Analysis Overview
SHA256
6278b1a4d8a19c7ac40ee309c100924427fb35028f3eadb96112c9b70c3a0d59
Threat Level: Known bad
The file a20d99e025fb23ba51d38a975bc10de5.exe was found to be: Known bad.
Malicious Activity Summary
SystemBC
Executes dropped EXE
Drops file in Windows directory
Program crash
Unsigned PE
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Analysis: static1
Detonation Overview
Reported
2023-05-02 09:22
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2023-05-02 09:22
Reported
2023-05-02 09:24
Platform
win7-20230220-en
Max time kernel
147s
Max time network
150s
Command Line
Signatures
SystemBC
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\ProgramData\gsfobsl\viojprg.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\Tasks\viojprg.job | C:\Users\Admin\AppData\Local\Temp\a20d99e025fb23ba51d38a975bc10de5.exe | N/A |
| File opened for modification | C:\Windows\Tasks\viojprg.job | C:\Users\Admin\AppData\Local\Temp\a20d99e025fb23ba51d38a975bc10de5.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\a20d99e025fb23ba51d38a975bc10de5.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 564 wrote to memory of 1448 | N/A | C:\Windows\system32\taskeng.exe | C:\ProgramData\gsfobsl\viojprg.exe |
| PID 564 wrote to memory of 1448 | N/A | C:\Windows\system32\taskeng.exe | C:\ProgramData\gsfobsl\viojprg.exe |
| PID 564 wrote to memory of 1448 | N/A | C:\Windows\system32\taskeng.exe | C:\ProgramData\gsfobsl\viojprg.exe |
| PID 564 wrote to memory of 1448 | N/A | C:\Windows\system32\taskeng.exe | C:\ProgramData\gsfobsl\viojprg.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\a20d99e025fb23ba51d38a975bc10de5.exe
"C:\Users\Admin\AppData\Local\Temp\a20d99e025fb23ba51d38a975bc10de5.exe"
C:\Windows\system32\taskeng.exe
taskeng.exe {5F5BBE9C-4577-4327-A7AC-A716EB314FC7} S-1-5-18:NT AUTHORITY\System:Service:
C:\ProgramData\gsfobsl\viojprg.exe
C:\ProgramData\gsfobsl\viojprg.exe start
Network
| Country | Destination | Domain | Proto |
| PA | 141.98.82.229:4001 | tcp | |
| PA | 141.98.82.229:4001 | tcp | |
| PA | 141.98.82.229:4001 | tcp |
Files
memory/1988-55-0x00000000001B0000-0x00000000001B9000-memory.dmp
memory/1988-56-0x0000000000400000-0x0000000000581000-memory.dmp
C:\ProgramData\gsfobsl\viojprg.exe
| MD5 | a20d99e025fb23ba51d38a975bc10de5 |
| SHA1 | 6d58a7dc6f4e84ed6cf70fb154e6af3193ff4045 |
| SHA256 | 6278b1a4d8a19c7ac40ee309c100924427fb35028f3eadb96112c9b70c3a0d59 |
| SHA512 | a99ea0bc3d947e5048d92f8e5bdf1745c5d428f2934e29cb2d4f7d3bea029a467e01f28fdc5f09390141b80ad80e016b5b9171fb3b4bf2bd0e0a84a6d9328198 |
C:\ProgramData\gsfobsl\viojprg.exe
| MD5 | a20d99e025fb23ba51d38a975bc10de5 |
| SHA1 | 6d58a7dc6f4e84ed6cf70fb154e6af3193ff4045 |
| SHA256 | 6278b1a4d8a19c7ac40ee309c100924427fb35028f3eadb96112c9b70c3a0d59 |
| SHA512 | a99ea0bc3d947e5048d92f8e5bdf1745c5d428f2934e29cb2d4f7d3bea029a467e01f28fdc5f09390141b80ad80e016b5b9171fb3b4bf2bd0e0a84a6d9328198 |
memory/1448-70-0x0000000000400000-0x0000000000581000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2023-05-02 09:22
Reported
2023-05-02 09:24
Platform
win10v2004-20230220-en
Max time kernel
145s
Max time network
151s
Command Line
Signatures
SystemBC
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\ProgramData\dvgwh\mumxk.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\Tasks\mumxk.job | C:\Users\Admin\AppData\Local\Temp\a20d99e025fb23ba51d38a975bc10de5.exe | N/A |
| File opened for modification | C:\Windows\Tasks\mumxk.job | C:\Users\Admin\AppData\Local\Temp\a20d99e025fb23ba51d38a975bc10de5.exe | N/A |
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Users\Admin\AppData\Local\Temp\a20d99e025fb23ba51d38a975bc10de5.exe |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\a20d99e025fb23ba51d38a975bc10de5.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\a20d99e025fb23ba51d38a975bc10de5.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\a20d99e025fb23ba51d38a975bc10de5.exe
"C:\Users\Admin\AppData\Local\Temp\a20d99e025fb23ba51d38a975bc10de5.exe"
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 384 -p 1696 -ip 1696
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1696 -s 956
C:\ProgramData\dvgwh\mumxk.exe
C:\ProgramData\dvgwh\mumxk.exe start
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 59.128.231.4.in-addr.arpa | udp |
| US | 93.184.220.29:80 | tcp | |
| US | 8.8.8.8:53 | 20.160.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 217.106.137.52.in-addr.arpa | udp |
| US | 40.125.122.176:443 | tcp | |
| US | 13.89.179.9:443 | tcp | |
| US | 93.184.221.240:80 | tcp | |
| US | 93.184.221.240:80 | tcp | |
| NL | 173.223.113.164:443 | tcp | |
| NL | 173.223.113.131:80 | tcp | |
| US | 40.125.122.176:443 | tcp | |
| US | 8.8.8.8:53 | 64.13.109.52.in-addr.arpa | udp |
| US | 93.184.221.240:80 | tcp | |
| US | 40.125.122.176:443 | tcp | |
| US | 40.125.122.176:443 | tcp | |
| US | 40.125.122.176:443 | tcp | |
| PA | 141.98.82.229:4001 | tcp | |
| US | 40.125.122.176:443 | tcp | |
| PA | 141.98.82.229:4001 | tcp | |
| PA | 141.98.82.229:4001 | tcp |
Files
memory/1696-134-0x0000000000720000-0x0000000000729000-memory.dmp
memory/1696-135-0x0000000000400000-0x0000000000581000-memory.dmp
C:\ProgramData\dvgwh\mumxk.exe
| MD5 | a20d99e025fb23ba51d38a975bc10de5 |
| SHA1 | 6d58a7dc6f4e84ed6cf70fb154e6af3193ff4045 |
| SHA256 | 6278b1a4d8a19c7ac40ee309c100924427fb35028f3eadb96112c9b70c3a0d59 |
| SHA512 | a99ea0bc3d947e5048d92f8e5bdf1745c5d428f2934e29cb2d4f7d3bea029a467e01f28fdc5f09390141b80ad80e016b5b9171fb3b4bf2bd0e0a84a6d9328198 |
C:\ProgramData\dvgwh\mumxk.exe
| MD5 | a20d99e025fb23ba51d38a975bc10de5 |
| SHA1 | 6d58a7dc6f4e84ed6cf70fb154e6af3193ff4045 |
| SHA256 | 6278b1a4d8a19c7ac40ee309c100924427fb35028f3eadb96112c9b70c3a0d59 |
| SHA512 | a99ea0bc3d947e5048d92f8e5bdf1745c5d428f2934e29cb2d4f7d3bea029a467e01f28fdc5f09390141b80ad80e016b5b9171fb3b4bf2bd0e0a84a6d9328198 |
memory/5092-149-0x0000000000400000-0x0000000000581000-memory.dmp