Analysis
- max time kernel
149s - max time network
146s - platform
windows10-2004_x64 - resource
win10v2004-20260911-en - resource tags
- submitted
15/09/2026, 16:53
General
- Target jaffacakes118_e7260aadfa660fd399990d23ba7bf222_JaffaCakes118.exe
- Size 165KB
- Sample260915-vd8bps1cmf
- SHA256 c4cf29d4cea2225c7c596c0efc95f4177cae6e3c9786c75cb316900a3df0672f
Malware Config
Signatures
- Family: Firseria
Firseria a downloader/adware written in C++.
- Detects Firseria 2 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 1 IoCs
- Drops desktop.ini file(s) 2 IoCs
- Drops file in Windows directory 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 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious behavior: EnumeratesProcesses 1 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of SetWindowsHookEx 2 IoCs
- Suspicious use of WriteProcessMemory 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\jaffacakes118_e7260aadfa660fd399990d23ba7bf222_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\jaffacakes118_e7260aadfa660fd399990d23ba7bf222_JaffaCakes118.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\ins4774\ins4774.exe"C:\Users\Admin\AppData\Local\Temp\ins4774\ins4774.exe" ins.exe /e4788187 /u4f2b9a7a-4984-4696-9db8-240f5bc06f2f2⤵
- Executes dropped EXE
- Drops desktop.ini file(s)
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
ins4774.exe
memory/4084-0-0x0000000000400000-0x000000000047C000-memory.dmp
memory/4084-27-0x0000000000400000-0x000000000047C000-memory.dmp
memory/4084-19-0x0000000000400000-0x000000000047C000-memory.dmp
memory/4704-18-0x0000000073F00000-0x00000000744B1000-memory.dmp
memory/4704-17-0x0000000073F00000-0x00000000744B1000-memory.dmp
memory/4704-16-0x0000000073F00000-0x00000000744B1000-memory.dmp
memory/4704-13-0x0000000073F02000-0x0000000073F04000-memory.dmp
memory/4704-20-0x0000000001090000-0x00000000010A0000-memory.dmp
memory/4704-21-0x0000000073F02000-0x0000000073F04000-memory.dmp
memory/4704-22-0x0000000073F00000-0x00000000744B1000-memory.dmp
memory/4704-24-0x0000000073F00000-0x00000000744B1000-memory.dmp
memory/4704-26-0x0000000073F00000-0x00000000744B1000-memory.dmp
memory/4704-12-0x0000000001090000-0x00000000010A0000-memory.dmp