Analysis Overview
SHA256
4246b1740af95e953c8010a6d99c0ab72622b892bc1dbb955eec4067d90d7763
Threat Level: Known bad
The file tmp was found to be: Known bad.
Malicious Activity Summary
SystemBC
Drops file in Windows directory
Program crash
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Analysis: static1
Detonation Overview
Reported
2023-04-15 08:51
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2023-04-15 08:51
Reported
2023-04-15 08:53
Platform
win7-20230220-en
Max time kernel
142s
Max time network
116s
Command Line
Signatures
SystemBC
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\Tasks\wow64.job | C:\Users\Admin\AppData\Local\Temp\tmp.exe | N/A |
| File opened for modification | C:\Windows\Tasks\wow64.job | C:\Users\Admin\AppData\Local\Temp\tmp.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1500 wrote to memory of 1088 | N/A | C:\Windows\system32\taskeng.exe | C:\Users\Admin\AppData\Local\Temp\tmp.exe |
| PID 1500 wrote to memory of 1088 | N/A | C:\Windows\system32\taskeng.exe | C:\Users\Admin\AppData\Local\Temp\tmp.exe |
| PID 1500 wrote to memory of 1088 | N/A | C:\Windows\system32\taskeng.exe | C:\Users\Admin\AppData\Local\Temp\tmp.exe |
| PID 1500 wrote to memory of 1088 | N/A | C:\Windows\system32\taskeng.exe | C:\Users\Admin\AppData\Local\Temp\tmp.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmp.exe"
C:\Windows\system32\taskeng.exe
taskeng.exe {B8EEA0DA-3866-47D1-AD3F-000910D46EB6} S-1-5-18:NT AUTHORITY\System:Service:
C:\Users\Admin\AppData\Local\Temp\tmp.exe
C:\Users\Admin\AppData\Local\Temp\tmp.exe start
Network
| Country | Destination | Domain | Proto |
| RU | 185.215.113.105:4001 | tcp |
Files
memory/820-57-0x00000000003A0000-0x00000000003A5000-memory.dmp
memory/820-58-0x0000000000400000-0x0000000000B3A000-memory.dmp
memory/1088-66-0x0000000000400000-0x0000000000B3A000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2023-04-15 08:51
Reported
2023-04-15 08:53
Platform
win10v2004-20230220-en
Max time kernel
150s
Max time network
125s
Command Line
Signatures
SystemBC
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\Tasks\wow64.job | C:\Users\Admin\AppData\Local\Temp\tmp.exe | N/A |
| File opened for modification | C:\Windows\Tasks\wow64.job | C:\Users\Admin\AppData\Local\Temp\tmp.exe | N/A |
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Users\Admin\AppData\Local\Temp\tmp.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmp.exe"
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 3528 -ip 3528
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3528 -s 948
C:\Users\Admin\AppData\Local\Temp\tmp.exe
C:\Users\Admin\AppData\Local\Temp\tmp.exe start
Network
| Country | Destination | Domain | Proto |
| IE | 40.126.31.67:443 | tcp | |
| US | 8.8.8.8:53 | 241.150.49.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 126.211.247.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 154.239.44.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 73.159.190.20.in-addr.arpa | udp |
| IE | 20.54.89.15:443 | tcp | |
| US | 8.8.8.8:53 | 18.31.95.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 2.36.159.162.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.31.95.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 103.169.127.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 64.13.109.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 8.3.197.209.in-addr.arpa | udp |
| NL | 173.223.113.164:443 | tcp | |
| NL | 173.223.113.131:80 | tcp | |
| US | 131.253.33.203:80 | tcp | |
| US | 93.184.221.240:80 | tcp | |
| RU | 185.215.113.105:4001 | tcp | |
| US | 8.8.8.8:53 | 105.113.215.185.in-addr.arpa | udp |
Files
memory/3528-136-0x0000000002870000-0x0000000002875000-memory.dmp
memory/3528-137-0x0000000000400000-0x0000000000B3A000-memory.dmp
memory/2300-145-0x0000000000400000-0x0000000000B3A000-memory.dmp