Firefox Installer[.]exe

General

Target
Firefox Installer.exe
Size 1.4MB
Sample261102-d4y3aaex2y
SHA256 10fad0789a16665af7073fccd7fcb1879aed624312db99f598b80c4f43f565fa
MD5 3e0d4615707b4059adc06d9e2b77b32f
SHA1 41251b6d4e7e64cb4fb5b10de1a4c9515e257df8
SHA512 dcab745a53c6e9393b4162692768fbe9608bfd18ba4f027f51f9be3fed4f8e8dd9f923b6b4ff0113732348a96370fd71acd5eb22478871274679fd6afce61206
SSDEEP 24576:EudIxinvXfjWlNBvPeM/XM9zcgavvcoyx6cGWZzgIv2OucbLRU4BxDx4v6:E54njaBq9Igavbyx6nWZuO7bLRUW9Ki
TLSH
T162651247ABA139FBC2528FF8A1B65214EF72FC26C73887CB875029669E179D11E7C101
MD5 SHA1 SHA512 SSDEEP TLSH

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
Firefox Installer.exe

File Explorer

Firefox Installer.exe

.exe 1.4MB

Firefox Installer.exe

IMPHASH e552845da4c6f3f8f76a71dc37d5c4dc
SHA256 10fad0789a16665af7073fccd7fcb1879aed624312db99f598b80c4f43f565fa
MD5 3e0d4615707b4059adc06d9e2b77b32f
SHA1 41251b6d4e7e64cb4fb5b10de1a4c9515e257df8
SHA512 dcab745a53c6e9393b4162692768fbe9608bfd18ba4f027f51f9be3fed4f8e8dd9f923b6b4ff0113732348a96370fd71acd5eb22478871274679fd6afce61206
SSDEEP 24576:EudIxinvXfjWlNBvPeM/XM9zcgavvcoyx6cGWZzgIv2OucbLRU4BxDx4v6:E54njaBq9Igavbyx6nWZuO7bLRUW9Ki
TLSH
T162651247ABA139FBC2528FF8A1B65214EF72FC26C73887CB875029669E179D11E7C101
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

18624

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

kernel32

GetEnvironmentVariableW CreateDirectoryW CreateFileW GetFileSizeEx ReadFile SetFilePointerEx WriteFile CloseHandle HeapAlloc HeapFree GetProcessHeap CreateProcessW InitializeProcThreadAttributeList DeleteProcThreadAttributeList UpdateProcThreadAttribute GetTickCount GetModuleFileNameW MoveFileExW QueryPerformanceCounter GetCurrentProcessId GetCurrentThreadId GetSystemTimeAsFileTime InitializeSListHead SetUnhandledExceptionFilter GetStartupInfoW GetModuleHandleW WriteConsoleW RtlPcToFileHeader RaiseException RtlLookupFunctionEntry RtlUnwindEx GetLastError SetLastError FlsAlloc FlsGetValue FlsSetValue FlsFree EncodePointer EnterCriticalSection LeaveCriticalSection InitializeCriticalSectionEx DeleteCriticalSection GetStdHandle 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 GetConsoleMode

Name

.text

Size

73KB

Virtual Size

72KB

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ

Name

.rdata

Size

51KB

Virtual Size

50KB

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.exe

kernel32

generic