Analysis
- max time kernel
149s - max time network
152s - platform
windows10-2004_x64 - resource
win10v2004-20260911-en - resource tags
- submitted
02/11/2026, 12:14
General
- Target pyservice92.exe
- Size 6.3MB
- Sample261102-petbaas1b1
- 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 17 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 5 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.EXEC:\Windows\Explorer.EXE1⤵
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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\webupdater2891_d0ff.exe"C:\Users\Admin\AppData\Roaming\Microsoft\WindowsApps\Cache\Runtime\webupdater2891_d0ff.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
__PSScriptPolicyTest_b5qpxqej.yu4.ps1
webupdater2891_d0ff.exe
pyservice92.exe
memory/3176-21-0x00007FF68E780000-0x00007FF68EFDA000-memory.dmp
memory/3176-20-0x00000173EB2F0000-0x00000173EB310000-memory.dmp
memory/4020-24-0x00007FF67FC60000-0x00007FF6804BA000-memory.dmp
memory/4020-40-0x00007FF67FC60000-0x00007FF6804BA000-memory.dmp
memory/4020-48-0x00007FF67FC60000-0x00007FF6804BA000-memory.dmp
memory/4020-46-0x00007FF67FC60000-0x00007FF6804BA000-memory.dmp
memory/4020-44-0x00007FF67FC60000-0x00007FF6804BA000-memory.dmp
memory/4020-42-0x00007FF67FC60000-0x00007FF6804BA000-memory.dmp
memory/4020-26-0x00007FF67FC60000-0x00007FF6804BA000-memory.dmp
memory/4020-28-0x00007FF67FC60000-0x00007FF6804BA000-memory.dmp
memory/4020-30-0x00007FF67FC60000-0x00007FF6804BA000-memory.dmp
memory/4020-32-0x00007FF67FC60000-0x00007FF6804BA000-memory.dmp
memory/4020-34-0x00007FF67FC60000-0x00007FF6804BA000-memory.dmp
memory/4020-36-0x00007FF67FC60000-0x00007FF6804BA000-memory.dmp
memory/4020-38-0x00007FF67FC60000-0x00007FF6804BA000-memory.dmp
memory/4436-10-0x000002B03C0D0000-0x000002B03C0E0000-memory.dmp
memory/4436-0-0x000002B03C0D0000-0x000002B03C0E0000-memory.dmp
memory/4436-1-0x000002B03C0D0000-0x000002B03C0E0000-memory.dmp
memory/4436-7-0x000002B023E40000-0x000002B023E62000-memory.dmp
memory/6064-23-0x00007FF749BE0000-0x00007FF74A3D8000-memory.dmp