cosmu | 2026-07-31_990e3171acd6b95c95ed3cc64afb8190_elex_rhadamanthys_smoke-loader

General

Target
2026-07-31_990e3171acd6b95c95ed3cc64afb8190_elex_rhadamanthys_smoke-loader
Size 296KB
Sample260731-3hlbqsap4v
SHA256 5f9e4c2702ead0295ec654d70d76931642d89703c61559735d945c9cf5388194
MD5 990e3171acd6b95c95ed3cc64afb8190
SHA1 364b777d2f937d8cfb92883e1394f0d9a7cec7c2
SHA512 05883329bc73546d13e23e5e5bc35a5737f56fc0c732856e95fa864e323bd7a7f318b8bc10c0d2696267eab82b6154835a58cc5a561e68b5c171e004b0b84da1
SSDEEP 6144:OFlKgzelZNQSBQGH/CSpWqT0oAXjiU4bzB:pfBQGH6SfwoAX+U4x
TLSH
T1B854F1453D93C873D0414931CD96CAE15B7E7C13BDA6E11BFB983B4F1EB13888AA6261
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

worm cosmu

Malware Config

Signatures

Family: Cosmu
Cosmu is a Windows worm written in C++.
worm cosmu

Detects Cosmu payload 1 IoCs

Cosmu is a worm written in C++.

resource	yara_rule
sample	family_cosmu

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
2026-07-31_990e3171acd6b95c95ed3cc64afb8190_elex_rhadamanthys_smoke-loader

File Explorer

2026-07-31_990e3171acd6b95c95ed3cc64afb8190_elex_rhadamanthys_smoke-loader

.exe 296KB

2026-07-31_990e3171acd6b95c95ed3cc64afb8190_elex_rhadamanthys_smoke-loader

IMPHASH 5aa33c577ffd8431ff254de85dee5e7b
SHA256 5f9e4c2702ead0295ec654d70d76931642d89703c61559735d945c9cf5388194
MD5 990e3171acd6b95c95ed3cc64afb8190
SHA1 364b777d2f937d8cfb92883e1394f0d9a7cec7c2
SHA512 05883329bc73546d13e23e5e5bc35a5737f56fc0c732856e95fa864e323bd7a7f318b8bc10c0d2696267eab82b6154835a58cc5a561e68b5c171e004b0b84da1
SSDEEP 6144:OFlKgzelZNQSBQGH/CSpWqT0oAXjiU4bzB:pfBQGH6SfwoAX+U4x
TLSH
T1B854F1453D93C873D0414931CD96CAE15B7E7C13BDA6E11BFB983B4F1EB13888AA6261
MD5 SHA1 SHA512 SSDEEP TLSH

windows:4 windows x86 arch:x86

Detects Cosmu payload

Cosmu is a worm written in C++.
Unsigned PE

Checks for missing Authenticode signature.

Minor OS version

0

Major OS version

4

Entry point

12335

Magic Number

267

Subsystem

IMAGE_SUBSYSTEM_WINDOWS_GUI

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_NO_ISOLATION

File Characteristics

IMAGE_FILE_RELOCS_STRIPPED IMAGE_FILE_EXECUTABLE_IMAGE IMAGE_FILE_32BIT_MACHINE

PDB paths

f:\workplace\c++\hannibal\release\hannibal.pdb

kernel32

CreateFileA GetFileSize FindResourceA SetFilePointer FreeLibrary LoadResource UpdateResourceA SetFileTime WriteFile GetDriveTypeA SizeofResource GetFileAttributesA ReadFile MultiByteToWideChar FindFirstFileA GetLastError CopyFileA SetFileAttributesA FindClose LockResource BeginUpdateResourceA GetModuleFileNameA FindNextFileA LoadLibraryExA EnumResourceNamesA GetFileTime EndUpdateResourceA WinExec CloseHandle DeleteFileA CompareStringW CompareStringA FlushFileBuffers GetTimeFormatA GetDateFormatA GetSystemTimeAsFileTime GetCommandLineA HeapFree GetVersionExA HeapAlloc GetProcessHeap GetStartupInfoA TerminateProcess GetCurrentProcess UnhandledExceptionFilter SetUnhandledExceptionFilter IsDebuggerPresent GetProcAddress GetModuleHandleA TlsGetValue TlsAlloc TlsSetValue TlsFree InterlockedIncrement SetLastError GetCurrentThreadId InterlockedDecrement GetCPInfo GetACP GetOEMCP Sleep WideCharToMultiByte GetTimeZoneInformation RaiseException ExitProcess GetStdHandle FreeEnvironmentStringsA GetEnvironmentStrings FreeEnvironmentStringsW GetEnvironmentStringsW SetHandleCount GetFileType DeleteCriticalSection HeapDestroy HeapCreate VirtualFree QueryPerformanceCounter GetTickCount GetCurrentProcessId GetConsoleCP GetConsoleMode EnterCriticalSection LeaveCriticalSection LCMapStringA LCMapStringW GetStringTypeA GetStringTypeW GetLocaleInfoA VirtualAlloc HeapReAlloc HeapSize LoadLibraryA InitializeCriticalSection RtlUnwind SetStdHandle WriteConsoleA GetConsoleOutputCP WriteConsoleW SetEnvironmentVariableA

ole32

CoUninitialize CoCreateInstance CoInitialize

Sharing