Analysis Overview
SHA256
db5f68de01162f9978cee6bbd6e478400635ed609046d000144171a152055e5f
Threat Level: Shows suspicious behavior
The file JaffaCakes118_40bf7c35b44d4b147c2e0969456bc557 was found to be: Shows suspicious behavior.
Malicious Activity Summary
Deletes itself
Checks computer location settings
Indicator Removal: File Deletion
Installs/modifies Browser Helper Object
Drops file in System32 directory
Enumerates physical storage devices
Unsigned PE
System Location Discovery: System Language Discovery
Modifies Internet Explorer settings
Suspicious use of WriteProcessMemory
Modifies registry class
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2025-01-27 14:58
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2025-01-27 14:58
Reported
2025-01-27 15:00
Platform
win7-20240903-en
Max time kernel
119s
Max time network
120s
Command Line
Signatures
Deletes itself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\cmd.exe | N/A |
Indicator Removal: File Deletion
Installs/modifies Browser Helper Object
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects | C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_40bf7c35b44d4b147c2e0969456bc557.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{EF99D588-3D5F-4194-828A-E03870A57A77} | C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_40bf7c35b44d4b147c2e0969456bc557.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\SysWOW64\lm.dat | C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_40bf7c35b44d4b147c2e0969456bc557.exe | N/A |
| File created | C:\Windows\SysWOW64\gcomd32.dll | C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_40bf7c35b44d4b147c2e0969456bc557.exe | N/A |
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_40bf7c35b44d4b147c2e0969456bc557.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\cmd.exe | N/A |
Modifies Internet Explorer settings
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Internet Explorer\Main\Enable Browser Extensions = "yes" | C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_40bf7c35b44d4b147c2e0969456bc557.exe | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EF99D588-3D5F-4194-828A-E03870A57A77}\InprocServer32 | C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_40bf7c35b44d4b147c2e0969456bc557.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EF99D588-3D5F-4194-828A-E03870A57A77}\InprocServer32\ = "gcomd32.dll" | C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_40bf7c35b44d4b147c2e0969456bc557.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EF99D588-3D5F-4194-828A-E03870A57A77}\ProgID | C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_40bf7c35b44d4b147c2e0969456bc557.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EF99D588-3D5F-4194-828A-E03870A57A77}\TypeLib | C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_40bf7c35b44d4b147c2e0969456bc557.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EF99D588-3D5F-4194-828A-E03870A57A77}\ = "Rmn plugin" | C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_40bf7c35b44d4b147c2e0969456bc557.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EF99D588-3D5F-4194-828A-E03870A57A77}\InprocServer32\ThreadingModel = "Apartment" | C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_40bf7c35b44d4b147c2e0969456bc557.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EF99D588-3D5F-4194-828A-E03870A57A77}\ProgID\ = "RITLAB.1" | C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_40bf7c35b44d4b147c2e0969456bc557.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EF99D588-3D5F-4194-828A-E03870A57A77}\TypeLib\ = "{79DB35EA-0D3F-44b2-8ED4-0E80B681F1CC}" | C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_40bf7c35b44d4b147c2e0969456bc557.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EF99D588-3D5F-4194-828A-E03870A57A77} | C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_40bf7c35b44d4b147c2e0969456bc557.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2084 wrote to memory of 2692 | N/A | C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_40bf7c35b44d4b147c2e0969456bc557.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 2084 wrote to memory of 2692 | N/A | C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_40bf7c35b44d4b147c2e0969456bc557.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 2084 wrote to memory of 2692 | N/A | C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_40bf7c35b44d4b147c2e0969456bc557.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 2084 wrote to memory of 2692 | N/A | C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_40bf7c35b44d4b147c2e0969456bc557.exe | C:\Windows\SysWOW64\cmd.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_40bf7c35b44d4b147c2e0969456bc557.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_40bf7c35b44d4b147c2e0969456bc557.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\JAFFAC~1.EXE >> NUL
Network
Files
Analysis: behavioral2
Detonation Overview
Submitted
2025-01-27 14:58
Reported
2025-01-28 02:34
Platform
win10v2004-20241007-en
Max time kernel
93s
Max time network
143s
Command Line
Signatures
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_40bf7c35b44d4b147c2e0969456bc557.exe | N/A |
Indicator Removal: File Deletion
Installs/modifies Browser Helper Object
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects | C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_40bf7c35b44d4b147c2e0969456bc557.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{EF99D588-3D5F-4194-828A-E03870A57A77} | C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_40bf7c35b44d4b147c2e0969456bc557.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\SysWOW64\lm.dat | C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_40bf7c35b44d4b147c2e0969456bc557.exe | N/A |
| File created | C:\Windows\SysWOW64\gcomd32.dll | C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_40bf7c35b44d4b147c2e0969456bc557.exe | N/A |
Enumerates physical storage devices
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_40bf7c35b44d4b147c2e0969456bc557.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\cmd.exe | N/A |
Modifies Internet Explorer settings
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Enable Browser Extensions = "yes" | C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_40bf7c35b44d4b147c2e0969456bc557.exe | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{EF99D588-3D5F-4194-828A-E03870A57A77}\ = "Rmn plugin" | C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_40bf7c35b44d4b147c2e0969456bc557.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{EF99D588-3D5F-4194-828A-E03870A57A77}\InprocServer32 | C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_40bf7c35b44d4b147c2e0969456bc557.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{EF99D588-3D5F-4194-828A-E03870A57A77}\InprocServer32\ = "gcomd32.dll" | C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_40bf7c35b44d4b147c2e0969456bc557.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{EF99D588-3D5F-4194-828A-E03870A57A77}\InprocServer32\ThreadingModel = "Apartment" | C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_40bf7c35b44d4b147c2e0969456bc557.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{EF99D588-3D5F-4194-828A-E03870A57A77}\ProgID | C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_40bf7c35b44d4b147c2e0969456bc557.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{EF99D588-3D5F-4194-828A-E03870A57A77}\ProgID\ = "RITLAB.1" | C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_40bf7c35b44d4b147c2e0969456bc557.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{EF99D588-3D5F-4194-828A-E03870A57A77} | C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_40bf7c35b44d4b147c2e0969456bc557.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{EF99D588-3D5F-4194-828A-E03870A57A77}\TypeLib\ = "{79DB35EA-0D3F-44b2-8ED4-0E80B681F1CC}" | C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_40bf7c35b44d4b147c2e0969456bc557.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{EF99D588-3D5F-4194-828A-E03870A57A77}\TypeLib | C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_40bf7c35b44d4b147c2e0969456bc557.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2720 wrote to memory of 3504 | N/A | C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_40bf7c35b44d4b147c2e0969456bc557.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 2720 wrote to memory of 3504 | N/A | C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_40bf7c35b44d4b147c2e0969456bc557.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 2720 wrote to memory of 3504 | N/A | C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_40bf7c35b44d4b147c2e0969456bc557.exe | C:\Windows\SysWOW64\cmd.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_40bf7c35b44d4b147c2e0969456bc557.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_40bf7c35b44d4b147c2e0969456bc557.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\JAFFAC~1.EXE >> NUL
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 13.86.106.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.214.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 75.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 5.114.82.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 58.55.71.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 232.168.11.51.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 53.210.109.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.31.95.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 70.252.19.2.in-addr.arpa | udp |