LockDownBrowser-2-1-3-09-710125769[.]exe

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General

Target
LockDownBrowser-2-1-3-09-710125769.exe
Size 132.2MB
Sample260623-vcdeyaew2z
SHA256 4d8ecdfe197802c7a1e51487e9e1596935ac8d94382e1a2682443b62fbde7325
MD5 851748bbdf3f9d71cf934fdad4dc2ae6
SHA1 f861e5d02646588e48411bb94c32cf5ea1a1e590
SHA512 d13697cec8f75a9975f5d4bd298afd2ff5b47ed22987479b4139ded805a35b76bb35f04f93deeeea934abb79e82e6ea3d95786b76d37ffcd9c063a979ebf133f
SSDEEP 3145728:PX6uM+AnBDva/76kjxVnWhbFAYXmNCbjpNH85:/6uM+ABDva/lrWhbF1hd
TLSH
T1066833A014280EA5C6BD513AB685B3574FCD24930C61A5BBA58C04FC1AB7254FBE7CEF
MD5 SHA1 SHA512 SSDEEP TLSH

Score

1^/10

Malware Config

Signatures

File Explorer

LockDownBrowser-2-1-3-09-710125769.exe

.exe 132.2MB

LockDownBrowser-2-1-3-09-710125769.exe

IMPHASH 46ca4524caf11a33f9b4f3cb3d408e34
SHA256 4d8ecdfe197802c7a1e51487e9e1596935ac8d94382e1a2682443b62fbde7325
MD5 851748bbdf3f9d71cf934fdad4dc2ae6
SHA1 f861e5d02646588e48411bb94c32cf5ea1a1e590
SHA512 d13697cec8f75a9975f5d4bd298afd2ff5b47ed22987479b4139ded805a35b76bb35f04f93deeeea934abb79e82e6ea3d95786b76d37ffcd9c063a979ebf133f
SSDEEP 3145728:PX6uM+AnBDva/76kjxVnWhbFAYXmNCbjpNH85:/6uM+ABDva/lrWhbF1hd
TLSH
T1066833A014280EA5C6BD513AB685B3574FCD24930C61A5BBA58C04FC1AB7254FBE7CEF
MD5 SHA1 SHA512 SSDEEP TLSH

windows:6 windows x86 arch:x86

Digest

56:e8:3b:d1:c7:4b:0d:27:c7:30:0b:56:08:72:fe:2b:92:6d:d7:ae:4b:82:4c:41:65:b6:ea:d9:03:53:27:90

Digest Algorithm

sha256

PE Digests Matches

Trusted

Signing Certificate

SERIALNUMBER=602 055 420,CN=Respondus\, Inc.,O=Respondus\, Inc.,L=Redmond,ST=Washington,C=US,2.5.4.15=#131450726976617465204f7267616e697a6174696f6e,1.3.6.1.4.1.311.60.2.1.2=#130a57617368696e67746f6e,1.3.6.1.4.1.311.60.2.1.3=#13025553

Chains

Mar 13, 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

03:8a:80:c9:73:00:e7:00:ae:69:e0:65:99:3e:59:a6

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

Oct 31, 2025 - Oct 30, 2028

Subject

CN=DigiCert SHA256 RSA4096 Timestamp Responder 2025 1,O=DigiCert\, Inc.,C=US

Serial Number

0a:80:ef:18:4b:8d:f1:05:82:d1:c4:76:a7:95:74:68

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

Jun 4, 2025 - Sep 3, 2036

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

31183

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_32BIT_MACHINE

PDB paths

C:\VS12\LockDownChrome-SelfExtractor\Release\LdbSelfExtractor.pdb

kernel32

GetTempFileNameA GetExitCodeProcess WriteConsoleW SetEndOfFile HeapReAlloc HeapSize FlushFileBuffers CreateFileW GetProcessHeap LCMapStringW CreateDirectoryA GetStringTypeW SetStdHandle FreeEnvironmentStringsW GetEnvironmentStringsW WideCharToMultiByte MultiByteToWideChar GetCommandLineW GetCPInfo CreateProcessA GetFileSize CloseHandle DeleteFileA GetDiskFreeSpaceExW CreateFileA GetLastError GetTempPathA Sleep GetCommandLineA WriteFile GetModuleFileNameA ReadFile UnhandledExceptionFilter SetUnhandledExceptionFilter GetCurrentProcess TerminateProcess IsProcessorFeaturePresent QueryPerformanceCounter GetCurrentProcessId GetCurrentThreadId GetSystemTimeAsFileTime InitializeSListHead IsDebuggerPresent GetStartupInfoW GetModuleHandleW RtlUnwind SetLastError EnterCriticalSection LeaveCriticalSection DeleteCriticalSection InitializeCriticalSectionAndSpinCount TlsAlloc TlsGetValue TlsSetValue TlsFree FreeLibrary GetProcAddress LoadLibraryExW EncodePointer RaiseException GetStdHandle GetModuleFileNameW ExitProcess GetModuleHandleExW SetFilePointerEx GetConsoleMode ReadConsoleW GetFileType HeapFree GetConsoleOutputCP GetFileSizeEx HeapAlloc FindClose FindFirstFileExW FindNextFileW IsValidCodePage GetACP GetOEMCP DecodePointer

user32

DefWindowProcW PostMessageW DestroyWindow CreateWindowExW GetSystemMetrics RegisterClassExW LoadAcceleratorsW LoadStringW ShowWindow DispatchMessageW PeekMessageW GetMessageW LoadBitmapW TranslateAcceleratorW TranslateMessage LoadIconW LoadCursorW DrawTextW SetRect PostQuitMessage UpdateWindow BeginPaint EndPaint MessageBoxA

gdi32

BitBlt SelectObject CreateCompatibleDC CreateFontW GetStockObject DeleteDC SetTextColor SetBkMode CreatePen Rectangle GetObjectW DeleteObject CreateSolidBrush

Sharing

General

Malware Config

Signatures

File Explorer

LockDownBrowser-2-1-3-09-710125769.exe

kernel32

user32

gdi32

generic