Analysis Overview
SHA256
3f6c84150d51188f54330ce514518c879705052abad3f89325e9c279f1d9403e
Threat Level: Known bad
The file 6CA5.exe was found to be: Known bad.
Malicious Activity Summary
SystemBC
Executes dropped EXE
Drops file in Windows directory
Program crash
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Analysis: static1
Detonation Overview
Reported
2022-12-17 12:07
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2022-12-17 12:07
Reported
2022-12-17 12:27
Platform
win7-20220812-en
Max time kernel
1187s
Max time network
1191s
Command Line
Signatures
SystemBC
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\ProgramData\mmxrbk\nkih.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\Tasks\nkih.job | C:\Users\Admin\AppData\Local\Temp\6CA5.exe | N/A |
| File opened for modification | C:\Windows\Tasks\nkih.job | C:\Users\Admin\AppData\Local\Temp\6CA5.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\6CA5.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1748 wrote to memory of 904 | N/A | C:\Windows\system32\taskeng.exe | C:\ProgramData\mmxrbk\nkih.exe |
| PID 1748 wrote to memory of 904 | N/A | C:\Windows\system32\taskeng.exe | C:\ProgramData\mmxrbk\nkih.exe |
| PID 1748 wrote to memory of 904 | N/A | C:\Windows\system32\taskeng.exe | C:\ProgramData\mmxrbk\nkih.exe |
| PID 1748 wrote to memory of 904 | N/A | C:\Windows\system32\taskeng.exe | C:\ProgramData\mmxrbk\nkih.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\6CA5.exe
"C:\Users\Admin\AppData\Local\Temp\6CA5.exe"
C:\Windows\system32\taskeng.exe
taskeng.exe {1D5B761E-E049-44B5-AD14-A0A808448793} S-1-5-18:NT AUTHORITY\System:Service:
C:\ProgramData\mmxrbk\nkih.exe
C:\ProgramData\mmxrbk\nkih.exe start
Network
| Country | Destination | Domain | Proto |
| N/A | 109.205.214.18:443 | tcp | |
| N/A | 142.250.190.110:80 | 142.250.190.110 | tcp |
| N/A | 142.250.72.142:80 | 142.250.72.142 | tcp |
| N/A | 142.250.191.174:80 | 142.250.191.174 | tcp |
| N/A | 142.250.190.110:80 | 142.250.190.110 | tcp |
| N/A | 142.250.190.110:80 | 142.250.190.110 | tcp |
| N/A | 142.250.72.142:80 | 142.250.72.142 | tcp |
Files
memory/1184-54-0x0000000074BB1000-0x0000000074BB3000-memory.dmp
memory/1184-55-0x00000000005FB000-0x0000000000611000-memory.dmp
memory/1184-56-0x0000000000220000-0x0000000000229000-memory.dmp
memory/1184-57-0x0000000000400000-0x0000000000458000-memory.dmp
C:\ProgramData\mmxrbk\nkih.exe
| MD5 | a533eeaaec1a873d84936633e153dd0a |
| SHA1 | a16f84c4039ddccf9960cee21cb8860f2f1cf34c |
| SHA256 | 3f6c84150d51188f54330ce514518c879705052abad3f89325e9c279f1d9403e |
| SHA512 | c599ec24478794dbe3fd1f3124bb93423b610a5d36eb76d625a2401fcc5f368ee40bca9585ba156a06747c593bc415369ae2106ee48b94044a72a59bd1949b79 |
C:\ProgramData\mmxrbk\nkih.exe
| MD5 | a533eeaaec1a873d84936633e153dd0a |
| SHA1 | a16f84c4039ddccf9960cee21cb8860f2f1cf34c |
| SHA256 | 3f6c84150d51188f54330ce514518c879705052abad3f89325e9c279f1d9403e |
| SHA512 | c599ec24478794dbe3fd1f3124bb93423b610a5d36eb76d625a2401fcc5f368ee40bca9585ba156a06747c593bc415369ae2106ee48b94044a72a59bd1949b79 |
memory/904-59-0x0000000000000000-mapping.dmp
memory/1184-61-0x00000000005FB000-0x0000000000611000-memory.dmp
memory/904-63-0x000000000061B000-0x0000000000631000-memory.dmp
memory/904-64-0x0000000000400000-0x0000000000458000-memory.dmp
memory/904-65-0x000000000061B000-0x0000000000631000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2022-12-17 12:07
Reported
2022-12-17 12:27
Platform
win10v2004-20220901-en
Max time kernel
1194s
Max time network
1197s
Command Line
Signatures
SystemBC
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\ProgramData\xwkwvj\fnnfwqh.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\Tasks\fnnfwqh.job | C:\Users\Admin\AppData\Local\Temp\6CA5.exe | N/A |
| File opened for modification | C:\Windows\Tasks\fnnfwqh.job | C:\Users\Admin\AppData\Local\Temp\6CA5.exe | N/A |
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Users\Admin\AppData\Local\Temp\6CA5.exe |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\6CA5.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\6CA5.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\6CA5.exe
"C:\Users\Admin\AppData\Local\Temp\6CA5.exe"
C:\ProgramData\xwkwvj\fnnfwqh.exe
C:\ProgramData\xwkwvj\fnnfwqh.exe start
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 3704 -ip 3704
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3704 -s 492
Network
| Country | Destination | Domain | Proto |
| N/A | 20.189.173.15:443 | tcp | |
| N/A | 2.18.109.224:443 | tcp | |
| N/A | 109.205.214.18:443 | tcp | |
| N/A | 142.250.190.110:80 | 142.250.190.110 | tcp |
| N/A | 142.250.72.142:80 | 142.250.72.142 | tcp |
| N/A | 142.250.191.174:80 | 142.250.191.174 | tcp |
| N/A | 142.250.190.110:80 | 142.250.190.110 | tcp |
| N/A | 142.250.190.110:80 | 142.250.190.110 | tcp |
| N/A | 142.250.72.142:80 | 142.250.72.142 | tcp |
Files
memory/3704-132-0x0000000000659000-0x000000000066F000-memory.dmp
memory/3704-133-0x00000000004D0000-0x00000000004D9000-memory.dmp
memory/3704-134-0x0000000000400000-0x0000000000458000-memory.dmp
memory/3704-135-0x0000000000659000-0x000000000066F000-memory.dmp
memory/3704-136-0x00000000004D0000-0x00000000004D9000-memory.dmp
C:\ProgramData\xwkwvj\fnnfwqh.exe
| MD5 | a533eeaaec1a873d84936633e153dd0a |
| SHA1 | a16f84c4039ddccf9960cee21cb8860f2f1cf34c |
| SHA256 | 3f6c84150d51188f54330ce514518c879705052abad3f89325e9c279f1d9403e |
| SHA512 | c599ec24478794dbe3fd1f3124bb93423b610a5d36eb76d625a2401fcc5f368ee40bca9585ba156a06747c593bc415369ae2106ee48b94044a72a59bd1949b79 |
C:\ProgramData\xwkwvj\fnnfwqh.exe
| MD5 | a533eeaaec1a873d84936633e153dd0a |
| SHA1 | a16f84c4039ddccf9960cee21cb8860f2f1cf34c |
| SHA256 | 3f6c84150d51188f54330ce514518c879705052abad3f89325e9c279f1d9403e |
| SHA512 | c599ec24478794dbe3fd1f3124bb93423b610a5d36eb76d625a2401fcc5f368ee40bca9585ba156a06747c593bc415369ae2106ee48b94044a72a59bd1949b79 |
memory/3692-139-0x00000000004B2000-0x00000000004C8000-memory.dmp
memory/3692-140-0x0000000000400000-0x0000000000458000-memory.dmp
memory/3704-141-0x0000000000659000-0x000000000066F000-memory.dmp
memory/3704-142-0x0000000000400000-0x0000000000458000-memory.dmp