Malware Analysis Report

2024-10-24 17:03

Sample ID 220802-frnf5abcc9
Target c.exe
SHA256 d759e1ec1af4392131aa3aa7f8446f8078d16bb3405b12ed62f123aca95c969c
Tags
runningrat persistence rat
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

d759e1ec1af4392131aa3aa7f8446f8078d16bb3405b12ed62f123aca95c969c

Threat Level: Known bad

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

Malicious Activity Summary

runningrat persistence rat

RunningRat

RunningRat payload

Runningrat family

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

2022-08-02 05:06

Signatures

RunningRat payload

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

Runningrat family

runningrat

Analysis: behavioral1

Detonation Overview

Submitted

2022-08-02 05:06

Reported

2022-08-02 05:09

Platform

win7-20220715-en

Max time kernel

127s

Max time network

49s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c.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\WindowsSystem32.exe N/A

Sets DLL path for service in the registry

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\WindowsSystem32\Parameters\ServiceDll = "C:\\Users\\Admin\\AppData\\Local\\Temp\\7080089.dll" C:\Users\Admin\AppData\Local\Temp\c.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\WindowsSystem32.exe C:\Windows\SysWOW64\svchost.exe N/A
File opened for modification C:\Windows\SysWOW64\WindowsSystem32.exe C:\Windows\SysWOW64\svchost.exe N/A
File opened for modification C:\Windows\SysWOW64\ini.ini C:\Users\Admin\AppData\Local\Temp\c.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1272 wrote to memory of 1048 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\WindowsSystem32.exe
PID 1272 wrote to memory of 1048 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\WindowsSystem32.exe
PID 1272 wrote to memory of 1048 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\WindowsSystem32.exe
PID 1272 wrote to memory of 1048 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\WindowsSystem32.exe

Processes

C:\Users\Admin\AppData\Local\Temp\c.exe

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

C:\Windows\SysWOW64\svchost.exe

C:\Windows\SysWOW64\svchost.exe -k "WindowsSystem32"

C:\Windows\SysWOW64\svchost.exe

C:\Windows\SysWOW64\svchost.exe -k "WindowsSystem32"

C:\Windows\SysWOW64\WindowsSystem32.exe

C:\Windows\system32\WindowsSystem32.exe "c:\users\admin\appdata\local\temp\7080089.dll",MainThread

Network

Country Destination Domain Proto
US 8.8.8.8:53 a.yuantahaizai.biz udp

Files

memory/668-54-0x0000000010000000-0x000000001000F000-memory.dmp

memory/668-58-0x0000000076C01000-0x0000000076C03000-memory.dmp

\Users\Admin\AppData\Local\Temp\7080089.dll

MD5 5237af4ad711204e8f3cb7aa48b5b50a
SHA1 beac930860f76be9c529bdd949b88fb4827197c4
SHA256 7c62786ad6f16a3b63c0fd5809d58552b6de4c935d01f05048484248120813c1
SHA512 20f90a791ae191096cb1dadcb96f01c9bbd38a3d0d21a3e6812f4a5811f46ccb80e5f10f2a59d7af23cd35557630b5cbf19d9286646a28673745efe5bf1228de

memory/668-60-0x0000000000250000-0x000000000025D000-memory.dmp

\Users\Admin\AppData\Local\Temp\7080089.dll

MD5 5237af4ad711204e8f3cb7aa48b5b50a
SHA1 beac930860f76be9c529bdd949b88fb4827197c4
SHA256 7c62786ad6f16a3b63c0fd5809d58552b6de4c935d01f05048484248120813c1
SHA512 20f90a791ae191096cb1dadcb96f01c9bbd38a3d0d21a3e6812f4a5811f46ccb80e5f10f2a59d7af23cd35557630b5cbf19d9286646a28673745efe5bf1228de

\??\c:\users\admin\appdata\local\temp\7080089.dll

MD5 5237af4ad711204e8f3cb7aa48b5b50a
SHA1 beac930860f76be9c529bdd949b88fb4827197c4
SHA256 7c62786ad6f16a3b63c0fd5809d58552b6de4c935d01f05048484248120813c1
SHA512 20f90a791ae191096cb1dadcb96f01c9bbd38a3d0d21a3e6812f4a5811f46ccb80e5f10f2a59d7af23cd35557630b5cbf19d9286646a28673745efe5bf1228de

\Windows\SysWOW64\WindowsSystem32.exe

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

memory/1048-65-0x0000000000000000-mapping.dmp

C:\Windows\SysWOW64\WindowsSystem32.exe

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

\Users\Admin\AppData\Local\Temp\7080089.dll

MD5 5237af4ad711204e8f3cb7aa48b5b50a
SHA1 beac930860f76be9c529bdd949b88fb4827197c4
SHA256 7c62786ad6f16a3b63c0fd5809d58552b6de4c935d01f05048484248120813c1
SHA512 20f90a791ae191096cb1dadcb96f01c9bbd38a3d0d21a3e6812f4a5811f46ccb80e5f10f2a59d7af23cd35557630b5cbf19d9286646a28673745efe5bf1228de

\Users\Admin\AppData\Local\Temp\7080089.dll

MD5 5237af4ad711204e8f3cb7aa48b5b50a
SHA1 beac930860f76be9c529bdd949b88fb4827197c4
SHA256 7c62786ad6f16a3b63c0fd5809d58552b6de4c935d01f05048484248120813c1
SHA512 20f90a791ae191096cb1dadcb96f01c9bbd38a3d0d21a3e6812f4a5811f46ccb80e5f10f2a59d7af23cd35557630b5cbf19d9286646a28673745efe5bf1228de

\Users\Admin\AppData\Local\Temp\7080089.dll

MD5 5237af4ad711204e8f3cb7aa48b5b50a
SHA1 beac930860f76be9c529bdd949b88fb4827197c4
SHA256 7c62786ad6f16a3b63c0fd5809d58552b6de4c935d01f05048484248120813c1
SHA512 20f90a791ae191096cb1dadcb96f01c9bbd38a3d0d21a3e6812f4a5811f46ccb80e5f10f2a59d7af23cd35557630b5cbf19d9286646a28673745efe5bf1228de

C:\Windows\SysWOW64\WindowsSystem32.exe

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

\Users\Admin\AppData\Local\Temp\7080089.dll

MD5 5237af4ad711204e8f3cb7aa48b5b50a
SHA1 beac930860f76be9c529bdd949b88fb4827197c4
SHA256 7c62786ad6f16a3b63c0fd5809d58552b6de4c935d01f05048484248120813c1
SHA512 20f90a791ae191096cb1dadcb96f01c9bbd38a3d0d21a3e6812f4a5811f46ccb80e5f10f2a59d7af23cd35557630b5cbf19d9286646a28673745efe5bf1228de

Analysis: behavioral2

Detonation Overview

Submitted

2022-08-02 05:06

Reported

2022-08-02 05:09

Platform

win10v2004-20220721-en

Max time kernel

128s

Max time network

152s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c.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\WindowsSystem32.exe N/A

Sets DLL path for service in the registry

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\WindowsSystem32\Parameters\ServiceDll = "C:\\Users\\Admin\\AppData\\Local\\Temp\\240573296.dll" C:\Users\Admin\AppData\Local\Temp\c.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\c.exe N/A
File created C:\Windows\SysWOW64\WindowsSystem32.exe C:\Windows\SysWOW64\svchost.exe N/A
File opened for modification C:\Windows\SysWOW64\WindowsSystem32.exe C:\Windows\SysWOW64\svchost.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4816 wrote to memory of 2296 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\WindowsSystem32.exe
PID 4816 wrote to memory of 2296 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\WindowsSystem32.exe
PID 4816 wrote to memory of 2296 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\WindowsSystem32.exe

Processes

C:\Users\Admin\AppData\Local\Temp\c.exe

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

C:\Windows\SysWOW64\svchost.exe

C:\Windows\SysWOW64\svchost.exe -k "WindowsSystem32"

C:\Windows\SysWOW64\svchost.exe

C:\Windows\SysWOW64\svchost.exe -k "WindowsSystem32"

C:\Windows\SysWOW64\WindowsSystem32.exe

C:\Windows\system32\WindowsSystem32.exe "c:\users\admin\appdata\local\temp\240573296.dll",MainThread

Network

Country Destination Domain Proto
US 8.8.8.8:53 a.yuantahaizai.biz udp
FR 40.79.141.152:443 tcp
BE 67.27.153.126:80 tcp
FR 2.18.109.224:443 tcp
US 93.184.220.29:80 tcp
US 8.8.8.8:53 a.yuantahaizai.biz udp

Files

memory/1380-130-0x0000000010000000-0x000000001000F000-memory.dmp

memory/1380-136-0x0000000000590000-0x000000000059D000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\240573296.dll

MD5 5237af4ad711204e8f3cb7aa48b5b50a
SHA1 beac930860f76be9c529bdd949b88fb4827197c4
SHA256 7c62786ad6f16a3b63c0fd5809d58552b6de4c935d01f05048484248120813c1
SHA512 20f90a791ae191096cb1dadcb96f01c9bbd38a3d0d21a3e6812f4a5811f46ccb80e5f10f2a59d7af23cd35557630b5cbf19d9286646a28673745efe5bf1228de

C:\Users\Admin\AppData\Local\Temp\240573296.dll

MD5 5237af4ad711204e8f3cb7aa48b5b50a
SHA1 beac930860f76be9c529bdd949b88fb4827197c4
SHA256 7c62786ad6f16a3b63c0fd5809d58552b6de4c935d01f05048484248120813c1
SHA512 20f90a791ae191096cb1dadcb96f01c9bbd38a3d0d21a3e6812f4a5811f46ccb80e5f10f2a59d7af23cd35557630b5cbf19d9286646a28673745efe5bf1228de

\??\c:\users\admin\appdata\local\temp\240573296.dll

MD5 5237af4ad711204e8f3cb7aa48b5b50a
SHA1 beac930860f76be9c529bdd949b88fb4827197c4
SHA256 7c62786ad6f16a3b63c0fd5809d58552b6de4c935d01f05048484248120813c1
SHA512 20f90a791ae191096cb1dadcb96f01c9bbd38a3d0d21a3e6812f4a5811f46ccb80e5f10f2a59d7af23cd35557630b5cbf19d9286646a28673745efe5bf1228de

C:\Users\Admin\AppData\Local\Temp\240573296.dll

MD5 5237af4ad711204e8f3cb7aa48b5b50a
SHA1 beac930860f76be9c529bdd949b88fb4827197c4
SHA256 7c62786ad6f16a3b63c0fd5809d58552b6de4c935d01f05048484248120813c1
SHA512 20f90a791ae191096cb1dadcb96f01c9bbd38a3d0d21a3e6812f4a5811f46ccb80e5f10f2a59d7af23cd35557630b5cbf19d9286646a28673745efe5bf1228de

memory/2296-139-0x0000000000000000-mapping.dmp

C:\Windows\SysWOW64\WindowsSystem32.exe

MD5 889b99c52a60dd49227c5e485a016679
SHA1 8fa889e456aa646a4d0a4349977430ce5fa5e2d7
SHA256 6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910
SHA512 08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641

C:\Windows\SysWOW64\WindowsSystem32.exe

MD5 889b99c52a60dd49227c5e485a016679
SHA1 8fa889e456aa646a4d0a4349977430ce5fa5e2d7
SHA256 6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910
SHA512 08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641

C:\Users\Admin\AppData\Local\Temp\240573296.dll

MD5 5237af4ad711204e8f3cb7aa48b5b50a
SHA1 beac930860f76be9c529bdd949b88fb4827197c4
SHA256 7c62786ad6f16a3b63c0fd5809d58552b6de4c935d01f05048484248120813c1
SHA512 20f90a791ae191096cb1dadcb96f01c9bbd38a3d0d21a3e6812f4a5811f46ccb80e5f10f2a59d7af23cd35557630b5cbf19d9286646a28673745efe5bf1228de