2026-04-19_be95bc5cc362a6e1cd49981d00d90d50_cobalt-strike_mespinoza

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General

Target
2026-04-19_be95bc5cc362a6e1cd49981d00d90d50_cobalt-strike_mespinoza
Size 630KB
Sample260419-rrwchshz21
SHA256 6f5b1f6b1aa4216a2d02d1eb58d7dda5e96f6c25aa8d848c301e202a0e4ff959
MD5 be95bc5cc362a6e1cd49981d00d90d50
SHA1 b04cc48b4ffc58bcae62b2f0ab9d6fbd935cae2b
SHA512 3a2f1d29a55420a4226966ee1c92db29062503f46e7acdbddcd1e7937437f0f51e3595e8c35b933ed9e2b4e8415eb729e3e836d44be0b7345ce6961c23316904
SSDEEP 12288:IRx3Tx3RZuRNokh7YIMMGmr+YLSlNQU2ZbFzVi8XC2+X+IhE9MjveVkjsIFib:olTx3vINPh7pIlwSlGUYbxV7S2mHgMjh
TLSH
T180D42286BA4350D6CA21E2F1E5E39611DB64BC404FF128CF47A0E7B62F799C1277D868
MD5 SHA1 SHA512 SSDEEP TLSH

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
2026-04-19_be95bc5cc362a6e1cd49981d00d90d50_cobalt-strike_mespinoza

File Explorer

2026-04-19_be95bc5cc362a6e1cd49981d00d90d50_cobalt-strike_mespinoza

.exe 630KB

2026-04-19_be95bc5cc362a6e1cd49981d00d90d50_cobalt-strike_mespinoza

IMPHASH af27fa7223a9b6fe80447a0e6715e632
SHA256 6f5b1f6b1aa4216a2d02d1eb58d7dda5e96f6c25aa8d848c301e202a0e4ff959
MD5 be95bc5cc362a6e1cd49981d00d90d50
SHA1 b04cc48b4ffc58bcae62b2f0ab9d6fbd935cae2b
SHA512 3a2f1d29a55420a4226966ee1c92db29062503f46e7acdbddcd1e7937437f0f51e3595e8c35b933ed9e2b4e8415eb729e3e836d44be0b7345ce6961c23316904
SSDEEP 12288:IRx3Tx3RZuRNokh7YIMMGmr+YLSlNQU2ZbFzVi8XC2+X+IhE9MjveVkjsIFib:olTx3vINPh7pIlwSlGUYbxV7S2mHgMjh
TLSH
T180D42286BA4350D6CA21E2F1E5E39611DB64BC404FF128CF47A0E7B62F799C1277D868
MD5 SHA1 SHA512 SSDEEP TLSH

Unsigned PE

Checks for missing Authenticode signature.

Minor OS version

Major OS version

Entry point

41760

Magic Number

523

Subsystem

IMAGE_SUBSYSTEM_WINDOWS_CUI

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_1579288126\build\src\obj-firefox\toolkit\components\telemetry\pingsender\pingsender.pdb

mozglue

??2@YAPEAX_K@Z ??3@YAXPEAX@Z ??3@YAXPEAX_K@Z free malloc

wininet

HttpOpenRequestA HttpQueryInfoA HttpSendRequestA InternetCloseHandle InternetConnectA InternetCrackUrlA InternetOpenA InternetSetOptionA

msvcp140

??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 ??Bid@locale@std@@QEAA_KXZ ?_Fiopen@std@@YAPEAU_iobuf@@PEBDHH@Z ?_Getcat@?$codecvt@DDU_Mbstatet@@@std@@SA_KPEAPEBVfacet@locale@2@PEBV42@@Z ?_Getgloballocale@locale@std@@CAPEAV_Locimp@12@XZ ?_Xlength_error@std@@YAXPEBD@Z ?bad@ios_base@std@@QEBA_NXZ ?clear@?$basic_ios@DU?$char_traits@D@std@@@std@@QEAAXH_N@Z ?eof@ios_base@std@@QEBA_NXZ ?getloc@?$basic_streambuf@DU?$char_traits@D@std@@@std@@QEBA?AVlocale@2@XZ ?id@?$codecvt@DDU_Mbstatet@@@std@@2V0locale@2@A ?init@?$basic_ios@DU?$char_traits@D@std@@@std@@IEAAXPEAV?$basic_streambuf@DU?$char_traits@D@std@@@2@_N@Z ?read@?$basic_istream@DU?$char_traits@D@std@@@std@@QEAAAEAV12@PEAD_J@Z ?showmanyc@?$basic_streambuf@DU?$char_traits@D@std@@@std@@MEAA_JXZ ?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

CloseHandle CreateEventW DeleteCriticalSection EnterCriticalSection GetCurrentProcess GetCurrentProcessId GetCurrentThreadId GetModuleHandleW GetProcAddress GetSystemTimeAsFileTime InitializeCriticalSectionAndSpinCount InitializeSListHead IsDebuggerPresent IsProcessorFeaturePresent LeaveCriticalSection QueryPerformanceCounter ResetEvent RtlCaptureContext RtlLookupFunctionEntry RtlVirtualUnwind SetEvent SetUnhandledExceptionFilter TerminateProcess UnhandledExceptionFilter WaitForSingleObjectEx

vcruntime140

__C_specific_handler __CxxFrameHandler3 __std_terminate memcmp memcpy memmove memset

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

_chdir _fullpath _lock_file _makepath_s _splitpath_s _unlock_file remove

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

__p__commode _fseeki64 _get_stream_buffer_pointers _set_fmode fclose fflush fgetc fgetpos fputc fread fsetpos fwrite setvbuf ungetc

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

_gmtime64 _time64 strftime

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

__p___argc __p___argv _c_exit _cexit _configure_narrow_argv _crt_atexit _exit _get_initial_narrow_environment _initialize_narrow_environment _initialize_onexit_table _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

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

_configthreadlocale

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

_set_new_mode

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

strlen

Name

.text

Size

38KB

Virtual Size

38KB

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ

Name

.rdata

Size

18KB

Virtual Size

18KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.data

Size

512B

Virtual Size

1KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.pdata

Size

1KB

Virtual Size

1KB

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

1KB

Virtual Size

1KB

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

2026-04-19_be95bc5cc362a6e1cd49981d00d90d50_cobalt-strike_mespinoza

mozglue

wininet

msvcp140

kernel32

vcruntime140

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

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

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

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

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

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

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

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

generic