Analysis Overview
SHA256
a21619b981f4e2b4a1858f0457b42491ef99688278816a66e0652d745e110bb9
Threat Level: Known bad
The file A21619B981F4E2B4A1858F0457B42491EF99688278816.exe was found to be: Known bad.
Malicious Activity Summary
Systembc family
Drops file in Windows directory
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Analysis: static1
Detonation Overview
Reported
2023-04-05 19:11
Signatures
Systembc family
Analysis: behavioral1
Detonation Overview
Submitted
2023-04-05 19:11
Reported
2023-04-05 19:13
Platform
win7-20230220-en
Max time kernel
124s
Max time network
129s
Command Line
Signatures
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\Tasks\wow64.job | C:\Users\Admin\AppData\Local\Temp\A21619B981F4E2B4A1858F0457B42491EF99688278816.exe | N/A |
| File created | C:\Windows\Tasks\wow64.job | C:\Users\Admin\AppData\Local\Temp\A21619B981F4E2B4A1858F0457B42491EF99688278816.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1736 wrote to memory of 316 | N/A | C:\Windows\system32\taskeng.exe | C:\Users\Admin\AppData\Local\Temp\A21619B981F4E2B4A1858F0457B42491EF99688278816.exe |
| PID 1736 wrote to memory of 316 | N/A | C:\Windows\system32\taskeng.exe | C:\Users\Admin\AppData\Local\Temp\A21619B981F4E2B4A1858F0457B42491EF99688278816.exe |
| PID 1736 wrote to memory of 316 | N/A | C:\Windows\system32\taskeng.exe | C:\Users\Admin\AppData\Local\Temp\A21619B981F4E2B4A1858F0457B42491EF99688278816.exe |
| PID 1736 wrote to memory of 316 | N/A | C:\Windows\system32\taskeng.exe | C:\Users\Admin\AppData\Local\Temp\A21619B981F4E2B4A1858F0457B42491EF99688278816.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\A21619B981F4E2B4A1858F0457B42491EF99688278816.exe
"C:\Users\Admin\AppData\Local\Temp\A21619B981F4E2B4A1858F0457B42491EF99688278816.exe"
C:\Windows\system32\taskeng.exe
taskeng.exe {DC290BEC-7470-4D67-9513-29BEBEC58496} S-1-5-18:NT AUTHORITY\System:Service:
C:\Users\Admin\AppData\Local\Temp\A21619B981F4E2B4A1858F0457B42491EF99688278816.exe
C:\Users\Admin\AppData\Local\Temp\A21619B981F4E2B4A1858F0457B42491EF99688278816.exe start
Network
| Country | Destination | Domain | Proto |
| RO | 185.198.56.2:4171 | tcp |
Files
Analysis: behavioral2
Detonation Overview
Submitted
2023-04-05 19:11
Reported
2023-04-05 19:13
Platform
win10v2004-20230220-en
Max time kernel
122s
Max time network
128s
Command Line
Signatures
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\Tasks\wow64.job | C:\Users\Admin\AppData\Local\Temp\A21619B981F4E2B4A1858F0457B42491EF99688278816.exe | N/A |
| File opened for modification | C:\Windows\Tasks\wow64.job | C:\Users\Admin\AppData\Local\Temp\A21619B981F4E2B4A1858F0457B42491EF99688278816.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\A21619B981F4E2B4A1858F0457B42491EF99688278816.exe
"C:\Users\Admin\AppData\Local\Temp\A21619B981F4E2B4A1858F0457B42491EF99688278816.exe"
C:\Users\Admin\AppData\Local\Temp\A21619B981F4E2B4A1858F0457B42491EF99688278816.exe
C:\Users\Admin\AppData\Local\Temp\A21619B981F4E2B4A1858F0457B42491EF99688278816.exe start
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 50.23.12.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 56.126.166.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 5.233.140.95.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 28.118.140.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 45.8.109.52.in-addr.arpa | udp |
| US | 93.184.220.29:80 | tcp | |
| US | 93.184.220.29:80 | tcp | |
| US | 209.197.3.8:80 | tcp | |
| NL | 173.223.113.164:443 | tcp | |
| NL | 173.223.113.131:80 | tcp | |
| US | 131.253.33.203:80 | tcp | |
| RO | 185.198.56.2:4171 | tcp | |
| US | 8.8.8.8:53 | 2.56.198.185.in-addr.arpa | udp |