Analysis
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max time kernel
150s -
max time network
153s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
05-09-2022 20:34
Behavioral task
behavioral1
Sample
server.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
server.exe
Resource
win10v2004-20220812-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 behavioral1/memory/1948-54-0x0000000010000000-0x000000001000F000-memory.dmp family_runningrat -
Executes dropped EXE 1 IoCs
Processes:
SRDSL.exepid process 1384 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\\7075362.dll" server.exe -
Loads dropped DLL 7 IoCs
Processes:
server.exesvchost.exeSRDSL.exepid process 1948 server.exe 1992 svchost.exe 1992 svchost.exe 1384 SRDSL.exe 1384 SRDSL.exe 1384 SRDSL.exe 1384 SRDSL.exe -
Drops file in System32 directory 4 IoCs
Processes:
svchost.exeserver.exedescription ioc process File created C:\Windows\SysWOW64\SRDSL.exe svchost.exe File opened for modification C:\Windows\SysWOW64\SRDSL.exe svchost.exe File created C:\Windows\SysWOW64\7075362.dll server.exe File opened for modification C:\Windows\SysWOW64\ini.ini server.exe -
Suspicious use of WriteProcessMemory 4 IoCs
Processes:
svchost.exedescription pid process target process PID 1992 wrote to memory of 1384 1992 svchost.exe SRDSL.exe PID 1992 wrote to memory of 1384 1992 svchost.exe SRDSL.exe PID 1992 wrote to memory of 1384 1992 svchost.exe SRDSL.exe PID 1992 wrote to memory of 1384 1992 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:1948
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C:\Windows\SysWOW64\svchost.exeC:\Windows\SysWOW64\svchost.exe -k "SRDSL"1⤵PID:1980
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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:1992 -
C:\Windows\SysWOW64\SRDSL.exeC:\Windows\system32\SRDSL.exe "c:\windows\system32\7075362.dll",MainThread2⤵
- Executes dropped EXE
- Loads dropped DLL
PID:1384
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
-
Filesize
43KB
MD551138beea3e2c21ec44d0932c71762a8
SHA18939cf35447b22dd2c6e6f443446acc1bf986d58
SHA2565ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124
SHA512794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d
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Filesize
43KB
MD551138beea3e2c21ec44d0932c71762a8
SHA18939cf35447b22dd2c6e6f443446acc1bf986d58
SHA2565ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124
SHA512794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d
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Filesize
37KB
MD5634b470e1b1ec228a45c00ce28d334c3
SHA16b052961a9b3948c8b6d7d047aadbd3b7b07318b
SHA2560f7daab8995595fa6ef8a16e90b1eb3d8f5e9a57bb75543dda1c92394804fe2e
SHA51239ce51d412cf1b9c16bbb545aba4e52c2ecce476aa526157f61c921bf915c0f0b6389f912640ed83e71951562f21949e14e3abed2b7c2eb53d0fa6910356b827
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Filesize
37KB
MD5634b470e1b1ec228a45c00ce28d334c3
SHA16b052961a9b3948c8b6d7d047aadbd3b7b07318b
SHA2560f7daab8995595fa6ef8a16e90b1eb3d8f5e9a57bb75543dda1c92394804fe2e
SHA51239ce51d412cf1b9c16bbb545aba4e52c2ecce476aa526157f61c921bf915c0f0b6389f912640ed83e71951562f21949e14e3abed2b7c2eb53d0fa6910356b827
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Filesize
37KB
MD5634b470e1b1ec228a45c00ce28d334c3
SHA16b052961a9b3948c8b6d7d047aadbd3b7b07318b
SHA2560f7daab8995595fa6ef8a16e90b1eb3d8f5e9a57bb75543dda1c92394804fe2e
SHA51239ce51d412cf1b9c16bbb545aba4e52c2ecce476aa526157f61c921bf915c0f0b6389f912640ed83e71951562f21949e14e3abed2b7c2eb53d0fa6910356b827
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Filesize
37KB
MD5634b470e1b1ec228a45c00ce28d334c3
SHA16b052961a9b3948c8b6d7d047aadbd3b7b07318b
SHA2560f7daab8995595fa6ef8a16e90b1eb3d8f5e9a57bb75543dda1c92394804fe2e
SHA51239ce51d412cf1b9c16bbb545aba4e52c2ecce476aa526157f61c921bf915c0f0b6389f912640ed83e71951562f21949e14e3abed2b7c2eb53d0fa6910356b827
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Filesize
37KB
MD5634b470e1b1ec228a45c00ce28d334c3
SHA16b052961a9b3948c8b6d7d047aadbd3b7b07318b
SHA2560f7daab8995595fa6ef8a16e90b1eb3d8f5e9a57bb75543dda1c92394804fe2e
SHA51239ce51d412cf1b9c16bbb545aba4e52c2ecce476aa526157f61c921bf915c0f0b6389f912640ed83e71951562f21949e14e3abed2b7c2eb53d0fa6910356b827
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Filesize
37KB
MD5634b470e1b1ec228a45c00ce28d334c3
SHA16b052961a9b3948c8b6d7d047aadbd3b7b07318b
SHA2560f7daab8995595fa6ef8a16e90b1eb3d8f5e9a57bb75543dda1c92394804fe2e
SHA51239ce51d412cf1b9c16bbb545aba4e52c2ecce476aa526157f61c921bf915c0f0b6389f912640ed83e71951562f21949e14e3abed2b7c2eb53d0fa6910356b827
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Filesize
37KB
MD5634b470e1b1ec228a45c00ce28d334c3
SHA16b052961a9b3948c8b6d7d047aadbd3b7b07318b
SHA2560f7daab8995595fa6ef8a16e90b1eb3d8f5e9a57bb75543dda1c92394804fe2e
SHA51239ce51d412cf1b9c16bbb545aba4e52c2ecce476aa526157f61c921bf915c0f0b6389f912640ed83e71951562f21949e14e3abed2b7c2eb53d0fa6910356b827
-
Filesize
43KB
MD551138beea3e2c21ec44d0932c71762a8
SHA18939cf35447b22dd2c6e6f443446acc1bf986d58
SHA2565ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124
SHA512794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d