Analysis
- max time kernel
149s - max time network
155s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
- submitted
02/11/2026, 12:14
General
- Target pyservice92.exe
- Size 6.3MB
- Sample261102-pee4nas1a1
- SHA256 e8a91238df80f4649099f7cbec4460e0bc533a046a598392b14a378cc5d56075
Malware Config
Signatures
- Family: xmrig
XMRig is a high performance, open source, cross platform CPU/GPU miner.
- Suspicious use of NtCreateUserProcessOtherParentProcess 1 TTPs 2 IoCs
- XMRig Miner payload 16 IoCs
- Executes dropped EXE 2 IoCs
- Contacts third-party web service commonly abused for C2 1 TTPs 4 IoCs
Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.
- Suspicious use of SetThreadContext 2 IoCs
- Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Using powershell.exe command.
- Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs
The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.
- Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious use of AdjustPrivilegeToken 47 IoCs
- Suspicious use of FindShellTrayWindow 2 IoCs
- Suspicious use of WriteProcessMemory 4 IoCs
- Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
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C:\Windows\explorer.exeexplorer.exe /LOADSAVEDWINDOWS1⤵
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C:\Users\Admin\AppData\Local\Temp\pyservice92.exe"C:\Users\Admin\AppData\Local\Temp\pyservice92.exe"2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell.exe -NoProfile -ExecutionPolicy Bypass -Command "$script = [ScriptBlock]::Create(($input | Out-String)); & $script .\def.ps1 C:\\"3⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Roaming\Microsoft\WindowsApps\Cache\Runtime\libbridge4253_4937.exe"C:\Users\Admin\AppData\Roaming\Microsoft\WindowsApps\Cache\Runtime\libbridge4253_4937.exe"3⤵
- Suspicious use of NtCreateUserProcessOtherParentProcess
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Reads the TCP/IP host and domain name from the registry
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\notepad.exe"C:\Windows\system32\notepad.exe" --encargs 6c490906002010084402241208054e724440064e310b02054029051e01182011011d40311602535a75574d441b615c5e335d021028013b70283a2205363e38062504571e21592c3637315c35022011252703030a233b2a1c305670012e2f2f02290a0f1f04510939012e003b312c3137342259143d2311560f37062c0836130c1957063c193b38703e3f1023064440194e71565c584e6c4919051d6149400a1e34490008166c10051b0b20001e4406280a195456714440084e331c42592⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
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C:\Windows\system32\notepad.exe"C:\Windows\system32\notepad.exe" --encargs 6c490906002010084402241208054e724440064e310b02054029051e01182011011d40311602535a75574d441b615c5e335d021028013b70283a2205363e38062504571e21592c3637315c35022011252703030a233b2a1c305670012e2f2f02290a0f1f04510939012e003b312c3137342259143d2311560f37062c0836130c1957063c193b38703e3f1023064440194e71565c584e6c4919051d6149400a1e34490008166c10051b0b20001e4406280a195456714440084e331c42592⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
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C:\Users\Admin\AppData\Roaming\Microsoft\WindowsApps\Cache\pyservice92.exeC:\Users\Admin\AppData\Roaming\Microsoft\WindowsApps\Cache\pyservice92.exe1⤵
- Executes dropped EXE
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
libbridge4253_4937.exe
pyservice92.exe
memory/2136-41-0x00007FF7B0920000-0x00007FF7B117A000-memory.dmp
memory/2136-39-0x00007FF7B0920000-0x00007FF7B117A000-memory.dmp
memory/2136-49-0x00007FF7B0920000-0x00007FF7B117A000-memory.dmp
memory/2136-47-0x00007FF7B0920000-0x00007FF7B117A000-memory.dmp
memory/2136-45-0x00007FF7B0920000-0x00007FF7B117A000-memory.dmp
memory/2136-43-0x00007FF7B0920000-0x00007FF7B117A000-memory.dmp
memory/2136-53-0x00007FF7B0920000-0x00007FF7B117A000-memory.dmp
memory/2136-51-0x00007FF7B0920000-0x00007FF7B117A000-memory.dmp
memory/2136-37-0x00007FF7B0920000-0x00007FF7B117A000-memory.dmp
memory/2136-35-0x00007FF7B0920000-0x00007FF7B117A000-memory.dmp
memory/2136-33-0x00007FF7B0920000-0x00007FF7B117A000-memory.dmp
memory/2136-55-0x00007FF7B0920000-0x00007FF7B117A000-memory.dmp
memory/4452-29-0x0000028742220000-0x0000028742240000-memory.dmp
memory/4452-30-0x00007FF6D0FE0000-0x00007FF6D183A000-memory.dmp
memory/4660-11-0x00007FFC52580000-0x00007FFC52F24000-memory.dmp
memory/4660-13-0x00007FFC52580000-0x00007FFC52F24000-memory.dmp
memory/4660-21-0x00007FFC52580000-0x00007FFC52F24000-memory.dmp
memory/4660-18-0x00007FFC52580000-0x00007FFC52F24000-memory.dmp
memory/4660-17-0x00007FFC52580000-0x00007FFC52F24000-memory.dmp
memory/4660-16-0x00007FFC52580000-0x00007FFC52F24000-memory.dmp
memory/4660-15-0x00007FFC52580000-0x00007FFC52F24000-memory.dmp
memory/4660-1-0x00007FFC52580000-0x00007FFC52F24000-memory.dmp
memory/4660-14-0x00007FFC52580000-0x00007FFC52F24000-memory.dmp
memory/4660-19-0x00007FFC52580000-0x00007FFC52F24000-memory.dmp
memory/4660-12-0x00007FFC52580000-0x00007FFC52F24000-memory.dmp
memory/4660-0-0x00007FFC5270F000-0x00007FFC52710000-memory.dmp
memory/4660-10-0x00007FFC52580000-0x00007FFC52F24000-memory.dmp
memory/4660-9-0x00007FFC52580000-0x00007FFC52F24000-memory.dmp
memory/4660-8-0x00007FFC52580000-0x00007FFC52F24000-memory.dmp
memory/4660-7-0x00007FFC52580000-0x00007FFC52F24000-memory.dmp
memory/4660-6-0x00007FFC52580000-0x00007FFC52F24000-memory.dmp
memory/4660-5-0x00007FFC52580000-0x00007FFC52F24000-memory.dmp
memory/4660-4-0x000001D9AFAF0000-0x000001D9AFB12000-memory.dmp
memory/5880-32-0x00007FF6C4AF0000-0x00007FF6C52E8000-memory.dmp