2026-07-27_c575695cc116a179a641574e3313432a_cobalt-strike_mespinoza

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General

Target
2026-07-27_c575695cc116a179a641574e3313432a_cobalt-strike_mespinoza
Size 806KB
Sample260727-c7hzssvbpe
SHA256 0d77646c953b857f9466a288288f081afb90e46abcc534d7f107b6aa49439696
MD5 c575695cc116a179a641574e3313432a
SHA1 f2c04b096bbfb2386bc5fe9c2bbadfc40d1133ad
SHA512 acf449875d1f99f7d475ef19778a6a5cf3bcd77c2faf9c1472e289459b2c0280e8bd8f2682afcf52bab3a1e7ddae83bea0f183bc487c38ee828178d45ded8a81
SSDEEP 24576:ueHknehuo5NVoP1ovLW0Zna/0e0+KI+i9f4LpO4:uskC6tKJG0zFIxRCpO
TLSH
T1FA05DF43610924BAD98AD07D97479832E932BC494731F5CB47C4FB226EBA6E05F39F81
MD5 SHA1 SHA512 SSDEEP TLSH

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
2026-07-27_c575695cc116a179a641574e3313432a_cobalt-strike_mespinoza

File Explorer

2026-07-27_c575695cc116a179a641574e3313432a_cobalt-strike_mespinoza

.exe 806KB

2026-07-27_c575695cc116a179a641574e3313432a_cobalt-strike_mespinoza

IMPHASH e4d6dbae1edd697c282fe62627099390
SHA256 0d77646c953b857f9466a288288f081afb90e46abcc534d7f107b6aa49439696
MD5 c575695cc116a179a641574e3313432a
SHA1 f2c04b096bbfb2386bc5fe9c2bbadfc40d1133ad
SHA512 acf449875d1f99f7d475ef19778a6a5cf3bcd77c2faf9c1472e289459b2c0280e8bd8f2682afcf52bab3a1e7ddae83bea0f183bc487c38ee828178d45ded8a81
SSDEEP 24576:ueHknehuo5NVoP1ovLW0Zna/0e0+KI+i9f4LpO4:uskC6tKJG0zFIxRCpO
TLSH
T1FA05DF43610924BAD98AD07D97479832E932BC494731F5CB47C4FB226EBA6E05F39F81
MD5 SHA1 SHA512 SSDEEP TLSH

Unsigned PE

Checks for missing Authenticode signature.

Minor OS version

Major OS version

Entry point

177792

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

z:\task_1563383129\build\src\obj-firefox\toolkit\crashreporter\client\crashreporter.pdb

nss3

HASH_Begin HASH_Create HASH_Destroy HASH_End HASH_Update NSS_Initialize

kernel32

CloseHandle CompareFileTime CreateDirectoryW CreateEventW CreateProcessW CreateThread DeleteCriticalSection DeleteFileW EnterCriticalSection FindClose FindFirstFileW FindNextFileW FindResourceW FormatMessageW FreeLibrary GetCurrentProcess GetCurrentProcessId GetCurrentThreadId GetFileAttributesW GetLastError GetModuleFileNameW GetModuleHandleW GetProcAddress GetStartupInfoW GetSystemTime GetSystemTimeAsFileTime GlobalAlloc GlobalFree GlobalLock GlobalUnlock InitializeCriticalSectionAndSpinCount InitializeSListHead IsDebuggerPresent IsProcessorFeaturePresent LeaveCriticalSection LoadLibraryW LoadResource LocalFree LockResource MoveFileW MultiByteToWideChar QueryPerformanceCounter ResetEvent RtlCaptureContext RtlLookupFunctionEntry RtlVirtualUnwind SetEvent SetUnhandledExceptionFilter SizeofResource TerminateProcess UnhandledExceptionFilter VerSetConditionMask VerifyVersionInfoW WaitForSingleObject WaitForSingleObjectEx WideCharToMultiByte

user32

BeginPaint CallWindowProcW CheckDlgButton ChildWindowFromPoint CloseClipboard DialogBoxIndirectParamW DialogBoxParamW DrawTextW EnableWindow EndDialog EndPaint FillRect GetClientRect GetClipboardData GetDC GetDlgItem GetDlgItemTextW GetFocus GetPropW GetSysColor GetSysColorBrush GetWindowLongPtrW GetWindowRect GetWindowTextW InvalidateRect IsClipboardFormatAvailable IsDlgButtonChecked IsWindowEnabled LoadIconW MapWindowPoints MessageBoxW MoveWindow OpenClipboard PostMessageW RemovePropW SendDlgItemMessageW SendMessageW SetDlgItemTextW SetFocus SetPropW SetTimer SetWindowLongPtrW SetWindowTextW ShowWindow

gdi32

GetStockObject GetTextExtentPoint32W SelectObject SetBkMode SetTextColor

advapi32

RegCloseKey RegCreateKeyExW RegCreateKeyW RegDeleteValueW RegOpenKeyExW RegOpenKeyW RegQueryValueExW RegSetValueExW

comctl32

InitCommonControlsEx

ole32

CoCreateGuid

shell32

SHGetFolderPathW

wininet

HttpAddRequestHeadersW HttpOpenRequestW HttpQueryInfoW HttpSendRequestW InternetCloseHandle InternetConnectW InternetCrackUrlW InternetOpenW InternetQueryDataAvailable InternetReadFile InternetSetOptionW

shlwapi

PathAppendW

msvcp140

??0?$basic_istream@DU?$char_traits@D@std@@@std@@QEAA@PEAV?$basic_streambuf@DU?$char_traits@D@std@@@1@_N@Z ??0?$basic_streambuf@DU?$char_traits@D@std@@@std@@IEAA@XZ ??0_Lockit@std@@QEAA@H@Z ??0ios_base@std@@IEAA@XZ ??1?$basic_streambuf@DU?$char_traits@D@std@@@std@@UEAA@XZ ??1_Lockit@std@@QEAA@XZ ??1ios_base@std@@UEAA@XZ ??5?$basic_istream@DU?$char_traits@D@std@@@std@@QEAAAEAV01@AEAN@Z ??6?$basic_ostream@DU?$char_traits@D@std@@@std@@QEAAAEAV01@H@Z ??6?$basic_ostream@DU?$char_traits@D@std@@@std@@QEAAAEAV01@I@Z ??6?$basic_ostream@DU?$char_traits@D@std@@@std@@QEAAAEAV01@_J@Z ??Bid@locale@std@@QEAA_KXZ ?_Fiopen@std@@YAPEAU_iobuf@@PEB_WHH@Z ?_Getcat@?$codecvt@DDU_Mbstatet@@@std@@SA_KPEAPEBVfacet@locale@2@PEBV42@@Z ?_Getgloballocale@locale@std@@CAPEAV_Locimp@12@XZ ?_Ipfx@?$basic_istream@DU?$char_traits@D@std@@@std@@QEAA_N_N@Z ?_Lock@?$basic_streambuf@DU?$char_traits@D@std@@@std@@UEAAXXZ ?_Osfx@?$basic_ostream@DU?$char_traits@D@std@@@std@@QEAAXXZ ?_Unlock@?$basic_streambuf@DU?$char_traits@D@std@@@std@@UEAAXXZ ?_Xbad_alloc@std@@YAXXZ ?_Xlength_error@std@@YAXPEBD@Z ?_Xout_of_range@std@@YAXPEBD@Z ?bad@ios_base@std@@QEBA_NXZ ?clear@?$basic_ios@DU?$char_traits@D@std@@@std@@QEAAXH_N@Z ?eof@ios_base@std@@QEBA_NXZ ?fail@ios_base@std@@QEBA_NXZ ?flush@?$basic_ostream@DU?$char_traits@D@std@@@std@@QEAAAEAV12@XZ ?getloc@?$basic_streambuf@DU?$char_traits@D@std@@@std@@QEBA?AVlocale@2@XZ ?good@ios_base@std@@QEBA_NXZ ?id@?$codecvt@DDU_Mbstatet@@@std@@2V0locale@2@A ?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 ?put@?$basic_ostream@DU?$char_traits@D@std@@@std@@QEAAAEAV12@D@Z ?read@?$basic_istream@DU?$char_traits@D@std@@@std@@QEAAAEAV12@PEAD_J@Z ?sbumpc@?$basic_streambuf@DU?$char_traits@D@std@@@std@@QEAAHXZ ?seekg@?$basic_istream@DU?$char_traits@D@std@@@std@@QEAAAEAV12@_JH@Z ?setbuf@?$basic_streambuf@DU?$char_traits@D@std@@@std@@MEAAPEAV12@PEAD_J@Z ?setw@std@@YA?AU?$_Smanip@_J@1@_J@Z ?sgetc@?$basic_streambuf@DU?$char_traits@D@std@@@std@@QEAAHXZ ?showmanyc@?$basic_streambuf@DU?$char_traits@D@std@@@std@@MEAA_JXZ ?snextc@?$basic_streambuf@DU?$char_traits@D@std@@@std@@QEAAHXZ ?sputc@?$basic_streambuf@DU?$char_traits@D@std@@@std@@QEAAHD@Z ?sync@?$basic_streambuf@DU?$char_traits@D@std@@@std@@MEAAHXZ ?tellg@?$basic_istream@DU?$char_traits@D@std@@@std@@QEAA?AV?$fpos@U_Mbstatet@@@2@XZ ?uflow@?$basic_streambuf@DU?$char_traits@D@std@@@std@@MEAAHXZ ?widen@?$basic_ios@DU?$char_traits@D@std@@@std@@QEBADD@Z ?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

vcruntime140

_CxxThrowException __C_specific_handler __CxxFrameHandler3 __std_exception_copy __std_exception_destroy __std_terminate memchr memcmp memcpy memmove memset strchr wcsrchr

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

__acrt_iob_func __p__commode __stdio_common_vfprintf __stdio_common_vfscanf __stdio_common_vfwprintf __stdio_common_vsprintf __stdio_common_vsprintf_s __stdio_common_vswprintf_s _fseeki64 _get_stream_buffer_pointers _set_fmode _wfopen_s fclose fflush fgetc fgetpos fgets fputc fread fsetpos fwrite setvbuf ungetc

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

__p___argc __p___wargv _c_exit _cexit _configure_wide_argv _crt_atexit _exit _get_wide_winmain_command_line _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 abort exit terminate

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

__setusermatherr _dtest ceilf modf

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

_gmtime64 _localtime64 _time64 strftime

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

_lock_file _unlock_file

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

_putenv _wgetenv getenv

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

_strdup strcat strcmp strcpy strlen wcscmp wcscpy wcslen wcsncpy_s

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

_callnewh _set_new_mode free malloc

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

rand

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

wcstol

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

_configthreadlocale

Name

.text

Size

172KB

Virtual Size

171KB

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ

Name

.rdata

Size

26KB

Virtual Size

26KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.data

Size

512B

Virtual Size

2KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.pdata

Size

4KB

Virtual Size

4KB

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

.tls

Size

512B

Virtual Size

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.rsrc

Size

33KB

Virtual Size

32KB

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

2026-07-27_c575695cc116a179a641574e3313432a_cobalt-strike_mespinoza

nss3

kernel32

user32

gdi32

advapi32

comctl32

ole32

shell32

wininet

shlwapi

msvcp140

vcruntime140

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

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

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

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

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

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

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

generic