juko | 2026-08-08_ab09556ee3483725df178fef22456986_elex_wannacry

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General

Target
2026-08-08_ab09556ee3483725df178fef22456986_elex_wannacry
Size 37KB
Sample260808-kpr4raw1ht
SHA256 7705289b02c77ab400aa973a7a7f62e1e89d9050a243d6be9ea15b837b59ec9e
MD5 ab09556ee3483725df178fef22456986
SHA1 de3b1090011f1ed71706b5bb53d800540e91f687
SHA512 d9dc12248ff737b76941c7d2fe6323d08dc3c46ceb5a9accd1aaede42f34a9192ced69801ce13cd2e26ea5b58394e113cf97e991e33fcc13210a47c3e10cbc92
SSDEEP 768:FZL/0F24lercjO4sTZg5ZLvn2IuWZ0kqKNPWQHpZa5ywax:3LsF2Kerc64sTiX2IV0DhuogwK
TLSH
T111035C1A299160A2D55310B0E9D82FB4C53D8C76106BB062F740BE59A8B3CD7DF72BCE
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
2026-08-08_ab09556ee3483725df178fef22456986_elex_wannacry

File Explorer

2026-08-08_ab09556ee3483725df178fef22456986_elex_wannacry

.exe 37KB

2026-08-08_ab09556ee3483725df178fef22456986_elex_wannacry

IMPHASH 170193414cc4abf0ae27dc2a19d74879
SHA256 7705289b02c77ab400aa973a7a7f62e1e89d9050a243d6be9ea15b837b59ec9e
MD5 ab09556ee3483725df178fef22456986
SHA1 de3b1090011f1ed71706b5bb53d800540e91f687
SHA512 d9dc12248ff737b76941c7d2fe6323d08dc3c46ceb5a9accd1aaede42f34a9192ced69801ce13cd2e26ea5b58394e113cf97e991e33fcc13210a47c3e10cbc92
SSDEEP 768:FZL/0F24lercjO4sTZg5ZLvn2IuWZ0kqKNPWQHpZa5ywax:3LsF2Kerc64sTiX2IV0DhuogwK
TLSH
T111035C1A299160A2D55310B0E9D82FB4C53D8C76106BB062F740BE59A8B3CD7DF72BCE
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