2026-10-01_2f104db0e555d25dfe055b6c50f88dc5_cobalt-strike_mespinoza

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General

Target
2026-10-01_2f104db0e555d25dfe055b6c50f88dc5_cobalt-strike_mespinoza
Size 609KB
Sample261002-vxgyvsts3j
SHA256 d34ef18a8f581a826a47a48e0abb3ca8bc43f55a26a1074c1dd1e94f6b276fb5
MD5 2f104db0e555d25dfe055b6c50f88dc5
SHA1 96f8d3fe62efc9a3809ccd38a14a247bf407dacf
SHA512 b1aca6c3c050543f2e8778922aee424e93bd93e49f927360fda967a932df7a7e4722f34c0eabaf28a5ef420dd29cc7cf631c293b81ac3f37db7c7d703d34bfa9
SSDEEP 12288:83d80ogiyXqEqG0jAcViRw8SH7q9NzwHJem7OzwHJeAtset3r:83d1ohy6EqNi/SH7KBwpemIwpeAGe5r
TLSH
T1AED48C03E74222FDD49AC1F85A528133F5727C881725B9DF1BA57A223E65AD02B3E70D
MD5 SHA1 SHA512 SSDEEP TLSH

Score

5^/10

Malware Config

Signatures

Codesign digest Mismatch 1 IoCs

File was altered after it was signed.

resource
2026-10-01_2f104db0e555d25dfe055b6c50f88dc5_cobalt-strike_mespinoza

File Explorer

2026-10-01_2f104db0e555d25dfe055b6c50f88dc5_cobalt-strike_mespinoza

.exe 609KB

2026-10-01_2f104db0e555d25dfe055b6c50f88dc5_cobalt-strike_mespinoza

IMPHASH 896ee4d6c8b90a43da0606f0c1512d2c
SHA256 d34ef18a8f581a826a47a48e0abb3ca8bc43f55a26a1074c1dd1e94f6b276fb5
MD5 2f104db0e555d25dfe055b6c50f88dc5
SHA1 96f8d3fe62efc9a3809ccd38a14a247bf407dacf
SHA512 b1aca6c3c050543f2e8778922aee424e93bd93e49f927360fda967a932df7a7e4722f34c0eabaf28a5ef420dd29cc7cf631c293b81ac3f37db7c7d703d34bfa9
SSDEEP 12288:83d80ogiyXqEqG0jAcViRw8SH7q9NzwHJem7OzwHJeAtset3r:83d1ohy6EqNi/SH7KBwpemIwpeAGe5r
TLSH
T1AED48C03E74222FDD49AC1F85A528133F5727C881725B9DF1BA57A223E65AD02B3E70D
MD5 SHA1 SHA512 SSDEEP TLSH

Codesign digest Mismatch

File was altered after it was signed.

PE Signature issue

Digest

3d:c2:02:1c:93:24:66:74:e8:6e:83:28:1e:09:d6:be:bf:f5:7b:4c

Digest Algorithm

sha1

PE Digests Matches

Not matched

Trusted

Signing Certificate

CN=Mozilla Corporation,OU=Release Engineering,O=Mozilla Corporation,L=Mountain View,ST=California,C=US,1.2.840.113549.1.9.1=#0c2072656c656173652b636572746966696361746573406d6f7a696c6c612e636f6d

Chains

Feb 17, 2020

CN=Mozilla Corporation,OU=Release Engineering,O=Mozilla Corporation,L=Mountain View,ST=California,C=US,1.2.840.113549.1.9.1=#0c2072656c656173652b636572746966696361746573406d6f7a696c6c612e636f6d

CN=DigiCert SHA2 Assured ID Code Signing CA,OU=www.digicert.com,O=DigiCert Inc,C=US

CN=DigiCert Assured ID Root CA,OU=www.digicert.com,O=DigiCert Inc,C=US

Subject

CN=DigiCert Assured ID Root CA,OU=www.digicert.com,O=DigiCert Inc,C=US

Serial Number

0c:e7:e0:e5:17:d8:46:fe:8f:e5:60:fc:1b:f0:30:39

Issuer

CN=DigiCert Assured ID Root CA,OU=www.digicert.com,O=DigiCert Inc,C=US

Key Usages

KeyUsageDigitalSignature, KeyUsageCertSign, KeyUsageCRLSign

Revocation Status

Not revoked

Timespan

Nov 10, 2006 - Nov 10, 2031

Subject

CN=DigiCert SHA2 Assured ID Code Signing CA,OU=www.digicert.com,O=DigiCert Inc,C=US

Serial Number

04:09:18:1b:5f:d5:bb:66:75:53:43:b5:6f:95:50:08

Issuer

CN=DigiCert Assured ID Root CA,OU=www.digicert.com,O=DigiCert Inc,C=US

Key Usages

KeyUsageDigitalSignature, KeyUsageCertSign, KeyUsageCRLSign

Ext Key Usages

ExtKeyUsageCodeSigning

Revocation Status

Not revoked

Timespan

Oct 22, 2013 - Oct 22, 2028

Subject

CN=Mozilla Corporation,OU=Release Engineering,O=Mozilla Corporation,L=Mountain View,ST=California,C=US,1.2.840.113549.1.9.1=#0c2072656c656173652b636572746966696361746573406d6f7a696c6c612e636f6d

Serial Number

0b:1f:8c:d5:9e:64:74:6b:ea:e1:53:ec:ca:21:06:6b

Issuer

CN=DigiCert SHA2 Assured ID Code Signing CA,OU=www.digicert.com,O=DigiCert Inc,C=US

Key Usages

KeyUsageDigitalSignature

Ext Key Usages

ExtKeyUsageCodeSigning

Revocation Status

Not revoked

Timespan

May 31, 2019 - Jun 4, 2020

Subject

CN=DigiCert Assured ID CA-1,OU=www.digicert.com,O=DigiCert Inc,C=US

Serial Number

06:fd:f9:03:96:03:ad:ea:00:0a:eb:3f:27:bb:ba:1b

Issuer

CN=DigiCert Assured ID Root CA,OU=www.digicert.com,O=DigiCert Inc,C=US

Key Usages

KeyUsageDigitalSignature, KeyUsageCertSign, KeyUsageCRLSign

Ext Key Usages

ExtKeyUsageServerAuth, ExtKeyUsageClientAuth, ExtKeyUsageCodeSigning, ExtKeyUsageEmailProtection, ExtKeyUsageTimeStamping

Revocation Status

Not revoked

Timespan

Nov 10, 2006 - Nov 10, 2021

Subject

CN=DigiCert Timestamp Responder,O=DigiCert,C=US

Serial Number

03:01:9a:02:3a:ff:58:b1:6b:d6:d5:ea:e6:17:f0:66

Issuer

CN=DigiCert Assured ID CA-1,OU=www.digicert.com,O=DigiCert Inc,C=US

Key Usages

KeyUsageDigitalSignature

Ext Key Usages

ExtKeyUsageTimeStamping

Revocation Status

Not revoked

Timespan

Oct 22, 2014 - Oct 22, 2024

Minor OS version

Major OS version

Entry point

603848

Magic Number

523

Subsystem

IMAGE_SUBSYSTEM_WINDOWS_GUI

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_NX_COMPAT IMAGE_DLLCHARACTERISTICS_GUARD_CF IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE IMAGE_FILE_LARGE_ADDRESS_AWARE

PDB paths

mozglue

??2@YAPEAX_K@Z ??3@YAXPEAX@Z ??3@YAXPEAX_K@Z ??_U@YAPEAX_K@Z ??_V@YAXPEAX@Z ?BeginProcessRuntimeInit@detail@mscom@mozilla@@YAAEA_NXZ ?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 ?ensureCapacitySlow@ProfilingStack@baseprofiler@mozilla@@AEAAXXZ ?gTwoCharEscapes@detail@mozilla@@3QBDB ?profiler_init@baseprofiler@mozilla@@YAXPEAX@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 RtlCaptureContext RtlCaptureStackBackTrace RtlCompareMemory RtlCompareUnicodeString RtlDuplicateUnicodeString RtlEqualUnicodeString RtlFreeHeap RtlFreeUnicodeString RtlGetVersion RtlInitUnicodeString RtlLookupFunctionEntry RtlQueryPerformanceCounter RtlReAllocateHeap RtlReleaseSRWLockExclusive RtlReleaseSRWLockShared RtlRunOnceExecuteOnce 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 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 VerifyVersionInfoW VirtualAlloc VirtualAllocEx VirtualFree VirtualFreeEx VirtualProtect VirtualProtectEx VirtualQuery VirtualQueryEx 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_vsprintf __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

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-locale-l1-1-0

_configthreadlocale

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

_set_new_mode

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 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

287KB

Virtual Size

287KB

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ

Name

.rdata

Size

47KB

Virtual Size

46KB

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

11KB

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

58KB

Virtual Size

117KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Sharing

General

Malware Config

Signatures

File Explorer

2026-10-01_2f104db0e555d25dfe055b6c50f88dc5_cobalt-strike_mespinoza

PE Signature issue

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