Malware Analysis Report

2024-10-23 19:27

Sample ID 240629-cdxwvs1glm
Target fdc933b64df0832a1f88f0e19a4cab67fb110d54c4913367a7215d7890f8a5b7.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 fdc933b64df0832a1f88f0e19a4cab67fb110d54c4913367a7215d7890f8a5b7.exe was found to be: Known bad.

Malicious Activity Summary

rat asyncrat execution persistence

Async RAT payload

Asyncrat family

AsyncRat

Command and Scripting Interpreter: PowerShell

Adds Run key to start application

Unsigned PE

Enumerates physical storage devices

Suspicious use of SetWindowsHookEx

Suspicious behavior: EnumeratesProcesses

Uses Task Scheduler COM API

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

Modifies registry class

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-29 01:58

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

2024-06-29 01:58

Reported

2024-06-29 02:00

Platform

win7-20240508-en

Max time kernel

144s

Max time network

146s

Command Line

"C:\Users\Admin\AppData\Local\Temp\fdc933b64df0832a1f88f0e19a4cab67fb110d54c4913367a7215d7890f8a5b7.exe"

Signatures

AsyncRat

rat asyncrat

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000\Software\Microsoft\Windows\CurrentVersion\Run\JkanJjJrabo = "C:\\Users\\Admin\\AppData\\Local\\Temp\\fdc933b64df0832a1f88f0e19a4cab67fb110d54c4913367a7215d7890f8a5b7.exe" C:\Users\Admin\AppData\Local\Temp\fdc933b64df0832a1f88f0e19a4cab67fb110d54c4913367a7215d7890f8a5b7.exe N/A

Enumerates physical storage devices

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\ms-settings\shell C:\Users\Admin\AppData\Local\Temp\fdc933b64df0832a1f88f0e19a4cab67fb110d54c4913367a7215d7890f8a5b7.exe N/A
Key created \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\ms-settings\shell\open C:\Users\Admin\AppData\Local\Temp\fdc933b64df0832a1f88f0e19a4cab67fb110d54c4913367a7215d7890f8a5b7.exe N/A
Key deleted \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\ms-settings\shell\open\command C:\Users\Admin\AppData\Local\Temp\fdc933b64df0832a1f88f0e19a4cab67fb110d54c4913367a7215d7890f8a5b7.exe N/A
Key deleted \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\ms-settings\shell\open C:\Users\Admin\AppData\Local\Temp\fdc933b64df0832a1f88f0e19a4cab67fb110d54c4913367a7215d7890f8a5b7.exe N/A
Key deleted \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\ms-settings C:\Users\Admin\AppData\Local\Temp\fdc933b64df0832a1f88f0e19a4cab67fb110d54c4913367a7215d7890f8a5b7.exe N/A
Key created \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\ms-settings\shell\open\command C:\Users\Admin\AppData\Local\Temp\fdc933b64df0832a1f88f0e19a4cab67fb110d54c4913367a7215d7890f8a5b7.exe N/A
Key created \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\ms-settings C:\Users\Admin\AppData\Local\Temp\fdc933b64df0832a1f88f0e19a4cab67fb110d54c4913367a7215d7890f8a5b7.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\ms-settings\shell\open\command\ C:\Users\Admin\AppData\Local\Temp\fdc933b64df0832a1f88f0e19a4cab67fb110d54c4913367a7215d7890f8a5b7.exe N/A
Key deleted \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\ms-settings\shell C:\Users\Admin\AppData\Local\Temp\fdc933b64df0832a1f88f0e19a4cab67fb110d54c4913367a7215d7890f8a5b7.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\fdc933b64df0832a1f88f0e19a4cab67fb110d54c4913367a7215d7890f8a5b7.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1904 wrote to memory of 2980 N/A C:\Users\Admin\AppData\Local\Temp\fdc933b64df0832a1f88f0e19a4cab67fb110d54c4913367a7215d7890f8a5b7.exe C:\Windows\System32\cmd.exe
PID 1904 wrote to memory of 2980 N/A C:\Users\Admin\AppData\Local\Temp\fdc933b64df0832a1f88f0e19a4cab67fb110d54c4913367a7215d7890f8a5b7.exe C:\Windows\System32\cmd.exe
PID 1904 wrote to memory of 2980 N/A C:\Users\Admin\AppData\Local\Temp\fdc933b64df0832a1f88f0e19a4cab67fb110d54c4913367a7215d7890f8a5b7.exe C:\Windows\System32\cmd.exe
PID 1904 wrote to memory of 2560 N/A C:\Users\Admin\AppData\Local\Temp\fdc933b64df0832a1f88f0e19a4cab67fb110d54c4913367a7215d7890f8a5b7.exe C:\Windows\System32\cmd.exe
PID 1904 wrote to memory of 2560 N/A C:\Users\Admin\AppData\Local\Temp\fdc933b64df0832a1f88f0e19a4cab67fb110d54c4913367a7215d7890f8a5b7.exe C:\Windows\System32\cmd.exe
PID 1904 wrote to memory of 2560 N/A C:\Users\Admin\AppData\Local\Temp\fdc933b64df0832a1f88f0e19a4cab67fb110d54c4913367a7215d7890f8a5b7.exe C:\Windows\System32\cmd.exe
PID 2980 wrote to memory of 2736 N/A C:\Windows\System32\cmd.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2980 wrote to memory of 2736 N/A C:\Windows\System32\cmd.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2980 wrote to memory of 2736 N/A C:\Windows\System32\cmd.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2560 wrote to memory of 2856 N/A C:\Windows\System32\cmd.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2560 wrote to memory of 2856 N/A C:\Windows\System32\cmd.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2560 wrote to memory of 2856 N/A C:\Windows\System32\cmd.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2560 wrote to memory of 2608 N/A C:\Windows\System32\cmd.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2560 wrote to memory of 2608 N/A C:\Windows\System32\cmd.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2560 wrote to memory of 2608 N/A C:\Windows\System32\cmd.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2560 wrote to memory of 276 N/A C:\Windows\System32\cmd.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2560 wrote to memory of 276 N/A C:\Windows\System32\cmd.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2560 wrote to memory of 276 N/A C:\Windows\System32\cmd.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2560 wrote to memory of 1568 N/A C:\Windows\System32\cmd.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2560 wrote to memory of 1568 N/A C:\Windows\System32\cmd.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2560 wrote to memory of 1568 N/A C:\Windows\System32\cmd.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2560 wrote to memory of 2680 N/A C:\Windows\System32\cmd.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2560 wrote to memory of 2680 N/A C:\Windows\System32\cmd.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2560 wrote to memory of 2680 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\fdc933b64df0832a1f88f0e19a4cab67fb110d54c4913367a7215d7890f8a5b7.exe

"C:\Users\Admin\AppData\Local\Temp\fdc933b64df0832a1f88f0e19a4cab67fb110d54c4913367a7215d7890f8a5b7.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\fdc933b64df0832a1f88f0e19a4cab67fb110d54c4913367a7215d7890f8a5b7.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\fdc933b64df0832a1f88f0e19a4cab67fb110d54c4913367a7215d7890f8a5b7.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
IT 185.196.8.223:7777 tcp
IT 185.196.8.223:7777 tcp

Files

memory/1904-0-0x000007FEF52F3000-0x000007FEF52F4000-memory.dmp

memory/1904-1-0x0000000000C50000-0x0000000000CBC000-memory.dmp

memory/1904-2-0x000007FEF52F0000-0x000007FEF5CDC000-memory.dmp

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

MD5 7cedbe448585e24df571f62dad6af14e
SHA1 b4fbb0810daa982975c72b2962086a7ce8870f84
SHA256 990495ff8e54a2865c814770ed0313879fa08db7388f245273490e71f2be35f0
SHA512 89c9f203e193a66b13936207fb47d2587e3f9b223c987801e720d014131fe03c340b698761bee9a53db3be8ffb8a1858eea5816f9a1bedb7e5320c450532e23f

memory/2856-18-0x0000000001F40000-0x0000000001F48000-memory.dmp

memory/2608-17-0x000000001B6D0000-0x000000001B9B2000-memory.dmp

\??\PIPE\srvsvc

MD5 d41d8cd98f00b204e9800998ecf8427e
SHA1 da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256 e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512 cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

memory/1568-30-0x000000001B6E0000-0x000000001B9C2000-memory.dmp

memory/1568-31-0x0000000001E10000-0x0000000001E18000-memory.dmp

memory/1904-38-0x000007FEF52F3000-0x000007FEF52F4000-memory.dmp

memory/1904-39-0x000007FEF52F0000-0x000007FEF5CDC000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-29 01:58

Reported

2024-06-29 02:00

Platform

win10v2004-20240508-en

Max time kernel

149s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\fdc933b64df0832a1f88f0e19a4cab67fb110d54c4913367a7215d7890f8a5b7.exe"

Signatures

AsyncRat

rat asyncrat

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000_Classes\ms-settings\shell\open\command C:\Users\Admin\AppData\Local\Temp\fdc933b64df0832a1f88f0e19a4cab67fb110d54c4913367a7215d7890f8a5b7.exe N/A
Key created \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000_Classes\ms-settings C:\Users\Admin\AppData\Local\Temp\fdc933b64df0832a1f88f0e19a4cab67fb110d54c4913367a7215d7890f8a5b7.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\fdc933b64df0832a1f88f0e19a4cab67fb110d54c4913367a7215d7890f8a5b7.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\fdc933b64df0832a1f88f0e19a4cab67fb110d54c4913367a7215d7890f8a5b7.exe N/A
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\fdc933b64df0832a1f88f0e19a4cab67fb110d54c4913367a7215d7890f8a5b7.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\fdc933b64df0832a1f88f0e19a4cab67fb110d54c4913367a7215d7890f8a5b7.exe

"C:\Users\Admin\AppData\Local\Temp\fdc933b64df0832a1f88f0e19a4cab67fb110d54c4913367a7215d7890f8a5b7.exe"

Network

Files

memory/744-0-0x0000000000AD0000-0x0000000000B3C000-memory.dmp

memory/744-1-0x00007FFA4C3A3000-0x00007FFA4C3A5000-memory.dmp

memory/744-2-0x00007FFA4C3A0000-0x00007FFA4CE61000-memory.dmp

memory/744-3-0x00007FFA4C3A0000-0x00007FFA4CE61000-memory.dmp