Analysis
- max time kernel
150s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
- submitted
31/08/2026, 10:20
General
- Target 2026-08-30_66e0e9ea9753b92e0b26eb501281c942_coinminer_elex_wannacry.exe
- Size 762KB
- Sample260831-mc4m5astfx
- SHA256 73c8cde9c9c332d0ed7f20d0815da1f42f4f7190f8b5ca0f76653860c9756bb3
Malware Config
Signatures
- Family: Cosmu
Cosmu is a Windows worm written in C++.
- Detects Cosmu payload 3 IoCs
Cosmu is a worm written in C++.
- UPX dump on OEP (original entry point) 2 IoCs
- Creates a file in the Startup directory 1 TTPs 1 IoCs
A file was written to a Windows startup folder. Files in these directories are executed automatically when a user logs on or an application initializes.
- Suspicious use of SetThreadContext 1 IoCs
- UPX packed file 2 IoCs
Detects executables packed with UPX/modified UPX open source packer.
- Executes a command shell one-liner 1 TTPs 1 IoCs
Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.
- System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious use of SetWindowsHookEx 2 IoCs
- Suspicious use of WriteProcessMemory 11 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-30_66e0e9ea9753b92e0b26eb501281c942_coinminer_elex_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-30_66e0e9ea9753b92e0b26eb501281c942_coinminer_elex_wannacry.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c echo on error resume next:CreateObject("WScript.Shell").Run "C:\Users\Admin\AppData\Local\Temp\2026-08-30_66e0e9ea9753b92e0b26eb501281c942_coinminer_elex_wannacry.exe",1: >"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\x.vbs"2⤵
- Creates a file in the Startup directory
- Executes a command shell one-liner
- System Location Discovery: System Language Discovery
-
-
C:\Users\Admin\AppData\Local\Temp\2026-08-30_66e0e9ea9753b92e0b26eb501281c942_coinminer_elex_wannacry.exeC:\Users\Admin\AppData\Local\Temp\2026-08-30_66e0e9ea9753b92e0b26eb501281c942_coinminer_elex_wannacry.exe2⤵
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
memory/548-0-0x0000000000400000-0x000000000046E000-memory.dmp
memory/548-1-0x000000000040C000-0x000000000040D000-memory.dmp
memory/548-6-0x0000000000400000-0x000000000046E000-memory.dmp
memory/4140-3-0x0000000000400000-0x0000000000658000-memory.dmp
memory/4140-4-0x0000000000400000-0x0000000000658000-memory.dmp
memory/4140-5-0x0000000000400000-0x0000000000478000-memory.dmp