Malware Analysis Report

2024-09-22 06:59

Sample ID 240621-m9v29a1djk
Target Dllhost.exe
SHA256 e32914230692a86ded5fb3da76281331b1453e44b731ad92ed5c49b5ca723946
Tags
rat default asyncrat
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

e32914230692a86ded5fb3da76281331b1453e44b731ad92ed5c49b5ca723946

Threat Level: Known bad

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

Malicious Activity Summary

rat default asyncrat

Async RAT payload

Asyncrat family

AsyncRat

Async RAT payload

Executes dropped EXE

Unsigned PE

Enumerates physical storage devices

Delays execution with timeout.exe

Suspicious use of WriteProcessMemory

Scheduled Task/Job: Scheduled Task

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK Matrix V13

Analysis: static1

Detonation Overview

Reported

2024-06-21 11:10

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

2024-06-21 11:10

Reported

2024-06-21 11:13

Platform

win10-20240404-en

Max time kernel

147s

Max time network

149s

Command Line

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

Signatures

AsyncRat

rat asyncrat

Async RAT payload

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

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\SolaraHoster.exe N/A

Enumerates physical storage devices

Delays execution with timeout.exe

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

Scheduled Task/Job: Scheduled Task

persistence execution
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\schtasks.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\SolaraHoster.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\SolaraHoster.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4452 wrote to memory of 4608 N/A C:\Users\Admin\AppData\Local\Temp\Dllhost.exe C:\Windows\SysWOW64\cmd.exe
PID 4452 wrote to memory of 4608 N/A C:\Users\Admin\AppData\Local\Temp\Dllhost.exe C:\Windows\SysWOW64\cmd.exe
PID 4452 wrote to memory of 4608 N/A C:\Users\Admin\AppData\Local\Temp\Dllhost.exe C:\Windows\SysWOW64\cmd.exe
PID 4452 wrote to memory of 192 N/A C:\Users\Admin\AppData\Local\Temp\Dllhost.exe C:\Windows\SysWOW64\cmd.exe
PID 4452 wrote to memory of 192 N/A C:\Users\Admin\AppData\Local\Temp\Dllhost.exe C:\Windows\SysWOW64\cmd.exe
PID 4452 wrote to memory of 192 N/A C:\Users\Admin\AppData\Local\Temp\Dllhost.exe C:\Windows\SysWOW64\cmd.exe
PID 192 wrote to memory of 3692 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 192 wrote to memory of 3692 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 192 wrote to memory of 3692 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 4608 wrote to memory of 4356 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\schtasks.exe
PID 4608 wrote to memory of 4356 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\schtasks.exe
PID 4608 wrote to memory of 4356 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\schtasks.exe
PID 192 wrote to memory of 3856 N/A C:\Windows\SysWOW64\cmd.exe C:\Users\Admin\AppData\Roaming\SolaraHoster.exe
PID 192 wrote to memory of 3856 N/A C:\Windows\SysWOW64\cmd.exe C:\Users\Admin\AppData\Roaming\SolaraHoster.exe
PID 192 wrote to memory of 3856 N/A C:\Windows\SysWOW64\cmd.exe C:\Users\Admin\AppData\Roaming\SolaraHoster.exe

Processes

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

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

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "SolaraHoster" /tr '"C:\Users\Admin\AppData\Roaming\SolaraHoster.exe"' & exit

C:\Windows\SysWOW64\cmd.exe

C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp854D.tmp.bat""

C:\Windows\SysWOW64\timeout.exe

timeout 3

C:\Windows\SysWOW64\schtasks.exe

schtasks /create /f /sc onlogon /rl highest /tn "SolaraHoster" /tr '"C:\Users\Admin\AppData\Roaming\SolaraHoster.exe"'

C:\Users\Admin\AppData\Roaming\SolaraHoster.exe

"C:\Users\Admin\AppData\Roaming\SolaraHoster.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 carolina-reverse.gl.at.ply.gg udp
US 147.185.221.20:34609 carolina-reverse.gl.at.ply.gg tcp
US 8.8.8.8:53 20.221.185.147.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 147.185.221.20:34609 carolina-reverse.gl.at.ply.gg tcp
US 147.185.221.20:34609 carolina-reverse.gl.at.ply.gg tcp
US 147.185.221.20:34609 carolina-reverse.gl.at.ply.gg tcp
US 147.185.221.20:34609 carolina-reverse.gl.at.ply.gg tcp
US 147.185.221.20:34609 carolina-reverse.gl.at.ply.gg tcp
US 147.185.221.20:34609 carolina-reverse.gl.at.ply.gg tcp
US 147.185.221.20:34609 carolina-reverse.gl.at.ply.gg tcp
US 147.185.221.20:34609 carolina-reverse.gl.at.ply.gg tcp
US 147.185.221.20:34609 carolina-reverse.gl.at.ply.gg tcp
US 147.185.221.20:34609 carolina-reverse.gl.at.ply.gg tcp
US 147.185.221.20:34609 carolina-reverse.gl.at.ply.gg tcp
US 147.185.221.20:34609 carolina-reverse.gl.at.ply.gg tcp
US 147.185.221.20:34609 carolina-reverse.gl.at.ply.gg tcp
US 147.185.221.20:34609 carolina-reverse.gl.at.ply.gg tcp
US 147.185.221.20:34609 carolina-reverse.gl.at.ply.gg tcp
US 8.8.8.8:53 28.73.42.20.in-addr.arpa udp
US 147.185.221.20:34609 carolina-reverse.gl.at.ply.gg tcp
US 147.185.221.20:34609 carolina-reverse.gl.at.ply.gg tcp
US 147.185.221.20:34609 carolina-reverse.gl.at.ply.gg tcp

Files

memory/4452-0-0x000000007343E000-0x000000007343F000-memory.dmp

memory/4452-1-0x0000000000C70000-0x0000000000C82000-memory.dmp

memory/4452-2-0x0000000073430000-0x0000000073B1E000-memory.dmp

memory/4452-3-0x0000000005460000-0x00000000054C6000-memory.dmp

memory/4452-4-0x0000000005940000-0x00000000059DC000-memory.dmp

memory/4452-9-0x0000000073430000-0x0000000073B1E000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\tmp854D.tmp.bat

MD5 a74f0945740c700d2e973cb492d6ffc3
SHA1 60a5859e35acb1ebd3118bcdcd9ce0b7c4ee365a
SHA256 a879d79e2c6b55e1eeee0c95f657a0c0ed6438cb0eec95e12d863cde8c106d72
SHA512 fff86a9d572a829cec0ebc5ccfa62dc05c1c8437daa102aaf8ce7f2a29ec48c750b83b856390cd6788edf29eb344b470895e2d803ad5bc4e89d5acd3e0ee153e

C:\Users\Admin\AppData\Roaming\SolaraHoster.exe

MD5 e15052ab153401b16594f794a424d048
SHA1 31cab904e1f3bce48ce9bac3d794771943e50588
SHA256 e32914230692a86ded5fb3da76281331b1453e44b731ad92ed5c49b5ca723946
SHA512 12d89b33423167b5ad6aef5a1feae65b3d47abb2999a6bf3bb503b96f74b58db9adb2855cc161d58cb068851e69ff030c47327968be69ab68126ec9c13d377aa

memory/3856-16-0x0000000006330000-0x000000000682E000-memory.dmp