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Report - .csrss.exe

UPX Malicious Library PE File PE32
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ScreenShot
Created 2021.08.06 16:44 Machine s1_win7_x6401
Filename .csrss.exe
Type PE32 executable (GUI) Intel 80386, for MS Windows
AI Score
5
 Behavior Score
2.6
ZERO API file : malware
VT API (file) 31 detected (AIDetect, malware1, malicious, high confidence, score, Unsafe, confidence, 100%, Zusy, PWSX, UrSnif, Wacatac, ai score=89, Kryptik, CLASSIC, Static AI, Malicious PE, susgen, Genetic, QVM10)
md5 ef5105caed1d432aca814ba5eb4b9d90
sha256 276df8a116116425e538bfea657c789006d45a6e9f2802f396154574aa0085e3
ssdeep 3072:JmZ4LE4JUUIbusMwdSLA68JI1lR5SrReX6owI8zxJWtk0+syVUI:JfLEGUL67wAPSrRgzwIoxJgTBI
imphash 14314a2a561f3c740022851a022f21a4
impfuzzy 48:QzRvpTZtZ6/UxgEdfwhKYZtBGjxcXuyMc2j+qf:Q1RFnkYg0fwbZtBGjxcpMc2jH
  Network IP location

Signature (6cnts)

Level Description
danger File has been identified by 31 AntiVirus engines on VirusTotal as malicious
notice Allocates read-write-execute memory (usually to unpack itself)
notice Foreign language identified in PE resource
notice The binary likely contains encrypted or compressed data indicative of a packer
info The file contains an unknown PE resource name possibly indicative of a packer
info This executable has a PDB path

Rules (4cnts)

Level Name Description Collection
watch Malicious_Library_Zero Malicious_Library binaries (upload)
watch UPX_Zero UPX packed file binaries (upload)
info IsPE32 (no description) binaries (upload)
info PE_Header_Zero PE File Signature binaries (upload)

Network (0cnts) ?

Request CC ASN Co IP4 Rule ? ZERO ?

Suricata ids

PE API

IAT(Import Address Table) Library

KERNEL32.dll
 0x401000 GetComputerNameA
 0x401004 SetProcessAffinityMask
 0x401008 CreateFileA
 0x40100c GlobalDeleteAtom
 0x401010 WriteConsoleOutputCharacterW
 0x401014 lstrlenA
 0x401018 GetConsoleAliasesLengthW
 0x40101c EnumDateFormatsExW
 0x401020 BuildCommDCBAndTimeoutsA
 0x401024 UpdateResourceA
 0x401028 EndUpdateResourceW
 0x40102c GetCurrentProcess
 0x401030 GetUserDefaultLCID
 0x401034 WaitForSingleObject
 0x401038 WriteConsoleInputA
 0x40103c SetEvent
 0x401040 GetSystemDefaultLCID
 0x401044 GetModuleHandleW
 0x401048 ReadConsoleW
 0x40104c SetFileTime
 0x401050 WriteFile
 0x401054 CreateActCtxW
 0x401058 InitializeCriticalSection
 0x40105c ActivateActCtx
 0x401060 GetConsoleCP
 0x401064 GlobalFindAtomA
 0x401068 LoadLibraryW
 0x40106c TerminateThread
 0x401070 ReadConsoleInputA
 0x401074 CopyFileW
 0x401078 GetSystemWindowsDirectoryA
 0x40107c ReadConsoleOutputW
 0x401080 GetVersionExW
 0x401084 InterlockedPopEntrySList
 0x401088 DnsHostnameToComputerNameW
 0x40108c GetConsoleAliasW
 0x401090 SetConsoleCursorPosition
 0x401094 VerifyVersionInfoA
 0x401098 CreateActCtxA
 0x40109c SetConsoleTitleA
 0x4010a0 GetConsoleOutputCP
 0x4010a4 GetLongPathNameW
 0x4010a8 SetLastError
 0x4010ac GetProcAddress
 0x4010b0 VerLanguageNameA
 0x4010b4 GetConsoleDisplayMode
 0x4010b8 EnterCriticalSection
 0x4010bc GetDiskFreeSpaceW
 0x4010c0 LoadLibraryA
 0x4010c4 WriteConsoleA
 0x4010c8 InterlockedExchangeAdd
 0x4010cc DeleteTimerQueue
 0x4010d0 CreateTapePartition
 0x4010d4 GetProfileStringA
 0x4010d8 BuildCommDCBA
 0x4010dc VirtualProtect
 0x4010e0 GetFileAttributesExW
 0x4010e4 GetCPInfoExA
 0x4010e8 FindFirstVolumeA
 0x4010ec GetPrivateProfileSectionW
 0x4010f0 GetSystemTime
 0x4010f4 AreFileApisANSI
 0x4010f8 CreateThread
 0x4010fc UnhandledExceptionFilter
 0x401100 SetUnhandledExceptionFilter
 0x401104 GetLastError
 0x401108 HeapReAlloc
 0x40110c HeapAlloc
 0x401110 GetStartupInfoW
 0x401114 RaiseException
 0x401118 RtlUnwind
 0x40111c Sleep
 0x401120 ExitProcess
 0x401124 GetStdHandle
 0x401128 GetModuleFileNameA
 0x40112c TerminateProcess
 0x401130 IsDebuggerPresent
 0x401134 HeapFree
 0x401138 DeleteCriticalSection
 0x40113c LeaveCriticalSection
 0x401140 HeapCreate
 0x401144 VirtualFree
 0x401148 VirtualAlloc
 0x40114c GetModuleFileNameW
 0x401150 FreeEnvironmentStringsW
 0x401154 GetEnvironmentStringsW
 0x401158 GetCommandLineW
 0x40115c SetHandleCount
 0x401160 GetFileType
 0x401164 GetStartupInfoA
 0x401168 TlsGetValue
 0x40116c TlsAlloc
 0x401170 TlsSetValue
 0x401174 TlsFree
 0x401178 InterlockedIncrement
 0x40117c GetCurrentThreadId
 0x401180 InterlockedDecrement
 0x401184 QueryPerformanceCounter
 0x401188 GetTickCount
 0x40118c GetCurrentProcessId
 0x401190 GetSystemTimeAsFileTime
 0x401194 InitializeCriticalSectionAndSpinCount
 0x401198 HeapSize
 0x40119c GetCPInfo
 0x4011a0 GetACP
 0x4011a4 GetOEMCP
 0x4011a8 IsValidCodePage
 0x4011ac GetLocaleInfoA
 0x4011b0 WideCharToMultiByte
 0x4011b4 GetStringTypeA
 0x4011b8 MultiByteToWideChar
 0x4011bc GetStringTypeW
 0x4011c0 LCMapStringA
 0x4011c4 LCMapStringW
USER32.dll
 0x4011cc GetAltTabInfoA
 0x4011d0 RealChildWindowFromPoint

EAT(Export Address Table) is none


Similarity measure (PE file only) - Checking for service failure