Analysis
- max time kernel
60s - max time network
151s - platform
windows11-21h2_x64 - resource
win11-20260130-en - resource tags
- submitted
21/04/2026, 22:11
General
- Target 1dcd7e2e68be1edb145e77c6fb2a4ced167e8241de5da0caf03f19b23eb4faae.exe
- Size 1.3MB
- Sample260421-131wtacz2n
- SHA256 1dcd7e2e68be1edb145e77c6fb2a4ced167e8241de5da0caf03f19b23eb4faae
Malware Config
Signatures
- Family: FlyAgent
FlyAgent is a backdoor written in C++.
- Detects FlyAgent Backdoor 5 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 11 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Modifies registry class 7 IoCs
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious behavior: RenamesItself 1 IoCs
- Suspicious use of SetWindowsHookEx 8 IoCs
- Suspicious use of WriteProcessMemory 10 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\1dcd7e2e68be1edb145e77c6fb2a4ced167e8241de5da0caf03f19b23eb4faae.exe"C:\Users\Admin\AppData\Local\Temp\1dcd7e2e68be1edb145e77c6fb2a4ced167e8241de5da0caf03f19b23eb4faae.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
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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
- 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:\Users\Admin\AppData\Roaming\Microsoft\svchcst.exe"C:\Users\Admin\AppData\Roaming\Microsoft\svchcst.exe"7⤵
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C:\Windows\SysWOW64\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\Microsoft\VBS3.vbs"8⤵
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C:\Windows\SysWOW64\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\Microsoft\VBS3.vbs"8⤵
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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:\Users\Admin\AppData\Roaming\Microsoft\svchcst.exe"C:\Users\Admin\AppData\Roaming\Microsoft\svchcst.exe"7⤵
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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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Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
Config.ini
VBS3.vbs
VBS3.vbs
VBS3.vbs
VBS3.vbs
svchcst.exe
svchcst.exe
svchcst.exe
memory/672-35-0x00000000009B0000-0x0000000000A72000-memory.dmp
memory/1076-10-0x0000000000400000-0x0000000000551000-memory.dmp
memory/1076-12-0x0000000000400000-0x0000000000551000-memory.dmp
memory/1076-11-0x0000000000C30000-0x0000000000CF2000-memory.dmp
memory/1076-13-0x0000000000C30000-0x0000000000CF2000-memory.dmp
memory/1496-64-0x00000000009B0000-0x0000000000A72000-memory.dmp
memory/2012-62-0x0000000005B80000-0x0000000005B9D000-memory.dmp
memory/2012-60-0x0000000003F90000-0x0000000003FB5000-memory.dmp
memory/2012-61-0x0000000005B60000-0x0000000005B7F000-memory.dmp
memory/2012-63-0x0000000005BA0000-0x0000000005BAB000-memory.dmp
memory/2156-59-0x0000000005AD0000-0x0000000005ADB000-memory.dmp
memory/2156-58-0x0000000005AB0000-0x0000000005ACD000-memory.dmp
memory/2156-57-0x0000000005A90000-0x0000000005AAF000-memory.dmp
memory/2156-56-0x0000000003EC0000-0x0000000003EE5000-memory.dmp
memory/2516-47-0x0000000000C20000-0x0000000000CE2000-memory.dmp
memory/2516-48-0x0000000000C20000-0x0000000000CE2000-memory.dmp
memory/2988-32-0x0000000005420000-0x00000000054A8000-memory.dmp
memory/3552-26-0x00000000009C0000-0x0000000000A82000-memory.dmp
memory/3552-29-0x00000000009C0000-0x0000000000A82000-memory.dmp
memory/4140-74-0x0000000000B10000-0x0000000000BD2000-memory.dmp
memory/4140-77-0x0000000000B10000-0x0000000000BD2000-memory.dmp
memory/4320-51-0x0000000003A10000-0x0000000003A35000-memory.dmp
memory/4320-53-0x0000000005600000-0x000000000561D000-memory.dmp
memory/4320-54-0x0000000005620000-0x000000000562B000-memory.dmp
memory/4320-52-0x00000000055E0000-0x00000000055FF000-memory.dmp
memory/4816-34-0x0000000004DD0000-0x0000000004E58000-memory.dmp