Analysis Overview
SHA256
55ae63c450b0369a4688e750491e8c2c69cd841600b7b3c0333fcf92f5e3d438
Threat Level: Likely benign
The file 2024-06-13_89856a64586762e171e80b49b9e2667c_cobalt-strike_ryuk was found to be: Likely benign.
Malicious Activity Summary
Unsigned PE
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Analysis: static1
Detonation Overview
Reported
2024-06-13 13:34
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-06-13 13:34
Reported
2024-06-13 13:37
Platform
win7-20240221-en
Max time kernel
122s
Max time network
123s
Command Line
Signatures
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 112 wrote to memory of 1732 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-13_89856a64586762e171e80b49b9e2667c_cobalt-strike_ryuk.exe | C:\Windows\system32\WerFault.exe |
| PID 112 wrote to memory of 1732 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-13_89856a64586762e171e80b49b9e2667c_cobalt-strike_ryuk.exe | C:\Windows\system32\WerFault.exe |
| PID 112 wrote to memory of 1732 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-13_89856a64586762e171e80b49b9e2667c_cobalt-strike_ryuk.exe | C:\Windows\system32\WerFault.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-06-13_89856a64586762e171e80b49b9e2667c_cobalt-strike_ryuk.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-13_89856a64586762e171e80b49b9e2667c_cobalt-strike_ryuk.exe"
C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -u -p 112 -s 28
Network
Files
memory/112-1-0x00000000002E0000-0x00000000003E0000-memory.dmp
memory/112-2-0x00000000002E0000-0x00000000003E0000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-13 13:34
Reported
2024-06-13 13:37
Platform
win10v2004-20240611-en
Max time kernel
93s
Max time network
94s
Command Line
Signatures
Processes
C:\Users\Admin\AppData\Local\Temp\2024-06-13_89856a64586762e171e80b49b9e2667c_cobalt-strike_ryuk.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-13_89856a64586762e171e80b49b9e2667c_cobalt-strike_ryuk.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 13.107.22.237:443 | g.bing.com | tcp |
| BE | 23.41.178.32:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | 237.22.107.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 32.178.41.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.165.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.31.95.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 35.15.31.184.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 100.58.20.217.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 14.227.111.52.in-addr.arpa | udp |
Files
memory/3492-1-0x000001EF1F500000-0x000001EF1F600000-memory.dmp