Analysis
- max time kernel
148s - max time network
142s - platform
windows10-2004_x64 - resource
win10v2004-20260911-en - resource tags
- submitted
09/10/2026, 18:42
General
- Target jaffacakes118_Trojan-Dropper.Win32.Flystud.ah.exe
- Size 747KB
- Sample261009-xcdf2sdf74
- SHA256 495173d79ed6893077b610f2e905429af4bb75fa1219c0c0ac584b3746af1ac0
Malware Config
Signatures
- ACProtect 1.3x - 1.4x DLL software 3 IoCs
Detects file using ACProtect software.
- Executes dropped EXE 1 IoCs
- Loads dropped DLL 4 IoCs
- Drops file in System32 directory 4 IoCs
- UPX packed file 8 IoCs
Detects executables packed with UPX/modified UPX open source packer.
- Drops file in Program Files directory 8 IoCs
- Drops file in Windows directory 2 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Executes a command shell one-liner 1 TTPs 1 IoCs
Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.
- 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 Internet Explorer settings 1 TTPs 25 IoCs
- Suspicious behavior: EnumeratesProcesses 6 IoCs
- Suspicious use of FindShellTrayWindow 1 IoCs
- Suspicious use of SetWindowsHookEx 8 IoCs
- Suspicious use of WriteProcessMemory 4 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\jaffacakes118_Trojan-Dropper.Win32.Flystud.ah.exe"C:\Users\Admin\AppData\Local\Temp\jaffacakes118_Trojan-Dropper.Win32.Flystud.ah.exe"1⤵
- Loads dropped DLL
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\PrstService.exeC:\Windows\system32\PrstService.exe2⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in System32 directory
- Drops file in Program Files directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Program Files\Internet Explorer\IEXPLORE.EXE"C:\Program Files\Internet Explorer\IEXPLORE.EXE" -nohome3⤵
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4812 CREDAT:17410 /prefetch:24⤵
- System Location Discovery: System Language Discovery
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c c:\delus.bat2⤵
- Executes a command shell one-liner
- System Location Discovery: System Language Discovery
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
E2C6CBAF0AF08CF203BA74BF0D0AB6D5_430EA0912164D1B129D6E1DC07C63959
E2C6CBAF0AF08CF203BA74BF0D0AB6D5_430EA0912164D1B129D6E1DC07C63959
suggestions[1].en-US
Exmlrpc.fne
dp1.fne
krnln.fnr
PrstService.exe
delus.bat
memory/2216-32-0x0000000010000000-0x000000001012A000-memory.dmp
memory/2216-33-0x0000000000400000-0x0000000000442000-memory.dmp
memory/2216-0-0x0000000000400000-0x0000000000442000-memory.dmp
memory/2216-8-0x0000000010129000-0x000000001012A000-memory.dmp
memory/2216-6-0x0000000010000000-0x000000001012A000-memory.dmp
memory/3728-28-0x00000000023A0000-0x00000000023C4000-memory.dmp
memory/3728-20-0x0000000010000000-0x000000001012A000-memory.dmp
memory/3728-50-0x0000000010000000-0x000000001012A000-memory.dmp
memory/3728-49-0x0000000000400000-0x0000000000442000-memory.dmp