Analysis Overview
SHA256
7e3410538c1117e54546c7bec64e4f9268b25adf77aee53f4097ac92550feb89
Threat Level: Known bad
The file e39bc371b904aec26b48a16e86671735_JaffaCakes118 was found to be: Known bad.
Malicious Activity Summary
Modifies WinLogon for persistence
Adds Run key to start application
Suspicious use of SetThreadContext
Unsigned PE
Program crash
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-04-07 00:05
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-04-07 00:05
Reported
2024-04-07 00:08
Platform
win7-20240221-en
Max time kernel
146s
Max time network
153s
Command Line
Signatures
Modifies WinLogon for persistence
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\AppData\\Local\\Temp\\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe" | C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe C:\\Users\\Admin\\AppData\\Local\\Temp\\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe" | C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\svchoste = "C:\\Users\\Admin\\AppData\\Local\\Temp\\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe" | C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2240 set thread context of 2364 | N/A | C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe | C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe |
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe"
C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe"
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2240 -s 120
Network
| Country | Destination | Domain | Proto |
| US | 66.148.72.8:5678 | tcp | |
| US | 66.148.72.8:5678 | tcp | |
| US | 66.148.72.8:5678 | tcp | |
| US | 66.148.72.8:5678 | tcp | |
| US | 66.148.72.8:5678 | tcp | |
| US | 66.148.72.8:5678 | tcp | |
| US | 66.148.72.8:5678 | tcp | |
| US | 66.148.72.8:5678 | tcp | |
| US | 66.148.72.8:5678 | tcp | |
| US | 66.148.72.8:5678 | tcp | |
| US | 66.148.72.8:5678 | tcp | |
| US | 66.148.72.8:5678 | tcp | |
| US | 66.148.72.8:5678 | tcp |
Files
memory/2240-0-0x0000000000400000-0x0000000000434000-memory.dmp
memory/2364-1-0x0000000000400000-0x0000000000417000-memory.dmp
memory/2240-2-0x0000000000230000-0x0000000000264000-memory.dmp
memory/2364-4-0x0000000000400000-0x0000000000417000-memory.dmp
memory/2364-5-0x0000000000400000-0x0000000000417000-memory.dmp
memory/2364-6-0x0000000000400000-0x0000000000417000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-04-07 00:05
Reported
2024-04-07 00:08
Platform
win10v2004-20240226-en
Max time kernel
145s
Max time network
149s
Command Line
Signatures
Modifies WinLogon for persistence
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\AppData\\Local\\Temp\\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe" | C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe C:\\Users\\Admin\\AppData\\Local\\Temp\\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe" | C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\svchoste = "C:\\Users\\Admin\\AppData\\Local\\Temp\\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe" | C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 1368 set thread context of 4320 | N/A | C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe | C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe |
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe"
C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e39bc371b904aec26b48a16e86671735_JaffaCakes118.exe"
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 1368 -ip 1368
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1368 -s 344
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 28.118.140.52.in-addr.arpa | udp |
| US | 66.148.72.8:5678 | tcp | |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 4.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 183.142.211.20.in-addr.arpa | udp |
| US | 66.148.72.8:5678 | tcp | |
| US | 66.148.72.8:5678 | tcp | |
| US | 8.8.8.8:53 | 50.23.12.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 206.23.85.13.in-addr.arpa | udp |
| US | 66.148.72.8:5678 | tcp | |
| US | 66.148.72.8:5678 | tcp | |
| US | 66.148.72.8:5678 | tcp | |
| US | 8.8.8.8:53 | 56.126.166.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 56.126.166.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 2.36.159.162.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 86.23.85.13.in-addr.arpa | udp |
| US | 66.148.72.8:5678 | tcp | |
| US | 66.148.72.8:5678 | tcp | |
| US | 8.8.8.8:53 | 11.227.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 105.83.221.88.in-addr.arpa | udp |
| US | 66.148.72.8:5678 | tcp | |
| US | 66.148.72.8:5678 | tcp | |
| US | 66.148.72.8:5678 | tcp | |
| US | 66.148.72.8:5678 | tcp | |
| US | 66.148.72.8:5678 | tcp |
Files
memory/1368-0-0x0000000000400000-0x0000000000434000-memory.dmp
memory/4320-1-0x0000000000400000-0x0000000000417000-memory.dmp
memory/4320-3-0x0000000000400000-0x0000000000417000-memory.dmp
memory/4320-4-0x0000000000400000-0x0000000000417000-memory.dmp
memory/1368-5-0x0000000000400000-0x0000000000434000-memory.dmp