Analysis Overview
SHA256
584dd4f18ff5bd80417cb2e263e244bf32804011c4a68a0db7d4fb093ee8fd60
Threat Level: Shows suspicious behavior
The file 042f85ef1b4aba0dec57b4c72e872166_JaffaCakes118 was found to be: Shows suspicious behavior.
Malicious Activity Summary
Installs/modifies Browser Helper Object
Unsigned PE
Modifies registry class
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-06-20 07:56
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-06-20 07:56
Reported
2024-06-20 07:58
Platform
win7-20240611-en
Max time kernel
120s
Max time network
124s
Command Line
Signatures
Installs/modifies Browser Helper Object
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{884B6FB1-B27D-4719-B64F-0EF41D469FDE} | C:\Windows\SysWOW64\regsvr32.exe | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{884B6FB1-B27D-4719-B64F-0EF41D469FDE}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\042f85ef1b4aba0dec57b4c72e872166_JaffaCakes118.dll" | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\042f85ef1b4aba0dec57b4c72e872166_JaffaCakes118.z9981z | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\042f85ef1b4aba0dec57b4c72e872166_JaffaCakes118.z9981z\ = "z9981z" | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\042f85ef1b4aba0dec57b4c72e872166_JaffaCakes118.z9981z\Clsid\ = "{884B6FB1-B27D-4719-B64F-0EF41D469FDE}" | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{884B6FB1-B27D-4719-B64F-0EF41D469FDE}\ProgID\ = "042f85ef1b4aba0dec57b4c72e872166_JaffaCakes118.z9981z" | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{884B6FB1-B27D-4719-B64F-0EF41D469FDE}\ = "z9981z" | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{884B6FB1-B27D-4719-B64F-0EF41D469FDE}\InprocServer32 | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\042f85ef1b4aba0dec57b4c72e872166_JaffaCakes118.z9981z\Clsid | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{884B6FB1-B27D-4719-B64F-0EF41D469FDE}\ProgID | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{884B6FB1-B27D-4719-B64F-0EF41D469FDE} | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{884B6FB1-B27D-4719-B64F-0EF41D469FDE}\InprocServer32\ThreadingModel = "Apartment" | C:\Windows\SysWOW64\regsvr32.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2408 wrote to memory of 1728 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 2408 wrote to memory of 1728 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 2408 wrote to memory of 1728 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 2408 wrote to memory of 1728 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 2408 wrote to memory of 1728 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 2408 wrote to memory of 1728 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 2408 wrote to memory of 1728 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
Processes
C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\042f85ef1b4aba0dec57b4c72e872166_JaffaCakes118.dll
C:\Windows\SysWOW64\regsvr32.exe
/s C:\Users\Admin\AppData\Local\Temp\042f85ef1b4aba0dec57b4c72e872166_JaffaCakes118.dll
Network
Files
memory/1728-0-0x00000000001C0000-0x0000000000235000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-20 07:56
Reported
2024-06-20 07:58
Platform
win10v2004-20240508-en
Max time kernel
51s
Max time network
51s
Command Line
Signatures
Installs/modifies Browser Helper Object
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{884B6FB1-B27D-4719-B64F-0EF41D469FDE} | C:\Windows\SysWOW64\regsvr32.exe | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\042f85ef1b4aba0dec57b4c72e872166_JaffaCakes118.z9981z\Clsid\ = "{884B6FB1-B27D-4719-B64F-0EF41D469FDE}" | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{884B6FB1-B27D-4719-B64F-0EF41D469FDE}\ = "z9981z" | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{884B6FB1-B27D-4719-B64F-0EF41D469FDE}\InprocServer32 | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{884B6FB1-B27D-4719-B64F-0EF41D469FDE}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\042f85ef1b4aba0dec57b4c72e872166_JaffaCakes118.dll" | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\042f85ef1b4aba0dec57b4c72e872166_JaffaCakes118.z9981z\Clsid | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{884B6FB1-B27D-4719-B64F-0EF41D469FDE}\ProgID | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{884B6FB1-B27D-4719-B64F-0EF41D469FDE}\ProgID\ = "042f85ef1b4aba0dec57b4c72e872166_JaffaCakes118.z9981z" | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{884B6FB1-B27D-4719-B64F-0EF41D469FDE} | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{884B6FB1-B27D-4719-B64F-0EF41D469FDE}\InprocServer32\ThreadingModel = "Apartment" | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\042f85ef1b4aba0dec57b4c72e872166_JaffaCakes118.z9981z | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\042f85ef1b4aba0dec57b4c72e872166_JaffaCakes118.z9981z\ = "z9981z" | C:\Windows\SysWOW64\regsvr32.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4128 wrote to memory of 4392 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 4128 wrote to memory of 4392 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 4128 wrote to memory of 4392 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
Processes
C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\042f85ef1b4aba0dec57b4c72e872166_JaffaCakes118.dll
C:\Windows\SysWOW64\regsvr32.exe
/s C:\Users\Admin\AppData\Local\Temp\042f85ef1b4aba0dec57b4c72e872166_JaffaCakes118.dll