Analysis
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max time kernel
1699s -
max time network
1718s -
platform
windows10-2004_x64 -
resource
win10v2004-20220901-en -
resource tags
arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system -
submitted
05-09-2022 20:38
Behavioral task
behavioral1
Sample
server.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
server.exe
Resource
win10v2004-20220901-en
General
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Target
server.exe
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Size
68KB
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MD5
a91a3c7dab07eebc283ae3fa1f3b7227
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SHA1
e88d92ef9354efa3c7f14e9a323e3c96bb2033ad
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SHA256
8c210c79c2b7c4ea35fa08d0c994a3ab26f50ee639c497f341b20da965cfbd1b
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SHA512
a74077b53023cdeff7fb6733e87ffe8f488b69be00d8ef027fdf935efaa79e5882e75956f01c6a94770b612ec0b39a2d8c08822c5f6dbecf956fadfad1f00e83
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SSDEEP
768:BCB8S+OR7dOahyoHokBtqN74W7bZZmYb9PyzcjRlYlwa6NVdkPnJJMIxV:BHJaAoHoc2x7bZoYBAcQlwJdMZ
Malware Config
Signatures
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RunningRat
RunningRat is a remote access trojan first seen in 2018.
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RunningRat payload 1 IoCs
Processes:
resource yara_rule behavioral2/memory/5012-132-0x0000000010000000-0x000000001000F000-memory.dmp family_runningrat -
Executes dropped EXE 1 IoCs
Processes:
SRDSL.exepid process 2880 SRDSL.exe -
Sets DLL path for service in the registry 2 TTPs 1 IoCs
Processes:
server.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SRDSL\Parameters\ServiceDll = "C:\\Windows\\system32\\240561031.dll" server.exe -
Loads dropped DLL 4 IoCs
Processes:
server.exesvchost.exeSRDSL.exepid process 5012 server.exe 5012 server.exe 3632 svchost.exe 2880 SRDSL.exe -
Drops file in System32 directory 4 IoCs
Processes:
server.exesvchost.exedescription ioc process File created C:\Windows\SysWOW64\240561031.dll server.exe File opened for modification C:\Windows\SysWOW64\ini.ini server.exe File created C:\Windows\SysWOW64\SRDSL.exe svchost.exe File opened for modification C:\Windows\SysWOW64\SRDSL.exe svchost.exe -
Suspicious use of WriteProcessMemory 3 IoCs
Processes:
svchost.exedescription pid process target process PID 3632 wrote to memory of 2880 3632 svchost.exe SRDSL.exe PID 3632 wrote to memory of 2880 3632 svchost.exe SRDSL.exe PID 3632 wrote to memory of 2880 3632 svchost.exe SRDSL.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\server.exe"C:\Users\Admin\AppData\Local\Temp\server.exe"1⤵
- Sets DLL path for service in the registry
- Loads dropped DLL
- Drops file in System32 directory
PID:5012
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C:\Windows\SysWOW64\svchost.exeC:\Windows\SysWOW64\svchost.exe -k "SRDSL"1⤵PID:3848
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C:\Windows\SysWOW64\svchost.exeC:\Windows\SysWOW64\svchost.exe -k "SRDSL"1⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:3632 -
C:\Windows\SysWOW64\SRDSL.exeC:\Windows\system32\SRDSL.exe "c:\windows\system32\240561031.dll",MainThread2⤵
- Executes dropped EXE
- Loads dropped DLL
PID:2880
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
37KB
MD54241e76489e5d5e3526612c4ec56aabc
SHA1bb2e44a1ccf0a17bc9af27e734fe47059349a2e9
SHA256f733e625c1945c532f7df6f285b6ad33a4f614e707a34da9ab3c4776956e00c1
SHA512a9e5550677bbef223b697c8664f2bc9bf098b73d79399dadfd8568381a843e7e0f7c8639db433469c1240e8f2bd5e30d63b2298155d2179f1a77371c5cfda0c6
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Filesize
37KB
MD54241e76489e5d5e3526612c4ec56aabc
SHA1bb2e44a1ccf0a17bc9af27e734fe47059349a2e9
SHA256f733e625c1945c532f7df6f285b6ad33a4f614e707a34da9ab3c4776956e00c1
SHA512a9e5550677bbef223b697c8664f2bc9bf098b73d79399dadfd8568381a843e7e0f7c8639db433469c1240e8f2bd5e30d63b2298155d2179f1a77371c5cfda0c6
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Filesize
37KB
MD54241e76489e5d5e3526612c4ec56aabc
SHA1bb2e44a1ccf0a17bc9af27e734fe47059349a2e9
SHA256f733e625c1945c532f7df6f285b6ad33a4f614e707a34da9ab3c4776956e00c1
SHA512a9e5550677bbef223b697c8664f2bc9bf098b73d79399dadfd8568381a843e7e0f7c8639db433469c1240e8f2bd5e30d63b2298155d2179f1a77371c5cfda0c6
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Filesize
37KB
MD54241e76489e5d5e3526612c4ec56aabc
SHA1bb2e44a1ccf0a17bc9af27e734fe47059349a2e9
SHA256f733e625c1945c532f7df6f285b6ad33a4f614e707a34da9ab3c4776956e00c1
SHA512a9e5550677bbef223b697c8664f2bc9bf098b73d79399dadfd8568381a843e7e0f7c8639db433469c1240e8f2bd5e30d63b2298155d2179f1a77371c5cfda0c6
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Filesize
60KB
MD5889b99c52a60dd49227c5e485a016679
SHA18fa889e456aa646a4d0a4349977430ce5fa5e2d7
SHA2566cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910
SHA51208933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641
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Filesize
60KB
MD5889b99c52a60dd49227c5e485a016679
SHA18fa889e456aa646a4d0a4349977430ce5fa5e2d7
SHA2566cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910
SHA51208933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641
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Filesize
37KB
MD54241e76489e5d5e3526612c4ec56aabc
SHA1bb2e44a1ccf0a17bc9af27e734fe47059349a2e9
SHA256f733e625c1945c532f7df6f285b6ad33a4f614e707a34da9ab3c4776956e00c1
SHA512a9e5550677bbef223b697c8664f2bc9bf098b73d79399dadfd8568381a843e7e0f7c8639db433469c1240e8f2bd5e30d63b2298155d2179f1a77371c5cfda0c6