Analysis Overview
SHA256
027928f26bcae467a2b5b544e8113736ea570250bada6667ade0cdf4671344ba
Threat Level: Known bad
The file db2b3214c1547975da73045e9c38e8fa88e0b3315c5c5997c7b79d1d44435f42.zip was found to be: Known bad.
Malicious Activity Summary
Cobalt Strike reflective loader
Cobaltstrike family
Program crash
System Location Discovery: System Language Discovery
Unsigned PE
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-08-07 01:15
Signatures
Cobalt Strike reflective loader
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Cobaltstrike family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-08-07 01:15
Reported
2024-08-07 01:18
Platform
win7-20240704-en
Max time kernel
122s
Max time network
123s
Command Line
Signatures
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Windows\SysWOW64\rundll32.exe |
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | 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\db2b3214c1547975da73045e9c38e8fa88e0b3315c5c5997c7b79d1d44435f42.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\db2b3214c1547975da73045e9c38e8fa88e0b3315c5c5997c7b79d1d44435f42.dll,#1
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2532 -s 240
Network
Files
Analysis: behavioral2
Detonation Overview
Submitted
2024-08-07 01:15
Reported
2024-08-07 01:18
Platform
win10v2004-20240802-en
Max time kernel
93s
Max time network
126s
Command Line
Signatures
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Windows\SysWOW64\rundll32.exe |
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\rundll32.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1644 wrote to memory of 2584 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1644 wrote to memory of 2584 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1644 wrote to memory of 2584 | 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\db2b3214c1547975da73045e9c38e8fa88e0b3315c5c5997c7b79d1d44435f42.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\db2b3214c1547975da73045e9c38e8fa88e0b3315c5c5997c7b79d1d44435f42.dll,#1
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 2584 -ip 2584
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2584 -s 680
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 13.107.21.237:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 75.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 79.190.18.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 237.21.107.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 43.58.199.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 86.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.205.248.87.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 13.227.111.52.in-addr.arpa | udp |