Analysis
- user interaction
yes - max time kernel
53s - max time network
50s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
- submitted
09/08/2026, 15:21
General
- Target Nocturn.exe
- Size 1.1MB
- Sample260809-srkrfs1akb
- SHA256 9531450c4b88ec8376fb10a3a4de46f42429afb0f55454fe39bd4f27597f30a3
Malware Config
Signatures
- Downloads MZ/PE file 2 IoCs
- Contacts third-party web service commonly abused for C2 1 TTPs 3 IoCs
Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.
- 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.
- Modifies registry class 1 IoCs
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of SetWindowsHookEx 7 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Nocturn.exe"C:\Users\Admin\AppData\Local\Temp\Nocturn.exe"1⤵
- Downloads MZ/PE file
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
C:\Windows\system32\OpenWith.exeC:\Windows\system32\OpenWith.exe -Embedding1⤵
- 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\OpenWith.exeC:\Windows\system32\OpenWith.exe -Embedding1⤵
- Suspicious use of SetWindowsHookEx
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C:\Windows\system32\OpenWith.exeC:\Windows\system32\OpenWith.exe -Embedding1⤵
- Suspicious use of SetWindowsHookEx
-
C:\Windows\system32\OpenWith.exeC:\Windows\system32\OpenWith.exe -Embedding1⤵
- Suspicious use of SetWindowsHookEx
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C:\Windows\system32\OpenWith.exeC:\Windows\system32\OpenWith.exe -Embedding1⤵
- Suspicious use of SetWindowsHookEx
-
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
memory/4612-0-0x0000000000E80000-0x0000000000F94000-memory.dmp
memory/4612-1-0x0000000005F60000-0x0000000006504000-memory.dmp
memory/4612-2-0x00000000059B0000-0x0000000005A42000-memory.dmp
memory/4612-5-0x0000000005C10000-0x0000000005C20000-memory.dmp
memory/4612-6-0x0000000005B40000-0x0000000005B4A000-memory.dmp
memory/4612-8-0x0000000005C10000-0x0000000005C20000-memory.dmp
memory/4612-9-0x0000000005C10000-0x0000000005C20000-memory.dmp
memory/4612-10-0x0000000005C10000-0x0000000005C20000-memory.dmp
memory/4612-11-0x0000000005C10000-0x0000000005C20000-memory.dmp