Analysis
- max time kernel
76s - max time network
146s - platform
windows10-2004_x64 - resource
win10v2004-20260911-en - resource tags
- submitted
15/10/2026, 23:45
General
- Target jaffacakes118_Trojan.Win32.Agent.td.exe
- Size 2.5MB
- Sample261015-3rrj4set3s
- SHA256 2242ab96b3db54a3095dcf2f35da785b60abeae4b91d082ccc15ce4361aabd4d
Malware Config
Signatures
- Family: FlyAgent
FlyAgent is a backdoor written in C++.
- Detects FlyAgent Backdoor 8 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Creates a file in the Startup directory 1 TTPs 1 IoCs
A file was written to a Windows startup folder. Files in these directories are executed automatically when a user logs on or an application initializes.
- Adds Run key to start application 2 TTPs 1 IoCs
- Executes a VBScript file via the Windows Script Host. 1 TTPs 2 IoCs
- UPX packed file 8 IoCs
Detects executables packed with UPX/modified UPX open source packer.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Reads the TCP/IP host and domain name from the registry 1 TTPs 6 IoCs
The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.
- System Location Discovery: System Language Discovery 1 TTPs 3 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 12 IoCs
- Suspicious behavior: RenamesItself 1 IoCs
- Suspicious use of SetWindowsHookEx 2 IoCs
- Suspicious use of WriteProcessMemory 2 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\jaffacakes118_Trojan.Win32.Agent.td.exe"C:\Users\Admin\AppData\Local\Temp\jaffacakes118_Trojan.Win32.Agent.td.exe"1⤵
- Checks computer location settings
- Creates a file in the Startup directory
- Adds Run key to start application
- Reads the TCP/IP host and domain name from the registry
- 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⤵
- Executes a VBScript file via the Windows Script Host.
- Reads the TCP/IP host and domain name from the registry
- 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⤵
- Executes a VBScript file via the Windows Script Host.
- Reads the TCP/IP host and domain name from the registry
- System Location Discovery: System Language Discovery
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
ytmd.exe
Config.ini
VBS3.vbs
svchcst.exe
memory/2188-32-0x0000000000400000-0x0000000000555000-memory.dmp
memory/2188-28-0x0000000000400000-0x0000000000555000-memory.dmp
memory/2188-0-0x0000000000400000-0x0000000000555000-memory.dmp
memory/2188-35-0x0000000000400000-0x0000000000555000-memory.dmp
memory/2188-1-0x00000000004D8000-0x00000000004D9000-memory.dmp
memory/2188-39-0x0000000000400000-0x0000000000555000-memory.dmp
memory/2188-42-0x0000000000400000-0x0000000000555000-memory.dmp
memory/2188-45-0x0000000000400000-0x0000000000555000-memory.dmp
memory/2188-48-0x0000000000400000-0x0000000000555000-memory.dmp