Analysis Overview
SHA256
170982622474c61c092a10c4bf5b44a26779698a4e4dd44a75f54cad15c3d87d
Threat Level: Shows suspicious behavior
The file f12c66f86051aa4cd5ca0fa117a0797b_JaffaCakes118 was found to be: Shows suspicious behavior.
Malicious Activity Summary
Installs/modifies Browser Helper Object
Drops file in System32 directory
Unsigned PE
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Modifies registry class
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-04-15 13:33
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-04-15 13:33
Reported
2024-04-15 13:35
Platform
win7-20240220-en
Max time kernel
150s
Max time network
117s
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\{71954FAC-1023-154F-895A-1458258AD817} | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{71954FAC-1023-154F-895A-1458258AD817}\ = "ypdjebmp.dll" | C:\Windows\SysWOW64\rundll32.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\SysWOW64\verclsid.exe | C:\Windows\SysWOW64\rundll32.exe | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{71954FAC-1023-154F-895A-1458258AD817} | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{71954FAC-1023-154F-895A-1458258AD817}\InprocServer32\ = "C:\\Windows\\SysWow64\\ypdjebmp.dll" | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{71954FAC-1023-154F-895A-1458258AD817}\InprocServer32\ThreadingModel = "Apartment" | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{71954FAC-1023-154F-895A-1458258AD817}\InprocServer32 | C:\Windows\SysWOW64\rundll32.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\f12c66f86051aa4cd5ca0fa117a0797b_JaffaCakes118.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\f12c66f86051aa4cd5ca0fa117a0797b_JaffaCakes118.dll,#1
C:\Windows\SysWOW64\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\~DFD259401769.bat
Network
Files
C:\Users\Admin\AppData\Local\Temp\~DFD259401769.bat
| MD5 | 09517fc62284f33e877a276463580bd1 |
| SHA1 | 0b14fe1db4493818f9de0bf2a56ee5370b8d479a |
| SHA256 | 6cc6bbb1f3f754b6894d84130f5f2d86569ac3a603e1632d3cefa028f22b6238 |
| SHA512 | 1b924dd216d0f38199cc6df215e65ff260aa48fa37aa620dabcbc616f434643bd1f2e617d66b14bd52900214148741565128ba9589782ba582fd7308369f4a4d |
Analysis: behavioral2
Detonation Overview
Submitted
2024-04-15 13:33
Reported
2024-04-15 13:35
Platform
win10v2004-20240412-en
Max time kernel
150s
Max time network
152s
Command Line
Signatures
Installs/modifies Browser Helper Object
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{71954FAC-1023-154F-895A-1458258AD817}\ = "ypdjebmp.dll" | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{71954FAC-1023-154F-895A-1458258AD817} | C:\Windows\SysWOW64\rundll32.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\SysWOW64\verclsid.exe | C:\Windows\SysWOW64\rundll32.exe | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{71954FAC-1023-154F-895A-1458258AD817} | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{71954FAC-1023-154F-895A-1458258AD817}\InprocServer32\ = "C:\\Windows\\SysWow64\\ypdjebmp.dll" | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{71954FAC-1023-154F-895A-1458258AD817}\InprocServer32\ThreadingModel = "Apartment" | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{71954FAC-1023-154F-895A-1458258AD817}\InprocServer32 | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID | C:\Windows\SysWOW64\rundll32.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2224 wrote to memory of 5024 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2224 wrote to memory of 5024 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2224 wrote to memory of 5024 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 5024 wrote to memory of 5004 | N/A | C:\Windows\SysWOW64\rundll32.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 5024 wrote to memory of 5004 | N/A | C:\Windows\SysWOW64\rundll32.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 5024 wrote to memory of 5004 | N/A | C:\Windows\SysWOW64\rundll32.exe | C:\Windows\SysWOW64\cmd.exe |
Processes
C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\f12c66f86051aa4cd5ca0fa117a0797b_JaffaCakes118.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\f12c66f86051aa4cd5ca0fa117a0797b_JaffaCakes118.dll,#1
C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\~DFD240609312.bat
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 74.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.154.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 216.197.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 43.58.199.20.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 | 206.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 249.197.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 31.243.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 122.136.73.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 63.141.182.52.in-addr.arpa | udp |
Files
C:\Users\Admin\AppData\Local\Temp\~DFD240609312.bat
| MD5 | 09517fc62284f33e877a276463580bd1 |
| SHA1 | 0b14fe1db4493818f9de0bf2a56ee5370b8d479a |
| SHA256 | 6cc6bbb1f3f754b6894d84130f5f2d86569ac3a603e1632d3cefa028f22b6238 |
| SHA512 | 1b924dd216d0f38199cc6df215e65ff260aa48fa37aa620dabcbc616f434643bd1f2e617d66b14bd52900214148741565128ba9589782ba582fd7308369f4a4d |