Analysis Overview
SHA256
40db3319b8eeec04973e9f67ce1eb5f76160619c9c6a54e3a8208a18be7529d2
Threat Level: Shows suspicious behavior
The file 03fbbba08443d719c48a16380a4c7bca_JaffaCakes118 was found to be: Shows suspicious behavior.
Malicious Activity Summary
Loads dropped DLL
Installs/modifies Browser Helper Object
Drops file in System32 directory
Unsigned PE
Modifies registry class
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-06-20 07:22
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-06-20 07:22
Reported
2024-06-20 07:24
Platform
win7-20240611-en
Max time kernel
120s
Max time network
120s
Command Line
Signatures
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1932 wrote to memory of 2208 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1932 wrote to memory of 2208 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1932 wrote to memory of 2208 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1932 wrote to memory of 2208 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1932 wrote to memory of 2208 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1932 wrote to memory of 2208 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1932 wrote to memory of 2208 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
Processes
C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\03fbbba08443d719c48a16380a4c7bca_JaffaCakes118.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\03fbbba08443d719c48a16380a4c7bca_JaffaCakes118.dll,#1
Network
Files
memory/2208-1-0x00000000001B0000-0x00000000001B5000-memory.dmp
memory/2208-0-0x0000000010000000-0x0000000010035000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-20 07:22
Reported
2024-06-20 07:24
Platform
win10v2004-20240611-en
Max time kernel
137s
Max time network
123s
Command Line
Signatures
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.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\{1b6ee0e2-f769-48ac-9e9b-3f6cdc6d91d7} | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{1b6ee0e2-f769-48ac-9e9b-3f6cdc6d91d7}\ = "{7d19d6cd-c6f3-b9e9-ca84-967f2e0ee6b1}" | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Key deleted | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{1FD49718-1D00-4B19-AF5F-070AF6D5D54C} | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Key deleted | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{31D09BA0-12F5-4CCE-BE8A-2923E76605DA} | C:\Windows\SysWOW64\rundll32.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\SysWOW64\bhnpml.dll | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\bhnpml.dll | C:\Windows\SysWOW64\rundll32.exe | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| Key deleted | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{31D09BA0-12F5-4CCE-BE8A-2923E76605DA} | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Key deleted | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1FD49718-1D00-4B19-AF5F-070AF6D5D54C}\VersionIndependentProgID | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Key deleted | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1FD49718-1D00-4B19-AF5F-070AF6D5D54C}\Programmable | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Key deleted | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{31D09BA0-12F5-4CCE-BE8A-2923E76605DA}\TypeLib | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Key deleted | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{31D09BA0-12F5-4CCE-BE8A-2923E76605DA}\InprocServer32 | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1b6ee0e2-f769-48ac-9e9b-3f6cdc6d91d7}\InprocServer32\ThreadingModel = "free" | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Key deleted | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1FD49718-1D00-4B19-AF5F-070AF6D5D54C} | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Key deleted | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{31D09BA0-12F5-4CCE-BE8A-2923E76605DA}\Implemented Categories\{59FB2056-D625-48D0-A944-1A85B5AB2640} | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Key deleted | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{31D09BA0-12F5-4CCE-BE8A-2923E76605DA}\Implemented Categories | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1b6ee0e2-f769-48ac-9e9b-3f6cdc6d91d7}\InprocServer32\ = "C:\\Windows\\SysWow64\\bhnpml.dll" | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Key deleted | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1FD49718-1D00-4B19-AF5F-070AF6D5D54C}\TypeLib | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Key deleted | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1FD49718-1D00-4B19-AF5F-070AF6D5D54C}\Implemented Categories | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1b6ee0e2-f769-48ac-9e9b-3f6cdc6d91d7}\InprocServer32 | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1b6ee0e2-f769-48ac-9e9b-3f6cdc6d91d7} | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Key deleted | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{31D09BA0-12F5-4CCE-BE8A-2923E76605DA}\Version | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Key deleted | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{31D09BA0-12F5-4CCE-BE8A-2923E76605DA}\Programmable | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Key deleted | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{31D09BA0-12F5-4CCE-BE8A-2923E76605DA}\ProgID | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Key deleted | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1FD49718-1D00-4B19-AF5F-070AF6D5D54C}\ProgID | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Key deleted | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1FD49718-1D00-4B19-AF5F-070AF6D5D54C}\InprocServer32 | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Key deleted | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1FD49718-1D00-4B19-AF5F-070AF6D5D54C}\Implemented Categories\{59FB2056-D625-48D0-A944-1A85B5AB2640} | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Key deleted | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{31D09BA0-12F5-4CCE-BE8A-2923E76605DA}\VersionIndependentProgID | C:\Windows\SysWOW64\rundll32.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4072 wrote to memory of 4124 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 4072 wrote to memory of 4124 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 4072 wrote to memory of 4124 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 4124 wrote to memory of 2252 | N/A | C:\Windows\SysWOW64\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 4124 wrote to memory of 2252 | N/A | C:\Windows\SysWOW64\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 4124 wrote to memory of 2252 | N/A | C:\Windows\SysWOW64\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
Processes
C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\03fbbba08443d719c48a16380a4c7bca_JaffaCakes118.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\03fbbba08443d719c48a16380a4c7bca_JaffaCakes118.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe "C:\Windows\system32\bhnpml.dll",i
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 209.205.72.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 71.31.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 88.90.14.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.35.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 154.239.44.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 232.168.11.51.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 50.23.12.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 83.210.23.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 205.47.74.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 11.227.111.52.in-addr.arpa | udp |
Files
memory/4124-0-0x0000000010000000-0x0000000010035000-memory.dmp
memory/4124-1-0x0000000010000000-0x0000000010035000-memory.dmp
C:\Windows\SysWOW64\bhnpml.dll
| MD5 | 03fbbba08443d719c48a16380a4c7bca |
| SHA1 | 2ec24b53585b27f9a778845f4e530e6b0421a575 |
| SHA256 | 40db3319b8eeec04973e9f67ce1eb5f76160619c9c6a54e3a8208a18be7529d2 |
| SHA512 | 5e3042db83759db56f1d99cbdf52678f06297f678034a1806122f5012bf5ea38a186944dc1fed4e73ef9922dbe169849d49d70f0ef9fc000088e7592cd76cd86 |
memory/2252-5-0x0000000010000000-0x0000000010035000-memory.dmp
memory/2252-6-0x0000000010000000-0x0000000010035000-memory.dmp