSizeByHandle64 TargetGetMonitorInfoA TargetGetMonitorInfoA64 TargetGetMonitorInfoW TargetGetMonitorInfoW64 TargetGetOPMInformation TargetGetOPMInformation64 TargetGetOPMRandomNumber TargetGetOPMRandomNumber64 TargetGetStockObject TargetGetStockObject64 TargetGetSuggestedOPMProtectedOutputArraySize TargetGetSuggestedOPMProtectedOutputArraySize64 TargetNtCreateEvent TargetNtCreateEvent64 TargetNtCreateFile TargetNtCreateFile64 TargetNtCreateKey TargetNtCreateKey64 TargetNtCreateSection TargetNtCreateSection64 TargetNtMapViewOfSection TargetNtMapViewOfSection64 TargetNtOpenEvent TargetNtOpenEvent64 TargetNtOpenFile TargetNtOpenFile64 TargetNtOpenKey TargetNtOpenKey64 TargetNtOpenKeyEx TargetNtOpenKeyEx64 TargetNtOpenProcess TargetNtOpenProcess64 TargetNtOpenProcessToken TargetNtOpenProcessToken64 TargetNtOpenProcessTokenEx TargetNtOpenProcessTokenEx64 TargetNtOpenThread TargetNtOpenThread64 TargetNtOpenThreadToken TargetNtOpenThreadToken64 TargetNtOpenThreadTokenEx TargetNtOpenThreadTokenEx64 TargetNtQueryAttributesFile TargetNtQueryAttributesFile64 TargetNtQueryFullAttributesFile TargetNtQueryFullAttributesFile64 TargetNtSetInformationFile TargetNtSetInformationFile64 TargetNtSetInformationThread TargetNtSetInformationThread64 TargetNtUnmapViewOfSection TargetNtUnmapViewOfSection64 TargetRegisterClassW TargetRegisterClassW64 TargetSetOPMSigningKeyAndSequenceNumbers TargetSetOPMSigningKeyAndSequenceNumbers64 g_handles_to_close g_interceptions g_nt g_originals g_shared_IPC_size g_shared_delayed_integrity_level g_shared_delayed_mitigations g_shared_policy_size g_shared_section

Name

.text

Size

306KB

Virtual Size

305KB

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ

Name

.rdata

Size

53KB

Virtual Size

52KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.data

Size

512B

Virtual Size

10KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.pdata

Size

12KB

Virtual Size

11KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.00cfg

Size

512B

Virtual Size

16B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.freestd

Size

512B

Virtual Size

16B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.tls

Size

512B

Virtual Size

17B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.rsrc

Size

201KB

Virtual Size

201KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.reloc

Size

568KB

Virtual Size

572KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_DISCARDABLE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Sharing

General

Malware Config

Signatures

File Explorer

2026-08-02_b8cddfa61fe6cf24cb10371e05a3a8c4_mespinoza

mozglue

advapi32

ntdll

msvcp140

kernel32

vcruntime140

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

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

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

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

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

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

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

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

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

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

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

generic