Malware Analysis Report

2024-10-23 19:27

Sample ID 240628-t6321szcmq
Target c4e10100c5cf7bec2d9d0a1d7203ddb2.exe
SHA256 fdc933b64df0832a1f88f0e19a4cab67fb110d54c4913367a7215d7890f8a5b7
Tags
rat asyncrat execution 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

fdc933b64df0832a1f88f0e19a4cab67fb110d54c4913367a7215d7890f8a5b7

Threat Level: Known bad

The file c4e10100c5cf7bec2d9d0a1d7203ddb2.exe was found to be: Known bad.

Malicious Activity Summary

rat asyncrat execution persistence

Asyncrat family

AsyncRat

Async RAT payload

Command and Scripting Interpreter: PowerShell

Adds Run key to start application

Unsigned PE

Enumerates physical storage devices

Uses Task Scheduler COM API

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Suspicious use of SetWindowsHookEx

Modifies registry class

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-28 16:41

Signatures

Async RAT payload

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

Asyncrat family

asyncrat

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-28 16:41

Reported

2024-06-28 16:43

Platform

win7-20240221-en

Max time kernel

146s

Max time network

148s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c4e10100c5cf7bec2d9d0a1d7203ddb2.exe"

Signatures

AsyncRat

rat asyncrat

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000\Software\Microsoft\Windows\CurrentVersion\Run\JkanJjJrabo = "C:\\Users\\Admin\\AppData\\Local\\Temp\\c4e10100c5cf7bec2d9d0a1d7203ddb2.exe" C:\Users\Admin\AppData\Local\Temp\c4e10100c5cf7bec2d9d0a1d7203ddb2.exe N/A

Enumerates physical storage devices

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\ms-settings\shell\open C:\Users\Admin\AppData\Local\Temp\c4e10100c5cf7bec2d9d0a1d7203ddb2.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\ms-settings\shell\open\command\ C:\Users\Admin\AppData\Local\Temp\c4e10100c5cf7bec2d9d0a1d7203ddb2.exe N/A
Key created \REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\ms-settings\shell\open\command C:\Users\Admin\AppData\Local\Temp\c4e10100c5cf7bec2d9d0a1d7203ddb2.exe N/A
Key created \REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\ms-settings\shell C:\Users\Admin\AppData\Local\Temp\c4e10100c5cf7bec2d9d0a1d7203ddb2.exe N/A
Key deleted \REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\ms-settings\shell\open\command C:\Users\Admin\AppData\Local\Temp\c4e10100c5cf7bec2d9d0a1d7203ddb2.exe N/A
Key deleted \REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\ms-settings\shell\open C:\Users\Admin\AppData\Local\Temp\c4e10100c5cf7bec2d9d0a1d7203ddb2.exe N/A
Key deleted \REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\ms-settings\shell C:\Users\Admin\AppData\Local\Temp\c4e10100c5cf7bec2d9d0a1d7203ddb2.exe N/A
Key deleted \REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\ms-settings C:\Users\Admin\AppData\Local\Temp\c4e10100c5cf7bec2d9d0a1d7203ddb2.exe N/A
Key created \REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\ms-settings C:\Users\Admin\AppData\Local\Temp\c4e10100c5cf7bec2d9d0a1d7203ddb2.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\c4e10100c5cf7bec2d9d0a1d7203ddb2.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\c4e10100c5cf7bec2d9d0a1d7203ddb2.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2156 wrote to memory of 2052 N/A C:\Users\Admin\AppData\Local\Temp\c4e10100c5cf7bec2d9d0a1d7203ddb2.exe C:\Windows\System32\cmd.exe
PID 2156 wrote to memory of 2052 N/A C:\Users\Admin\AppData\Local\Temp\c4e10100c5cf7bec2d9d0a1d7203ddb2.exe C:\Windows\System32\cmd.exe
PID 2156 wrote to memory of 2052 N/A C:\Users\Admin\AppData\Local\Temp\c4e10100c5cf7bec2d9d0a1d7203ddb2.exe C:\Windows\System32\cmd.exe
PID 2156 wrote to memory of 3012 N/A C:\Users\Admin\AppData\Local\Temp\c4e10100c5cf7bec2d9d0a1d7203ddb2.exe C:\Windows\System32\cmd.exe
PID 2156 wrote to memory of 3012 N/A C:\Users\Admin\AppData\Local\Temp\c4e10100c5cf7bec2d9d0a1d7203ddb2.exe C:\Windows\System32\cmd.exe
PID 2156 wrote to memory of 3012 N/A C:\Users\Admin\AppData\Local\Temp\c4e10100c5cf7bec2d9d0a1d7203ddb2.exe C:\Windows\System32\cmd.exe
PID 2052 wrote to memory of 2608 N/A C:\Windows\System32\cmd.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2052 wrote to memory of 2608 N/A C:\Windows\System32\cmd.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2052 wrote to memory of 2608 N/A C:\Windows\System32\cmd.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 3012 wrote to memory of 2644 N/A C:\Windows\System32\cmd.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 3012 wrote to memory of 2644 N/A C:\Windows\System32\cmd.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 3012 wrote to memory of 2644 N/A C:\Windows\System32\cmd.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 3012 wrote to memory of 2824 N/A C:\Windows\System32\cmd.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 3012 wrote to memory of 2824 N/A C:\Windows\System32\cmd.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 3012 wrote to memory of 2824 N/A C:\Windows\System32\cmd.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 3012 wrote to memory of 500 N/A C:\Windows\System32\cmd.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 3012 wrote to memory of 500 N/A C:\Windows\System32\cmd.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 3012 wrote to memory of 500 N/A C:\Windows\System32\cmd.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 3012 wrote to memory of 1632 N/A C:\Windows\System32\cmd.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 3012 wrote to memory of 1632 N/A C:\Windows\System32\cmd.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 3012 wrote to memory of 1632 N/A C:\Windows\System32\cmd.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 3012 wrote to memory of 2880 N/A C:\Windows\System32\cmd.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 3012 wrote to memory of 2880 N/A C:\Windows\System32\cmd.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 3012 wrote to memory of 2880 N/A C:\Windows\System32\cmd.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\c4e10100c5cf7bec2d9d0a1d7203ddb2.exe

"C:\Users\Admin\AppData\Local\Temp\c4e10100c5cf7bec2d9d0a1d7203ddb2.exe"

C:\Windows\System32\cmd.exe

"C:\Windows\System32\cmd.exe" /k start /b powershell -inputformat none -outputformat none -NonInteractive -Command Add-MpPreference -ExclusionPath C:\Users\Admin\AppData\Local\Temp\c4e10100c5cf7bec2d9d0a1d7203ddb2.exe & exit

C:\Windows\System32\cmd.exe

"C:\Windows\System32\cmd.exe" /k start /b powershell.exe Set-MpPreference -DisableIntrusionPreventionSystem $true -DisableIOAVProtection $true -DisableRealtimeMonitoring $true -DisableScriptScanning $true -EnableControlledFolderAccess Disabled -EnableNetworkProtection AuditMode -Force -MAPSReporting Disabled -SubmitSamplesConsent NeverSend && powershell Set-MpPreference -SubmitSamplesConsent 2 & powershell.exe -inputformat none -outputformat none -NonInteractive -Command "Add-MpPreference -ExclusionPath %USERPROFILE%\AppData" & powershell.exe -inputformat none -outputformat none -NonInteractive -Command "Add-MpPreference -ExclusionPath %USERPROFILE%\Local" & powershell.exe -command "Set-MpPreference -ExclusionExtension '.exe'" & exit

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

powershell -inputformat none -outputformat none -NonInteractive -Command Add-MpPreference -ExclusionPath C:\Users\Admin\AppData\Local\Temp\c4e10100c5cf7bec2d9d0a1d7203ddb2.exe

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

powershell.exe Set-MpPreference -DisableIntrusionPreventionSystem $true -DisableIOAVProtection $true -DisableRealtimeMonitoring $true -DisableScriptScanning $true -EnableControlledFolderAccess Disabled -EnableNetworkProtection AuditMode -Force -MAPSReporting Disabled -SubmitSamplesConsent NeverSend

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

powershell Set-MpPreference -SubmitSamplesConsent 2

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

powershell.exe -inputformat none -outputformat none -NonInteractive -Command "Add-MpPreference -ExclusionPath C:\Users\Admin\AppData"

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

powershell.exe -inputformat none -outputformat none -NonInteractive -Command "Add-MpPreference -ExclusionPath C:\Users\Admin\Local"

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

powershell.exe -command "Set-MpPreference -ExclusionExtension '.exe'"

Network

Country Destination Domain Proto
IT 185.196.8.223:7777 tcp
IT 185.196.8.223:7777 tcp
IT 185.196.8.223:7777 tcp
IT 185.196.8.223:7777 tcp
IT 185.196.8.223:7777 tcp
IT 185.196.8.223:7777 tcp
IT 185.196.8.223:7777 tcp
IT 185.196.8.223:7777 tcp
IT 185.196.8.223:7777 tcp
IT 185.196.8.223:7777 tcp
IT 185.196.8.223:7777 tcp
IT 185.196.8.223:7777 tcp
IT 185.196.8.223:7777 tcp
IT 185.196.8.223:7777 tcp
IT 185.196.8.223:7777 tcp
IT 185.196.8.223:7777 tcp
IT 185.196.8.223:7777 tcp
IT 185.196.8.223:7777 tcp
IT 185.196.8.223:7777 tcp
IT 185.196.8.223:7777 tcp
IT 185.196.8.223:7777 tcp
IT 185.196.8.223:7777 tcp

Files

memory/2156-0-0x000007FEF5BE3000-0x000007FEF5BE4000-memory.dmp

memory/2156-1-0x00000000002F0000-0x000000000035C000-memory.dmp

memory/2156-2-0x000007FEF5BE0000-0x000007FEF65CC000-memory.dmp

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\Y070IKWTL0KLCYZJSBAR.temp

MD5 bb96597420ee22a94859bbb917f660f6
SHA1 1fa36f615713ccb0cc2bb3937a69ee20e4a37fcf
SHA256 2522dea1eae3b7a5968edd61c844c8ce6ed867390d744594f7313c1e22499000
SHA512 00dac3599231bc32fd59ded0848dc78354e06e56c6db39f4b3f64a6b4e20011d56267c7fd30fe967cf72e94c61e9880b0d2b8b7c8f4110149e8eea0c198e2e1b

memory/2824-17-0x000000001B720000-0x000000001BA02000-memory.dmp

memory/2824-18-0x00000000021D0000-0x00000000021D8000-memory.dmp

memory/1632-29-0x000000001B750000-0x000000001BA32000-memory.dmp

memory/1632-30-0x0000000001E90000-0x0000000001E98000-memory.dmp

memory/2156-36-0x000007FEF5BE3000-0x000007FEF5BE4000-memory.dmp

memory/2156-37-0x000007FEF5BE0000-0x000007FEF65CC000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-28 16:41

Reported

2024-06-28 16:43

Platform

win10v2004-20240508-en

Max time kernel

147s

Max time network

155s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c4e10100c5cf7bec2d9d0a1d7203ddb2.exe"

Signatures

AsyncRat

rat asyncrat

Modifies registry class

Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000_Classes\ms-settings\shell\open\command\ C:\Users\Admin\AppData\Local\Temp\c4e10100c5cf7bec2d9d0a1d7203ddb2.exe N/A
Key created \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000_Classes\ms-settings\shell\open\command C:\Users\Admin\AppData\Local\Temp\c4e10100c5cf7bec2d9d0a1d7203ddb2.exe N/A
Key created \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000_Classes\ms-settings C:\Users\Admin\AppData\Local\Temp\c4e10100c5cf7bec2d9d0a1d7203ddb2.exe N/A
Key created \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000_Classes\ms-settings\shell C:\Users\Admin\AppData\Local\Temp\c4e10100c5cf7bec2d9d0a1d7203ddb2.exe N/A
Key created \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000_Classes\ms-settings\shell\open C:\Users\Admin\AppData\Local\Temp\c4e10100c5cf7bec2d9d0a1d7203ddb2.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\c4e10100c5cf7bec2d9d0a1d7203ddb2.exe

"C:\Users\Admin\AppData\Local\Temp\c4e10100c5cf7bec2d9d0a1d7203ddb2.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp

Files

memory/1628-0-0x0000000000A30000-0x0000000000A9C000-memory.dmp

memory/1628-1-0x00007FFB82733000-0x00007FFB82735000-memory.dmp

memory/1628-2-0x00007FFB82730000-0x00007FFB831F1000-memory.dmp

memory/1628-3-0x00007FFB82730000-0x00007FFB831F1000-memory.dmp