juko | 2026-08-04_4f915b9f8507e9e74e637a81739b031b_elex_wannacry

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General

Target
2026-08-04_4f915b9f8507e9e74e637a81739b031b_elex_wannacry
Size 153KB
Sample260804-h6dxcafb65
SHA256 8cb376783194fc857fcab17f2807ff44f7a59b7bf2b51e279df0f8ba7dd9c8c7
MD5 4f915b9f8507e9e74e637a81739b031b
SHA1 d952dbec86874bb810076c0f1f83fd36b4e4a87a
SHA512 b712f24423302c3e359a51b2e286928b5431304cfbff0400d23adb478056f32773293885f9400a969a9286ba094f3610ea67bf0a784365c72cfe14d67578e9c3
SSDEEP 3072:3Ly2Kerc64CiGImpvxPloaK6Or1kz36Rq4QqjYCr6KNe2aKd/EAGzYMzhq1/Z2g5:3Ly2Kwc64YIspdmrNPyEe2Xd/EPYQmZf
TLSH
T11DE35C06A14350F6CC2740B056D96BFF8A31BE3544219EEAE798FC69EE73891672D306
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
2026-08-04_4f915b9f8507e9e74e637a81739b031b_elex_wannacry

File Explorer

2026-08-04_4f915b9f8507e9e74e637a81739b031b_elex_wannacry

.exe 153KB

2026-08-04_4f915b9f8507e9e74e637a81739b031b_elex_wannacry

IMPHASH 170193414cc4abf0ae27dc2a19d74879
SHA256 8cb376783194fc857fcab17f2807ff44f7a59b7bf2b51e279df0f8ba7dd9c8c7
MD5 4f915b9f8507e9e74e637a81739b031b
SHA1 d952dbec86874bb810076c0f1f83fd36b4e4a87a
SHA512 b712f24423302c3e359a51b2e286928b5431304cfbff0400d23adb478056f32773293885f9400a969a9286ba094f3610ea67bf0a784365c72cfe14d67578e9c3
SSDEEP 3072:3Ly2Kerc64CiGImpvxPloaK6Or1kz36Rq4QqjYCr6KNe2aKd/EAGzYMzhq1/Z2g5:3Ly2Kwc64YIspdmrNPyEe2Xd/EPYQmZf
TLSH
T11DE35C06A14350F6CC2740B056D96BFF8A31BE3544219EEAE798FC69EE73891672D306
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

Name

.text

Size

19KB

Virtual Size

19KB

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ

Name

.rdata

Size

3KB

Virtual Size

3KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.data

Size

1024B

Virtual Size

68KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.rdata

Size

5KB

Virtual Size

5KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.text

Size

104KB

Virtual Size

108KB

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.text

Size

17KB

Virtual Size

20KB

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Sharing

General

Malware Config

Signatures

File Explorer

2026-08-04_4f915b9f8507e9e74e637a81739b031b_elex_wannacry

kernel32

user32

advapi32

shell32

psapi

msvcrt

shlwapi

generic