Analysis
- max time kernel
124s - max time network
150s - platform
windows11-21h2_x64 - resource
win11-20260130-en - resource tags
- submitted
21/04/2026, 22:55
General
- Target e89f3e8a1b1eaec073c43b2bbb348829cecd85f13bd94db5f918ad549e5bc92a.exe
- Size 1.3MB
- Sample260421-2wcfbadv5k
- SHA256 e89f3e8a1b1eaec073c43b2bbb348829cecd85f13bd94db5f918ad549e5bc92a
Malware Config
Signatures
- Family: FlyAgent
FlyAgent is a backdoor written in C++.
- Detects FlyAgent Backdoor 4 IoCs
- Deletes itself 1 IoCs
- Executes dropped EXE 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 6 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Modifies registry class 4 IoCs
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious behavior: RenamesItself 1 IoCs
- Suspicious use of SetWindowsHookEx 4 IoCs
- Suspicious use of WriteProcessMemory 5 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\e89f3e8a1b1eaec073c43b2bbb348829cecd85f13bd94db5f918ad549e5bc92a.exe"C:\Users\Admin\AppData\Local\Temp\e89f3e8a1b1eaec073c43b2bbb348829cecd85f13bd94db5f918ad549e5bc92a.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
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C:\Users\Admin\AppData\Roaming\Microsoft\svchcst.exe"C:\Users\Admin\AppData\Roaming\Microsoft\svchcst.exe"5⤵
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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
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C:\Users\Admin\AppData\Roaming\Microsoft\svchcst.exe"C:\Users\Admin\AppData\Roaming\Microsoft\svchcst.exe"5⤵
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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
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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/2372-71-0x00000000009B0000-0x0000000000A2C000-memory.dmp
memory/3264-66-0x0000000005950000-0x00000000059D8000-memory.dmp
memory/3264-67-0x00000000059E0000-0x00000000059FD000-memory.dmp
memory/3264-37-0x0000000001320000-0x000000000139C000-memory.dmp
memory/3264-31-0x0000000001320000-0x000000000139C000-memory.dmp
memory/4088-14-0x0000000000400000-0x0000000000551000-memory.dmp
memory/4088-11-0x0000000000B10000-0x0000000000B8C000-memory.dmp
memory/4088-10-0x0000000000400000-0x0000000000551000-memory.dmp
memory/4972-19-0x0000000001060000-0x00000000010DC000-memory.dmp
memory/4972-13-0x0000000001060000-0x00000000010DC000-memory.dmp
memory/4992-18-0x0000000000B20000-0x0000000000B9C000-memory.dmp
memory/4992-12-0x0000000000B20000-0x0000000000B9C000-memory.dmp
memory/5068-72-0x0000000000AD0000-0x0000000000B4C000-memory.dmp
memory/5160-32-0x00000000007C0000-0x000000000083C000-memory.dmp
memory/5160-38-0x00000000007C0000-0x000000000083C000-memory.dmp
memory/5160-70-0x0000000004E90000-0x0000000004EAD000-memory.dmp
memory/5160-69-0x0000000004E00000-0x0000000004E88000-memory.dmp
memory/6136-30-0x0000000000790000-0x000000000080C000-memory.dmp