Analysis Overview
SHA256
d759e1ec1af4392131aa3aa7f8446f8078d16bb3405b12ed62f123aca95c969c
Threat Level: Known bad
The file c.exe was found to be: Known bad.
Malicious Activity Summary
RunningRat
RunningRat payload
Runningrat family
Executes dropped EXE
Sets DLL path for service in the registry
Loads dropped DLL
Drops file in System32 directory
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2022-08-02 05:06
Signatures
RunningRat payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Runningrat family
Analysis: behavioral1
Detonation Overview
Submitted
2022-08-02 05:06
Reported
2022-08-02 05:09
Platform
win7-20220715-en
Max time kernel
127s
Max time network
49s
Command Line
Signatures
RunningRat
RunningRat payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WindowsSystem32.exe | N/A |
Sets DLL path for service in the registry
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\WindowsSystem32\Parameters\ServiceDll = "C:\\Users\\Admin\\AppData\\Local\\Temp\\7080089.dll" | C:\Users\Admin\AppData\Local\Temp\c.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\c.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\svchost.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\svchost.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\WindowsSystem32.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\WindowsSystem32.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\WindowsSystem32.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\WindowsSystem32.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\SysWOW64\WindowsSystem32.exe | C:\Windows\SysWOW64\svchost.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\WindowsSystem32.exe | C:\Windows\SysWOW64\svchost.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\ini.ini | C:\Users\Admin\AppData\Local\Temp\c.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1272 wrote to memory of 1048 | N/A | C:\Windows\SysWOW64\svchost.exe | C:\Windows\SysWOW64\WindowsSystem32.exe |
| PID 1272 wrote to memory of 1048 | N/A | C:\Windows\SysWOW64\svchost.exe | C:\Windows\SysWOW64\WindowsSystem32.exe |
| PID 1272 wrote to memory of 1048 | N/A | C:\Windows\SysWOW64\svchost.exe | C:\Windows\SysWOW64\WindowsSystem32.exe |
| PID 1272 wrote to memory of 1048 | N/A | C:\Windows\SysWOW64\svchost.exe | C:\Windows\SysWOW64\WindowsSystem32.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\c.exe
"C:\Users\Admin\AppData\Local\Temp\c.exe"
C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "WindowsSystem32"
C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "WindowsSystem32"
C:\Windows\SysWOW64\WindowsSystem32.exe
C:\Windows\system32\WindowsSystem32.exe "c:\users\admin\appdata\local\temp\7080089.dll",MainThread
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | a.yuantahaizai.biz | udp |
Files
memory/668-54-0x0000000010000000-0x000000001000F000-memory.dmp
memory/668-58-0x0000000076C01000-0x0000000076C03000-memory.dmp
\Users\Admin\AppData\Local\Temp\7080089.dll
| MD5 | 5237af4ad711204e8f3cb7aa48b5b50a |
| SHA1 | beac930860f76be9c529bdd949b88fb4827197c4 |
| SHA256 | 7c62786ad6f16a3b63c0fd5809d58552b6de4c935d01f05048484248120813c1 |
| SHA512 | 20f90a791ae191096cb1dadcb96f01c9bbd38a3d0d21a3e6812f4a5811f46ccb80e5f10f2a59d7af23cd35557630b5cbf19d9286646a28673745efe5bf1228de |
memory/668-60-0x0000000000250000-0x000000000025D000-memory.dmp
\Users\Admin\AppData\Local\Temp\7080089.dll
| MD5 | 5237af4ad711204e8f3cb7aa48b5b50a |
| SHA1 | beac930860f76be9c529bdd949b88fb4827197c4 |
| SHA256 | 7c62786ad6f16a3b63c0fd5809d58552b6de4c935d01f05048484248120813c1 |
| SHA512 | 20f90a791ae191096cb1dadcb96f01c9bbd38a3d0d21a3e6812f4a5811f46ccb80e5f10f2a59d7af23cd35557630b5cbf19d9286646a28673745efe5bf1228de |
\??\c:\users\admin\appdata\local\temp\7080089.dll
| MD5 | 5237af4ad711204e8f3cb7aa48b5b50a |
| SHA1 | beac930860f76be9c529bdd949b88fb4827197c4 |
| SHA256 | 7c62786ad6f16a3b63c0fd5809d58552b6de4c935d01f05048484248120813c1 |
| SHA512 | 20f90a791ae191096cb1dadcb96f01c9bbd38a3d0d21a3e6812f4a5811f46ccb80e5f10f2a59d7af23cd35557630b5cbf19d9286646a28673745efe5bf1228de |
\Windows\SysWOW64\WindowsSystem32.exe
| MD5 | 51138beea3e2c21ec44d0932c71762a8 |
| SHA1 | 8939cf35447b22dd2c6e6f443446acc1bf986d58 |
| SHA256 | 5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124 |
| SHA512 | 794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d |
memory/1048-65-0x0000000000000000-mapping.dmp
C:\Windows\SysWOW64\WindowsSystem32.exe
| MD5 | 51138beea3e2c21ec44d0932c71762a8 |
| SHA1 | 8939cf35447b22dd2c6e6f443446acc1bf986d58 |
| SHA256 | 5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124 |
| SHA512 | 794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d |
\Users\Admin\AppData\Local\Temp\7080089.dll
| MD5 | 5237af4ad711204e8f3cb7aa48b5b50a |
| SHA1 | beac930860f76be9c529bdd949b88fb4827197c4 |
| SHA256 | 7c62786ad6f16a3b63c0fd5809d58552b6de4c935d01f05048484248120813c1 |
| SHA512 | 20f90a791ae191096cb1dadcb96f01c9bbd38a3d0d21a3e6812f4a5811f46ccb80e5f10f2a59d7af23cd35557630b5cbf19d9286646a28673745efe5bf1228de |
\Users\Admin\AppData\Local\Temp\7080089.dll
| MD5 | 5237af4ad711204e8f3cb7aa48b5b50a |
| SHA1 | beac930860f76be9c529bdd949b88fb4827197c4 |
| SHA256 | 7c62786ad6f16a3b63c0fd5809d58552b6de4c935d01f05048484248120813c1 |
| SHA512 | 20f90a791ae191096cb1dadcb96f01c9bbd38a3d0d21a3e6812f4a5811f46ccb80e5f10f2a59d7af23cd35557630b5cbf19d9286646a28673745efe5bf1228de |
\Users\Admin\AppData\Local\Temp\7080089.dll
| MD5 | 5237af4ad711204e8f3cb7aa48b5b50a |
| SHA1 | beac930860f76be9c529bdd949b88fb4827197c4 |
| SHA256 | 7c62786ad6f16a3b63c0fd5809d58552b6de4c935d01f05048484248120813c1 |
| SHA512 | 20f90a791ae191096cb1dadcb96f01c9bbd38a3d0d21a3e6812f4a5811f46ccb80e5f10f2a59d7af23cd35557630b5cbf19d9286646a28673745efe5bf1228de |
C:\Windows\SysWOW64\WindowsSystem32.exe
| MD5 | 51138beea3e2c21ec44d0932c71762a8 |
| SHA1 | 8939cf35447b22dd2c6e6f443446acc1bf986d58 |
| SHA256 | 5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124 |
| SHA512 | 794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d |
\Users\Admin\AppData\Local\Temp\7080089.dll
| MD5 | 5237af4ad711204e8f3cb7aa48b5b50a |
| SHA1 | beac930860f76be9c529bdd949b88fb4827197c4 |
| SHA256 | 7c62786ad6f16a3b63c0fd5809d58552b6de4c935d01f05048484248120813c1 |
| SHA512 | 20f90a791ae191096cb1dadcb96f01c9bbd38a3d0d21a3e6812f4a5811f46ccb80e5f10f2a59d7af23cd35557630b5cbf19d9286646a28673745efe5bf1228de |
Analysis: behavioral2
Detonation Overview
Submitted
2022-08-02 05:06
Reported
2022-08-02 05:09
Platform
win10v2004-20220721-en
Max time kernel
128s
Max time network
152s
Command Line
Signatures
RunningRat
RunningRat payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WindowsSystem32.exe | N/A |
Sets DLL path for service in the registry
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\WindowsSystem32\Parameters\ServiceDll = "C:\\Users\\Admin\\AppData\\Local\\Temp\\240573296.dll" | C:\Users\Admin\AppData\Local\Temp\c.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\c.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\c.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\svchost.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\WindowsSystem32.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\SysWOW64\ini.ini | C:\Users\Admin\AppData\Local\Temp\c.exe | N/A |
| File created | C:\Windows\SysWOW64\WindowsSystem32.exe | C:\Windows\SysWOW64\svchost.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\WindowsSystem32.exe | C:\Windows\SysWOW64\svchost.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4816 wrote to memory of 2296 | N/A | C:\Windows\SysWOW64\svchost.exe | C:\Windows\SysWOW64\WindowsSystem32.exe |
| PID 4816 wrote to memory of 2296 | N/A | C:\Windows\SysWOW64\svchost.exe | C:\Windows\SysWOW64\WindowsSystem32.exe |
| PID 4816 wrote to memory of 2296 | N/A | C:\Windows\SysWOW64\svchost.exe | C:\Windows\SysWOW64\WindowsSystem32.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\c.exe
"C:\Users\Admin\AppData\Local\Temp\c.exe"
C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "WindowsSystem32"
C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "WindowsSystem32"
C:\Windows\SysWOW64\WindowsSystem32.exe
C:\Windows\system32\WindowsSystem32.exe "c:\users\admin\appdata\local\temp\240573296.dll",MainThread
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | a.yuantahaizai.biz | udp |
| FR | 40.79.141.152:443 | tcp | |
| BE | 67.27.153.126:80 | tcp | |
| FR | 2.18.109.224:443 | tcp | |
| US | 93.184.220.29:80 | tcp | |
| US | 8.8.8.8:53 | a.yuantahaizai.biz | udp |
Files
memory/1380-130-0x0000000010000000-0x000000001000F000-memory.dmp
memory/1380-136-0x0000000000590000-0x000000000059D000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\240573296.dll
| MD5 | 5237af4ad711204e8f3cb7aa48b5b50a |
| SHA1 | beac930860f76be9c529bdd949b88fb4827197c4 |
| SHA256 | 7c62786ad6f16a3b63c0fd5809d58552b6de4c935d01f05048484248120813c1 |
| SHA512 | 20f90a791ae191096cb1dadcb96f01c9bbd38a3d0d21a3e6812f4a5811f46ccb80e5f10f2a59d7af23cd35557630b5cbf19d9286646a28673745efe5bf1228de |
C:\Users\Admin\AppData\Local\Temp\240573296.dll
| MD5 | 5237af4ad711204e8f3cb7aa48b5b50a |
| SHA1 | beac930860f76be9c529bdd949b88fb4827197c4 |
| SHA256 | 7c62786ad6f16a3b63c0fd5809d58552b6de4c935d01f05048484248120813c1 |
| SHA512 | 20f90a791ae191096cb1dadcb96f01c9bbd38a3d0d21a3e6812f4a5811f46ccb80e5f10f2a59d7af23cd35557630b5cbf19d9286646a28673745efe5bf1228de |
\??\c:\users\admin\appdata\local\temp\240573296.dll
| MD5 | 5237af4ad711204e8f3cb7aa48b5b50a |
| SHA1 | beac930860f76be9c529bdd949b88fb4827197c4 |
| SHA256 | 7c62786ad6f16a3b63c0fd5809d58552b6de4c935d01f05048484248120813c1 |
| SHA512 | 20f90a791ae191096cb1dadcb96f01c9bbd38a3d0d21a3e6812f4a5811f46ccb80e5f10f2a59d7af23cd35557630b5cbf19d9286646a28673745efe5bf1228de |
C:\Users\Admin\AppData\Local\Temp\240573296.dll
| MD5 | 5237af4ad711204e8f3cb7aa48b5b50a |
| SHA1 | beac930860f76be9c529bdd949b88fb4827197c4 |
| SHA256 | 7c62786ad6f16a3b63c0fd5809d58552b6de4c935d01f05048484248120813c1 |
| SHA512 | 20f90a791ae191096cb1dadcb96f01c9bbd38a3d0d21a3e6812f4a5811f46ccb80e5f10f2a59d7af23cd35557630b5cbf19d9286646a28673745efe5bf1228de |
memory/2296-139-0x0000000000000000-mapping.dmp
C:\Windows\SysWOW64\WindowsSystem32.exe
| MD5 | 889b99c52a60dd49227c5e485a016679 |
| SHA1 | 8fa889e456aa646a4d0a4349977430ce5fa5e2d7 |
| SHA256 | 6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910 |
| SHA512 | 08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641 |
C:\Windows\SysWOW64\WindowsSystem32.exe
| MD5 | 889b99c52a60dd49227c5e485a016679 |
| SHA1 | 8fa889e456aa646a4d0a4349977430ce5fa5e2d7 |
| SHA256 | 6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910 |
| SHA512 | 08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641 |
C:\Users\Admin\AppData\Local\Temp\240573296.dll
| MD5 | 5237af4ad711204e8f3cb7aa48b5b50a |
| SHA1 | beac930860f76be9c529bdd949b88fb4827197c4 |
| SHA256 | 7c62786ad6f16a3b63c0fd5809d58552b6de4c935d01f05048484248120813c1 |
| SHA512 | 20f90a791ae191096cb1dadcb96f01c9bbd38a3d0d21a3e6812f4a5811f46ccb80e5f10f2a59d7af23cd35557630b5cbf19d9286646a28673745efe5bf1228de |