KB4NetworkCapture[.]exe

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General

Target
KB4NetworkCapture.exe
Size 28.6MB
Sample261026-zj6saagv41
SHA256 3f8d5c5eebf37680e40e6adc5b5444c5cf2ac76e49fc7772b13a97b1d4f61821
MD5 e22aedb33b7db5ba28ef0160d0dbb5b3
SHA1 204d1e14bc9ea2390df946f9debaf0b035ce0ee6
SHA512 4bfcf55a8aa0eaffb4815e1ed77700472bc20992591bb65b6e27d1defbe0e95e944bfc95501d6fa48f439cee58f04bbd5b51c24a0f9b6260c542212539a92689
SSDEEP 786432:x/3W80FgVYWJqCLhwQEzTcjlj2bIVQ7voMK2ZPc7QPJP:x/W3FgVYgqqhwQEXOpYvJ/PckJP
TLSH
T11F6733C4FB8500D6F6ED853DA2B14927B6E079E65BE0C0DB86B086212D3B3C5DE72761
MD5 SHA1 SHA512 SSDEEP TLSH

Score

1^/10

Malware Config

Signatures

File Explorer

KB4NetworkCapture.exe

.exe 28.6MB
network_capture.pyc

106KB

KB4NetworkCapture.exe

IMPHASH e3e80a143805ea18936c8f612e25d363
SHA256 3f8d5c5eebf37680e40e6adc5b5444c5cf2ac76e49fc7772b13a97b1d4f61821
MD5 e22aedb33b7db5ba28ef0160d0dbb5b3
SHA1 204d1e14bc9ea2390df946f9debaf0b035ce0ee6
SHA512 4bfcf55a8aa0eaffb4815e1ed77700472bc20992591bb65b6e27d1defbe0e95e944bfc95501d6fa48f439cee58f04bbd5b51c24a0f9b6260c542212539a92689
SSDEEP 786432:x/3W80FgVYWJqCLhwQEzTcjlj2bIVQ7voMK2ZPc7QPJP:x/W3FgVYgqqhwQEXOpYvJ/PckJP
TLSH
T11F6733C4FB8500D6F6ED853DA2B14927B6E079E65BE0C0DB86B086212D3B3C5DE72761
MD5 SHA1 SHA512 SSDEEP TLSH

Digest

f3:a9:61:20:48:70:a2:cd:9c:26:82:a1:e9:ff:5b:d5:af:a5:6d:a3:6f:c1:3a:6a:2e:f4:12:d6:61:29:d0:d5

Digest Algorithm

sha256

PE Digests Matches

Trusted

Signing Certificate

SERIALNUMBER=4858473,CN=KnowBe4 Inc.,O=KnowBe4 Inc.,L=Clearwater,ST=Florida,C=US,2.5.4.15=#131450726976617465204f7267616e697a6174696f6e,1.3.6.1.4.1.311.60.2.1.2=#130844656c6177617265,1.3.6.1.4.1.311.60.2.1.3=#13025553

Chains

Oct 19, 2026

CN=DigiCert Trusted G4 Code Signing RSA4096 SHA384 2021 CA1,O=DigiCert\, Inc.,C=US

CN=DigiCert Trusted Root G4,OU=www.digicert.com,O=DigiCert Inc,C=US

CN=DigiCert Trusted G4 Code Signing RSA4096 SHA384 2021 CA1,O=DigiCert\, Inc.,C=US

CN=DigiCert Trusted Root G4,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 Trusted G4 Code Signing RSA4096 SHA384 2021 CA1,O=DigiCert\, Inc.,C=US

Serial Number

08:ad:40:b2:60:d2:9c:4c:9f:5e:cd:a9:bd:93:ae:d9

Issuer

CN=DigiCert Trusted Root G4,OU=www.digicert.com,O=DigiCert Inc,C=US

Key Usages

KeyUsageDigitalSignature, KeyUsageCertSign, KeyUsageCRLSign

Ext Key Usages

ExtKeyUsageCodeSigning

Revocation Status

Not revoked

Timespan

Apr 29, 2021 - Apr 28, 2036

Subject

Serial Number

0e:2a:0b:0e:c2:6d:eb:1a:1a:41:b7:be:81:41:a3:62

Issuer

CN=DigiCert Trusted G4 Code Signing RSA4096 SHA384 2021 CA1,O=DigiCert\, Inc.,C=US

Key Usages

KeyUsageDigitalSignature

Ext Key Usages

ExtKeyUsageCodeSigning

Revocation Status

Not revoked

Timespan

Jan 20, 2025 - Jan 19, 2028

Subject

CN=DigiCert SHA256 RSA4096 Timestamp Responder 2026 1,O=DigiCert\, Inc.,C=US

Serial Number

08:4f:dc:33:4f:7e:45:4e:db:c3:0f:8f:f9:92:18:35

Issuer

CN=DigiCert Trusted G4 TimeStamping RSA4096 SHA256 2025 CA1,O=DigiCert\, Inc.,C=US

Key Usages

KeyUsageDigitalSignature

Ext Key Usages

ExtKeyUsageTimeStamping

Revocation Status

Not revoked

Timespan

Aug 5, 2026 - Nov 4, 2037

Subject

CN=DigiCert Trusted G4 TimeStamping RSA4096 SHA256 2025 CA1,O=DigiCert\, Inc.,C=US

Serial Number

0d:c7:ac:57:05:ff:21:99:2e:40:43:22:0c:3a:49:86

Issuer

CN=DigiCert Trusted Root G4,OU=www.digicert.com,O=DigiCert Inc,C=US

Key Usages

KeyUsageDigitalSignature, KeyUsageCertSign, KeyUsageCRLSign

Ext Key Usages

ExtKeyUsageTimeStamping

Revocation Status

Not revoked

Timespan

May 7, 2025 - Jan 14, 2038

Subject

CN=DigiCert Trusted Root G4,OU=www.digicert.com,O=DigiCert Inc,C=US

Serial Number

0e:9b:18:8e:f9:d0:2d:e7:ef:db:50:e2:08:40:18:5a

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

Aug 1, 2022 - Nov 9, 2031

Minor OS version

Major OS version

Entry point

59248

Magic Number

523

Subsystem

IMAGE_SUBSYSTEM_WINDOWS_GUI

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE 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

user32

CreateWindowExW ShutdownBlockReasonCreate MsgWaitForMultipleObjects ShowWindow DestroyWindow RegisterClassW DefWindowProcW PeekMessageW DispatchMessageW TranslateMessage GetMonitorInfoW MonitorFromPoint GetCursorPos GetSystemMetrics PostMessageW GetMessageW MessageBoxW MessageBoxA SystemParametersInfoW DestroyIcon SetWindowLongPtrW GetWindowLongPtrW GetClientRect InvalidateRect ReleaseDC GetDC DrawTextW GetDialogBaseUnits EndDialog DialogBoxIndirectParamW MoveWindow SendMessageW

comctl32

ord380

kernel32

GetACP IsValidCodePage GetStringTypeW GetFileAttributesExW SetEnvironmentVariableW FlushFileBuffers LCMapStringW CompareStringW VirtualProtect GetCurrentDirectoryW HeapAlloc GetFileSizeEx GetConsoleOutputCP GetOEMCP GetCPInfo GetLastError FreeLibrary GetProcAddress LoadLibraryExW GetModuleHandleW MulDiv FormatMessageW CloseHandle GetCurrentProcess GetModuleFileNameW SetDllDirectoryW GetEnvironmentStringsW SetErrorMode GetCurrentProcessId OpenProcess QueryFullProcessImageNameW CreateToolhelp32Snapshot Process32FirstW Process32NextW CreateDirectoryW GetCommandLineW GetEnvironmentVariableW ExpandEnvironmentStringsW DeleteFileW FindClose FindFirstFileW FindNextFileW GetDriveTypeW RemoveDirectoryW GetTempPathW QueryPerformanceCounter QueryPerformanceFrequency WaitForSingleObject Sleep TerminateProcess GetExitCodeProcess CreateProcessW GetStartupInfoW LocalFree SetConsoleCtrlHandler K32EnumProcessModules K32GetModuleFileNameExW CreateFileW FindFirstFileExW GetFinalPathNameByHandleW MultiByteToWideChar WideCharToMultiByte SetFilePointerEx FreeEnvironmentStringsW GetProcessHeap GetTimeZoneInformation HeapSize HeapReAlloc WriteConsoleW SetEndOfFile CreateSymbolicLinkW GetCurrentThreadId GetSystemTimeAsFileTime InitializeSListHead SetUnhandledExceptionFilter RtlUnwindEx SetLastError FlsAlloc FlsGetValue FlsSetValue FlsFree EnterCriticalSection LeaveCriticalSection InitializeCriticalSectionEx DeleteCriticalSection RtlLookupFunctionEntry EncodePointer RaiseException RtlPcToFileHeader GetCommandLineA GetFileInformationByHandle GetFileType PeekNamedPipe SystemTimeToTzSpecificLocalTime FileTimeToSystemTime ReadFile GetFullPathNameW SetStdHandle GetStdHandle WriteFile ExitProcess GetModuleHandleExW IsProcessorFeaturePresent RtlCaptureContext RtlVirtualUnwind IsDebuggerPresent UnhandledExceptionFilter HeapFree GetConsoleMode ReadConsoleW

advapi32

GetTokenInformation OpenProcessToken ConvertSidToStringSidW ConvertStringSecurityDescriptorToSecurityDescriptorW

gdi32

SelectObject DeleteObject CreateFontIndirectW

Name

.text

Size

200KB

Virtual Size

200KB

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ

Name

.rdata

Size

82KB

Virtual Size

82KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.data

Size

3KB

Virtual Size

18KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.pdata

Size

10KB

Virtual Size

9KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.fptable

Size

512B

Virtual Size

256B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.rsrc

Size

61KB

Virtual Size

61KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.reloc

Size

2KB

Virtual Size

1KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_DISCARDABLE IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

File Explorer

KB4NetworkCapture.exe

user32

comctl32

kernel32

advapi32

gdi32

generic

network_capture.pyc