Analysis Overview
SHA256
bf52ccc86b26d14f7804c49a65026df04b1dbb2e02c95ea3ef0b3611d0fb2c93
Threat Level: Known bad
The file bf52ccc86b26d14f7804c49a65026df04b1dbb2e02c95ea3ef0b3611d0fb2c93 was found to be: Known bad.
Malicious Activity Summary
Cobaltstrike family
Cobaltstrike
Blocklisted process makes network request
Suspicious use of SetThreadContext
Unsigned PE
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Analysis: static1
Detonation Overview
Reported
2024-07-24 11:52
Signatures
Cobaltstrike family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-07-24 11:52
Reported
2024-07-24 11:54
Platform
win7-20240704-en
Max time kernel
148s
Max time network
154s
Command Line
Signatures
Cobaltstrike
Blocklisted process makes network request
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\rundll32.exe | N/A |
| N/A | N/A | C:\Windows\system32\rundll32.exe | N/A |
| N/A | N/A | C:\Windows\system32\rundll32.exe | N/A |
| N/A | N/A | C:\Windows\system32\rundll32.exe | N/A |
| N/A | N/A | C:\Windows\system32\rundll32.exe | N/A |
| N/A | N/A | C:\Windows\system32\rundll32.exe | N/A |
| N/A | N/A | C:\Windows\system32\rundll32.exe | N/A |
| N/A | N/A | C:\Windows\system32\rundll32.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 1356 set thread context of 3060 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\system32\rundll32.exe |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1356 wrote to memory of 3060 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\system32\rundll32.exe |
| PID 1356 wrote to memory of 3060 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\system32\rundll32.exe |
| PID 1356 wrote to memory of 3060 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\system32\rundll32.exe |
| PID 1356 wrote to memory of 3060 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\system32\rundll32.exe |
Processes
C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\bf52ccc86b26d14f7804c49a65026df04b1dbb2e02c95ea3ef0b3611d0fb2c93.dll,#1
C:\Windows\system32\rundll32.exe
rundll32.exe
Network
| Country | Destination | Domain | Proto |
| CN | 124.70.34.71:2333 | tcp | |
| CN | 124.70.34.71:2333 | tcp | |
| CN | 124.70.34.71:2333 | tcp | |
| CN | 124.70.34.71:2333 | tcp | |
| CN | 124.70.34.71:2333 | tcp | |
| CN | 124.70.34.71:2333 | tcp | |
| CN | 124.70.34.71:2333 | tcp | |
| CN | 124.70.34.71:2333 | tcp |
Files
memory/3060-0-0x0000000000060000-0x0000000000061000-memory.dmp
memory/3060-2-0x0000000000060000-0x0000000000061000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-07-24 11:52
Reported
2024-07-24 11:54
Platform
win10v2004-20240709-en
Max time kernel
147s
Max time network
149s
Command Line
Signatures
Cobaltstrike
Blocklisted process makes network request
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\rundll32.exe | N/A |
| N/A | N/A | C:\Windows\system32\rundll32.exe | N/A |
| N/A | N/A | C:\Windows\system32\rundll32.exe | N/A |
| N/A | N/A | C:\Windows\system32\rundll32.exe | N/A |
| N/A | N/A | C:\Windows\system32\rundll32.exe | N/A |
| N/A | N/A | C:\Windows\system32\rundll32.exe | N/A |
| N/A | N/A | C:\Windows\system32\rundll32.exe | N/A |
| N/A | N/A | C:\Windows\system32\rundll32.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 3580 set thread context of 3776 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\system32\rundll32.exe |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 3580 wrote to memory of 3776 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\system32\rundll32.exe |
| PID 3580 wrote to memory of 3776 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\system32\rundll32.exe |
| PID 3580 wrote to memory of 3776 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\system32\rundll32.exe |
Processes
C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\bf52ccc86b26d14f7804c49a65026df04b1dbb2e02c95ea3ef0b3611d0fb2c93.dll,#1
C:\Windows\system32\rundll32.exe
rundll32.exe
Network
| Country | Destination | Domain | Proto |
| CN | 124.70.34.71:2333 | tcp | |
| US | 8.8.8.8:53 | 134.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 183.142.211.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 57.169.31.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 133.211.185.52.in-addr.arpa | udp |
| CN | 124.70.34.71:2333 | tcp | |
| US | 8.8.8.8:53 | 157.123.68.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 206.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 107.12.20.2.in-addr.arpa | udp |
| CN | 124.70.34.71:2333 | tcp | |
| US | 8.8.8.8:53 | 172.214.232.199.in-addr.arpa | udp |
| CN | 124.70.34.71:2333 | tcp | |
| US | 8.8.8.8:53 | 88.156.103.20.in-addr.arpa | udp |
| CN | 124.70.34.71:2333 | tcp | |
| US | 8.8.8.8:53 | 23.236.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| CN | 124.70.34.71:2333 | tcp | |
| CN | 124.70.34.71:2333 | tcp | |
| CN | 124.70.34.71:2333 | tcp |
Files
memory/3776-0-0x000001E813480000-0x000001E813481000-memory.dmp