Analysis
- max time kernel
29s - max time network
154s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
- submitted
02/10/2026, 04:17
General
- Target 2026-10-01_bd18085b577c1e10405cea3cfd89fbf1_amadey_cobalt-strike_elex_luca-stealer_njrat_smoke-loader.exe
- Size 289KB
- Sample261002-ewrhxatz4l
- SHA256 a1ebcead7b5b0ad86c8b74a12e2d94da3ba063fe370f3f1e5f519f4f27de35bc
Malware Config
Extracted
-
Protocol
ftp
-
Host
ftp.hfgjjkrewjk.com
-
Port
21
-
Username
123
-
Password
123
Signatures
- Family: xmrig
XMRig is a high performance, open source, cross platform CPU/GPU miner.
- Contacts a large (16135) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
- Creates a large amount of network flows 1 TTPs
This may indicate a network scan to discover remotely running services.
- Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 2 IoCs
- UPX dump on OEP (original entry point) 21 IoCs
- XMRig Miner payload 22 IoCs
- Downloads MZ/PE file 1 IoCs
- Checks BIOS information in registry 2 TTPs 4 IoCs
BIOS information is often read in order to detect sandboxing environments.
- Executes a file named after a Windows system binary 1 TTPs 2 IoCs
The file runs from a user directory while carrying the name of an executable that normally only exists in System32.
- Executes dropped EXE 5 IoCs
- Checks whether UAC is enabled 1 TTPs 2 IoCs
- Writes to the Master Boot Record (MBR) 1 TTPs 2 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
- Suspicious use of NtSetInformationThreadHideFromDebugger 1 TTPs 2 IoCs
- UPX packed file 22 IoCs
Detects executables packed with UPX/modified UPX open source packer.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Executes a command shell one-liner 1 TTPs 2 IoCs
Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.
- Reads the TCP/IP host and domain name from the registry 1 TTPs 8 IoCs
The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.
- System Location Discovery: System Language Discovery 1 TTPs 5 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
- GoLang User-Agent 1 IoCs
Uses default user-agent string defined by GoLang HTTP packages.
- Modifies registry class 2 IoCs
- Scheduled Task/Job: Scheduled Task 1 TTPs 3 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious use of AdjustPrivilegeToken 4 IoCs
- Suspicious use of FindShellTrayWindow 1 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 6 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
-
C:\Users\Admin\AppData\Local\Temp\2026-10-01_bd18085b577c1e10405cea3cfd89fbf1_amadey_cobalt-strike_elex_luca-stealer_njrat_smoke-loader.exe"C:\Users\Admin\AppData\Local\Temp\2026-10-01_bd18085b577c1e10405cea3cfd89fbf1_amadey_cobalt-strike_elex_luca-stealer_njrat_smoke-loader.exe"1⤵
- Executes a file named after a Windows system binary
- Reads the TCP/IP host and domain name from the registry
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Modifies registry class
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\MoUsoCoreWorker.exe"C:\Users\Admin\AppData\Local\Temp\MoUsoCoreWorker.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
-
-
C:\Users\Admin\AppData\Local\Temp\NisSrv.exe"C:\Users\Admin\AppData\Local\Temp\NisSrv.exe"2⤵
- Downloads MZ/PE file
- Executes dropped EXE
- Reads the TCP/IP host and domain name from the registry
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\system32\schtasks.exeschtasks /create /tn MicrosoftEdgeUpdateTaskMachineUA{CEC15D9B-F4BB-446A-B6E1-C61E74B016A2} /tr \"C:\Users\Admin\AppData\Local\Temp\NisSrv.exe\" /sc daily /st 04:00 /f /ru SYSTEM /rl HIGHEST3⤵
- Scheduled Task/Job: Scheduled Task
-
-
-
C:\Users\Admin\AppData\Local\Temp\SearchIndexer.exe"C:\Users\Admin\AppData\Local\Temp\SearchIndexer.exe"2⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Executes a file named after a Windows system binary
- Executes dropped EXE
- Checks whether UAC is enabled
- Writes to the Master Boot Record (MBR)
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Reads the TCP/IP host and domain name from the registry
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
-
-
C:\Windows\SysWOW64\cmd.execmd.exe /C schtasks.exe /Create /TN "MicrosoftEdgeUpdateTaskMachineCore{4C33CE3F-7722-4257-AF83-351A4911C159}" /TR "\"C:\Users\Admin\AppData\Local\Temp\2026-10-01_bd18085b577c1e10405cea3cfd89fbf1_amadey_cobalt-strike_elex_luca-stealer_njrat_smoke-loader.exe\"" /SC DAILY /ST 01:00 /F /RU "SYSTEM"2⤵
- Executes a command shell one-liner
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\schtasks.exeschtasks.exe /Create /TN "MicrosoftEdgeUpdateTaskMachineCore{4C33CE3F-7722-4257-AF83-351A4911C159}" /TR "\"C:\Users\Admin\AppData\Local\Temp\2026-10-01_bd18085b577c1e10405cea3cfd89fbf1_amadey_cobalt-strike_elex_luca-stealer_njrat_smoke-loader.exe\"" /SC DAILY /ST 01:00 /F /RU "SYSTEM"3⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
-
-
-
C:\Windows\system32\OpenWith.exeC:\Windows\system32\OpenWith.exe -Embedding1⤵
- Modifies registry class
- Suspicious use of SetWindowsHookEx
-
C:\Users\Admin\AppData\Local\Temp\NisSrv.exe"C:\Users\Admin\AppData\Local\Temp\NisSrv.exe"1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
-
C:\Users\Admin\AppData\Local\Temp\SearchIndexer.exeC:\Users\Admin\AppData\Local\Temp\SearchIndexer.exe1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Executes dropped EXE
- Checks whether UAC is enabled
- Writes to the Master Boot Record (MBR)
- Suspicious use of NtSetInformationThreadHideFromDebugger
-
C:\Users\Admin\AppData\Local\Temp\2026-10-01_bd18085b577c1e10405cea3cfd89fbf1_amadey_cobalt-strike_elex_luca-stealer_njrat_smoke-loader.exe"C:\Users\Admin\AppData\Local\Temp\2026-10-01_bd18085b577c1e10405cea3cfd89fbf1_amadey_cobalt-strike_elex_luca-stealer_njrat_smoke-loader.exe"1⤵
- Reads the TCP/IP host and domain name from the registry
- System Location Discovery: System Language Discovery
-
C:\Users\Admin\AppData\Local\Temp\MoUsoCoreWorker.exe"C:\Users\Admin\AppData\Local\Temp\MoUsoCoreWorker.exe"2⤵
-
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C:\Windows\SysWOW64\cmd.execmd.exe /C schtasks.exe /Create /TN "MicrosoftEdgeUpdateTaskMachineCore{4C33CE3F-7722-4257-AF83-351A4911C159}" /TR "\"C:\Users\Admin\AppData\Local\Temp\2026-10-01_bd18085b577c1e10405cea3cfd89fbf1_amadey_cobalt-strike_elex_luca-stealer_njrat_smoke-loader.exe\"" /SC DAILY /ST 01:00 /F /RU "SYSTEM"2⤵
- Executes a command shell one-liner
-
C:\Windows\SysWOW64\schtasks.exeschtasks.exe /Create /TN "MicrosoftEdgeUpdateTaskMachineCore{4C33CE3F-7722-4257-AF83-351A4911C159}" /TR "\"C:\Users\Admin\AppData\Local\Temp\2026-10-01_bd18085b577c1e10405cea3cfd89fbf1_amadey_cobalt-strike_elex_luca-stealer_njrat_smoke-loader.exe\"" /SC DAILY /ST 01:00 /F /RU "SYSTEM"3⤵
- Scheduled Task/Job: Scheduled Task
-
-
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C:\Windows\system32\OpenWith.exeC:\Windows\system32\OpenWith.exe -Embedding1⤵
Network
MITRE ATT&CK Enterprise v16
Execution
Command and Scripting Interpreter
1Windows Command Shell
1Scheduled Task/Job
1Scheduled Task
1Persistence
Pre-OS Boot
1Bootkit
1Scheduled Task/Job
1Scheduled Task
1Defense Evasion
Debugger Evasion
1Masquerading
1Match Legitimate Name or Location
1Pre-OS Boot
1Bootkit
1Virtualization/Sandbox Evasion
1Replay Monitor
Loading Replay Monitor...
Downloads
mntemp
MoUsoCoreWorker.exe
NisSrv.exe
README.txt
SearchIndexer.exe
config.json
memory/1480-106-0x00000000006C0000-0x0000000000711000-memory.dmp
memory/3076-93-0x00007FF76F960000-0x00007FF774076000-memory.dmp
memory/3464-94-0x0000000140000000-0x00000001412B3000-memory.dmp
memory/3464-126-0x0000000140000000-0x00000001412B3000-memory.dmp
memory/3464-68-0x0000000000E20000-0x0000000000E40000-memory.dmp
memory/3464-66-0x0000000140000000-0x00000001412B3000-memory.dmp
memory/3464-67-0x0000000140000000-0x00000001412B3000-memory.dmp
memory/3464-64-0x0000000140000000-0x00000001412B3000-memory.dmp
memory/3464-124-0x0000000140000000-0x00000001412B3000-memory.dmp
memory/3464-122-0x0000000140000000-0x00000001412B3000-memory.dmp
memory/3464-120-0x0000000140000000-0x00000001412B3000-memory.dmp
memory/3464-132-0x0000000140000000-0x00000001412B3000-memory.dmp
memory/3464-118-0x0000000140000000-0x00000001412B3000-memory.dmp
memory/3464-138-0x0000000140000000-0x00000001412B3000-memory.dmp
memory/3464-65-0x0000000140000000-0x00000001412B3000-memory.dmp
memory/3464-128-0x0000000140000000-0x00000001412B3000-memory.dmp
memory/3464-116-0x0000000140000000-0x00000001412B3000-memory.dmp
memory/3464-63-0x0000000140000000-0x00000001412B3000-memory.dmp
memory/3464-130-0x0000000140000000-0x00000001412B3000-memory.dmp
memory/3464-136-0x0000000140000000-0x00000001412B3000-memory.dmp
memory/3464-134-0x0000000140000000-0x00000001412B3000-memory.dmp
memory/4352-85-0x0000000140000000-0x00000001412B3000-memory.dmp
memory/4352-91-0x0000000140000000-0x00000001412B3000-memory.dmp
memory/4352-86-0x0000000140000000-0x00000001412B3000-memory.dmp
memory/4352-87-0x0000000140000000-0x00000001412B3000-memory.dmp
memory/4352-83-0x0000000140000000-0x00000001412B3000-memory.dmp
memory/4352-84-0x0000000140000000-0x00000001412B3000-memory.dmp
memory/4740-92-0x00000000008D0000-0x000000000091C000-memory.dmp
memory/4988-0-0x00000000008D0000-0x000000000091C000-memory.dmp
memory/5344-89-0x00007FF76F960000-0x00007FF774076000-memory.dmp
memory/5344-131-0x00007FF76F960000-0x00007FF774076000-memory.dmp
memory/5344-121-0x00007FF76F960000-0x00007FF774076000-memory.dmp
memory/5344-125-0x00007FF76F960000-0x00007FF774076000-memory.dmp
memory/5344-119-0x00007FF76F960000-0x00007FF774076000-memory.dmp
memory/5344-127-0x00007FF76F960000-0x00007FF774076000-memory.dmp
memory/5344-117-0x00007FF76F960000-0x00007FF774076000-memory.dmp
memory/5344-129-0x00007FF76F960000-0x00007FF774076000-memory.dmp
memory/5344-139-0x00007FF76F960000-0x00007FF774076000-memory.dmp
memory/5344-123-0x00007FF76F960000-0x00007FF774076000-memory.dmp
memory/5344-88-0x00007FF76F960000-0x00007FF774076000-memory.dmp
memory/5344-133-0x00007FF76F960000-0x00007FF774076000-memory.dmp
memory/5344-23-0x00007FF76F960000-0x00007FF774076000-memory.dmp
memory/5344-135-0x00007FF76F960000-0x00007FF774076000-memory.dmp
memory/5344-95-0x00007FF76F960000-0x00007FF774076000-memory.dmp
memory/5344-137-0x00007FF76F960000-0x00007FF774076000-memory.dmp
memory/5772-12-0x00000000004B0000-0x0000000000501000-memory.dmp
memory/5772-11-0x00000000004B0000-0x0000000000501000-memory.dmp