Analysis Overview
SHA256
401b2c3651b6f7aded8c3a691c7852aeae6a18798dafc0d727e93aff776ac52f
Threat Level: Shows suspicious behavior
The file f19008d768186f383e4689279af615e6_JaffaCakes118 was found to be: Shows suspicious behavior.
Malicious Activity Summary
ACProtect 1.3x - 1.4x DLL software
UPX packed file
Checks computer location settings
Deletes itself
Loads dropped DLL
Installs/modifies Browser Helper Object
Drops file in System32 directory
Unsigned PE
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
Modifies registry class
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-04-15 17:10
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-04-15 17:10
Reported
2024-04-15 17:12
Platform
win7-20240221-en
Max time kernel
120s
Max time network
126s
Command Line
Signatures
ACProtect 1.3x - 1.4x DLL software
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Deletes itself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\cmd.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\regsvr32.exe | N/A |
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Installs/modifies Browser Helper Object
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects | C:\Users\Admin\AppData\Local\Temp\f19008d768186f383e4689279af615e6_JaffaCakes118.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{890C7964-9320-4055-BE11-7D7B562A6417} | C:\Users\Admin\AppData\Local\Temp\f19008d768186f383e4689279af615e6_JaffaCakes118.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\SysWOW64\helper.xml | C:\Users\Admin\AppData\Local\Temp\f19008d768186f383e4689279af615e6_JaffaCakes118.exe | N/A |
| File created | C:\Windows\SysWOW64\mstrans.dll | C:\Users\Admin\AppData\Local\Temp\f19008d768186f383e4689279af615e6_JaffaCakes118.exe | N/A |
Enumerates physical storage devices
Modifies registry class
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{890C7964-9320-4055-BE11-7D7B562A6417}\VersionIndependentProgID\ = "Helper.Helper.1" | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{890C7964-9320-4055-BE11-7D7B562A6417}\InprocServer32 | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{890C7964-9320-4055-BE11-7D7B562A6417}\InprocServer32\ = "C:\\Windows\\SysWOW64\\mstrans.dll" | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{890C7964-9320-4055-BE11-7D7B562A6417}\InprocServer32\ThreadingModel = "Apartment" | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{890C7964-9320-4055-BE11-7D7B562A6417}\ProgID\ = "Helper.Helper.1" | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{890C7964-9320-4055-BE11-7D7B562A6417}\TypeLib | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{890C7964-9320-4055-BE11-7D7B562A6417}\TypeLib\ = "{C96aC303-ADB0-4f4b-BBAA-D037694D3590}" | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{890C7964-9320-4055-BE11-7D7B562A6417} | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{890C7964-9320-4055-BE11-7D7B562A6417}\ = "Helper Class" | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{890C7964-9320-4055-BE11-7D7B562A6417}\ProgID | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{890C7964-9320-4055-BE11-7D7B562A6417}\Programmable | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{890C7964-9320-4055-BE11-7D7B562A6417}\VersionIndependentProgID | C:\Windows\SysWOW64\regsvr32.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\f19008d768186f383e4689279af615e6_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f19008d768186f383e4689279af615e6_JaffaCakes118.exe"
C:\Windows\SysWOW64\regsvr32.exe
"C:\Windows\System32\regsvr32.exe" /s mstrans.dll
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\F19008~1.EXE >> NUL
Network
Files
C:\Windows\SysWOW64\mstrans.dll
| MD5 | fb27d1cac152992654ae662e34f5b350 |
| SHA1 | 4af2613c8772adf849bc099cf7e931f378a48d37 |
| SHA256 | a541d24d0c3713d22a21b2310ebf170929f10371a4528fd5ab1181f7f622aab2 |
| SHA512 | ace64a4efe00ef589ccfbb8c83a2d3fbb3c9e55665c98195f523e8ec54e59d0f1a4576603c4fe6b8d2d0491b8b5ce45f3c69d254f6912ea2c56fd85a8d789c1f |
memory/848-4-0x0000000020000000-0x0000000020023000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-04-15 17:10
Reported
2024-04-15 17:12
Platform
win10v2004-20240412-en
Max time kernel
150s
Max time network
152s
Command Line
Signatures
ACProtect 1.3x - 1.4x DLL software
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-4084619521-2220719027-1909462854-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\f19008d768186f383e4689279af615e6_JaffaCakes118.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\regsvr32.exe | N/A |
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Installs/modifies Browser Helper Object
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects | C:\Users\Admin\AppData\Local\Temp\f19008d768186f383e4689279af615e6_JaffaCakes118.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{890C7964-9320-4055-BE11-7D7B562A6417} | C:\Users\Admin\AppData\Local\Temp\f19008d768186f383e4689279af615e6_JaffaCakes118.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\SysWOW64\helper.xml | C:\Users\Admin\AppData\Local\Temp\f19008d768186f383e4689279af615e6_JaffaCakes118.exe | N/A |
| File created | C:\Windows\SysWOW64\mstrans.dll | C:\Users\Admin\AppData\Local\Temp\f19008d768186f383e4689279af615e6_JaffaCakes118.exe | N/A |
Enumerates physical storage devices
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{890C7964-9320-4055-BE11-7D7B562A6417}\ProgID | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{890C7964-9320-4055-BE11-7D7B562A6417}\TypeLib\ = "{C96aC303-ADB0-4f4b-BBAA-D037694D3590}" | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{890C7964-9320-4055-BE11-7D7B562A6417}\VersionIndependentProgID | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{890C7964-9320-4055-BE11-7D7B562A6417}\VersionIndependentProgID\ = "Helper.Helper.1" | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{890C7964-9320-4055-BE11-7D7B562A6417} | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{890C7964-9320-4055-BE11-7D7B562A6417}\ = "Helper Class" | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{890C7964-9320-4055-BE11-7D7B562A6417}\InprocServer32\ = "C:\\Windows\\SysWow64\\mstrans.dll" | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{890C7964-9320-4055-BE11-7D7B562A6417}\Programmable | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{890C7964-9320-4055-BE11-7D7B562A6417}\TypeLib | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{890C7964-9320-4055-BE11-7D7B562A6417}\InprocServer32 | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{890C7964-9320-4055-BE11-7D7B562A6417}\InprocServer32\ThreadingModel = "Apartment" | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{890C7964-9320-4055-BE11-7D7B562A6417}\ProgID\ = "Helper.Helper.1" | C:\Windows\SysWOW64\regsvr32.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 3272 wrote to memory of 2144 | N/A | C:\Users\Admin\AppData\Local\Temp\f19008d768186f383e4689279af615e6_JaffaCakes118.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 3272 wrote to memory of 2144 | N/A | C:\Users\Admin\AppData\Local\Temp\f19008d768186f383e4689279af615e6_JaffaCakes118.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 3272 wrote to memory of 2144 | N/A | C:\Users\Admin\AppData\Local\Temp\f19008d768186f383e4689279af615e6_JaffaCakes118.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 3272 wrote to memory of 1936 | N/A | C:\Users\Admin\AppData\Local\Temp\f19008d768186f383e4689279af615e6_JaffaCakes118.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 3272 wrote to memory of 1936 | N/A | C:\Users\Admin\AppData\Local\Temp\f19008d768186f383e4689279af615e6_JaffaCakes118.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 3272 wrote to memory of 1936 | N/A | C:\Users\Admin\AppData\Local\Temp\f19008d768186f383e4689279af615e6_JaffaCakes118.exe | C:\Windows\SysWOW64\cmd.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\f19008d768186f383e4689279af615e6_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f19008d768186f383e4689279af615e6_JaffaCakes118.exe"
C:\Windows\SysWOW64\regsvr32.exe
"C:\Windows\System32\regsvr32.exe" /s mstrans.dll
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\F19008~1.EXE >> NUL
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 68.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 204.79.197.237:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 9.228.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 237.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 101.58.20.217.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 55.36.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 21.114.53.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 50.23.12.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 171.39.242.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 98.58.20.217.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 82.90.14.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 29.243.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 40.173.79.40.in-addr.arpa | udp |
Files
C:\Windows\SysWOW64\mstrans.dll
| MD5 | fb27d1cac152992654ae662e34f5b350 |
| SHA1 | 4af2613c8772adf849bc099cf7e931f378a48d37 |
| SHA256 | a541d24d0c3713d22a21b2310ebf170929f10371a4528fd5ab1181f7f622aab2 |
| SHA512 | ace64a4efe00ef589ccfbb8c83a2d3fbb3c9e55665c98195f523e8ec54e59d0f1a4576603c4fe6b8d2d0491b8b5ce45f3c69d254f6912ea2c56fd85a8d789c1f |
memory/2144-4-0x0000000020000000-0x0000000020023000-memory.dmp