Static task
static1
Behavioral task
behavioral1
Sample
steamclient_loader.exe
Resource
win7-20240729-en
Behavioral task
behavioral2
Sample
steamclient_loader.exe
Resource
win10v2004-20240802-en
General
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Target
steamclient_loader.exe
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Size
76KB
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MD5
ec93cfd90257e91a5590e1812aae9113
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SHA1
540a4962d904e7a43400eafba882a3f4cc751a62
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SHA256
dc9720d7e2bf6d9588283fa298ce1501f25e6f9b1e2ac1e2f39de744e08fb976
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SHA512
d33113630575759c1018a8a0ac0f50b62bae0e3dcd53adef0d9a236c80564331dfa3c4de8f9fc311e16e678004922ad621883dfca67d9cc569fbde6480291df5
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SSDEEP
1536:+vYXSzi5TVvTmJ0Jbp5cT0SwnRnbaRsWyBqSTKVXsW5Wa3cdvZCFyZH:+O3vTmmpTSwnRnbisISeVCaGvZOyZH
Malware Config
Signatures
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource steamclient_loader.exe
Files
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steamclient_loader.exe.exe windows:6 windows x86 arch:x86
32b975e2085afab52d42e49073b45886
Headers
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
Imports
advapi32
RegCreateKeyExA
RegOpenKeyExA
RegQueryValueExA
RegSetValueExA
RegCloseKey
user32
MessageBoxA
kernel32
DecodePointer
SetEnvironmentVariableA
GetFileAttributesA
GetFullPathNameA
CloseHandle
WaitForSingleObject
GetCurrentProcessId
ExitProcess
TerminateProcess
ResumeThread
CreateProcessA
GetModuleFileNameA
GetModuleHandleA
lstrcpyA
lstrlenA
GetPrivateProfileStringA
UnhandledExceptionFilter
SetUnhandledExceptionFilter
GetCurrentProcess
IsProcessorFeaturePresent
QueryPerformanceCounter
GetCurrentThreadId
GetSystemTimeAsFileTime
InitializeSListHead
IsDebuggerPresent
GetStartupInfoW
GetModuleHandleW
RtlUnwind
GetLastError
SetLastError
EnterCriticalSection
LeaveCriticalSection
DeleteCriticalSection
InitializeCriticalSectionAndSpinCount
TlsAlloc
TlsGetValue
TlsSetValue
TlsFree
FreeLibrary
GetProcAddress
LoadLibraryExW
GetStdHandle
WriteFile
GetModuleFileNameW
GetModuleHandleExW
HeapFree
HeapAlloc
FindClose
FindFirstFileExW
FindNextFileW
IsValidCodePage
GetACP
GetOEMCP
GetCPInfo
GetCommandLineA
GetCommandLineW
MultiByteToWideChar
WideCharToMultiByte
GetEnvironmentStringsW
FreeEnvironmentStringsW
SetStdHandle
GetFileType
GetStringTypeW
LCMapStringW
GetProcessHeap
HeapSize
HeapReAlloc
FlushFileBuffers
GetConsoleCP
GetConsoleMode
SetFilePointerEx
CreateFileW
WriteConsoleW
RaiseException
Sections
.text Size: 45KB - Virtual size: 44KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 23KB - Virtual size: 23KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 2KB - Virtual size: 4KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.gfids Size: 512B - Virtual size: 176B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 4KB - Virtual size: 3KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ