Static task
static1
Behavioral task
behavioral1
Sample
YandexPackLoader.exe
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
YandexPackLoader.exe
Resource
win10v2004-20230220-en
General
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Target
YandexPackLoader.exe.bin
-
Size
238KB
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MD5
2441b783a6417023330931de1844db34
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SHA1
93a1709851bbbc31f40fab3b8f5c22862be814cd
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SHA256
4d0f636248efba56ce7c80d44a9069c8fa3b58f43e3c884c0b94d7efa65de9cf
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SHA512
083e88364888bec318dbdf36c64ba75ff4c395ebe8f9f8126bc0ec894e34881610e7b100c87d3aab5e36242984b30b7d8338acf10fa5d737680cf90a263cae52
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SSDEEP
3072:+x3P/sUhfv9/d7HvEQC2mCE0KMlbq3dVCZbnKvg8t8xtbXe0GjuKnkNrin2j53:S3P/Fv9/d7PzqdCbnKxjUIn2j53
Malware Config
Signatures
-
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource YandexPackLoader.exe.bin
Files
-
YandexPackLoader.exe.bin.exe windows x86
69b98962c1a18061b80bcc1b82de604d
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
wtsapi32
WTSQuerySessionInformationW
WTSFreeMemory
secur32
LsaGetLogonSessionData
LsaFreeReturnBuffer
LsaEnumerateLogonSessions
kernel32
InterlockedDecrement
WaitForSingleObject
GetVersionExW
Sleep
GetLastError
CloseHandle
GetCurrentProcessId
CreateProcessW
GetExitCodeProcess
GetModuleFileNameW
CreateFileW
UnmapViewOfFile
CreateFileMappingW
MapViewOfFile
VirtualQuery
GetCurrentProcess
HeapFree
FindClose
DuplicateHandle
MultiByteToWideChar
OutputDebugStringW
HeapAlloc
GetProcessHeap
WideCharToMultiByte
GetEnvironmentStringsW
GetCommandLineA
GetCPInfo
GetCommandLineW
SetHandleInformation
FreeEnvironmentStringsW
SetEnvironmentVariableW
SetStdHandle
ExitProcess
GetOEMCP
IsValidCodePage
FindNextFileW
FindFirstFileExW
WriteFile
DecodePointer
ReadConsoleW
ReadFile
SetEndOfFile
HeapReAlloc
HeapSize
GetModuleHandleExW
GetStdHandle
LoadLibraryExW
GetProcAddress
FreeLibrary
TlsFree
TlsSetValue
TlsGetValue
WriteConsoleW
SetFilePointerEx
TlsAlloc
LCMapStringW
CompareStringW
GetFileType
GetStringTypeW
GetConsoleMode
GetConsoleCP
FlushFileBuffers
GetACP
LocalFree
UnhandledExceptionFilter
SetUnhandledExceptionFilter
TerminateProcess
IsProcessorFeaturePresent
QueryPerformanceCounter
GetCurrentThreadId
GetSystemTimeAsFileTime
InitializeSListHead
IsDebuggerPresent
GetStartupInfoW
GetModuleHandleW
EncodePointer
RtlUnwind
RaiseException
SetLastError
EnterCriticalSection
LeaveCriticalSection
DeleteCriticalSection
InitializeCriticalSectionAndSpinCount
user32
CharLowerW
wsprintfW
advapi32
CopySid
RegOpenKeyExW
ConvertSidToStringSidW
GetLengthSid
LsaNtStatusToWinError
RegQueryValueExW
OpenProcessToken
GetTokenInformation
RegCloseKey
shell32
ShellExecuteExW
SHCreateDirectoryExW
ole32
CoCreateInstance
CoUninitialize
CoInitialize
OleRun
oleaut32
VariantInit
SysFreeString
SysAllocString
GetErrorInfo
VariantClear
urlmon
URLOpenBlockingStreamW
wintrust
WinVerifyTrust
ws2_32
WSAGetLastError
htons
htonl
connect
socket
send
WSAStartup
getaddrinfo
shutdown
closesocket
WSACleanup
freeaddrinfo
recv
version
GetFileVersionInfoW
VerQueryValueW
GetFileVersionInfoSizeW
Sections
.text Size: 147KB - Virtual size: 147KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 39KB - Virtual size: 38KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 3KB - Virtual size: 13KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.gfids Size: 512B - Virtual size: 308B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.rsrc Size: 26KB - Virtual size: 25KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 7KB - Virtual size: 6KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ