Analysis Overview
SHA256
646ab5eb6224824f04f4b78b80f47e2b7251c8ad9af55d806f7a016403f2fa45
Threat Level: Known bad
The file unpacked_gozi_sample.exe was found to be: Known bad.
Malicious Activity Summary
Gozi family
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Analysis: static1
Detonation Overview
Reported
2023-03-21 11:06
Signatures
Gozi family
Analysis: behavioral2
Detonation Overview
Submitted
2023-03-21 11:06
Reported
2023-03-21 11:08
Platform
win10v2004-20230220-en
Max time kernel
146s
Max time network
125s
Command Line
Signatures
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4904 wrote to memory of 4120 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 4904 wrote to memory of 4120 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 4904 wrote to memory of 4120 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
Processes
C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\unpacked_gozi_sample.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\unpacked_gozi_sample.dll,#1
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 104.219.191.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 76.38.195.152.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 39.146.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 199.176.139.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 133.211.185.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 13.86.106.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 56.126.166.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 226.101.242.52.in-addr.arpa | udp |
| IE | 13.69.239.73:443 | tcp | |
| NL | 8.238.178.254:80 | tcp | |
| NL | 8.238.178.254:80 | tcp | |
| NL | 8.238.178.254:80 | tcp | |
| NL | 173.223.113.164:443 | tcp | |
| NL | 173.223.113.131:80 | tcp | |
| US | 131.253.33.203:80 | tcp | |
| US | 8.8.8.8:53 | 63.13.109.52.in-addr.arpa | udp |
| US | 93.184.221.240:80 | tcp | |
| US | 8.8.8.8:53 | 210.81.184.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 216.74.101.95.in-addr.arpa | udp |
Files
Analysis: behavioral1
Detonation Overview
Submitted
2023-03-21 11:06
Reported
2023-03-21 11:08
Platform
win7-20230220-en
Max time kernel
31s
Max time network
33s
Command Line
Signatures
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1536 wrote to memory of 1616 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1536 wrote to memory of 1616 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1536 wrote to memory of 1616 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1536 wrote to memory of 1616 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1536 wrote to memory of 1616 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1536 wrote to memory of 1616 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1536 wrote to memory of 1616 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
Processes
C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\unpacked_gozi_sample.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\unpacked_gozi_sample.dll,#1