juko | 2026-08-08_677bc7f34266ac11c7aba8d9dfcd9947_elex_wannacry

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General

Target
2026-08-08_677bc7f34266ac11c7aba8d9dfcd9947_elex_wannacry
Size 49KB
Sample260808-ktnl5acf29
SHA256 10c70a40842fac27f65838a30651fdddf4bcc63ebfd0a433d36e336dc444b6fc
MD5 677bc7f34266ac11c7aba8d9dfcd9947
SHA1 0f4a0301e9decd874dc2f7f6e4ce1872a067a890
SHA512 520ac8b2a4b008bd968ec3cb237c37377558159524af84e125cd1ea750c2a65a03cc7f1dfb0aaf4f8db0b5388436966228e0d567246a5379854ac0117c039696
SSDEEP 1536:4LsF2Kerc64sTiX2IV0Dhuj4p4kojVR6h2R:4Ly2Kerc64CiGImVu8p4kojWh2R
TLSH
T12C334C0A2BD650C2D56205B0E99A0F75833FDC3A2127A75EE740765A1C72D6BCF30E9E
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_677bc7f34266ac11c7aba8d9dfcd9947_elex_wannacry

File Explorer

2026-08-08_677bc7f34266ac11c7aba8d9dfcd9947_elex_wannacry

.exe 49KB

2026-08-08_677bc7f34266ac11c7aba8d9dfcd9947_elex_wannacry

IMPHASH 170193414cc4abf0ae27dc2a19d74879
SHA256 10c70a40842fac27f65838a30651fdddf4bcc63ebfd0a433d36e336dc444b6fc
MD5 677bc7f34266ac11c7aba8d9dfcd9947
SHA1 0f4a0301e9decd874dc2f7f6e4ce1872a067a890
SHA512 520ac8b2a4b008bd968ec3cb237c37377558159524af84e125cd1ea750c2a65a03cc7f1dfb0aaf4f8db0b5388436966228e0d567246a5379854ac0117c039696
SSDEEP 1536:4LsF2Kerc64sTiX2IV0Dhuj4p4kojVR6h2R:4Ly2Kerc64CiGImVu8p4kojWh2R
TLSH
T12C334C0A2BD650C2D56205B0E99A0F75833FDC3A2127A75EE740765A1C72D6BCF30E9E
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