Malware Analysis Report

2024-10-24 17:03

Sample ID 220905-xa7bcaddhl
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: 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

8c210c79c2b7c4ea35fa08d0c994a3ab26f50ee639c497f341b20da965cfbd1b

Threat Level: Known bad

The file server.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

Program crash

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-09-05 18:40

Signatures

RunningRat payload

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

Runningrat family

runningrat

Analysis: behavioral1

Detonation Overview

Submitted

2022-09-05 18:40

Reported

2022-09-05 18:42

Platform

win7-20220812-en

Max time kernel

149s

Max time network

152s

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\\7076345.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\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
File created C:\Windows\SysWOW64\7076345.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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 276 wrote to memory of 2016 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\SRDSL.exe
PID 276 wrote to memory of 2016 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\SRDSL.exe
PID 276 wrote to memory of 2016 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\SRDSL.exe
PID 276 wrote to memory of 2016 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\7076345.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/1088-54-0x0000000010000000-0x000000001000F000-memory.dmp

memory/1088-58-0x0000000075241000-0x0000000075243000-memory.dmp

memory/1088-60-0x0000000000250000-0x000000000025D000-memory.dmp

\Windows\SysWOW64\7076345.dll

MD5 b12a81048269cc1bad0cf68cc6eda857
SHA1 486588daefd8f9c4fdcb081351bbb7aeb0552dc9
SHA256 9de0e6dcfce129d162569037022fd63d8c3ecbdd53ccc98934820d689eccc6cf
SHA512 cc1afe6986b67a1a4e0006d3754bf515cc8b9e52bccfffd0c18d69c5ea234a02995a7e9c4c9b86c51d148294af3cfc59f697ab8e604b584db17c7a6f17a82028

\??\c:\windows\SysWOW64\7076345.dll

MD5 b12a81048269cc1bad0cf68cc6eda857
SHA1 486588daefd8f9c4fdcb081351bbb7aeb0552dc9
SHA256 9de0e6dcfce129d162569037022fd63d8c3ecbdd53ccc98934820d689eccc6cf
SHA512 cc1afe6986b67a1a4e0006d3754bf515cc8b9e52bccfffd0c18d69c5ea234a02995a7e9c4c9b86c51d148294af3cfc59f697ab8e604b584db17c7a6f17a82028

\Windows\SysWOW64\7076345.dll

MD5 b12a81048269cc1bad0cf68cc6eda857
SHA1 486588daefd8f9c4fdcb081351bbb7aeb0552dc9
SHA256 9de0e6dcfce129d162569037022fd63d8c3ecbdd53ccc98934820d689eccc6cf
SHA512 cc1afe6986b67a1a4e0006d3754bf515cc8b9e52bccfffd0c18d69c5ea234a02995a7e9c4c9b86c51d148294af3cfc59f697ab8e604b584db17c7a6f17a82028

\Windows\SysWOW64\SRDSL.exe

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

memory/2016-65-0x0000000000000000-mapping.dmp

C:\Windows\SysWOW64\SRDSL.exe

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

\Windows\SysWOW64\7076345.dll

MD5 b12a81048269cc1bad0cf68cc6eda857
SHA1 486588daefd8f9c4fdcb081351bbb7aeb0552dc9
SHA256 9de0e6dcfce129d162569037022fd63d8c3ecbdd53ccc98934820d689eccc6cf
SHA512 cc1afe6986b67a1a4e0006d3754bf515cc8b9e52bccfffd0c18d69c5ea234a02995a7e9c4c9b86c51d148294af3cfc59f697ab8e604b584db17c7a6f17a82028

\Windows\SysWOW64\7076345.dll

MD5 b12a81048269cc1bad0cf68cc6eda857
SHA1 486588daefd8f9c4fdcb081351bbb7aeb0552dc9
SHA256 9de0e6dcfce129d162569037022fd63d8c3ecbdd53ccc98934820d689eccc6cf
SHA512 cc1afe6986b67a1a4e0006d3754bf515cc8b9e52bccfffd0c18d69c5ea234a02995a7e9c4c9b86c51d148294af3cfc59f697ab8e604b584db17c7a6f17a82028

\Windows\SysWOW64\7076345.dll

MD5 b12a81048269cc1bad0cf68cc6eda857
SHA1 486588daefd8f9c4fdcb081351bbb7aeb0552dc9
SHA256 9de0e6dcfce129d162569037022fd63d8c3ecbdd53ccc98934820d689eccc6cf
SHA512 cc1afe6986b67a1a4e0006d3754bf515cc8b9e52bccfffd0c18d69c5ea234a02995a7e9c4c9b86c51d148294af3cfc59f697ab8e604b584db17c7a6f17a82028

C:\Windows\SysWOW64\SRDSL.exe

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

\Windows\SysWOW64\7076345.dll

MD5 b12a81048269cc1bad0cf68cc6eda857
SHA1 486588daefd8f9c4fdcb081351bbb7aeb0552dc9
SHA256 9de0e6dcfce129d162569037022fd63d8c3ecbdd53ccc98934820d689eccc6cf
SHA512 cc1afe6986b67a1a4e0006d3754bf515cc8b9e52bccfffd0c18d69c5ea234a02995a7e9c4c9b86c51d148294af3cfc59f697ab8e604b584db17c7a6f17a82028

Analysis: behavioral2

Detonation Overview

Submitted

2022-09-05 18:40

Reported

2022-09-05 18:42

Platform

win10v2004-20220812-en

Max time kernel

142s

Max time network

129s

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

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\server.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\server.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\240572015.dll C:\Users\Admin\AppData\Local\Temp\server.exe N/A

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\server.exe

Processes

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

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

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4872 -ip 4872

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4872 -s 464

Network

Country Destination Domain Proto
US 209.197.3.8:80 tcp
US 209.197.3.8:80 tcp

Files

memory/4872-132-0x0000000010000000-0x000000001000F000-memory.dmp

C:\Windows\SysWOW64\240572015.dll

MD5 b12a81048269cc1bad0cf68cc6eda857
SHA1 486588daefd8f9c4fdcb081351bbb7aeb0552dc9
SHA256 9de0e6dcfce129d162569037022fd63d8c3ecbdd53ccc98934820d689eccc6cf
SHA512 cc1afe6986b67a1a4e0006d3754bf515cc8b9e52bccfffd0c18d69c5ea234a02995a7e9c4c9b86c51d148294af3cfc59f697ab8e604b584db17c7a6f17a82028

memory/4872-138-0x00000000006A0000-0x00000000006AD000-memory.dmp

C:\Windows\SysWOW64\240572015.dll

MD5 b12a81048269cc1bad0cf68cc6eda857
SHA1 486588daefd8f9c4fdcb081351bbb7aeb0552dc9
SHA256 9de0e6dcfce129d162569037022fd63d8c3ecbdd53ccc98934820d689eccc6cf
SHA512 cc1afe6986b67a1a4e0006d3754bf515cc8b9e52bccfffd0c18d69c5ea234a02995a7e9c4c9b86c51d148294af3cfc59f697ab8e604b584db17c7a6f17a82028