Analysis
- max time kernel
149s - max time network
152s - platform
windows11-21h2_x64 - resource
win11-20260130-en - resource tags
- submitted
24/04/2026, 08:30
General
- Target 2026-04-24_8fc9de1086cccab050a4606434a8cccf_elex_wannacry.exe
- Size 94KB
- Sample260424-kd7eascx2v
- SHA256 967a8422291b662baa6e105aa341d9284ab168a8643e5b3367610408cdd97792
Malware Config
Signatures
- Family: Juko
Juko is a trojan written in C++.
- Detects Juko 8 IoCs
- Executes dropped EXE 2 IoCs
- Adds Run key to start application 2 TTPs 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 7 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 4 IoCs
Adversaries may check for Internet connectivity on compromised systems.
- Runs ping.exe 1 TTPs 3 IoCs
- Suspicious use of WriteProcessMemory 6 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-04-24_8fc9de1086cccab050a4606434a8cccf_elex_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2026-04-24_8fc9de1086cccab050a4606434a8cccf_elex_wannacry.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\Mozilla\WINWORD.exe"C:\Users\Admin\AppData\Roaming\Mozilla\WINWORD.exe" -r2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 -n 2&del "C:\Users\Admin\AppData\Roaming\Mozilla\WINWORD.exe"&ping 127.0.0.1 -n 2&rename "C:\Users\Admin\AppData\Roaming\Mozilla\0000601B" WINWORD.exe&ping 127.0.0.1 -n 2&"C:\Users\Admin\AppData\Roaming\Mozilla\WINWORD.exe" \r3⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\PING.EXEping 127.0.0.1 -n 24⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
- Runs ping.exe
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C:\Windows\SysWOW64\PING.EXEping 127.0.0.1 -n 24⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
- Runs ping.exe
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C:\Windows\SysWOW64\PING.EXEping 127.0.0.1 -n 24⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
- Runs ping.exe
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C:\Users\Admin\AppData\Roaming\Mozilla\WINWORD.exe"C:\Users\Admin\AppData\Roaming\Mozilla\WINWORD.exe" \r4⤵
- Executes dropped EXE
- Adds Run key to start application
- System Location Discovery: System Language Discovery
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Network
MITRE ATT&CK Enterprise v16
Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Replay Monitor
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Downloads
0000601B
WINWORD.exe
memory/1660-12-0x0000000000400000-0x000000000042B000-memory.dmp
memory/1660-16-0x00000000022F0000-0x00000000023B1000-memory.dmp
memory/1660-17-0x0000000000400000-0x000000000042B000-memory.dmp
memory/3828-0-0x0000000000400000-0x000000000042B000-memory.dmp
memory/3828-14-0x0000000000400000-0x000000000042B000-memory.dmp
memory/3828-13-0x00000000021F0000-0x00000000022B1000-memory.dmp
memory/4980-20-0x0000000000400000-0x000000000042B000-memory.dmp
memory/4980-22-0x0000000000400000-0x000000000042B000-memory.dmp
memory/4980-21-0x0000000002650000-0x0000000002711000-memory.dmp