Analysis
- max time kernel
45s - max time network
140s - platform
windows10-2004_x64 - resource
win10v2004-20241007-en - resource tags
- submitted
02/11/2024, 03:52
General
- Target 84cb1194b264d1b6fe85c6922fc26a2c_JaffaCakes118.exe
- Size 238KB
- Sample241102-efgzjayela
- SHA256 c4c67cfb6182f546e38f3947c7da258158217cb69315ab50456f3514fc67e0bc
Malware Config
Signatures
- Adds policy Run key to start application 2 TTPs 2 IoCs
- Drops file in Drivers directory 1 IoCs
- Checks BIOS information in registry 2 TTPs 1 IoCs
BIOS information is often read in order to detect sandboxing environments.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 1 IoCs
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Checks whether UAC is enabled 1 TTPs 1 IoCs
- Drops file in System32 directory 2 IoCs
- UPX packed file 6 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).
- 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.
- Gathers network information 2 TTPs 1 IoCs
Uses commandline utility to view network configuration.
- Suspicious behavior: EnumeratesProcesses 4 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 9 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\84cb1194b264d1b6fe85c6922fc26a2c_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\84cb1194b264d1b6fe85c6922fc26a2c_JaffaCakes118.exe"1⤵
- Adds policy Run key to start application
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\Windowss.exeC:\Windows\SysWOW64\Windowss.exe2⤵
- Drops file in Drivers directory
- Checks computer location settings
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\ipconfig.exe"C:\Windows\system32\ipconfig.exe" /flushdns3⤵
- System Location Discovery: System Language Discovery
- Gathers network information
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C:\Windows\SysWOW64\cmd.exe/c C:\Users\Admin\AppData\Local\Temp\~unins3531.bat "C:\Users\Admin\AppData\Local\Temp\84cb1194b264d1b6fe85c6922fc26a2c_JaffaCakes118.exe"2⤵
- System Location Discovery: System Language Discovery
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
~unins3531.bat
Adminxplore.exe
Windowss.exe
memory/4368-0-0x00000000001C0000-0x00000000001EE000-memory.dmp
memory/4368-7-0x0000000000980000-0x0000000000981000-memory.dmp
memory/4368-6-0x0000000000440000-0x00000000004CE000-memory.dmp
memory/4368-5-0x0000000000440000-0x00000000004CE000-memory.dmp
memory/4368-4-0x0000000000440000-0x00000000004CE000-memory.dmp
memory/4368-1-0x0000000000440000-0x00000000004CE000-memory.dmp
memory/4368-28-0x0000000000440000-0x00000000004CE000-memory.dmp
memory/4368-30-0x0000000000440000-0x00000000004CE000-memory.dmp
memory/4368-29-0x0000000000400000-0x000000000043F000-memory.dmp