Analysis
- max time kernel
106s - max time network
93s - platform
windows11-21h2_x64 - resource
win11-20260130-en - resource tags
- submitted
23/04/2026, 22:38
General
- Target 3fa0962be2ca2ecddf85d64135db0bd309a34569f36d9a549a1c8dea6668b0c8.exe
- Size 1.3MB
- Sample260423-2kb1eahv6j
- SHA256 3fa0962be2ca2ecddf85d64135db0bd309a34569f36d9a549a1c8dea6668b0c8
Malware Config
Signatures
- Family: FlyAgent
FlyAgent is a backdoor written in C++.
- Detects FlyAgent Backdoor 5 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\3fa0962be2ca2ecddf85d64135db0bd309a34569f36d9a549a1c8dea6668b0c8.exe"C:\Users\Admin\AppData\Local\Temp\3fa0962be2ca2ecddf85d64135db0bd309a34569f36d9a549a1c8dea6668b0c8.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
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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"6⤵
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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"6⤵
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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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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/8-23-0x0000000000400000-0x0000000000551000-memory.dmp
memory/8-24-0x0000000000C50000-0x0000000000C9A000-memory.dmp
memory/8-11-0x0000000000C50000-0x0000000000C9A000-memory.dmp
memory/8-10-0x0000000000400000-0x0000000000551000-memory.dmp
memory/1116-65-0x00000000007C0000-0x000000000080A000-memory.dmp
memory/1928-68-0x0000000000980000-0x00000000009CA000-memory.dmp
memory/1944-28-0x0000000002ED0000-0x0000000002F1A000-memory.dmp
memory/2916-66-0x0000000003AE0000-0x0000000003B2A000-memory.dmp
memory/2916-67-0x0000000005990000-0x0000000005A18000-memory.dmp
memory/3260-27-0x0000000002280000-0x00000000022CA000-memory.dmp
memory/4204-64-0x0000000005D30000-0x0000000005DB8000-memory.dmp
memory/4204-63-0x0000000003E80000-0x0000000003ECA000-memory.dmp
memory/4444-57-0x00000000009E0000-0x0000000000A2A000-memory.dmp
memory/4444-59-0x00000000009E0000-0x0000000000A2A000-memory.dmp
memory/4636-43-0x0000000000780000-0x00000000007CA000-memory.dmp
memory/4636-39-0x0000000000780000-0x00000000007CA000-memory.dmp
memory/5040-46-0x0000000003780000-0x00000000037CA000-memory.dmp
memory/5040-47-0x0000000005B50000-0x0000000005BD8000-memory.dmp