2026-09-30_6d09d7f6e913fb1c18201f8a775b9ad0_cobalt-strike_elex_mespinoza

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General

Target
2026-09-30_6d09d7f6e913fb1c18201f8a775b9ad0_cobalt-strike_elex_mespinoza
Size 891KB
Sample261001-pvnezavbme
SHA256 89dd2fcab2fe7a1957d79202fac6b134dea9fb24ce7aa6301fdaea75c6718314
MD5 6d09d7f6e913fb1c18201f8a775b9ad0
SHA1 611b64b50de35f3615839d46f93174da7c1dbd3c
SHA512 178262a5f6d910d24bdb33a1e133758794a0fb7f29657c8da8d08e5b2e88eef74ec435390bba53a65712bd1b4a7800bab75a57de730a0e7cb1d00945631db83d
SSDEEP 24576:/M0neCBd4q6zq2/ZmEhBwpemIwpeebwXZZvd0q:lf6zqUmnpeapeebSl0
TLSH
T1BD159D10A61331BCC41B2DB334BDA6769867DE5223065BD39FF67C4D1AA82D21735A0F
MD5 SHA1 SHA512 SSDEEP TLSH

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
2026-09-30_6d09d7f6e913fb1c18201f8a775b9ad0_cobalt-strike_elex_mespinoza

File Explorer

2026-09-30_6d09d7f6e913fb1c18201f8a775b9ad0_cobalt-strike_elex_mespinoza

.exe 891KB

2026-09-30_6d09d7f6e913fb1c18201f8a775b9ad0_cobalt-strike_elex_mespinoza

IMPHASH 96a04b689eac55d2ce88e469ce9d0b0e
SHA256 89dd2fcab2fe7a1957d79202fac6b134dea9fb24ce7aa6301fdaea75c6718314
MD5 6d09d7f6e913fb1c18201f8a775b9ad0
SHA1 611b64b50de35f3615839d46f93174da7c1dbd3c
SHA512 178262a5f6d910d24bdb33a1e133758794a0fb7f29657c8da8d08e5b2e88eef74ec435390bba53a65712bd1b4a7800bab75a57de730a0e7cb1d00945631db83d
SSDEEP 24576:/M0neCBd4q6zq2/ZmEhBwpemIwpeebwXZZvd0q:lf6zqUmnpeapeebSl0
TLSH
T1BD159D10A61331BCC41B2DB334BDA6769867DE5223065BD39FF67C4D1AA82D21735A0F
MD5 SHA1 SHA512 SSDEEP TLSH

Unsigned PE

Checks for missing Authenticode signature.

Minor OS version

Major OS version

Entry point

248640

Magic Number

267

Subsystem

IMAGE_SUBSYSTEM_WINDOWS_GUI

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE IMAGE_DLLCHARACTERISTICS_NX_COMPAT IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE IMAGE_FILE_LARGE_ADDRESS_AWARE IMAGE_FILE_32BIT_MACHINE

PDB paths

/builds/worker/workspace/obj-build/browser/app/firefox.pdb

mozglue

??2@YAPAXI@Z ??3@YAXPAX@Z ??3@YAXPAXI@Z ??_U@YAPAXI@Z ??_V@YAXPAX@Z ?BeginProcessRuntimeInit@detail@mscom@mozilla@@YAAA_NXZ ?DllBlocklist_Initialize@@YAXI@Z ?DllBlocklist_SetBasicDllServices@@YAXPAVDllServicesBase@detail@glue@mozilla@@@Z ?DllBlocklist_SetFullDllServices@@YAXPAVDllServicesBase@detail@glue@mozilla@@@Z ?EndProcessRuntimeInit@detail@mscom@mozilla@@YAXXZ ?GetProfilingStack@AutoProfilerLabel@baseprofiler@mozilla@@SAPAVProfilingStack@23@XZ ?IsWin32kLockedDown@mozilla@@YA_NXZ ?MapRemoteViewOfFile@mozilla@@YAPAXPAX0_K0KKK@Z ?Now@TimeStamp@mozilla@@CA?AV12@_N@Z ?ensureCapacitySlow@ProfilingStack@baseprofiler@mozilla@@AAEXXZ ?gTwoCharEscapes@detail@mozilla@@3QBDB ?profiler_init@baseprofiler@mozilla@@YAXPAX@Z ?profiler_shutdown@baseprofiler@mozilla@@YAXXZ _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

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

msvcp140

??0?$basic_streambuf@DU?$char_traits@D@std@@@std@@IAE@XZ ??0ios_base@std@@IAE@XZ ??1?$basic_streambuf@DU?$char_traits@D@std@@@std@@UAE@XZ ??1ios_base@std@@UAE@XZ ??6?$basic_ostream@DU?$char_traits@D@std@@@std@@QAEAAV01@G@Z ??6?$basic_ostream@DU?$char_traits@D@std@@@std@@QAEAAV01@H@Z ??6?$basic_ostream@DU?$char_traits@D@std@@@std@@QAEAAV01@I@Z ??6?$basic_ostream@DU?$char_traits@D@std@@@std@@QAEAAV01@K@Z ??6?$basic_ostream@DU?$char_traits@D@std@@@std@@QAEAAV01@PBX@Z ??6?$basic_ostream@DU?$char_traits@D@std@@@std@@QAEAAV01@_J@Z ?_Lock@?$basic_streambuf@DU?$char_traits@D@std@@@std@@UAEXXZ ?_Osfx@?$basic_ostream@DU?$char_traits@D@std@@@std@@QAEXXZ ?_Unlock@?$basic_streambuf@DU?$char_traits@D@std@@@std@@UAEXXZ ?_Xlength_error@std@@YAXPBD@Z ?_Xout_of_range@std@@YAXPBD@Z ?clear@?$basic_ios@DU?$char_traits@D@std@@@std@@QAEXH_N@Z ?fail@ios_base@std@@QBE_NXZ ?flush@?$basic_ostream@DU?$char_traits@D@std@@@std@@QAEAAV12@XZ ?good@ios_base@std@@QBE_NXZ ?imbue@?$basic_streambuf@DU?$char_traits@D@std@@@std@@MAEXABVlocale@2@@Z ?init@?$basic_ios@DU?$char_traits@D@std@@@std@@IAEXPAV?$basic_streambuf@DU?$char_traits@D@std@@@2@_N@Z ?setbuf@?$basic_streambuf@DU?$char_traits@D@std@@@std@@MAEPAV12@PAD_J@Z ?showmanyc@?$basic_streambuf@DU?$char_traits@D@std@@@std@@MAE_JXZ ?sputc@?$basic_streambuf@DU?$char_traits@D@std@@@std@@QAEHD@Z ?sync@?$basic_streambuf@DU?$char_traits@D@std@@@std@@MAEHXZ ?uflow@?$basic_streambuf@DU?$char_traits@D@std@@@std@@MAEHXZ ?xsgetn@?$basic_streambuf@DU?$char_traits@D@std@@@std@@MAE_JPAD_J@Z ?xsputn@?$basic_streambuf@DU?$char_traits@D@std@@@std@@MAE_JPBD_J@Z

kernel32

AcquireSRWLockExclusive AssignProcessToJobObject AttachConsole CloseHandle CreateEventW 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 GetCurrentThread GetCurrentThreadId GetEnvironmentStringsW GetEnvironmentVariableW GetExitCodeProcess GetFileAttributesW GetFileInformationByHandle GetFileInformationByHandleEx GetFileType GetLastError GetLongPathNameW GetModuleFileNameW GetModuleHandleA GetModuleHandleExW GetModuleHandleW GetNativeSystemInfo GetProcAddress GetProcessHandleCount GetProcessHeaps GetProcessId GetQueuedCompletionStatus GetStdHandle GetSystemInfo GetSystemTimeAsFileTime GetThreadId GetTickCount GetUserDefaultLCID GetUserDefaultLangID GetUserDefaultLocaleName GetVersionExW GetVolumePathNameW GlobalMemoryStatusEx HeapDestroy HeapSetInformation InitOnceExecuteOnce InitializeCriticalSection InitializeCriticalSectionAndSpinCount InitializeCriticalSectionEx InitializeProcThreadAttributeList InitializeSListHead IsDebuggerPresent IsProcessorFeaturePresent 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 SetUnhandledExceptionFilter SignalObjectAndWait Sleep TerminateJobObject TerminateProcess TlsAlloc TlsFree TlsGetValue TlsSetValue UnhandledExceptionFilter UnmapViewOfFile UnregisterWaitEx UpdateProcThreadAttribute VerifyVersionInfoA VirtualAlloc VirtualAllocEx VirtualFree VirtualFreeEx VirtualProtect VirtualProtectEx VirtualQuery VirtualQueryEx WaitForSingleObject WaitForSingleObjectEx WideCharToMultiByte WriteFile WriteProcessMemory lstrlenW

vcruntime140

_CxxThrowException __CxxFrameHandler3 _except_handler3 _except_handler4_common _purecall strrchr wcschr

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

__p___argc __p___wargv _beginthreadex _c_exit _cexit _configure_wide_argv _controlfp_s _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-stdio-l1-1-0

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

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

__setusermatherr _fdopen

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

_configthreadlocale

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

__p__environ _putenv _wgetenv getenv

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

rand_s

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

_set_new_mode

GetHandleVerifier GetNtLoaderAPI IsSandboxedProcess NativeNtBlockSet_Write _TargetConfigureOPMProtectedOutput@20 _TargetCreateNamedPipeW@36 _TargetCreateOPMProtectedOutputs@24 _TargetCreateProcessA@44 _TargetCreateProcessW@44 _TargetCreateThread@28 _TargetDestroyOPMProtectedOutput@8 _TargetEnumDisplayDevicesA@20 _TargetEnumDisplayMonitors@20 _TargetGdiDllInitialize@12 _TargetGetCertificate@20 _TargetGetCertificateByHandle@20 _TargetGetCertificateSize@16 _TargetGetCertificateSizeByHandle@16 _TargetGetMonitorInfoA@12 _TargetGetMonitorInfoW@12 _TargetGetOPMInformation@16 _TargetGetOPMRandomNumber@12 _TargetGetStockObject@8 _TargetGetSuggestedOPMProtectedOutputArraySize@12 _TargetNtCreateEvent@24 _TargetNtCreateFile@48 _TargetNtCreateKey@32 _TargetNtMapViewOfSection@44 _TargetNtOpenEvent@16 _TargetNtOpenFile@28 _TargetNtOpenKey@16 _TargetNtOpenKeyEx@20 _TargetNtOpenProcess@20 _TargetNtOpenProcessToken@16 _TargetNtOpenProcessTokenEx@20 _TargetNtOpenThread@20 _TargetNtOpenThreadToken@20 _TargetNtOpenThreadTokenEx@24 _TargetNtQueryAttributesFile@12 _TargetNtQueryFullAttributesFile@12 _TargetNtSetInformationFile@24 _TargetNtSetInformationThread@20 _TargetNtUnmapViewOfSection@12 _TargetRegisterClassW@8 _TargetSetOPMSigningKeyAndSequenceNumbers@12 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

242KB

Virtual Size

241KB

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ

Name

.rdata

Size

37KB

Virtual Size

36KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.data

Size

512B

Virtual Size

5KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.00cfg

Size

512B

Virtual Size

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.freestd

Size

512B

Virtual Size

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.tls

Size

512B

Virtual Size

13B

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

408KB

Virtual Size

604KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_DISCARDABLE IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

File Explorer

2026-09-30_6d09d7f6e913fb1c18201f8a775b9ad0_cobalt-strike_elex_mespinoza

mozglue

advapi32

ntdll

msvcp140

kernel32

vcruntime140

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

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

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

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

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

generic