Analysis
- max time kernel
149s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20260911-en - resource tags
- submitted
15/09/2026, 16:48
General
- Target jaffacakes118_e6f7120902a919793c4105ac0ce87fa1_JaffaCakes118.exe
- Size 165KB
- Sample260915-vbddjsbp81
- SHA256 bf7374bae70c2bbe06e6f5fbee0cb2933d978abe021a782799ecc8c5815117d2
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_e6f7120902a919793c4105ac0ce87fa1_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\jaffacakes118_e6f7120902a919793c4105ac0ce87fa1_JaffaCakes118.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\ins3053\ins3053.exe"C:\Users\Admin\AppData\Local\Temp\ins3053\ins3053.exe" ins.exe /e8788786 /u5193805b-c284-4f85-b972-26465bc06f2f2⤵
- 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
ins3053.exe
memory/3672-12-0x00000000012B0000-0x00000000012C0000-memory.dmp
memory/3672-13-0x0000000073632000-0x0000000073634000-memory.dmp
memory/3672-16-0x0000000073630000-0x0000000073BE1000-memory.dmp
memory/3672-17-0x0000000073630000-0x0000000073BE1000-memory.dmp
memory/3672-18-0x0000000073630000-0x0000000073BE1000-memory.dmp
memory/3672-20-0x0000000073632000-0x0000000073634000-memory.dmp
memory/3672-22-0x0000000073630000-0x0000000073BE1000-memory.dmp
memory/4216-1-0x0000000000400000-0x000000000047C000-memory.dmp
memory/4216-19-0x0000000000400000-0x000000000047C000-memory.dmp
memory/4216-24-0x0000000000400000-0x000000000047C000-memory.dmp