Analysis Overview
SHA256
8c210c79c2b7c4ea35fa08d0c994a3ab26f50ee639c497f341b20da965cfbd1b
Threat Level: Known bad
The file server.exe was found to be: Known bad.
Malicious Activity Summary
RunningRat payload
Runningrat family
RunningRat
Sets DLL path for service in the registry
Executes dropped EXE
Loads dropped DLL
Drops file in System32 directory
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2022-09-05 20:38
Signatures
RunningRat payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Runningrat family
Analysis: behavioral1
Detonation Overview
Submitted
2022-09-05 20:38
Reported
2022-09-05 21:08
Platform
win7-20220812-en
Max time kernel
1732s
Max time network
1746s
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\SRDSL.exe | N/A |
Sets DLL path for service in the registry
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SRDSL\Parameters\ServiceDll = "C:\\Windows\\system32\\7072242.dll" | C:\Users\Admin\AppData\Local\Temp\server.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\server.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\SRDSL.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\SRDSL.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\SRDSL.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\SRDSL.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\SysWOW64\7072242.dll | C:\Users\Admin\AppData\Local\Temp\server.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\ini.ini | C:\Users\Admin\AppData\Local\Temp\server.exe | N/A |
| File created | C:\Windows\SysWOW64\SRDSL.exe | C:\Windows\SysWOW64\svchost.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\SRDSL.exe | C:\Windows\SysWOW64\svchost.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1628 wrote to memory of 1576 | N/A | C:\Windows\SysWOW64\svchost.exe | C:\Windows\SysWOW64\SRDSL.exe |
| PID 1628 wrote to memory of 1576 | N/A | C:\Windows\SysWOW64\svchost.exe | C:\Windows\SysWOW64\SRDSL.exe |
| PID 1628 wrote to memory of 1576 | N/A | C:\Windows\SysWOW64\svchost.exe | C:\Windows\SysWOW64\SRDSL.exe |
| PID 1628 wrote to memory of 1576 | N/A | C:\Windows\SysWOW64\svchost.exe | C:\Windows\SysWOW64\SRDSL.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\server.exe
"C:\Users\Admin\AppData\Local\Temp\server.exe"
C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "SRDSL"
C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "SRDSL"
C:\Windows\SysWOW64\SRDSL.exe
C:\Windows\system32\SRDSL.exe "c:\windows\system32\7072242.dll",MainThread
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | gd.baojie666.buzz | udp |
| HK | 20.187.77.247:53762 | gd.baojie666.buzz | tcp |
| HK | 20.187.77.247:53762 | gd.baojie666.buzz | tcp |
| HK | 20.187.77.247:53762 | gd.baojie666.buzz | tcp |
| US | 8.8.8.8:53 | gd.baojie666.buzz | udp |
| HK | 20.187.77.247:53762 | gd.baojie666.buzz | tcp |
| HK | 20.187.77.247:53762 | gd.baojie666.buzz | tcp |
| HK | 20.187.77.247:53762 | gd.baojie666.buzz | tcp |
| US | 8.8.8.8:53 | gd.baojie666.buzz | udp |
| HK | 20.187.77.247:53762 | gd.baojie666.buzz | tcp |
| HK | 20.187.77.247:53762 | gd.baojie666.buzz | tcp |
| HK | 20.187.77.247:53762 | gd.baojie666.buzz | tcp |
| US | 8.8.8.8:53 | gd.baojie666.buzz | udp |
| HK | 20.187.77.247:53762 | gd.baojie666.buzz | tcp |
| HK | 20.187.77.247:53762 | gd.baojie666.buzz | tcp |
| HK | 20.187.77.247:53762 | gd.baojie666.buzz | tcp |
| US | 8.8.8.8:53 | gd.baojie666.buzz | udp |
| HK | 20.187.77.247:53762 | gd.baojie666.buzz | tcp |
Files
memory/2000-54-0x0000000010000000-0x000000001000F000-memory.dmp
memory/2000-58-0x0000000075501000-0x0000000075503000-memory.dmp
\Windows\SysWOW64\7072242.dll
| MD5 | 155fc1bc598f45bb07aa3eed4906bd63 |
| SHA1 | 31ff0c1b9a8497cdafe493d3e31e912d44f77a2c |
| SHA256 | 4a8d43c608b29b0f9185fc75b61e7211a01cfdfeff690f284fe38d8303276918 |
| SHA512 | 2aba669296dac9950d4a952010a314b6bca6e5e0bfcdd975249592c637166142739578ca97771aa3488a24f34ee9e6f1df1284b90f455bcf6a8f5cd9742d35db |
memory/2000-60-0x0000000000250000-0x000000000025D000-memory.dmp
\??\c:\windows\SysWOW64\7072242.dll
| MD5 | 155fc1bc598f45bb07aa3eed4906bd63 |
| SHA1 | 31ff0c1b9a8497cdafe493d3e31e912d44f77a2c |
| SHA256 | 4a8d43c608b29b0f9185fc75b61e7211a01cfdfeff690f284fe38d8303276918 |
| SHA512 | 2aba669296dac9950d4a952010a314b6bca6e5e0bfcdd975249592c637166142739578ca97771aa3488a24f34ee9e6f1df1284b90f455bcf6a8f5cd9742d35db |
\Windows\SysWOW64\7072242.dll
| MD5 | 155fc1bc598f45bb07aa3eed4906bd63 |
| SHA1 | 31ff0c1b9a8497cdafe493d3e31e912d44f77a2c |
| SHA256 | 4a8d43c608b29b0f9185fc75b61e7211a01cfdfeff690f284fe38d8303276918 |
| SHA512 | 2aba669296dac9950d4a952010a314b6bca6e5e0bfcdd975249592c637166142739578ca97771aa3488a24f34ee9e6f1df1284b90f455bcf6a8f5cd9742d35db |
\Windows\SysWOW64\SRDSL.exe
| MD5 | 51138beea3e2c21ec44d0932c71762a8 |
| SHA1 | 8939cf35447b22dd2c6e6f443446acc1bf986d58 |
| SHA256 | 5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124 |
| SHA512 | 794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d |
C:\Windows\SysWOW64\SRDSL.exe
| MD5 | 51138beea3e2c21ec44d0932c71762a8 |
| SHA1 | 8939cf35447b22dd2c6e6f443446acc1bf986d58 |
| SHA256 | 5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124 |
| SHA512 | 794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d |
memory/1576-65-0x0000000000000000-mapping.dmp
\Windows\SysWOW64\7072242.dll
| MD5 | 155fc1bc598f45bb07aa3eed4906bd63 |
| SHA1 | 31ff0c1b9a8497cdafe493d3e31e912d44f77a2c |
| SHA256 | 4a8d43c608b29b0f9185fc75b61e7211a01cfdfeff690f284fe38d8303276918 |
| SHA512 | 2aba669296dac9950d4a952010a314b6bca6e5e0bfcdd975249592c637166142739578ca97771aa3488a24f34ee9e6f1df1284b90f455bcf6a8f5cd9742d35db |
C:\Windows\SysWOW64\SRDSL.exe
| MD5 | 51138beea3e2c21ec44d0932c71762a8 |
| SHA1 | 8939cf35447b22dd2c6e6f443446acc1bf986d58 |
| SHA256 | 5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124 |
| SHA512 | 794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d |
\Windows\SysWOW64\7072242.dll
| MD5 | 155fc1bc598f45bb07aa3eed4906bd63 |
| SHA1 | 31ff0c1b9a8497cdafe493d3e31e912d44f77a2c |
| SHA256 | 4a8d43c608b29b0f9185fc75b61e7211a01cfdfeff690f284fe38d8303276918 |
| SHA512 | 2aba669296dac9950d4a952010a314b6bca6e5e0bfcdd975249592c637166142739578ca97771aa3488a24f34ee9e6f1df1284b90f455bcf6a8f5cd9742d35db |
\Windows\SysWOW64\7072242.dll
| MD5 | 155fc1bc598f45bb07aa3eed4906bd63 |
| SHA1 | 31ff0c1b9a8497cdafe493d3e31e912d44f77a2c |
| SHA256 | 4a8d43c608b29b0f9185fc75b61e7211a01cfdfeff690f284fe38d8303276918 |
| SHA512 | 2aba669296dac9950d4a952010a314b6bca6e5e0bfcdd975249592c637166142739578ca97771aa3488a24f34ee9e6f1df1284b90f455bcf6a8f5cd9742d35db |
\Windows\SysWOW64\7072242.dll
| MD5 | 155fc1bc598f45bb07aa3eed4906bd63 |
| SHA1 | 31ff0c1b9a8497cdafe493d3e31e912d44f77a2c |
| SHA256 | 4a8d43c608b29b0f9185fc75b61e7211a01cfdfeff690f284fe38d8303276918 |
| SHA512 | 2aba669296dac9950d4a952010a314b6bca6e5e0bfcdd975249592c637166142739578ca97771aa3488a24f34ee9e6f1df1284b90f455bcf6a8f5cd9742d35db |
Analysis: behavioral2
Detonation Overview
Submitted
2022-09-05 20:38
Reported
2022-09-05 21:08
Platform
win10v2004-20220901-en
Max time kernel
1699s
Max time network
1718s
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\SRDSL.exe | N/A |
Sets DLL path for service in the registry
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SRDSL\Parameters\ServiceDll = "C:\\Windows\\system32\\240561031.dll" | C:\Users\Admin\AppData\Local\Temp\server.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\server.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\server.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\svchost.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\SRDSL.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\SysWOW64\240561031.dll | C:\Users\Admin\AppData\Local\Temp\server.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\ini.ini | C:\Users\Admin\AppData\Local\Temp\server.exe | N/A |
| File created | C:\Windows\SysWOW64\SRDSL.exe | C:\Windows\SysWOW64\svchost.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\SRDSL.exe | C:\Windows\SysWOW64\svchost.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 3632 wrote to memory of 2880 | N/A | C:\Windows\SysWOW64\svchost.exe | C:\Windows\SysWOW64\SRDSL.exe |
| PID 3632 wrote to memory of 2880 | N/A | C:\Windows\SysWOW64\svchost.exe | C:\Windows\SysWOW64\SRDSL.exe |
| PID 3632 wrote to memory of 2880 | N/A | C:\Windows\SysWOW64\svchost.exe | C:\Windows\SysWOW64\SRDSL.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\server.exe
"C:\Users\Admin\AppData\Local\Temp\server.exe"
C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "SRDSL"
C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "SRDSL"
C:\Windows\SysWOW64\SRDSL.exe
C:\Windows\system32\SRDSL.exe "c:\windows\system32\240561031.dll",MainThread
Network
| Country | Destination | Domain | Proto |
| US | 209.197.3.8:80 | tcp | |
| US | 209.197.3.8:80 | tcp | |
| US | 8.8.8.8:53 | gd.baojie666.buzz | udp |
| HK | 20.187.77.247:53762 | gd.baojie666.buzz | tcp |
| NL | 104.80.225.205:443 | tcp | |
| US | 20.189.173.12:443 | tcp | |
| US | 209.197.3.8:80 | tcp | |
| US | 209.197.3.8:80 | tcp | |
| US | 209.197.3.8:80 | tcp | |
| HK | 20.187.77.247:53762 | gd.baojie666.buzz | tcp |
| HK | 20.187.77.247:53762 | gd.baojie666.buzz | tcp |
| US | 8.8.8.8:53 | gd.baojie666.buzz | udp |
| HK | 20.187.77.247:53762 | gd.baojie666.buzz | tcp |
| HK | 20.187.77.247:53762 | gd.baojie666.buzz | tcp |
| HK | 20.187.77.247:53762 | gd.baojie666.buzz | tcp |
| US | 8.8.8.8:53 | gd.baojie666.buzz | udp |
| HK | 20.187.77.247:53762 | gd.baojie666.buzz | tcp |
| HK | 20.187.77.247:53762 | gd.baojie666.buzz | tcp |
| HK | 20.187.77.247:53762 | gd.baojie666.buzz | tcp |
| US | 8.8.8.8:53 | gd.baojie666.buzz | udp |
| HK | 20.187.77.247:53762 | gd.baojie666.buzz | tcp |
| HK | 20.187.77.247:53762 | gd.baojie666.buzz | tcp |
| HK | 20.187.77.247:53762 | gd.baojie666.buzz | tcp |
| US | 8.8.8.8:53 | gd.baojie666.buzz | udp |
| HK | 20.187.77.247:53762 | gd.baojie666.buzz | tcp |
Files
memory/5012-132-0x0000000010000000-0x000000001000F000-memory.dmp
C:\Windows\SysWOW64\240561031.dll
| MD5 | 4241e76489e5d5e3526612c4ec56aabc |
| SHA1 | bb2e44a1ccf0a17bc9af27e734fe47059349a2e9 |
| SHA256 | f733e625c1945c532f7df6f285b6ad33a4f614e707a34da9ab3c4776956e00c1 |
| SHA512 | a9e5550677bbef223b697c8664f2bc9bf098b73d79399dadfd8568381a843e7e0f7c8639db433469c1240e8f2bd5e30d63b2298155d2179f1a77371c5cfda0c6 |
C:\Windows\SysWOW64\240561031.dll
| MD5 | 4241e76489e5d5e3526612c4ec56aabc |
| SHA1 | bb2e44a1ccf0a17bc9af27e734fe47059349a2e9 |
| SHA256 | f733e625c1945c532f7df6f285b6ad33a4f614e707a34da9ab3c4776956e00c1 |
| SHA512 | a9e5550677bbef223b697c8664f2bc9bf098b73d79399dadfd8568381a843e7e0f7c8639db433469c1240e8f2bd5e30d63b2298155d2179f1a77371c5cfda0c6 |
memory/5012-138-0x00000000008A0000-0x00000000008AD000-memory.dmp
C:\Windows\SysWOW64\240561031.dll
| MD5 | 4241e76489e5d5e3526612c4ec56aabc |
| SHA1 | bb2e44a1ccf0a17bc9af27e734fe47059349a2e9 |
| SHA256 | f733e625c1945c532f7df6f285b6ad33a4f614e707a34da9ab3c4776956e00c1 |
| SHA512 | a9e5550677bbef223b697c8664f2bc9bf098b73d79399dadfd8568381a843e7e0f7c8639db433469c1240e8f2bd5e30d63b2298155d2179f1a77371c5cfda0c6 |
\??\c:\windows\SysWOW64\240561031.dll
| MD5 | 4241e76489e5d5e3526612c4ec56aabc |
| SHA1 | bb2e44a1ccf0a17bc9af27e734fe47059349a2e9 |
| SHA256 | f733e625c1945c532f7df6f285b6ad33a4f614e707a34da9ab3c4776956e00c1 |
| SHA512 | a9e5550677bbef223b697c8664f2bc9bf098b73d79399dadfd8568381a843e7e0f7c8639db433469c1240e8f2bd5e30d63b2298155d2179f1a77371c5cfda0c6 |
memory/2880-141-0x0000000000000000-mapping.dmp
C:\Windows\SysWOW64\SRDSL.exe
| MD5 | 889b99c52a60dd49227c5e485a016679 |
| SHA1 | 8fa889e456aa646a4d0a4349977430ce5fa5e2d7 |
| SHA256 | 6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910 |
| SHA512 | 08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641 |
C:\Windows\SysWOW64\SRDSL.exe
| MD5 | 889b99c52a60dd49227c5e485a016679 |
| SHA1 | 8fa889e456aa646a4d0a4349977430ce5fa5e2d7 |
| SHA256 | 6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910 |
| SHA512 | 08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641 |
C:\Windows\SysWOW64\240561031.dll
| MD5 | 4241e76489e5d5e3526612c4ec56aabc |
| SHA1 | bb2e44a1ccf0a17bc9af27e734fe47059349a2e9 |
| SHA256 | f733e625c1945c532f7df6f285b6ad33a4f614e707a34da9ab3c4776956e00c1 |
| SHA512 | a9e5550677bbef223b697c8664f2bc9bf098b73d79399dadfd8568381a843e7e0f7c8639db433469c1240e8f2bd5e30d63b2298155d2179f1a77371c5cfda0c6 |