Analysis Overview
SHA256
cabae4691cd4792f700d66561d624a3b3dac82518ac284925ac847e01c4bb5b7
Threat Level: Shows suspicious behavior
The file ef7332bf03fd1893e451d9a59ed8dc77_JaffaCakes118 was found to be: Shows suspicious behavior.
Malicious Activity Summary
Installs/modifies Browser Helper Object
Drops file in System32 directory
Unsigned PE
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-04-14 20:35
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral2
Detonation Overview
Submitted
2024-04-14 20:35
Reported
2024-04-14 20:38
Platform
win10v2004-20240412-en
Max time kernel
151s
Max time network
155s
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\{6A041F13-A111-12A3-B0CF-F99818AA68A6} | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{6A041F13-A111-12A3-B0CF-F99818AA68A6}\ = "zxmscwin.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\CLSID\{6A041F13-A111-12A3-B0CF-F99818AA68A6} | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6A041F13-A111-12A3-B0CF-F99818AA68A6}\InprocServer32\ = "C:\\Windows\\SysWow64\\zxmscwin.dll" | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6A041F13-A111-12A3-B0CF-F99818AA68A6}\InprocServer32\ThreadingModel = "Apartment" | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6A041F13-A111-12A3-B0CF-F99818AA68A6}\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 AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1864 wrote to memory of 2292 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1864 wrote to memory of 2292 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1864 wrote to memory of 2292 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2292 wrote to memory of 4720 | N/A | C:\Windows\SysWOW64\rundll32.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 2292 wrote to memory of 4720 | N/A | C:\Windows\SysWOW64\rundll32.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 2292 wrote to memory of 4720 | 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\ef7332bf03fd1893e451d9a59ed8dc77_JaffaCakes118.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ef7332bf03fd1893e451d9a59ed8dc77_JaffaCakes118.dll,#1
C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\~DFD240605656.bat
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 133.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 249.197.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.154.82.20.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 | 237.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 21.114.53.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.35.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 103.169.127.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 56.126.166.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 21.121.18.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.205.248.87.in-addr.arpa | udp |
| US | 52.111.227.13:443 | tcp | |
| US | 8.8.8.8:53 | 48.229.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 252.15.104.51.in-addr.arpa | udp |
Files
C:\Users\Admin\AppData\Local\Temp\~DFD240605656.bat
| MD5 | 09517fc62284f33e877a276463580bd1 |
| SHA1 | 0b14fe1db4493818f9de0bf2a56ee5370b8d479a |
| SHA256 | 6cc6bbb1f3f754b6894d84130f5f2d86569ac3a603e1632d3cefa028f22b6238 |
| SHA512 | 1b924dd216d0f38199cc6df215e65ff260aa48fa37aa620dabcbc616f434643bd1f2e617d66b14bd52900214148741565128ba9589782ba582fd7308369f4a4d |
Analysis: behavioral1
Detonation Overview
Submitted
2024-04-14 20:35
Reported
2024-04-14 20:38
Platform
win7-20240221-en
Max time kernel
152s
Max time network
130s
Command Line
Signatures
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 |
Suspicious use of WriteProcessMemory
Processes
C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ef7332bf03fd1893e451d9a59ed8dc77_JaffaCakes118.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ef7332bf03fd1893e451d9a59ed8dc77_JaffaCakes118.dll,#1
C:\Windows\SysWOW64\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\~DFD259417291.bat
Network
Files
C:\Users\Admin\AppData\Local\Temp\~DFD259417291.bat
| MD5 | 09517fc62284f33e877a276463580bd1 |
| SHA1 | 0b14fe1db4493818f9de0bf2a56ee5370b8d479a |
| SHA256 | 6cc6bbb1f3f754b6894d84130f5f2d86569ac3a603e1632d3cefa028f22b6238 |
| SHA512 | 1b924dd216d0f38199cc6df215e65ff260aa48fa37aa620dabcbc616f434643bd1f2e617d66b14bd52900214148741565128ba9589782ba582fd7308369f4a4d |