Analysis
- max time kernel
151s - max time network
157s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
- submitted
27/10/2026, 16:09
General
- Target Murkfall-Setup.exe
- Size 30.2MB
- Sample261027-tl83jasz2m
- SHA256 7d31a69ad96b6fbe5651fe278f01fcd5f868d26601299ce120e402742fd7d2be
Malware Config
Signatures
- Executes dropped EXE 2 IoCs
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- 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.
- System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Inno Setup is an open-source installation builder for Windows applications. 3 IoCs
Inno Setup installer
- Modifies registry class 1 IoCs
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious use of FindShellTrayWindow 2 IoCs
- Suspicious use of SetWindowsHookEx 4 IoCs
- Suspicious use of WriteProcessMemory 2 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Murkfall-Setup.exe"C:\Users\Admin\AppData\Local\Temp\Murkfall-Setup.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\is-1LKZHWQW2V.tmp\Murkfall-Setup.tmp"C:\Users\Admin\AppData\Local\Temp\is-1LKZHWQW2V.tmp\Murkfall-Setup.tmp" /SL5="$4011A,30444255,863744,C:\Users\Admin\AppData\Local\Temp\Murkfall-Setup.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Programs\Murkfall\Murkfall Launcher.exe"C:\Users\Admin\AppData\Local\Programs\Murkfall\Murkfall Launcher.exe"3⤵
- Executes dropped EXE
- Reads the TCP/IP host and domain name from the registry
- Modifies registry class
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k GPSvcGroup1⤵
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
CREDITS.txt
Murkfall Launcher.pck
unins000.exe
Murkfall-Setup.tmp
memory/1764-52-0x00000000008C0000-0x0000000000CFD000-memory.dmp
memory/1764-9-0x00000000008C0000-0x0000000000CFD000-memory.dmp
memory/1764-12-0x00000000008C0000-0x0000000000CFD000-memory.dmp
memory/1764-10-0x0000000001060000-0x0000000001061000-memory.dmp
memory/1764-6-0x0000000001060000-0x0000000001061000-memory.dmp
memory/4284-93-0x00007FF7C3620000-0x00007FF7C4620000-memory.dmp
memory/6040-8-0x0000000000F10000-0x0000000000FF1000-memory.dmp
memory/6040-1-0x0000000000F10000-0x0000000000FF1000-memory.dmp
memory/6040-62-0x0000000000F10000-0x0000000000FF1000-memory.dmp