Malware Analysis Report

2024-10-24 17:02

Sample ID 220905-xccvhsdebm
Target server.exe
SHA256 8c210c79c2b7c4ea35fa08d0c994a3ab26f50ee639c497f341b20da965cfbd1b
Tags
runningrat persistence rat
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

8c210c79c2b7c4ea35fa08d0c994a3ab26f50ee639c497f341b20da965cfbd1b

Threat Level: Known bad

The file server.exe was found to be: Known bad.

Malicious Activity Summary

runningrat persistence rat

Runningrat family

RunningRat

RunningRat payload

Executes dropped EXE

Sets DLL path for service in the registry

Loads dropped DLL

Drops file in System32 directory

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-09-05 18:42

Signatures

RunningRat payload

Description Indicator Process Target
N/A N/A N/A N/A

Runningrat family

runningrat

Analysis: behavioral2

Detonation Overview

Submitted

2022-09-05 18:42

Reported

2022-09-05 18:44

Platform

win10v2004-20220812-en

Max time kernel

149s

Max time network

153s

Command Line

"C:\Users\Admin\AppData\Local\Temp\server.exe"

Signatures

RunningRat

rat 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

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SRDSL\Parameters\ServiceDll = "C:\\Windows\\system32\\240566296.dll" C:\Users\Admin\AppData\Local\Temp\server.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\240566296.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 2280 wrote to memory of 1744 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\SRDSL.exe
PID 2280 wrote to memory of 1744 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\SRDSL.exe
PID 2280 wrote to memory of 1744 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\240566296.dll",MainThread

Network

Country Destination Domain Proto
US 93.184.221.240:80 tcp
US 93.184.221.240:80 tcp
US 93.184.220.29:80 tcp
US 93.184.220.29:80 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
IE 13.69.239.73:443 tcp
US 8.8.8.8:53 226.101.242.52.in-addr.arpa udp
US 8.8.8.8:53 a.2.0.0.0.0.0.0.0.0.0.0.0.0.0.0.3.0.0.0.5.0.8.0.0.3.0.1.3.0.6.2.ip6.arpa udp
HK 20.187.77.247:53762 gd.baojie666.buzz tcp

Files

memory/4900-132-0x0000000010000000-0x000000001000F000-memory.dmp

memory/4900-138-0x00000000007E0000-0x00000000007ED000-memory.dmp

C:\Windows\SysWOW64\240566296.dll

MD5 b532f0aee1e82cd3da3442f49d82bc42
SHA1 a3de63c481c80c963a0b1638c0f6a8ad782fe240
SHA256 f581efc193c4bab4133297451fb1f04649e3861def449e282321bc312d0323fc
SHA512 be6dcc90020b7291a70ee35392b5264d9fb040a567286524a158e058d67b6492128c7ae47d9a3e406f41f784488bb8bd9c3a4440b805aa5989172a0ee4e3ba92

C:\Windows\SysWOW64\240566296.dll

MD5 b532f0aee1e82cd3da3442f49d82bc42
SHA1 a3de63c481c80c963a0b1638c0f6a8ad782fe240
SHA256 f581efc193c4bab4133297451fb1f04649e3861def449e282321bc312d0323fc
SHA512 be6dcc90020b7291a70ee35392b5264d9fb040a567286524a158e058d67b6492128c7ae47d9a3e406f41f784488bb8bd9c3a4440b805aa5989172a0ee4e3ba92

C:\Windows\SysWOW64\240566296.dll

MD5 b532f0aee1e82cd3da3442f49d82bc42
SHA1 a3de63c481c80c963a0b1638c0f6a8ad782fe240
SHA256 f581efc193c4bab4133297451fb1f04649e3861def449e282321bc312d0323fc
SHA512 be6dcc90020b7291a70ee35392b5264d9fb040a567286524a158e058d67b6492128c7ae47d9a3e406f41f784488bb8bd9c3a4440b805aa5989172a0ee4e3ba92

\??\c:\windows\SysWOW64\240566296.dll

MD5 b532f0aee1e82cd3da3442f49d82bc42
SHA1 a3de63c481c80c963a0b1638c0f6a8ad782fe240
SHA256 f581efc193c4bab4133297451fb1f04649e3861def449e282321bc312d0323fc
SHA512 be6dcc90020b7291a70ee35392b5264d9fb040a567286524a158e058d67b6492128c7ae47d9a3e406f41f784488bb8bd9c3a4440b805aa5989172a0ee4e3ba92

memory/1744-141-0x0000000000000000-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\240566296.dll

MD5 b532f0aee1e82cd3da3442f49d82bc42
SHA1 a3de63c481c80c963a0b1638c0f6a8ad782fe240
SHA256 f581efc193c4bab4133297451fb1f04649e3861def449e282321bc312d0323fc
SHA512 be6dcc90020b7291a70ee35392b5264d9fb040a567286524a158e058d67b6492128c7ae47d9a3e406f41f784488bb8bd9c3a4440b805aa5989172a0ee4e3ba92

Analysis: behavioral1

Detonation Overview

Submitted

2022-09-05 18:42

Reported

2022-09-05 18:44

Platform

win7-20220901-en

Max time kernel

150s

Max time network

154s

Command Line

"C:\Users\Admin\AppData\Local\Temp\server.exe"

Signatures

RunningRat

rat 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

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SRDSL\Parameters\ServiceDll = "C:\\Windows\\system32\\7079746.dll" C:\Users\Admin\AppData\Local\Temp\server.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\7079746.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 1160 wrote to memory of 1352 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\SRDSL.exe
PID 1160 wrote to memory of 1352 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\SRDSL.exe
PID 1160 wrote to memory of 1352 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\SRDSL.exe
PID 1160 wrote to memory of 1352 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\7079746.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

Files

memory/2024-54-0x0000000010000000-0x000000001000F000-memory.dmp

memory/2024-58-0x00000000766D1000-0x00000000766D3000-memory.dmp

\Windows\SysWOW64\7079746.dll

MD5 83f9df49e9a62d17370bcd42c4e93bc7
SHA1 80e2a6445b68bdfb4ba6a6594f559b4ade39138c
SHA256 f0bac3b10d6fb3eec434261f1da352304d4f680899edc92adae6029d3f7e461a
SHA512 445df41e02ac3a2c8618fc853bd417524a0b50b6b8583f70f0f521f56a4466244680a43a8148166b3e91ff43dd10adf72c02301b48f84909741b683784eead7e

memory/2024-60-0x0000000000250000-0x000000000025D000-memory.dmp

\Windows\SysWOW64\7079746.dll

MD5 83f9df49e9a62d17370bcd42c4e93bc7
SHA1 80e2a6445b68bdfb4ba6a6594f559b4ade39138c
SHA256 f0bac3b10d6fb3eec434261f1da352304d4f680899edc92adae6029d3f7e461a
SHA512 445df41e02ac3a2c8618fc853bd417524a0b50b6b8583f70f0f521f56a4466244680a43a8148166b3e91ff43dd10adf72c02301b48f84909741b683784eead7e

\??\c:\windows\SysWOW64\7079746.dll

MD5 83f9df49e9a62d17370bcd42c4e93bc7
SHA1 80e2a6445b68bdfb4ba6a6594f559b4ade39138c
SHA256 f0bac3b10d6fb3eec434261f1da352304d4f680899edc92adae6029d3f7e461a
SHA512 445df41e02ac3a2c8618fc853bd417524a0b50b6b8583f70f0f521f56a4466244680a43a8148166b3e91ff43dd10adf72c02301b48f84909741b683784eead7e

\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/1352-65-0x0000000000000000-mapping.dmp

\Windows\SysWOW64\7079746.dll

MD5 83f9df49e9a62d17370bcd42c4e93bc7
SHA1 80e2a6445b68bdfb4ba6a6594f559b4ade39138c
SHA256 f0bac3b10d6fb3eec434261f1da352304d4f680899edc92adae6029d3f7e461a
SHA512 445df41e02ac3a2c8618fc853bd417524a0b50b6b8583f70f0f521f56a4466244680a43a8148166b3e91ff43dd10adf72c02301b48f84909741b683784eead7e

C:\Windows\SysWOW64\SRDSL.exe

MD5 51138beea3e2c21ec44d0932c71762a8
SHA1 8939cf35447b22dd2c6e6f443446acc1bf986d58
SHA256 5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124
SHA512 794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

\Windows\SysWOW64\7079746.dll

MD5 83f9df49e9a62d17370bcd42c4e93bc7
SHA1 80e2a6445b68bdfb4ba6a6594f559b4ade39138c
SHA256 f0bac3b10d6fb3eec434261f1da352304d4f680899edc92adae6029d3f7e461a
SHA512 445df41e02ac3a2c8618fc853bd417524a0b50b6b8583f70f0f521f56a4466244680a43a8148166b3e91ff43dd10adf72c02301b48f84909741b683784eead7e

\Windows\SysWOW64\7079746.dll

MD5 83f9df49e9a62d17370bcd42c4e93bc7
SHA1 80e2a6445b68bdfb4ba6a6594f559b4ade39138c
SHA256 f0bac3b10d6fb3eec434261f1da352304d4f680899edc92adae6029d3f7e461a
SHA512 445df41e02ac3a2c8618fc853bd417524a0b50b6b8583f70f0f521f56a4466244680a43a8148166b3e91ff43dd10adf72c02301b48f84909741b683784eead7e

\Windows\SysWOW64\7079746.dll

MD5 83f9df49e9a62d17370bcd42c4e93bc7
SHA1 80e2a6445b68bdfb4ba6a6594f559b4ade39138c
SHA256 f0bac3b10d6fb3eec434261f1da352304d4f680899edc92adae6029d3f7e461a
SHA512 445df41e02ac3a2c8618fc853bd417524a0b50b6b8583f70f0f521f56a4466244680a43a8148166b3e91ff43dd10adf72c02301b48f84909741b683784eead7e