juko | 2026-08-18_0ffb022a990203d5567de1a6e361fd84_elex_wannacry

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General

Target
2026-08-18_0ffb022a990203d5567de1a6e361fd84_elex_wannacry
Size 49KB
Sample260818-qefkvsshpe
SHA256 7c431e882b16b0b05238ecdc94547957e948b4f598f891e1da6cd0400ffcd36b
MD5 0ffb022a990203d5567de1a6e361fd84
SHA1 b302cee0fd18ce2ebdc3ac9dab52f3771da5b669
SHA512 83896feca8fe5b226c878a5f77d91bc31fea38ffba179672333d7bcc605c298d73a5ad885bf9e614acfe110b915adf62efe48a6b0a56c117aa55ef4fd78f4ce4
SSDEEP 1536:VLsF2Kerc64sTiX2IV0DhuD4p4kojVR6h2B:VLy2Kerc64CiGImVucp4kojWh2B
TLSH
T127334C0A3BD550C2D56205B0EDAA0F35933BEC391127A75EA780765A1C72D6BCF30E9E
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

trojan juko

Malware Config

Signatures

Family: Juko
Juko is a trojan written in C++.
trojan juko

Detects Juko 1 IoCs

resource	yara_rule
sample	family_juko

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
2026-08-18_0ffb022a990203d5567de1a6e361fd84_elex_wannacry

File Explorer

2026-08-18_0ffb022a990203d5567de1a6e361fd84_elex_wannacry

.exe 49KB

2026-08-18_0ffb022a990203d5567de1a6e361fd84_elex_wannacry

IMPHASH 170193414cc4abf0ae27dc2a19d74879
SHA256 7c431e882b16b0b05238ecdc94547957e948b4f598f891e1da6cd0400ffcd36b
MD5 0ffb022a990203d5567de1a6e361fd84
SHA1 b302cee0fd18ce2ebdc3ac9dab52f3771da5b669
SHA512 83896feca8fe5b226c878a5f77d91bc31fea38ffba179672333d7bcc605c298d73a5ad885bf9e614acfe110b915adf62efe48a6b0a56c117aa55ef4fd78f4ce4
SSDEEP 1536:VLsF2Kerc64sTiX2IV0DhuD4p4kojVR6h2B:VLy2Kerc64CiGImVucp4kojWh2B
TLSH
T127334C0A3BD550C2D56205B0EDAA0F35933BEC391127A75EA780765A1C72D6BCF30E9E
MD5 SHA1 SHA512 SSDEEP TLSH

windows:4 windows x86 arch:x86

Detects Juko
Unsigned PE

Checks for missing Authenticode signature.

Minor OS version

Major OS version

Entry point

23330

Magic Number

267

Subsystem

IMAGE_SUBSYSTEM_WINDOWS_GUI

DLL Characteristics

File Characteristics

IMAGE_FILE_RELOCS_STRIPPED IMAGE_FILE_EXECUTABLE_IMAGE IMAGE_FILE_LINE_NUMS_STRIPPED IMAGE_FILE_LOCAL_SYMS_STRIPPED IMAGE_FILE_32BIT_MACHINE

PDB paths

kernel32

CreateDirectoryW MoveFileW ReadFile SetFilePointer CreateFileW WriteFile GetDriveTypeW GetSystemDirectoryW GetProcAddress GetModuleHandleW GetSystemDefaultLangID GetTickCount GetCurrentProcessId GetComputerNameW FreeLibrary LoadLibraryW GetVersionExW GetCurrentProcess OpenProcess GetVolumeInformationA Process32NextW TerminateProcess Process32FirstW CreateProcessW lstrlenW SetFileTime GetFileSize DeleteFileW Sleep WinExec GetModuleFileNameA MultiByteToWideChar PeekNamedPipe GetStartupInfoW CreatePipe WaitForSingleObject CreateThread RemoveDirectoryW GetTempPathW ExitProcess SetStdHandle DuplicateHandle WideCharToMultiByte SetLastError LoadLibraryA GetModuleHandleA CloseHandle GetModuleFileNameW SetErrorMode FindClose GetLogicalDriveStringsW GetVolumeInformationW GetDiskFreeSpaceExW FindFirstFileW FindNextFileW GetLastError CreateToolhelp32Snapshot GetStartupInfoA

user32

ExitWindowsEx

advapi32

GetTokenInformation RegDeleteValueW RegSetValueExW RegCloseKey LookupPrivilegeValueW AdjustTokenPrivileges OpenProcessToken LookupAccountSidW GetUserNameW RegOpenKeyW

shell32

SHFileOperationW

psapi

EnumProcessModules GetModuleFileNameExW

msvcrt

_controlfp __set_app_type __p__fmode swprintf wcslen wcscpy memset memcpy ??2@YAPAXI@Z wcscmp __CxxFrameHandler _EH_prolog wcscat wcsrchr _wcsnicmp _except_handler3 _wcslwr sprintf strcpy strcmp rand srand strlen time atoi free _stricmp _exit _XcptFilter exit _acmdln __getmainargs _initterm __setusermatherr _adjust_fdiv __p__commode

shlwapi

PathFindFileNameW PathFileExistsW