Analysis
- max time kernel
58s - max time network
144s - platform
windows10-2004_x64 - resource
win10v2004-20260130-en - resource tags
- submitted
21/04/2026, 23:14
General
- Target b906e3cf3fdea849de9bfae1672b00669e6760d326a5a672bfb9eaf8c4d4ca4e.exe
- Size 1.1MB
- Sample260421-28ca3sg15v
- SHA256 b906e3cf3fdea849de9bfae1672b00669e6760d326a5a672bfb9eaf8c4d4ca4e
Malware Config
Signatures
- Family: FlyAgent
FlyAgent is a backdoor written in C++.
- Detects FlyAgent Backdoor 3 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 4 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 6 IoCs
- Suspicious behavior: RenamesItself 1 IoCs
- Suspicious use of SetWindowsHookEx 2 IoCs
- Suspicious use of WriteProcessMemory 3 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\b906e3cf3fdea849de9bfae1672b00669e6760d326a5a672bfb9eaf8c4d4ca4e.exe"C:\Users\Admin\AppData\Local\Temp\b906e3cf3fdea849de9bfae1672b00669e6760d326a5a672bfb9eaf8c4d4ca4e.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: RenamesItself
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
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
-
-
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
-
-
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
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
VBS3.vbs
memory/2020-16-0x00000000012A0000-0x000000000131A000-memory.dmp
memory/2020-26-0x00000000012A0000-0x000000000131A000-memory.dmp
memory/2324-18-0x0000000001330000-0x00000000013AA000-memory.dmp
memory/2324-28-0x0000000001330000-0x00000000013AA000-memory.dmp
memory/2780-0-0x0000000000400000-0x000000000055F000-memory.dmp
memory/2780-13-0x0000000000400000-0x000000000055F000-memory.dmp
memory/2780-14-0x0000000000B30000-0x0000000000BAA000-memory.dmp
memory/2780-15-0x0000000000400000-0x000000000055F000-memory.dmp
memory/3864-17-0x0000000000FF0000-0x000000000106A000-memory.dmp
memory/3864-27-0x0000000000FF0000-0x000000000106A000-memory.dmp