Analysis
- max time kernel
299s - max time network
324s - platform
windows10-ltsc_2021_x64 - resource
win10ltsc2021-20260911-es - resource tags
- submitted
23/10/2026, 23:46
General
- Target Oneshot/LAUNCHER.exe
- Size 227KB
- Sample261023-3sr72adh38
- SHA256 3dad541c5fcdbc09b1c079e6c92837632c649d78084fdbab2bd2f1ce25ec2c5d
Malware Config
Signatures
- 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.
- 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.
- Drops file in Windows directory 1 IoCs
- System Location Discovery: System Language Discovery 1 TTPs 4 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.
- Modifies registry class 1 IoCs
- Suspicious behavior: EnumeratesProcesses 18 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious use of SetWindowsHookEx 3 IoCs
- Suspicious use of WriteProcessMemory 3 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Oneshot\LAUNCHER.exe"C:\Users\Admin\AppData\Local\Temp\Oneshot\LAUNCHER.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\Oneshot\steamshim.exe"C:\Users\Admin\AppData\Local\Temp\Oneshot\steamshim.exe"2⤵
- Writes to the Master Boot Record (MBR)
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exe"C:\Windows\system32\rundll32.exe" "C:\Users\Admin\AppData\Local\Temp\Oneshot\SmartSteamEmu.dll",InitSSE3⤵
- Writes to the Master Boot Record (MBR)
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
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C:\Users\Admin\AppData\Local\Temp\Oneshot\oneshot.exe".\oneshot.exe"3⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
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C:\Windows\system32\OpenWith.exeC:\Windows\system32\OpenWith.exe -Embedding1⤵
- Suspicious use of SetWindowsHookEx
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k BcastDVRUserService -s BcastDVRUserService1⤵
- Checks processor information in registry
- Modifies registry class
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C:\Windows\system32\OpenWith.exeC:\Windows\system32\OpenWith.exe -Embedding1⤵
- Suspicious use of SetWindowsHookEx
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
desktop.ini
memory/3552-28-0x000000006FE40000-0x00000000703DF000-memory.dmp
memory/3552-1-0x0000000000400000-0x0000000000422000-memory.dmp
memory/3552-60-0x000000006FE40000-0x00000000703DF000-memory.dmp
memory/3552-59-0x000000006D0C0000-0x000000006D13A000-memory.dmp
memory/3552-61-0x0000000000400000-0x0000000000422000-memory.dmp
memory/3552-0-0x0000000000408000-0x0000000000409000-memory.dmp
memory/3552-26-0x0000000000400000-0x0000000000422000-memory.dmp
memory/3552-27-0x000000006D0C0000-0x000000006D13A000-memory.dmp
memory/4468-49-0x0000000063EC0000-0x0000000063F74000-memory.dmp
memory/4468-42-0x0000000069C00000-0x0000000069D23000-memory.dmp
memory/4468-30-0x000000006B800000-0x000000006B88E000-memory.dmp
memory/4468-46-0x0000000067680000-0x000000006790D000-memory.dmp
memory/4468-51-0x00000000025A0000-0x0000000002924000-memory.dmp
memory/4468-55-0x0000000069340000-0x00000000693F0000-memory.dmp
memory/4468-56-0x0000000066200000-0x0000000066343000-memory.dmp
memory/4468-54-0x0000000061EC0000-0x0000000061F45000-memory.dmp
memory/4468-52-0x0000000002930000-0x0000000007F0F000-memory.dmp
memory/4468-53-0x00000000687C0000-0x0000000068AEC000-memory.dmp
memory/4468-50-0x0000000061980000-0x00000000619C2000-memory.dmp
memory/4468-6-0x0000000002930000-0x0000000007F0F000-memory.dmp
memory/4468-48-0x0000000070880000-0x00000000708A5000-memory.dmp
memory/4468-47-0x000000006D740000-0x000000006D788000-memory.dmp
memory/4468-45-0x000000006F740000-0x000000006F917000-memory.dmp
memory/4468-41-0x000000006FE40000-0x00000000703DF000-memory.dmp
memory/4468-43-0x0000000068D40000-0x0000000068E1B000-memory.dmp
memory/4468-29-0x0000000000400000-0x000000000051B000-memory.dmp
memory/4468-40-0x000000006D0C0000-0x000000006D13A000-memory.dmp
memory/4468-39-0x0000000063080000-0x00000000630A1000-memory.dmp
memory/4468-38-0x000000006B5C0000-0x000000006B5E2000-memory.dmp
memory/4468-37-0x000000006AC00000-0x000000006AC3B000-memory.dmp
memory/4468-36-0x0000000065500000-0x000000006598A000-memory.dmp
memory/4468-35-0x0000000070E80000-0x0000000070F40000-memory.dmp
memory/4468-34-0x000000006FAC0000-0x000000006FB33000-memory.dmp
memory/4468-33-0x0000000071200000-0x000000007122F000-memory.dmp
memory/4468-32-0x000000006AA80000-0x000000006AAFC000-memory.dmp
memory/4468-31-0x000000006C940000-0x000000006CDAD000-memory.dmp
memory/4468-44-0x00000000690C0000-0x000000006921A000-memory.dmp
memory/4468-8-0x000000006FAC0000-0x000000006FB33000-memory.dmp
memory/4468-9-0x0000000000400000-0x000000000051B000-memory.dmp
memory/4468-4-0x00000000025A0000-0x0000000002924000-memory.dmp
memory/5056-62-0x0000000000630000-0x0000000000640000-memory.dmp