asyncrat | 1364e3f0b350e7b83a82e9d75745a14b1d88ee737583dcf3450ec719fadf6ad8

Analysis

max time kernel
146s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20250314-en
resource tags

arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
submitted
22/03/2025, 06:25

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General

Target

0973173c13d86b9430c7f43bb76a0496.exe
Size

272KB
MD5

0973173c13d86b9430c7f43bb76a0496
SHA1

b494afc415507920bad5d3e574786f607fcfb8a3
SHA256

c4dfa221f0192780a5b185255a59384cda6aee2de0ce13498edf85e92342c39b
SHA512

44f82582e5d57582f0fcb9be1bdcee7a623f89715b6f6ba4b3df9b1824b97d611866446da368398b62134391f3c63f168c0371e92732af2ae71cd4a83ef9bbf9
SSDEEP

3072:WdvzDqxs8ORikgogWfiuRXd3YmSffdTKXNXANewGBvskX1pWA/s8sdTt:WFzDqa86hV6uRRqX1evPlwAEdJ

Score

10^/10

asyncrat discovery persistence rat

Malware Config

Extracted

Family

asyncrat

Version

0.4.9G

corporation.warzonedns.com:9341

Mutex

480-28105c055659

Attributes

delay
0
install
false
install_folder
%AppData%

aes.plain

Signatures

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

Contains code to disable Windows Defender 1 IoCs

A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

resource	yara_rule
behavioral6/memory/5452-29-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1062200478-553497403-3857448183-1000\Control Panel\International\Geo\Nation	0973173c13d86b9430c7f43bb76a0496.exe

Executes dropped EXE 1 IoCs

pid	Process
4840	HiPatchService.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-1-5-21-1062200478-553497403-3857448183-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HiPatch = "C:\\Users\\Admin\\AppData\\Roaming\\HiPatch\\HiPatchService.exe"	0973173c13d86b9430c7f43bb76a0496.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4840 set thread context of 5452	4840	HiPatchService.exe	99

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 5 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	0973173c13d86b9430c7f43bb76a0496.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	HiPatchService.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\Registry\Machine\HARDWARE\DESCRIPTION\System\CentralProcessor\0	RegAsm.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	RegAsm.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
4996	timeout.exe

Suspicious behavior: EnumeratesProcesses 25 IoCs

pid	Process
5452	RegAsm.exe
5452	RegAsm.exe
5452	RegAsm.exe
5452	RegAsm.exe
5452	RegAsm.exe
5452	RegAsm.exe
5452	RegAsm.exe
5452	RegAsm.exe
5452	RegAsm.exe
5452	RegAsm.exe
5452	RegAsm.exe
5452	RegAsm.exe
5452	RegAsm.exe
5452	RegAsm.exe
5452	RegAsm.exe
5452	RegAsm.exe
5452	RegAsm.exe
5452	RegAsm.exe
5452	RegAsm.exe
5452	RegAsm.exe
5452	RegAsm.exe
5452	RegAsm.exe
5452	RegAsm.exe
5452	RegAsm.exe
5452	RegAsm.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 5576 wrote to memory of 4840	5576	0973173c13d86b9430c7f43bb76a0496.exe	94
PID 5576 wrote to memory of 4840	5576	0973173c13d86b9430c7f43bb76a0496.exe	94
PID 5576 wrote to memory of 4840	5576	0973173c13d86b9430c7f43bb76a0496.exe	94
PID 5576 wrote to memory of 4980	5576	0973173c13d86b9430c7f43bb76a0496.exe	95
PID 5576 wrote to memory of 4980	5576	0973173c13d86b9430c7f43bb76a0496.exe	95
PID 5576 wrote to memory of 4980	5576	0973173c13d86b9430c7f43bb76a0496.exe	95
PID 4980 wrote to memory of 4996	4980	cmd.exe	97
PID 4980 wrote to memory of 4996	4980	cmd.exe	97
PID 4980 wrote to memory of 4996	4980	cmd.exe	97
PID 4840 wrote to memory of 5452	4840	HiPatchService.exe	99
PID 4840 wrote to memory of 5452	4840	HiPatchService.exe	99
PID 4840 wrote to memory of 5452	4840	HiPatchService.exe	99
PID 4840 wrote to memory of 5452	4840	HiPatchService.exe	99
PID 4840 wrote to memory of 5452	4840	HiPatchService.exe	99
PID 4840 wrote to memory of 5452	4840	HiPatchService.exe	99
PID 4840 wrote to memory of 5452	4840	HiPatchService.exe	99
PID 4840 wrote to memory of 5452	4840	HiPatchService.exe	99

C:\Users\Admin\AppData\Local\Temp\0973173c13d86b9430c7f43bb76a0496.exe
"C:\Users\Admin\AppData\Local\Temp\0973173c13d86b9430c7f43bb76a0496.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5576
- C:\Users\Admin\AppData\Roaming\HiPatch\HiPatchService.exe
  "C:\Users\Admin\AppData\Roaming\HiPatch\HiPatchService.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4840
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Checks processor information in registry
    - Suspicious behavior: EnumeratesProcesses
    PID:5452
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\HiPatch\HiPatchService.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4980
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 180
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:4996

C:\Windows\system32\wbem\WmiApSrv.exe
C:\Windows\system32\wbem\WmiApSrv.exe
1⤵
PID:1460

Network

MITRE ATT&CK Enterprise v15

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

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\HiPatch\HiPatchService.bat

Filesize
213B

MD5
0955cb4b691d44b37f8b6fad48a33b8e

SHA1
9dae759ae014cc124ab6eed7c8035788c124ae4a

SHA256
9092dbb1ca1767d1966b7f79349dd95a802a68248251bf070c0f1d74d5681d71

SHA512
08b868a028c1e8d29ed643416850df16f58d44668f9193b46bd3934965e5617a0a4015fc52815c5456023dbde01023450d295b76d936a936f26b602e764b0235

Download Submit
C:\Users\Admin\AppData\Roaming\HiPatch\HiPatchService.exe

Filesize
272KB

MD5
010e27bba4c8b12e31a7107dff6a9ec9

SHA1
f9033d3c9f0c0a3089a38232f40bde92b87f6ad3

SHA256
b5603bcbb22bcbcb077a36eea13f4f5a2a00703c316a9dcd86eed694082d5b49

SHA512
ea602b8362e1d923bb6682d2233cb5669464dd290ba68192f63655753106a1e46d610328c8fd03eb18d3123f81cb7bf628bcc985be79451cfa3795b267af9598

Download Submit
memory/4840-31-0x0000000074C90000-0x0000000075440000-memory.dmp

Filesize
7.7MB

Download
memory/4840-28-0x0000000074C90000-0x0000000075440000-memory.dmp

Filesize
7.7MB

Download
memory/4840-26-0x0000000074C90000-0x0000000075440000-memory.dmp

Filesize
7.7MB

Download
memory/5452-29-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/5576-6-0x0000000004D20000-0x0000000004D2A000-memory.dmp

Filesize
40KB

Download
memory/5576-12-0x0000000074C9E000-0x0000000074C9F000-memory.dmp

Filesize
4KB

Download
memory/5576-0-0x0000000074C9E000-0x0000000074C9F000-memory.dmp

Filesize
4KB

Download
memory/5576-25-0x0000000074C90000-0x0000000075440000-memory.dmp

Filesize
7.7MB

Download
memory/5576-4-0x0000000004D30000-0x0000000004D3A000-memory.dmp

Filesize
40KB

Download
memory/5576-5-0x0000000074C90000-0x0000000075440000-memory.dmp

Filesize
7.7MB

Download
memory/5576-3-0x0000000004D40000-0x0000000004DD2000-memory.dmp

Filesize
584KB

Download
memory/5576-2-0x0000000005250000-0x00000000057F4000-memory.dmp

Filesize
5.6MB

Download
memory/5576-1-0x00000000002E0000-0x0000000000326000-memory.dmp

Filesize
280KB

Download