Analysis Overview
SHA256
76d00037ad0e19a299b97f7781affae6c33254887d0068dd7d13a34cc3d26297
Threat Level: Known bad
The file 1.exe was found to be: Known bad.
Malicious Activity Summary
Runningrat family
RunningRat
RunningRat payload
Executes dropped EXE
Sets DLL path for service in the registry
Loads dropped DLL
Drops file in System32 directory
Checks processor information in registry
Modifies data under HKEY_USERS
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2022-08-20 20:28
Signatures
RunningRat payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Runningrat family
Analysis: behavioral1
Detonation Overview
Submitted
2022-08-20 20:28
Reported
2022-08-20 20:30
Platform
win7-20220812-en
Max time kernel
47s
Max time network
128s
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\SRDSLS.exe | N/A |
Sets DLL path for service in the registry
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SRDSLS\Parameters\ServiceDll = "C:\\Windows\\system32\\7088170.dll" | C:\Users\Admin\AppData\Local\Temp\1.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\1.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\SRDSLS.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\SRDSLS.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\SRDSLS.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\SRDSLS.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\1.exe | N/A |
| File created | C:\Windows\SysWOW64\SRDSLS.exe | C:\Windows\SysWOW64\svchost.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\SRDSLS.exe | C:\Windows\SysWOW64\svchost.exe | N/A |
| File created | C:\Windows\SysWOW64\7088170.dll | C:\Users\Admin\AppData\Local\Temp\1.exe | N/A |
Checks processor information in registry
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 | C:\Windows\SysWOW64\SRDSLS.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz | C:\Windows\SysWOW64\SRDSLS.exe | N/A |
Modifies data under HKEY_USERS
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie\devenum | C:\Windows\SysWOW64\SRDSLS.exe | N/A |
| Key created | \REGISTRY\USER\.DEFAULT\Software | C:\Windows\SysWOW64\SRDSLS.exe | N/A |
| Key created | \REGISTRY\USER\.DEFAULT\Software\Microsoft | C:\Windows\SysWOW64\SRDSLS.exe | N/A |
| Key created | \REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie | C:\Windows\SysWOW64\SRDSLS.exe | N/A |
| Set value (int) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie\devenum\Version = "7" | C:\Windows\SysWOW64\SRDSLS.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1296 wrote to memory of 964 | N/A | C:\Windows\SysWOW64\svchost.exe | C:\Windows\SysWOW64\SRDSLS.exe |
| PID 1296 wrote to memory of 964 | N/A | C:\Windows\SysWOW64\svchost.exe | C:\Windows\SysWOW64\SRDSLS.exe |
| PID 1296 wrote to memory of 964 | N/A | C:\Windows\SysWOW64\svchost.exe | C:\Windows\SysWOW64\SRDSLS.exe |
| PID 1296 wrote to memory of 964 | N/A | C:\Windows\SysWOW64\svchost.exe | C:\Windows\SysWOW64\SRDSLS.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\1.exe
"C:\Users\Admin\AppData\Local\Temp\1.exe"
C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "SRDSLS"
C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "SRDSLS"
C:\Windows\SysWOW64\SRDSLS.exe
C:\Windows\system32\SRDSLS.exe "c:\windows\system32\7088170.dll",MainThread
Network
| Country | Destination | Domain | Proto |
| NL | 142.250.179.202:443 | tcp | |
| NL | 142.250.179.195:443 | tcp | |
| US | 8.8.8.8:443 | tcp | |
| US | 8.8.8.8:53 | wuxi.tanxinyu.cn | udp |
| HK | 20.239.56.69:520 | wuxi.tanxinyu.cn | tcp |
Files
memory/1916-54-0x0000000010000000-0x000000001000F000-memory.dmp
memory/1916-58-0x00000000759E1000-0x00000000759E3000-memory.dmp
\Windows\SysWOW64\7088170.dll
| MD5 | 06dc6402f153aaa067f95cce93e23cd6 |
| SHA1 | dd74618956182878e33110d2f0900e442c5875a4 |
| SHA256 | 9ef9d33de25bd7eb1692612909c4bb83e754b3824b6088469d6e082e5c8b368c |
| SHA512 | 401aaa6fd7e57927d87223124b5e0bf69d4a4c9d48c2f349082da65481cabec9f0b89f4a05d39d3fe9b4a6ed1ba040e3f905583b0f181ed2107e2f8edc7c8f16 |
memory/1916-60-0x00000000001E0000-0x00000000001ED000-memory.dmp
\??\c:\windows\SysWOW64\7088170.dll
| MD5 | 06dc6402f153aaa067f95cce93e23cd6 |
| SHA1 | dd74618956182878e33110d2f0900e442c5875a4 |
| SHA256 | 9ef9d33de25bd7eb1692612909c4bb83e754b3824b6088469d6e082e5c8b368c |
| SHA512 | 401aaa6fd7e57927d87223124b5e0bf69d4a4c9d48c2f349082da65481cabec9f0b89f4a05d39d3fe9b4a6ed1ba040e3f905583b0f181ed2107e2f8edc7c8f16 |
\Windows\SysWOW64\7088170.dll
| MD5 | 06dc6402f153aaa067f95cce93e23cd6 |
| SHA1 | dd74618956182878e33110d2f0900e442c5875a4 |
| SHA256 | 9ef9d33de25bd7eb1692612909c4bb83e754b3824b6088469d6e082e5c8b368c |
| SHA512 | 401aaa6fd7e57927d87223124b5e0bf69d4a4c9d48c2f349082da65481cabec9f0b89f4a05d39d3fe9b4a6ed1ba040e3f905583b0f181ed2107e2f8edc7c8f16 |
\Windows\SysWOW64\SRDSLS.exe
| MD5 | 51138beea3e2c21ec44d0932c71762a8 |
| SHA1 | 8939cf35447b22dd2c6e6f443446acc1bf986d58 |
| SHA256 | 5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124 |
| SHA512 | 794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d |
memory/964-65-0x0000000000000000-mapping.dmp
C:\Windows\SysWOW64\SRDSLS.exe
| MD5 | 51138beea3e2c21ec44d0932c71762a8 |
| SHA1 | 8939cf35447b22dd2c6e6f443446acc1bf986d58 |
| SHA256 | 5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124 |
| SHA512 | 794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d |
\Windows\SysWOW64\7088170.dll
| MD5 | 06dc6402f153aaa067f95cce93e23cd6 |
| SHA1 | dd74618956182878e33110d2f0900e442c5875a4 |
| SHA256 | 9ef9d33de25bd7eb1692612909c4bb83e754b3824b6088469d6e082e5c8b368c |
| SHA512 | 401aaa6fd7e57927d87223124b5e0bf69d4a4c9d48c2f349082da65481cabec9f0b89f4a05d39d3fe9b4a6ed1ba040e3f905583b0f181ed2107e2f8edc7c8f16 |
C:\Windows\SysWOW64\SRDSLS.exe
| MD5 | 51138beea3e2c21ec44d0932c71762a8 |
| SHA1 | 8939cf35447b22dd2c6e6f443446acc1bf986d58 |
| SHA256 | 5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124 |
| SHA512 | 794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d |
\Windows\SysWOW64\7088170.dll
| MD5 | 06dc6402f153aaa067f95cce93e23cd6 |
| SHA1 | dd74618956182878e33110d2f0900e442c5875a4 |
| SHA256 | 9ef9d33de25bd7eb1692612909c4bb83e754b3824b6088469d6e082e5c8b368c |
| SHA512 | 401aaa6fd7e57927d87223124b5e0bf69d4a4c9d48c2f349082da65481cabec9f0b89f4a05d39d3fe9b4a6ed1ba040e3f905583b0f181ed2107e2f8edc7c8f16 |
\Windows\SysWOW64\7088170.dll
| MD5 | 06dc6402f153aaa067f95cce93e23cd6 |
| SHA1 | dd74618956182878e33110d2f0900e442c5875a4 |
| SHA256 | 9ef9d33de25bd7eb1692612909c4bb83e754b3824b6088469d6e082e5c8b368c |
| SHA512 | 401aaa6fd7e57927d87223124b5e0bf69d4a4c9d48c2f349082da65481cabec9f0b89f4a05d39d3fe9b4a6ed1ba040e3f905583b0f181ed2107e2f8edc7c8f16 |
\Windows\SysWOW64\7088170.dll
| MD5 | 06dc6402f153aaa067f95cce93e23cd6 |
| SHA1 | dd74618956182878e33110d2f0900e442c5875a4 |
| SHA256 | 9ef9d33de25bd7eb1692612909c4bb83e754b3824b6088469d6e082e5c8b368c |
| SHA512 | 401aaa6fd7e57927d87223124b5e0bf69d4a4c9d48c2f349082da65481cabec9f0b89f4a05d39d3fe9b4a6ed1ba040e3f905583b0f181ed2107e2f8edc7c8f16 |
C:\Windows\SysWOW64\ini.ini
| MD5 | 688a0af27b9161aedaf4d2a6e7836ccd |
| SHA1 | bf5b413bfb1244446a011174c9d15f2ba6b2f4ba |
| SHA256 | 11a949b684cd68137a8ec9378dd3f82c3a6bc7c1a91bd8ac865ef58beea84540 |
| SHA512 | 262dce9ebcf79d9c7a637185aa3383a811e55bd77e9e29c79967ae5ef8bb2337895e5e02d60f353797f91cbf45fb4628a82990ee36c47077c807737f8f235ec7 |
Analysis: behavioral2
Detonation Overview
Submitted
2022-08-20 20:28
Reported
2022-08-20 20:30
Platform
win10v2004-20220812-en
Max time kernel
150s
Max time network
136s
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\SRDSLS.exe | N/A |
Sets DLL path for service in the registry
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SRDSLS\Parameters\ServiceDll = "C:\\Windows\\system32\\240572671.dll" | C:\Users\Admin\AppData\Local\Temp\1.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\1.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\1.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\svchost.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\SRDSLS.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\SysWOW64\240572671.dll | C:\Users\Admin\AppData\Local\Temp\1.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\ini.ini | C:\Users\Admin\AppData\Local\Temp\1.exe | N/A |
| File created | C:\Windows\SysWOW64\SRDSLS.exe | C:\Windows\SysWOW64\svchost.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\SRDSLS.exe | C:\Windows\SysWOW64\svchost.exe | N/A |
Checks processor information in registry
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 | C:\Windows\SysWOW64\SRDSLS.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz | C:\Windows\SysWOW64\SRDSLS.exe | N/A |
Modifies data under HKEY_USERS
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie | C:\Windows\SysWOW64\SRDSLS.exe | N/A |
| Set value (int) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie\devenum\Version = "7" | C:\Windows\SysWOW64\SRDSLS.exe | N/A |
| Key created | \REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie\devenum | C:\Windows\SysWOW64\SRDSLS.exe | N/A |
| Key created | \REGISTRY\USER\.DEFAULT\Software | C:\Windows\SysWOW64\SRDSLS.exe | N/A |
| Key created | \REGISTRY\USER\.DEFAULT\Software\Microsoft | C:\Windows\SysWOW64\SRDSLS.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4428 wrote to memory of 1168 | N/A | C:\Windows\SysWOW64\svchost.exe | C:\Windows\SysWOW64\SRDSLS.exe |
| PID 4428 wrote to memory of 1168 | N/A | C:\Windows\SysWOW64\svchost.exe | C:\Windows\SysWOW64\SRDSLS.exe |
| PID 4428 wrote to memory of 1168 | N/A | C:\Windows\SysWOW64\svchost.exe | C:\Windows\SysWOW64\SRDSLS.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\1.exe
"C:\Users\Admin\AppData\Local\Temp\1.exe"
C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "SRDSLS"
C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "SRDSLS"
C:\Windows\SysWOW64\SRDSLS.exe
C:\Windows\system32\SRDSLS.exe "c:\windows\system32\240572671.dll",MainThread
Network
| Country | Destination | Domain | Proto |
| US | 93.184.220.29:80 | tcp | |
| US | 93.184.220.29:80 | tcp | |
| US | 8.8.8.8:53 | wuxi.tanxinyu.cn | udp |
| HK | 20.239.56.69:520 | wuxi.tanxinyu.cn | tcp |
| NL | 13.69.109.130:443 | tcp | |
| NL | 104.80.225.205:443 | tcp | |
| US | 209.197.3.8:80 | tcp | |
| US | 209.197.3.8:80 | tcp |
Files
memory/3108-132-0x0000000010000000-0x000000001000F000-memory.dmp
C:\Windows\SysWOW64\240572671.dll
| MD5 | 69d28b043400bca977bf2007e534810e |
| SHA1 | e35fafaf1b38fce03fd72aa055d0004b086b224b |
| SHA256 | bd376cb3099da07ab9c140044f73cb8335956244cd7b5bf6cdfab4f708fa1d90 |
| SHA512 | dc9e932db1c8527ed731ef90ef991152a219f09290b97a52f480fe1b49546b75568c6b9197bb2a8718709752aeffa6196cff6103a363507d90b5cd4aa1198160 |
memory/3108-138-0x0000000000510000-0x000000000051D000-memory.dmp
C:\Windows\SysWOW64\240572671.dll
| MD5 | 69d28b043400bca977bf2007e534810e |
| SHA1 | e35fafaf1b38fce03fd72aa055d0004b086b224b |
| SHA256 | bd376cb3099da07ab9c140044f73cb8335956244cd7b5bf6cdfab4f708fa1d90 |
| SHA512 | dc9e932db1c8527ed731ef90ef991152a219f09290b97a52f480fe1b49546b75568c6b9197bb2a8718709752aeffa6196cff6103a363507d90b5cd4aa1198160 |
\??\c:\windows\SysWOW64\240572671.dll
| MD5 | 69d28b043400bca977bf2007e534810e |
| SHA1 | e35fafaf1b38fce03fd72aa055d0004b086b224b |
| SHA256 | bd376cb3099da07ab9c140044f73cb8335956244cd7b5bf6cdfab4f708fa1d90 |
| SHA512 | dc9e932db1c8527ed731ef90ef991152a219f09290b97a52f480fe1b49546b75568c6b9197bb2a8718709752aeffa6196cff6103a363507d90b5cd4aa1198160 |
C:\Windows\SysWOW64\240572671.dll
| MD5 | 69d28b043400bca977bf2007e534810e |
| SHA1 | e35fafaf1b38fce03fd72aa055d0004b086b224b |
| SHA256 | bd376cb3099da07ab9c140044f73cb8335956244cd7b5bf6cdfab4f708fa1d90 |
| SHA512 | dc9e932db1c8527ed731ef90ef991152a219f09290b97a52f480fe1b49546b75568c6b9197bb2a8718709752aeffa6196cff6103a363507d90b5cd4aa1198160 |
C:\Windows\SysWOW64\SRDSLS.exe
| MD5 | 889b99c52a60dd49227c5e485a016679 |
| SHA1 | 8fa889e456aa646a4d0a4349977430ce5fa5e2d7 |
| SHA256 | 6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910 |
| SHA512 | 08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641 |
memory/1168-141-0x0000000000000000-mapping.dmp
C:\Windows\SysWOW64\SRDSLS.exe
| MD5 | 889b99c52a60dd49227c5e485a016679 |
| SHA1 | 8fa889e456aa646a4d0a4349977430ce5fa5e2d7 |
| SHA256 | 6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910 |
| SHA512 | 08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641 |
C:\Windows\SysWOW64\240572671.dll
| MD5 | 69d28b043400bca977bf2007e534810e |
| SHA1 | e35fafaf1b38fce03fd72aa055d0004b086b224b |
| SHA256 | bd376cb3099da07ab9c140044f73cb8335956244cd7b5bf6cdfab4f708fa1d90 |
| SHA512 | dc9e932db1c8527ed731ef90ef991152a219f09290b97a52f480fe1b49546b75568c6b9197bb2a8718709752aeffa6196cff6103a363507d90b5cd4aa1198160 |
C:\Windows\SysWOW64\ini.ini
| MD5 | f9466b450a335ca7e6dd5ad45d89b5e2 |
| SHA1 | 2f5b7a72afae7af9d411759a43bc7fbb6ab555c6 |
| SHA256 | cf033b2090dee429d48cd6b8bf6664c318f1b5f188d99265cd85d282fda5318e |
| SHA512 | 8b2f1c68ce31b96ed85f9752d49dcb39d2dd05dfd39f5d09d1a8dc1bf37a024bf960edc556d1c1854e2fbedca4e45839dbf641402f0108f4c416b4a41c709f5e |