asyncrat | c32313a072f56775c172a35dacdea8be69178b0aa3dcc3084b39ad84914d4c7f

Analysis

max time kernel
58s
max time network
50s
platform
windows11-21h2_x64
resource
win11-20260130-en
resource tags

arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
submitted
15/04/2026, 19:52

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General

Target
c32313a072f56775c172a35dacdea8be69178b0aa3dcc3084b39ad84914d4c7f.exe
Size 476KB
Sample260415-yllpfsbx8z
SHA256 c32313a072f56775c172a35dacdea8be69178b0aa3dcc3084b39ad84914d4c7f
MD5 b008742640ba9c46e6b47ba1254377c2
SHA1 30d9d7b3ac73067294161087716a12479829f2ec
SHA512 f621900495a5f3a56957b433f9ece227aec5eed9ad6490fde3d9f7a7c384f2f39a66567c87b2f6194fa9468d379a7c43ffd8d39d0757e40c438bab031216ed98
SSDEEP 12288:4OYdBNF3QkHIEkmechBNw7JY6er5+nZoX:qJHIznchBIYi8
TLSH
T163A4CF1EB76164E6E8329DB01C3191516A257CA329604F277AD41B0E2C370F79DBAB3F
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

default discovery asyncrat persistence rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

31.210.20.231:200

Mutex

STANDART

Attributes

delay
3
install
false
install_file
RuntimeBroker.exe
install_folder
%AppData%

aes.plain

Signatures

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

Executes dropped EXE 1 IoCs

pid	Process
3148	mshost.exe.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3847269522-1618051987-1942096715-1000\Software\Microsoft\Windows\CurrentVersion\Run\Winversion = "C:\\Users\\Admin\\AppData\\Roaming\\Windows\\mshost.exe.exe"	c32313a072f56775c172a35dacdea8be69178b0aa3dcc3084b39ad84914d4c7f.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3436 set thread context of 2188	3436	c32313a072f56775c172a35dacdea8be69178b0aa3dcc3084b39ad84914d4c7f.exe	80

System Location Discovery: System Language Discovery 1 TTPs 3 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	c32313a072f56775c172a35dacdea8be69178b0aa3dcc3084b39ad84914d4c7f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mshost.exe.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3436	c32313a072f56775c172a35dacdea8be69178b0aa3dcc3084b39ad84914d4c7f.exe
3148	mshost.exe.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 3436 wrote to memory of 2188	3436	c32313a072f56775c172a35dacdea8be69178b0aa3dcc3084b39ad84914d4c7f.exe	80
PID 3436 wrote to memory of 2188	3436	c32313a072f56775c172a35dacdea8be69178b0aa3dcc3084b39ad84914d4c7f.exe	80
PID 3436 wrote to memory of 2188	3436	c32313a072f56775c172a35dacdea8be69178b0aa3dcc3084b39ad84914d4c7f.exe	80
PID 3436 wrote to memory of 2188	3436	c32313a072f56775c172a35dacdea8be69178b0aa3dcc3084b39ad84914d4c7f.exe	80
PID 3436 wrote to memory of 2188	3436	c32313a072f56775c172a35dacdea8be69178b0aa3dcc3084b39ad84914d4c7f.exe	80

C:\Users\Admin\AppData\Local\Temp\c32313a072f56775c172a35dacdea8be69178b0aa3dcc3084b39ad84914d4c7f.exe
"C:\Users\Admin\AppData\Local\Temp\c32313a072f56775c172a35dacdea8be69178b0aa3dcc3084b39ad84914d4c7f.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3436
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2188

C:\Users\Admin\AppData\Roaming\Windows\mshost.exe.exe
C:\Users\Admin\AppData\Roaming\Windows\mshost.exe.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
PID:3148

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

mshost.exe.exe

Path C:\Users\Admin\AppData\Roaming\Windows\mshost.exe.exe
Size 476KB
SHA256 c32313a072f56775c172a35dacdea8be69178b0aa3dcc3084b39ad84914d4c7f
MD5 b008742640ba9c46e6b47ba1254377c2
SHA1 30d9d7b3ac73067294161087716a12479829f2ec
SHA512 f621900495a5f3a56957b433f9ece227aec5eed9ad6490fde3d9f7a7c384f2f39a66567c87b2f6194fa9468d379a7c43ffd8d39d0757e40c438bab031216ed98
SSDEEP 12288:4OYdBNF3QkHIEkmechBNw7JY6er5+nZoX:qJHIznchBIYi8
TLSH
T163A4CF1EB76164E6E8329DB01C3191516A257CA329604F277AD41B0E2C370F79DBAB3F
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/2188-4-0x0000000000400000-0x0000000000412000-memory.dmp

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memory/2188-9-0x0000000005D40000-0x0000000005D50000-memory.dmp

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memory/2188-10-0x0000000005B60000-0x0000000005B8F000-memory.dmp

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memory/2188-12-0x0000000005C90000-0x0000000005C9E000-memory.dmp

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memory/2188-11-0x0000000005B90000-0x0000000005C8E000-memory.dmp

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memory/2188-13-0x0000000005D40000-0x0000000005D50000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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