Analysis
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max time kernel
150s -
max time network
154s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
20-08-2022 20:36
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
b6e11c84a80412f8cb7330ab9fcc149e
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SHA1
266266241adc1907f2e6d8d1d15f8aeff89deb78
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SHA256
3cda160efdccaa80d566e2161b0e0d1541a9cb8d282d7636093e6e249235c1b3
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SHA512
f6a68c18e662dabdd9fa1e1eb8b92e91642fda4dae7fda4847b37b9e2408d97e45996cae14b6c0afc4c8068c18e2f945f4c0c0726c4b4009876636a4dbb46784
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/1056-54-0x0000000010000000-0x000000001000F000-memory.dmp family_runningrat -
Executes dropped EXE 1 IoCs
Processes:
NETSRDSLS.exepid process 1040 NETSRDSLS.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\NETSRDSLS\Parameters\ServiceDll = "C:\\Users\\Admin\\AppData\\Local\\Temp\\7084161.dll" server.exe -
Loads dropped DLL 7 IoCs
Processes:
server.exesvchost.exeNETSRDSLS.exepid process 1056 server.exe 944 svchost.exe 944 svchost.exe 1040 NETSRDSLS.exe 1040 NETSRDSLS.exe 1040 NETSRDSLS.exe 1040 NETSRDSLS.exe -
Drops file in System32 directory 3 IoCs
Processes:
server.exesvchost.exedescription ioc process File opened for modification C:\Windows\SysWOW64\ini.ini server.exe File created C:\Windows\SysWOW64\NETSRDSLS.exe svchost.exe File opened for modification C:\Windows\SysWOW64\NETSRDSLS.exe svchost.exe -
Suspicious use of WriteProcessMemory 4 IoCs
Processes:
svchost.exedescription pid process target process PID 944 wrote to memory of 1040 944 svchost.exe NETSRDSLS.exe PID 944 wrote to memory of 1040 944 svchost.exe NETSRDSLS.exe PID 944 wrote to memory of 1040 944 svchost.exe NETSRDSLS.exe PID 944 wrote to memory of 1040 944 svchost.exe NETSRDSLS.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:1056
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C:\Windows\SysWOW64\svchost.exeC:\Windows\SysWOW64\svchost.exe -k "NETSRDSLS"1⤵PID:988
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C:\Windows\SysWOW64\svchost.exeC:\Windows\SysWOW64\svchost.exe -k "NETSRDSLS"1⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:944 -
C:\Windows\SysWOW64\NETSRDSLS.exeC:\Windows\system32\NETSRDSLS.exe "c:\users\admin\appdata\local\temp\7084161.dll",MainThread2⤵
- Executes dropped EXE
- Loads dropped DLL
PID:1040
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
43KB
MD551138beea3e2c21ec44d0932c71762a8
SHA18939cf35447b22dd2c6e6f443446acc1bf986d58
SHA2565ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124
SHA512794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d
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Filesize
43KB
MD551138beea3e2c21ec44d0932c71762a8
SHA18939cf35447b22dd2c6e6f443446acc1bf986d58
SHA2565ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124
SHA512794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d
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Filesize
37KB
MD5efb245b9ecee514779529b298b28d0e4
SHA1fbc99bf7855536f53d5475aa587f3a5669df11f4
SHA256d935a3ea157a822d3e5f06af7aa3b7112634984a38c7314577e6d75905bca5e9
SHA51223331f00547b192aed5462dcf62ca93f2ebe0f653af4c5775e76888adeb41c7263c3c00317cf74fc4e3dde2b2bbb1d178d5b749102bc4a39e789f666d0154556
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Filesize
37KB
MD5efb245b9ecee514779529b298b28d0e4
SHA1fbc99bf7855536f53d5475aa587f3a5669df11f4
SHA256d935a3ea157a822d3e5f06af7aa3b7112634984a38c7314577e6d75905bca5e9
SHA51223331f00547b192aed5462dcf62ca93f2ebe0f653af4c5775e76888adeb41c7263c3c00317cf74fc4e3dde2b2bbb1d178d5b749102bc4a39e789f666d0154556
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Filesize
37KB
MD5efb245b9ecee514779529b298b28d0e4
SHA1fbc99bf7855536f53d5475aa587f3a5669df11f4
SHA256d935a3ea157a822d3e5f06af7aa3b7112634984a38c7314577e6d75905bca5e9
SHA51223331f00547b192aed5462dcf62ca93f2ebe0f653af4c5775e76888adeb41c7263c3c00317cf74fc4e3dde2b2bbb1d178d5b749102bc4a39e789f666d0154556
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Filesize
37KB
MD5efb245b9ecee514779529b298b28d0e4
SHA1fbc99bf7855536f53d5475aa587f3a5669df11f4
SHA256d935a3ea157a822d3e5f06af7aa3b7112634984a38c7314577e6d75905bca5e9
SHA51223331f00547b192aed5462dcf62ca93f2ebe0f653af4c5775e76888adeb41c7263c3c00317cf74fc4e3dde2b2bbb1d178d5b749102bc4a39e789f666d0154556
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Filesize
37KB
MD5efb245b9ecee514779529b298b28d0e4
SHA1fbc99bf7855536f53d5475aa587f3a5669df11f4
SHA256d935a3ea157a822d3e5f06af7aa3b7112634984a38c7314577e6d75905bca5e9
SHA51223331f00547b192aed5462dcf62ca93f2ebe0f653af4c5775e76888adeb41c7263c3c00317cf74fc4e3dde2b2bbb1d178d5b749102bc4a39e789f666d0154556
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Filesize
37KB
MD5efb245b9ecee514779529b298b28d0e4
SHA1fbc99bf7855536f53d5475aa587f3a5669df11f4
SHA256d935a3ea157a822d3e5f06af7aa3b7112634984a38c7314577e6d75905bca5e9
SHA51223331f00547b192aed5462dcf62ca93f2ebe0f653af4c5775e76888adeb41c7263c3c00317cf74fc4e3dde2b2bbb1d178d5b749102bc4a39e789f666d0154556
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Filesize
37KB
MD5efb245b9ecee514779529b298b28d0e4
SHA1fbc99bf7855536f53d5475aa587f3a5669df11f4
SHA256d935a3ea157a822d3e5f06af7aa3b7112634984a38c7314577e6d75905bca5e9
SHA51223331f00547b192aed5462dcf62ca93f2ebe0f653af4c5775e76888adeb41c7263c3c00317cf74fc4e3dde2b2bbb1d178d5b749102bc4a39e789f666d0154556
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Filesize
43KB
MD551138beea3e2c21ec44d0932c71762a8
SHA18939cf35447b22dd2c6e6f443446acc1bf986d58
SHA2565ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124
SHA512794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d