Analysis
- max time kernel
149s - max time network
150s - platform
windows11-21h2_x64 - resource
win11-20260130-en - resource tags
- submitted
24/04/2026, 08:10
General
- Target 3f742821e0c16813690060914268d636a0a18863519656ce56f293357a802610.exe
- Size 1.3MB
- Sample260424-j2xpbsbz2w
- SHA256 3f742821e0c16813690060914268d636a0a18863519656ce56f293357a802610
Malware Config
Signatures
- Family: FlyAgent
FlyAgent is a backdoor written in C++.
- Detects FlyAgent Backdoor 4 IoCs
- Deletes itself 1 IoCs
- Executes dropped EXE 3 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 8 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Modifies registry class 5 IoCs
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious behavior: RenamesItself 1 IoCs
- Suspicious use of SetWindowsHookEx 8 IoCs
- Suspicious use of WriteProcessMemory 7 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\3f742821e0c16813690060914268d636a0a18863519656ce56f293357a802610.exe"C:\Users\Admin\AppData\Local\Temp\3f742821e0c16813690060914268d636a0a18863519656ce56f293357a802610.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
- 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
- Suspicious use of SetWindowsHookEx
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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
- Suspicious use of SetWindowsHookEx
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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
svchcst.exe
svchcst.exe
memory/3152-8-0x0000000000400000-0x0000000000551000-memory.dmp
memory/3152-9-0x0000000002520000-0x0000000002584000-memory.dmp
memory/3152-21-0x0000000002520000-0x0000000002584000-memory.dmp
memory/3152-20-0x0000000000400000-0x0000000000551000-memory.dmp
memory/3264-47-0x00000000023D0000-0x0000000002434000-memory.dmp
memory/3556-38-0x0000000000B10000-0x0000000000B74000-memory.dmp
memory/3584-25-0x0000000002E20000-0x0000000002E31000-memory.dmp
memory/3584-10-0x0000000002070000-0x00000000020D4000-memory.dmp
memory/3584-11-0x0000000002E20000-0x0000000002E31000-memory.dmp
memory/3884-13-0x0000000003050000-0x0000000003061000-memory.dmp
memory/3884-12-0x00000000023C0000-0x0000000002424000-memory.dmp
memory/4044-44-0x00000000023A0000-0x0000000002404000-memory.dmp
memory/4128-46-0x0000000005CF0000-0x0000000005D58000-memory.dmp
memory/4128-45-0x0000000002F70000-0x0000000002FD4000-memory.dmp
memory/4856-43-0x00000000057F0000-0x0000000005858000-memory.dmp
memory/4856-42-0x0000000002AB0000-0x0000000002B14000-memory.dmp