Analysis Overview
SHA256
87b9a803fb991bd9e508b55bb01fb657e505d7bd077bc18ce13d0ea518f202fd
Threat Level: Known bad
The file a1cbb55f6316a7a7ef379e9b09802835 was found to be: Known bad.
Malicious Activity Summary
Cobaltstrike
Suspicious use of SetThreadContext
Unsigned PE
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Analysis: static1
Detonation Overview
Reported
2024-02-24 11:48
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-02-24 11:48
Reported
2024-02-24 11:51
Platform
win7-20240221-en
Max time kernel
118s
Max time network
120s
Command Line
Signatures
Cobaltstrike
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2300 set thread context of 1828 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\system32\rundll32.exe |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2300 wrote to memory of 1828 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\system32\rundll32.exe |
| PID 2300 wrote to memory of 1828 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\system32\rundll32.exe |
| PID 2300 wrote to memory of 1828 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\system32\rundll32.exe |
| PID 2300 wrote to memory of 1828 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\system32\rundll32.exe |
| PID 2300 wrote to memory of 1828 | 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\a1cbb55f6316a7a7ef379e9b09802835.dll,#1
C:\Windows\system32\rundll32.exe
C:\Windows\system32\rundll32.exe
Network
Files
memory/1828-0-0x0000000000400000-0x0000000000452000-memory.dmp
memory/1828-2-0x000007FFFFFDE000-0x000007FFFFFDF000-memory.dmp
memory/1828-4-0x0000000000400000-0x0000000000452000-memory.dmp
memory/1828-6-0x0000000000400000-0x0000000000452000-memory.dmp
memory/1828-7-0x0000000000400000-0x0000000000452000-memory.dmp
memory/1828-9-0x0000000000150000-0x0000000000191000-memory.dmp
memory/1828-11-0x000007FEF7160000-0x000007FEF7200000-memory.dmp
memory/1828-12-0x0000000000400000-0x0000000000452000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-02-24 11:48
Reported
2024-02-24 11:51
Platform
win10v2004-20240221-en
Max time kernel
92s
Max time network
126s
Command Line
Signatures
Cobaltstrike
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 3080 set thread context of 872 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\system32\rundll32.exe |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 3080 wrote to memory of 872 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\system32\rundll32.exe |
| PID 3080 wrote to memory of 872 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\system32\rundll32.exe |
| PID 3080 wrote to memory of 872 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\system32\rundll32.exe |
| PID 3080 wrote to memory of 872 | 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\a1cbb55f6316a7a7ef379e9b09802835.dll,#1
C:\Windows\system32\rundll32.exe
C:\Windows\system32\rundll32.exe
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 204.79.197.200:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 200.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 180.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 69.31.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 88.156.103.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 9.228.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 41.110.16.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 103.169.127.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 56.126.166.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 217.135.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 194.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 43.229.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 173.178.17.96.in-addr.arpa | udp |
Files
memory/872-0-0x0000000000400000-0x0000000000452000-memory.dmp
memory/872-2-0x0000000000400000-0x0000000000452000-memory.dmp
memory/872-4-0x0000000000400000-0x0000000000452000-memory.dmp
memory/872-6-0x00000243E1920000-0x00000243E1961000-memory.dmp
memory/872-8-0x00007FFC3B460000-0x00007FFC3B510000-memory.dmp
memory/872-9-0x0000000000400000-0x0000000000452000-memory.dmp