Analysis Overview
SHA256
7bf834c098aa6bbb8e2aaff60f508d2732f44f3407dea201d5b5dc95ec7a5fd0
Threat Level: Shows suspicious behavior
The file f027085d3bcedc12976026e68afc2909_JaffaCakes118 was found to be: Shows suspicious behavior.
Malicious Activity Summary
Checks computer location settings
Deletes itself
Installs/modifies Browser Helper Object
Drops file in System32 directory
Unsigned PE
Enumerates physical storage devices
Modifies Internet Explorer settings
Modifies registry class
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-04-15 03:03
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-04-15 03:03
Reported
2024-04-15 03:06
Platform
win7-20240221-en
Max time kernel
121s
Max time network
125s
Command Line
Signatures
Deletes itself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\cmd.exe | N/A |
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\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{5BEEFD1C-446F-48a7-A7C7-C8E5986A9760} | C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\SysWOW64\kaxs.dat | C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe | N/A |
| File created | C:\Windows\SysWOW64\rbsgam.dll | C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe | N/A |
Enumerates physical storage devices
Modifies Internet Explorer settings
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Internet Explorer\Main\Enable Browser Extensions = "yes" | C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{5BEEFD1C-446F-48a7-A7C7-C8E5986A9760}\InprocServer32\ = "rbsgam.dll" | C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{5BEEFD1C-446F-48a7-A7C7-C8E5986A9760}\TypeLib | C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{5BEEFD1C-446F-48a7-A7C7-C8E5986A9760} | C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{5BEEFD1C-446F-48a7-A7C7-C8E5986A9760}\ = "Rmn plugin" | C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{5BEEFD1C-446F-48a7-A7C7-C8E5986A9760}\InprocServer32 | C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{5BEEFD1C-446F-48a7-A7C7-C8E5986A9760}\TypeLib\ = "{43F108CF-4818-4468-8C7A-5F32FC8F6A8D}" | C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{5BEEFD1C-446F-48a7-A7C7-C8E5986A9760}\InprocServer32\ThreadingModel = "Apartment" | C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{5BEEFD1C-446F-48a7-A7C7-C8E5986A9760}\ProgID | C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{5BEEFD1C-446F-48a7-A7C7-C8E5986A9760}\ProgID\ = "RITLAB.1" | C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1908 wrote to memory of 1444 | N/A | C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 1908 wrote to memory of 1444 | N/A | C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 1908 wrote to memory of 1444 | N/A | C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 1908 wrote to memory of 1444 | N/A | C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe | C:\Windows\SysWOW64\cmd.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\F02708~1.EXE >> NUL
Network
Files
Analysis: behavioral2
Detonation Overview
Submitted
2024-04-15 03:03
Reported
2024-04-15 03:06
Platform
win10v2004-20240412-en
Max time kernel
120s
Max time network
113s
Command Line
Signatures
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe | N/A |
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\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{5BEEFD1C-446F-48a7-A7C7-C8E5986A9760} | C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\SysWOW64\kaxs.dat | C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe | N/A |
| File created | C:\Windows\SysWOW64\rbsgam.dll | C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe | N/A |
Enumerates physical storage devices
Modifies Internet Explorer settings
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Enable Browser Extensions = "yes" | C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5BEEFD1C-446F-48a7-A7C7-C8E5986A9760}\ = "Rmn plugin" | C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5BEEFD1C-446F-48a7-A7C7-C8E5986A9760}\TypeLib | C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5BEEFD1C-446F-48a7-A7C7-C8E5986A9760}\TypeLib\ = "{43F108CF-4818-4468-8C7A-5F32FC8F6A8D}" | C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5BEEFD1C-446F-48a7-A7C7-C8E5986A9760} | C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5BEEFD1C-446F-48a7-A7C7-C8E5986A9760}\InprocServer32\ = "rbsgam.dll" | C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5BEEFD1C-446F-48a7-A7C7-C8E5986A9760}\InprocServer32\ThreadingModel = "Apartment" | C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5BEEFD1C-446F-48a7-A7C7-C8E5986A9760}\ProgID | C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5BEEFD1C-446F-48a7-A7C7-C8E5986A9760}\ProgID\ = "RITLAB.1" | C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5BEEFD1C-446F-48a7-A7C7-C8E5986A9760}\InprocServer32 | C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1604 wrote to memory of 2136 | N/A | C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 1604 wrote to memory of 2136 | N/A | C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 1604 wrote to memory of 2136 | N/A | C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe | C:\Windows\SysWOW64\cmd.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\F02708~1.EXE >> NUL
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 249.197.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 71.31.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 204.79.197.237:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 241.154.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 237.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 205.47.74.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 21.114.53.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 103.169.127.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 198.187.3.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.205.248.87.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.143.123.92.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 19.229.111.52.in-addr.arpa | udp |