Malware Analysis Report

2024-10-24 17:03

Sample ID 241017-pp2qea1cll
Target a2d7a570dc6b46bed057743394b59577.exe
SHA256 96bed5fdefc903bc41e0ffbe328e8ed6cb4c3261dd711b3e3e7b56df45d90135
Tags
rat runningrat discovery persistence
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

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

96bed5fdefc903bc41e0ffbe328e8ed6cb4c3261dd711b3e3e7b56df45d90135

Threat Level: Known bad

The file a2d7a570dc6b46bed057743394b59577.exe was found to be: Known bad.

Malicious Activity Summary

rat runningrat discovery persistence

Runningrat family

RunningRat payload

RunningRat

Server Software Component: Terminal Services DLL

Executes dropped EXE

Deletes itself

Loads dropped DLL

Checks computer location settings

Drops file in System32 directory

Creates a Windows Service

System Location Discovery: System Language Discovery

Unsigned PE

System Network Configuration Discovery: Internet Connection Discovery

Enumerates physical storage devices

Runs ping.exe

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-10-17 12:31

Signatures

RunningRat payload

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

Runningrat family

runningrat

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-10-17 12:31

Reported

2024-10-17 12:33

Platform

win7-20240903-en

Max time kernel

140s

Max time network

153s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a2d7a570dc6b46bed057743394b59577.exe"

Signatures

RunningRat

rat runningrat

Server Software Component: Terminal Services DLL

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SySyeu\Parameters\ServiceDll = "C:\\Users\\Admin\\AppData\\Local\\Temp\\259454856.dll" C:\Users\Admin\AppData\Local\Temp\a2d7a570dc6b46bed057743394b59577.exe N/A

Deletes itself

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\cmd.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\SySyeu.exe N/A

Creates a Windows Service

persistence

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\SySyeu.exe C:\Windows\SysWOW64\svchost.exe N/A
File opened for modification C:\Windows\SysWOW64\SySyeu.exe C:\Windows\SysWOW64\svchost.exe N/A

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\svchost.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\PING.EXE N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\SySyeu.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\a2d7a570dc6b46bed057743394b59577.exe N/A

System Network Configuration Discovery: Internet Connection Discovery

discovery
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\cmd.exe N/A
N/A N/A C:\Windows\SysWOW64\PING.EXE N/A

Runs ping.exe

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\PING.EXE N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\a2d7a570dc6b46bed057743394b59577.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\a2d7a570dc6b46bed057743394b59577.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\a2d7a570dc6b46bed057743394b59577.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\a2d7a570dc6b46bed057743394b59577.exe

"C:\Users\Admin\AppData\Local\Temp\a2d7a570dc6b46bed057743394b59577.exe"

C:\Windows\SysWOW64\svchost.exe

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

C:\Windows\SysWOW64\svchost.exe

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

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 -n 1 && del /f/q "C:\Users\Admin\AppData\Local\Temp\a2d7a570dc6b46bed057743394b59577.exe"

C:\Windows\SysWOW64\PING.EXE

ping 127.0.0.1 -n 1

C:\Windows\SysWOW64\SySyeu.exe

C:\Windows\system32\SySyeu.exe "c:\users\admin\appdata\local\temp\259454856.dll",MainThread

Network

Country Destination Domain Proto
CN 119.91.152.151:8321 tcp
CN 119.91.152.151:8321 tcp
CN 119.91.152.151:8321 tcp
CN 119.91.152.151:8321 tcp
CN 119.91.152.151:8321 tcp

Files

\Users\Admin\AppData\Local\Temp\259454856.dll

MD5 db598538e7a70b73298f6424ae507e02
SHA1 d06a04fb9ca1bb8da5974870196ae5c0eadc1fa9
SHA256 cc4ab82995b0c0c827e99870948ef6a1371d4d1ed6d167a087c0d5c123d0f15e
SHA512 ebedb94e2ba77836317596557fb447e6abc78fecfafce8de900d70202994fe829459665e0dec8813c51039b64a12d08258bc6074324b729994b61e8467f5e3fa

C:\Windows\SysWOW64\SySyeu.exe

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-10-17 12:31

Reported

2024-10-17 12:33

Platform

win10v2004-20241007-en

Max time kernel

140s

Max time network

148s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a2d7a570dc6b46bed057743394b59577.exe"

Signatures

RunningRat

rat runningrat

Server Software Component: Terminal Services DLL

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SySyeu\Parameters\ServiceDll = "C:\\Users\\Admin\\AppData\\Local\\Temp\\240627328.dll" C:\Users\Admin\AppData\Local\Temp\a2d7a570dc6b46bed057743394b59577.exe N/A

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\a2d7a570dc6b46bed057743394b59577.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\SySyeu.exe N/A

Creates a Windows Service

persistence

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\SySyeu.exe C:\Windows\SysWOW64\svchost.exe N/A
File opened for modification C:\Windows\SysWOW64\SySyeu.exe C:\Windows\SysWOW64\svchost.exe N/A

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\PING.EXE N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\SySyeu.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\a2d7a570dc6b46bed057743394b59577.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\svchost.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A

System Network Configuration Discovery: Internet Connection Discovery

discovery
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\cmd.exe N/A
N/A N/A C:\Windows\SysWOW64\PING.EXE N/A

Runs ping.exe

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\PING.EXE N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\a2d7a570dc6b46bed057743394b59577.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\a2d7a570dc6b46bed057743394b59577.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\a2d7a570dc6b46bed057743394b59577.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\a2d7a570dc6b46bed057743394b59577.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\a2d7a570dc6b46bed057743394b59577.exe

"C:\Users\Admin\AppData\Local\Temp\a2d7a570dc6b46bed057743394b59577.exe"

C:\Windows\SysWOW64\svchost.exe

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

C:\Windows\SysWOW64\svchost.exe

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

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 -n 1 && del /f/q "C:\Users\Admin\AppData\Local\Temp\a2d7a570dc6b46bed057743394b59577.exe"

C:\Windows\SysWOW64\PING.EXE

ping 127.0.0.1 -n 1

C:\Windows\SysWOW64\SySyeu.exe

C:\Windows\system32\SySyeu.exe "c:\users\admin\appdata\local\temp\240627328.dll",MainThread

Network

Country Destination Domain Proto
US 8.8.8.8:53 0.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 138.201.86.20.in-addr.arpa udp
CN 119.91.152.151:8321 tcp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
CN 119.91.152.151:8321 tcp
US 8.8.8.8:53 53.210.109.20.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 83.210.23.2.in-addr.arpa udp
CN 119.91.152.151:8321 tcp
CN 119.91.152.151:8321 tcp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 10.28.171.150.in-addr.arpa udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
CN 119.91.152.151:8321 tcp

Files

C:\Users\Admin\AppData\Local\Temp\240627328.dll

MD5 db598538e7a70b73298f6424ae507e02
SHA1 d06a04fb9ca1bb8da5974870196ae5c0eadc1fa9
SHA256 cc4ab82995b0c0c827e99870948ef6a1371d4d1ed6d167a087c0d5c123d0f15e
SHA512 ebedb94e2ba77836317596557fb447e6abc78fecfafce8de900d70202994fe829459665e0dec8813c51039b64a12d08258bc6074324b729994b61e8467f5e3fa

C:\Windows\SysWOW64\SySyeu.exe

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