Analysis
- max time kernel
120s - max time network
152s - platform
windows11-21h2_x64 - resource
win11-20260130-en - resource tags
- submitted
18/04/2026, 09:05
General
- Target c19307abcfbfaa14ba9069191eb2deb37ea4b770bccc18cb7f924951a6a3b317.exe
- Size 1.1MB
- Sample260418-k2jcdaby2y
- SHA256 c19307abcfbfaa14ba9069191eb2deb37ea4b770bccc18cb7f924951a6a3b317
Malware Config
Signatures
- Family: FlyAgent
FlyAgent is a backdoor written in C++.
- Detects FlyAgent Backdoor 9 IoCs
- Deletes itself 1 IoCs
- Executes dropped EXE 2 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 9 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Modifies registry class 6 IoCs
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious behavior: RenamesItself 1 IoCs
- Suspicious use of SetWindowsHookEx 6 IoCs
- Suspicious use of WriteProcessMemory 8 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\c19307abcfbfaa14ba9069191eb2deb37ea4b770bccc18cb7f924951a6a3b317.exe"C:\Users\Admin\AppData\Local\Temp\c19307abcfbfaa14ba9069191eb2deb37ea4b770bccc18cb7f924951a6a3b317.exe"1⤵
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: RenamesItself
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\Microsoft\VBS3.vbs"2⤵
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\Microsoft\svchcst.exe"C:\Users\Admin\AppData\Roaming\Microsoft\svchcst.exe"3⤵
- Deletes itself
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\Microsoft\VBS3.vbs"4⤵
- System Location Discovery: System Language Discovery
- Modifies registry class
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C:\Windows\SysWOW64\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\Microsoft\VBS3.vbs"4⤵
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\Microsoft\svchcst.exe"C:\Users\Admin\AppData\Roaming\Microsoft\svchcst.exe"5⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\Microsoft\VBS3.vbs"6⤵
- System Location Discovery: System Language Discovery
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C:\Windows\SysWOW64\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\Microsoft\VBS3.vbs"6⤵
- System Location Discovery: System Language Discovery
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C:\Windows\SysWOW64\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\Microsoft\VBS3.vbs"2⤵
- System Location Discovery: System Language Discovery
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Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
Config.ini
VBS3.vbs
VBS3.vbs
VBS3.vbs
svchcst.exe
svchcst.exe
svchcst.exe
memory/1140-38-0x0000000005CB0000-0x0000000005CFB000-memory.dmp
memory/1140-39-0x0000000005CA0000-0x0000000005CA8000-memory.dmp
memory/2444-40-0x0000000005AD0000-0x0000000005B1B000-memory.dmp
memory/2716-0-0x0000000000400000-0x000000000055F000-memory.dmp
memory/2716-21-0x0000000000400000-0x000000000055F000-memory.dmp
memory/2716-11-0x0000000000400000-0x000000000055F000-memory.dmp
memory/4100-35-0x0000000000400000-0x000000000055F000-memory.dmp
memory/4100-34-0x0000000000400000-0x000000000055F000-memory.dmp
memory/4976-50-0x0000000000400000-0x000000000055F000-memory.dmp