Analysis Overview
SHA256
ba1a88adebaf8ecf7bb68fdfbba2f31cac0f07c6ce80e69d88b086c8e504addb
Threat Level: Shows suspicious behavior
The file f06d4070ca1ac7e701c707d4f8eae2b2_JaffaCakes118 was found to be: Shows suspicious behavior.
Malicious Activity Summary
ASPack v2.12-2.42
Installs/modifies Browser Helper Object
Writes to the Master Boot Record (MBR)
Unsigned PE
Modifies registry class
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-04-15 05:32
Signatures
ASPack v2.12-2.42
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-04-15 05:32
Reported
2024-04-15 05:35
Platform
win7-20231129-en
Max time kernel
119s
Max time network
119s
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\{7AFD00B9-30B5-43A5-B3D6-E42849B6016B} | C:\Windows\SysWOW64\regsvr32.exe | N/A |
Writes to the Master Boot Record (MBR)
| Description | Indicator | Process | Target |
| File opened for modification | \??\PhysicalDrive0 | C:\Windows\SysWOW64\regsvr32.exe | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7AFD00B9-30B5-43A5-B3D6-E42849B6016B}\InprocServer32\ThreadingModel = "Apartment" | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7AFD00B9-30B5-43A5-B3D6-E42849B6016B}\ProgID\ = "f06d4070ca1ac7e701c707d4f8eae2b2_JaffaCakes118.AAAAA" | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\.key | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7AFD00B9-30B5-43A5-B3D6-E42849B6016B} | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7AFD00B9-30B5-43A5-B3D6-E42849B6016B}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\f06d4070ca1ac7e701c707d4f8eae2b2_JaffaCakes118.dll" | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7AFD00B9-30B5-43A5-B3D6-E42849B6016B}\InprocServer32 | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\f06d4070ca1ac7e701c707d4f8eae2b2_JaffaCakes118.AAAAA | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\f06d4070ca1ac7e701c707d4f8eae2b2_JaffaCakes118.AAAAA\ = "CCCCCCC" | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7AFD00B9-30B5-43A5-B3D6-E42849B6016B}\ProgID | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\.key\ = "regfile" | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7AFD00B9-30B5-43A5-B3D6-E42849B6016B}\ = "CCCCCCC" | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\f06d4070ca1ac7e701c707d4f8eae2b2_JaffaCakes118.AAAAA\Clsid\ = "{7AFD00B9-30B5-43A5-B3D6-E42849B6016B}" | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\.key\ | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\f06d4070ca1ac7e701c707d4f8eae2b2_JaffaCakes118.AAAAA\Clsid | C:\Windows\SysWOW64\regsvr32.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1108 wrote to memory of 2196 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 1108 wrote to memory of 2196 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 1108 wrote to memory of 2196 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 1108 wrote to memory of 2196 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 1108 wrote to memory of 2196 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 1108 wrote to memory of 2196 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 1108 wrote to memory of 2196 | 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\f06d4070ca1ac7e701c707d4f8eae2b2_JaffaCakes118.dll
C:\Windows\SysWOW64\regsvr32.exe
/s C:\Users\Admin\AppData\Local\Temp\f06d4070ca1ac7e701c707d4f8eae2b2_JaffaCakes118.dll
Network
Files
memory/2196-0-0x000000003BAF0000-0x000000003BC58000-memory.dmp
memory/2196-1-0x00000000004B0000-0x00000000004B2000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-04-15 05:32
Reported
2024-04-15 05:35
Platform
win10v2004-20240412-en
Max time kernel
135s
Max time network
140s
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\{7AFD00B9-30B5-43A5-B3D6-E42849B6016B} | C:\Windows\SysWOW64\regsvr32.exe | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\f06d4070ca1ac7e701c707d4f8eae2b2_JaffaCakes118.AAAAA\Clsid | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{7AFD00B9-30B5-43A5-B3D6-E42849B6016B}\ProgID\ = "f06d4070ca1ac7e701c707d4f8eae2b2_JaffaCakes118.AAAAA" | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{7AFD00B9-30B5-43A5-B3D6-E42849B6016B} | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{7AFD00B9-30B5-43A5-B3D6-E42849B6016B}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\f06d4070ca1ac7e701c707d4f8eae2b2_JaffaCakes118.dll" | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{7AFD00B9-30B5-43A5-B3D6-E42849B6016B}\InprocServer32\ThreadingModel = "Apartment" | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\f06d4070ca1ac7e701c707d4f8eae2b2_JaffaCakes118.AAAAA | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\.key | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\f06d4070ca1ac7e701c707d4f8eae2b2_JaffaCakes118.AAAAA\Clsid\ = "{7AFD00B9-30B5-43A5-B3D6-E42849B6016B}" | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{7AFD00B9-30B5-43A5-B3D6-E42849B6016B}\ProgID | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\.key\ = "regfile" | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{7AFD00B9-30B5-43A5-B3D6-E42849B6016B}\ = "CCCCCCC" | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{7AFD00B9-30B5-43A5-B3D6-E42849B6016B}\InprocServer32 | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\.key\ | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\f06d4070ca1ac7e701c707d4f8eae2b2_JaffaCakes118.AAAAA\ = "CCCCCCC" | C:\Windows\SysWOW64\regsvr32.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4928 wrote to memory of 3876 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 4928 wrote to memory of 3876 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 4928 wrote to memory of 3876 | 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\f06d4070ca1ac7e701c707d4f8eae2b2_JaffaCakes118.dll
C:\Windows\SysWOW64\regsvr32.exe
/s C:\Users\Admin\AppData\Local\Temp\f06d4070ca1ac7e701c707d4f8eae2b2_JaffaCakes118.dll
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 0.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 9.228.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| NL | 23.62.61.97:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | 97.61.62.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 21.114.53.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 157.123.68.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 65.139.73.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.205.248.87.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 22.236.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.16.208.104.in-addr.arpa | udp |
Files
memory/3876-0-0x000000003BAF0000-0x000000003BC58000-memory.dmp
memory/3876-1-0x0000000002D70000-0x0000000002D72000-memory.dmp