The Classrooms[.]exe

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General

Target

The Classrooms.exe
Size

853KB
MD5

65fe39a904f1b73a149cb0f4d1ca7578
SHA1

cf972d7ea21fbc7968ae44c1d736cd2dd2a8bcd6
SHA256

a398eb8f3ec0fb0c5a558526fe46bbdaf3b1b3d48184882f2694847c0d6a6be2
SHA512

e0b0523780e39d4bdccaadd7deef22707f37178fb2d3c162ef65e29188d09aa03f54285764f3deb18f6b2756296315fbd91b4b696530af86129e7bbb7a6c730d
SSDEEP

12288:8/744aOD8nHS4W7TDGOfsYdJiAbz9yI9/48W/:G9aOSS1TZFTiAbz919An

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
The Classrooms.exe

Files

The Classrooms.exe
.exe windows:6 windows x64 arch:x64

ce1183cc150987a99aef5749f22af81e

Headers

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

C:\buildslave\unity\build\artifacts\WindowsPlayer\Win64_VS2019_nondev_i_r\WindowsPlayer_player_Master_il2cpp_x64.pdb

Imports

unityplayer

UnityMain

kernel32

HeapAlloc
WriteConsoleW
QueryPerformanceCounter
GetCurrentProcessId
GetCurrentThreadId
GetSystemTimeAsFileTime
InitializeSListHead
RtlCaptureContext
RtlLookupFunctionEntry
RtlVirtualUnwind
IsDebuggerPresent
UnhandledExceptionFilter
SetUnhandledExceptionFilter
GetStartupInfoW
IsProcessorFeaturePresent
GetModuleHandleW
CloseHandle
RtlUnwindEx
GetLastError
SetLastError
EnterCriticalSection
LeaveCriticalSection
DeleteCriticalSection
InitializeCriticalSectionAndSpinCount
TlsAlloc
TlsGetValue
TlsSetValue
TlsFree
FreeLibrary
GetProcAddress
LoadLibraryExW
EncodePointer
RaiseException
RtlPcToFileHeader
GetStdHandle
WriteFile
GetModuleFileNameW
GetCurrentProcess
ExitProcess
TerminateProcess
GetModuleHandleExW
HeapFree
FindClose
FindFirstFileExW
FindNextFileW
IsValidCodePage
GetACP
GetOEMCP
GetCPInfo
GetCommandLineA
GetCommandLineW
MultiByteToWideChar
WideCharToMultiByte
GetEnvironmentStringsW
FreeEnvironmentStringsW
SetStdHandle
GetFileType
GetStringTypeW
FlsAlloc
FlsGetValue
FlsSetValue
FlsFree
LCMapStringW
GetProcessHeap
HeapSize
HeapReAlloc
FlushFileBuffers
GetConsoleOutputCP
GetConsoleMode
SetFilePointerEx
CreateFileW

Exports

Exports

AmdPowerXpressRequestHighPerformance
NvOptimusEnablement

Sections

.text
Size: 50KB - Virtual size: 50KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 37KB - Virtual size: 37KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 3KB - Virtual size: 7KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.pdata
Size: 4KB - Virtual size: 3KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

_RDATA
Size: 512B - Virtual size: 148B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.rsrc
Size: 552KB - Virtual size: 552KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 2KB - Virtual size: 1KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

.bind
Size: 201KB - Virtual size: 201KB

IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

ce1183cc150987a99aef5749f22af81e

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

unityplayer

kernel32

Exports

Exports

Sections

.text Size: 50KB - Virtual size: 50KB

.rdata Size: 37KB - Virtual size: 37KB

.data Size: 3KB - Virtual size: 7KB

.pdata Size: 4KB - Virtual size: 3KB

_RDATA Size: 512B - Virtual size: 148B

.rsrc Size: 552KB - Virtual size: 552KB

.reloc Size: 2KB - Virtual size: 1KB

.bind Size: 201KB - Virtual size: 201KB

.text
Size: 50KB - Virtual size: 50KB

.rdata
Size: 37KB - Virtual size: 37KB

.data
Size: 3KB - Virtual size: 7KB

.pdata
Size: 4KB - Virtual size: 3KB

_RDATA
Size: 512B - Virtual size: 148B

.rsrc
Size: 552KB - Virtual size: 552KB

.reloc
Size: 2KB - Virtual size: 1KB

.bind
Size: 201KB - Virtual size: 201KB