Analysis Overview
SHA256
25705af0a5b07fd75329f3f060a77849aab5c4a2bb93c4d3d5b4e30cdc7c5493
Threat Level: Shows suspicious behavior
The file 03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118 was found to be: Shows suspicious behavior.
Malicious Activity Summary
ASPack v2.12-2.42
Loads dropped DLL
Adds Run key to start application
Installs/modifies Browser Helper Object
Drops file in System32 directory
Unsigned PE
Program crash
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
Modifies registry class
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-06-20 06:41
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
2024-06-20 06:41
Reported
2024-06-20 06:44
Platform
win7-20231129-en
Max time kernel
118s
Max time network
118s
Command Line
Signatures
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Users\Admin\AppData\Local\Temp\03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118.exe |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2232 wrote to memory of 2892 | N/A | C:\Users\Admin\AppData\Local\Temp\03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118.exe | C:\Windows\SysWOW64\WerFault.exe |
| PID 2232 wrote to memory of 2892 | N/A | C:\Users\Admin\AppData\Local\Temp\03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118.exe | C:\Windows\SysWOW64\WerFault.exe |
| PID 2232 wrote to memory of 2892 | N/A | C:\Users\Admin\AppData\Local\Temp\03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118.exe | C:\Windows\SysWOW64\WerFault.exe |
| PID 2232 wrote to memory of 2892 | N/A | C:\Users\Admin\AppData\Local\Temp\03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118.exe | C:\Windows\SysWOW64\WerFault.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118.exe"
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2232 -s 96
Network
Files
memory/2232-0-0x0000000000400000-0x00000000004AC000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-20 06:41
Reported
2024-06-20 06:44
Platform
win10v2004-20240508-en
Max time kernel
149s
Max time network
151s
Command Line
Signatures
ASPack v2.12-2.42
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2804150937-2146708401-419095071-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\EO0CRKl = "C:\\Windows\\system32\\EO0CRKl.exe" | C:\Users\Admin\AppData\Local\Temp\03b9785568f7a6fd0b5a1f4ea78452c1_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\{94AC7942-7BE1-4FB9-A7CA-67CD88362758} | C:\Windows\SysWOW64\regsvr32.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\SysWOW64\EO0CRKl10.dll | C:\Users\Admin\AppData\Local\Temp\03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\EO0CRKl.exe | C:\Users\Admin\AppData\Local\Temp\03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118.exe | N/A |
| File created | C:\Windows\SysWOW64\EO0CRKl.exe | C:\Users\Admin\AppData\Local\Temp\03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\EO0CRKl20.dll | C:\Users\Admin\AppData\Local\Temp\03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118.exe | N/A |
| File created | C:\Windows\SysWOW64\EO0CRKl20.dll | C:\Users\Admin\AppData\Local\Temp\03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\EO0CRKl10.dll | C:\Users\Admin\AppData\Local\Temp\03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118.exe | N/A |
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Users\Admin\AppData\Local\Temp\03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118.exe |
Modifies registry class
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{94AC7948-7BE1-4FB9-A7CA-67CD88362758}\1.0\FLAGS\ = "0" | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{94AC7941-7BE1-4FB9-A7CA-67CD88362758} | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{94AC7942-7BE1-4FB9-A7CA-67CD88362758}\InprocServer32 | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{94AC7942-7BE1-4FB9-A7CA-67CD88362758}\InprocServer32\ThreadingModel = "Apartment" | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{94AC7948-7BE1-4FB9-A7CA-67CD88362758}\1.0 | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{94AC7948-7BE1-4FB9-A7CA-67CD88362758}\1.0\ = "IEHelper 1.0 Type Library" | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{94AC7941-7BE1-4FB9-A7CA-67CD88362758}\ProxyStubClsid32 | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\IEHlprObj.IEHlprObj.1 | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\IEHlprObj.IEHlprObj | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{94AC7942-7BE1-4FB9-A7CA-67CD88362758}\ = "IEHlprObj Class" | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{94AC7942-7BE1-4FB9-A7CA-67CD88362758}\VersionIndependentProgID | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\IEHlprObj.IEHlprObj\ = "IEHlprObj Class" | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{94AC7941-7BE1-4FB9-A7CA-67CD88362758}\TypeLib\ = "{94AC7948-7BE1-4FB9-A7CA-67CD88362758}" | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{94AC7941-7BE1-4FB9-A7CA-67CD88362758}\TypeLib\Version = "1.0" | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{94AC7941-7BE1-4FB9-A7CA-67CD88362758}\TypeLib | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\IEHlprObj.IEHlprObj.1\ = "IEHlprObj Class" | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\IEHlprObj.IEHlprObj.1\CLSID | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{94AC7942-7BE1-4FB9-A7CA-67CD88362758}\InprocServer32\ = "C:\\Windows\\SysWow64\\EO0CRKl20.dll" | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{94AC7941-7BE1-4FB9-A7CA-67CD88362758} | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{94AC7941-7BE1-4FB9-A7CA-67CD88362758}\ = "IIEHlprObj" | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{94AC7941-7BE1-4FB9-A7CA-67CD88362758}\ = "IIEHlprObj" | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{94AC7941-7BE1-4FB9-A7CA-67CD88362758}\ProxyStubClsid32 | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{94AC7941-7BE1-4FB9-A7CA-67CD88362758}\TypeLib | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{94AC7941-7BE1-4FB9-A7CA-67CD88362758}\TypeLib\ = "{94AC7948-7BE1-4FB9-A7CA-67CD88362758}" | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\IEHlprObj.IEHlprObj\CurVer | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\IEHlprObj.IEHlprObj\CurVer\ = "IEHlprObj.IEHlprObj.1" | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{94AC7942-7BE1-4FB9-A7CA-67CD88362758}\VersionIndependentProgID\ = "IEHlprObj.IEHlprObj" | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{94AC7948-7BE1-4FB9-A7CA-67CD88362758}\1.0\0\win32\ = "C:\\Windows\\SysWow64\\EO0CRKl20.dll" | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{94AC7948-7BE1-4FB9-A7CA-67CD88362758}\1.0\0\win32 | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{94AC7948-7BE1-4FB9-A7CA-67CD88362758}\1.0\HELPDIR\ = "C:\\Windows\\SysWow64\\" | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{94AC7941-7BE1-4FB9-A7CA-67CD88362758}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{94AC7941-7BE1-4FB9-A7CA-67CD88362758}\TypeLib\Version = "1.0" | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{94AC7942-7BE1-4FB9-A7CA-67CD88362758} | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{94AC7942-7BE1-4FB9-A7CA-67CD88362758}\ProgID | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{94AC7942-7BE1-4FB9-A7CA-67CD88362758}\Programmable | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{94AC7948-7BE1-4FB9-A7CA-67CD88362758}\1.0\0 | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{94AC7948-7BE1-4FB9-A7CA-67CD88362758}\1.0\HELPDIR | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{94AC7941-7BE1-4FB9-A7CA-67CD88362758}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\IEHlprObj.IEHlprObj.1\CLSID\ = "{94AC7942-7BE1-4FB9-A7CA-67CD88362758}" | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{94AC7942-7BE1-4FB9-A7CA-67CD88362758}\ProgID\ = "IEHlprObj.IEHlprObj.1" | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{94AC7948-7BE1-4FB9-A7CA-67CD88362758} | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{94AC7948-7BE1-4FB9-A7CA-67CD88362758}\1.0\FLAGS | C:\Windows\SysWOW64\regsvr32.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 3524 wrote to memory of 2964 | N/A | C:\Users\Admin\AppData\Local\Temp\03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 3524 wrote to memory of 2964 | N/A | C:\Users\Admin\AppData\Local\Temp\03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 3524 wrote to memory of 2964 | N/A | C:\Users\Admin\AppData\Local\Temp\03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 3524 wrote to memory of 3512 | N/A | C:\Users\Admin\AppData\Local\Temp\03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118.exe | C:\Windows\Explorer.EXE |
Processes
C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
C:\Users\Admin\AppData\Local\Temp\03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118.exe"
C:\Windows\SysWOW64\regsvr32.exe
C:\Windows\system32\regsvr32.exe /s C:\Windows\system32\EO0CRKl20.dll
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 200 -p 3524 -ip 3524
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3524 -s 476
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 | 240.221.184.93.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 4.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 28.118.140.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 206.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 50.23.12.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 4.173.189.20.in-addr.arpa | udp |
Files
memory/3524-0-0x0000000000400000-0x00000000004AC000-memory.dmp
C:\Windows\SysWOW64\EO0CRKl20.dll
| MD5 | 59cc50390cad44b281b20bb771c44835 |
| SHA1 | 62c941343233c001a6a095a33a60eb47d6f55500 |
| SHA256 | 4ae5bf8ef6335e5a06fa3232de43e50ee06f2c8d51c6a1e341d40cd03fb489b5 |
| SHA512 | 81401ee0fea1bfc543bf16d3cd4b785a70acc5f5c4dc15b737e46409c98d23a4f265a996444bd614529d4886a03916b76223023b874d91d3c4aab36c8e69bbac |
memory/2964-8-0x0000000010000000-0x000000001006F000-memory.dmp
C:\Windows\SysWOW64\EO0CRKl10.dll
| MD5 | 7daa7e8ae1b87690d652bd324d372a9b |
| SHA1 | 64606cbc9f319662f315d7fdf8a5ed8b9ec3f163 |
| SHA256 | 52669174c55fcd0fa6af47044205bee4d3d84bfdb85ad81574e2f45e39db98ff |
| SHA512 | e312f2c74dd31da7463fc525716c0f9935e11d60130eb232ea525ff8a35187fefbbf71fdb1c99b91507b5e7f41eb990f0e0196c3663903a2cca43e6774bdfd5c |
memory/3524-13-0x0000000010000000-0x0000000010077000-memory.dmp
memory/3524-14-0x0000000000400000-0x00000000004AC000-memory.dmp