Firefox Installer Setup[.]exe

General

Target
Firefox Installer Setup.exe
Size 1.4MB
Sample261102-ay45kaes31
SHA256 fbbb0c6d036e0c161dfadc81a8068384ad0070a35f8d663d3818d777be4468fb
MD5 1b2b6764073c6b1cb203bbc531cbdf53
SHA1 7e90b854d76141b766cf36355c98988ae6216b85
SHA512 4f0d0ee42f97d186177862f99a755cbc2cdb4228debfd574f480df7596ba0a4d0507bb2d13f3ce7ed414c6a5a0304251c6c0e365a6333cb52b23041cb512f240
SSDEEP 24576:H2TnIxinvXfjWlNBvPeM/XM9zcgg+cYtisyRKZGiXkHz6C4iPCDRZmYDzG:HeI4njaBq9Ig5/XkHz6xiPCqv
TLSH
T14F651283BAD328FAC2014FF8E9726A09EF73BC25936CC7DB87501A665D594D11E7C122
MD5 SHA1 SHA512 SSDEEP TLSH

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
Firefox Installer Setup.exe

File Explorer

Firefox Installer Setup.exe

.exe 1.4MB

Firefox Installer Setup.exe

IMPHASH 22e77ca8c77b29b1db2ecbf486a22afd
SHA256 fbbb0c6d036e0c161dfadc81a8068384ad0070a35f8d663d3818d777be4468fb
MD5 1b2b6764073c6b1cb203bbc531cbdf53
SHA1 7e90b854d76141b766cf36355c98988ae6216b85
SHA512 4f0d0ee42f97d186177862f99a755cbc2cdb4228debfd574f480df7596ba0a4d0507bb2d13f3ce7ed414c6a5a0304251c6c0e365a6333cb52b23041cb512f240
SSDEEP 24576:H2TnIxinvXfjWlNBvPeM/XM9zcgg+cYtisyRKZGiXkHz6C4iPCDRZmYDzG:HeI4njaBq9Ig5/XkHz6xiPCqv
TLSH
T14F651283BAD328FAC2014FF8E9726A09EF73BC25936CC7DB87501A665D594D11E7C122
MD5 SHA1 SHA512 SSDEEP TLSH

windows:6 windows x64 arch:x64

Unsigned PE

Checks for missing Authenticode signature.

Minor OS version

0

Major OS version

6

Entry point

18912

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_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE IMAGE_FILE_LARGE_ADDRESS_AWARE

PDB paths

user32

GetWindowThreadProcessId GetShellWindow

kernel32

GetStdHandle WriteConsoleW GetEnvironmentVariableW CreateDirectoryW CreateFileW GetFileSizeEx ReadFile SetFilePointerEx WriteFile CloseHandle HeapAlloc HeapFree GetProcessHeap CreateProcessW InitializeProcThreadAttributeList DeleteProcThreadAttributeList UpdateProcThreadAttribute OpenProcess GetTickCount GetModuleFileNameW MoveFileExW CreateToolhelp32Snapshot Process32FirstW Process32NextW QueryPerformanceCounter GetCurrentProcessId GetCurrentThreadId GetSystemTimeAsFileTime InitializeSListHead SetUnhandledExceptionFilter GetStartupInfoW GetModuleHandleW GetConsoleMode RtlPcToFileHeader RaiseException RtlLookupFunctionEntry RtlUnwindEx GetLastError SetLastError FlsAlloc FlsGetValue FlsSetValue FlsFree EncodePointer EnterCriticalSection LeaveCriticalSection InitializeCriticalSectionEx DeleteCriticalSection GetCurrentProcess ExitProcess TerminateProcess FreeLibrary GetModuleHandleExW GetProcAddress IsProcessorFeaturePresent RtlCaptureContext RtlVirtualUnwind IsDebuggerPresent UnhandledExceptionFilter FindClose FindFirstFileExW FindNextFileW IsValidCodePage GetACP GetOEMCP GetCPInfo GetCommandLineA GetCommandLineW MultiByteToWideChar WideCharToMultiByte GetEnvironmentStringsW FreeEnvironmentStringsW SetStdHandle GetFileType GetStringTypeW VirtualProtect LoadLibraryExW LCMapStringW HeapSize HeapReAlloc FlushFileBuffers GetConsoleOutputCP

Name

.text

Size

75KB

Virtual Size

74KB

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ

Name

.rdata

Size

52KB

Virtual Size

51KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.data

Size

3KB

Virtual Size

5KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.pdata

Size

5KB

Virtual Size

4KB

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

1024B

Virtual Size

792B

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

Firefox Installer Setup.exe

user32

kernel32

generic