asyncrat | 85d9a7d75ece0120c82dd2980532c1c4eb4e5a76e58a228aeec21aebc307a100

Analysis

max time kernel
59s
max time network
70s
platform
windows10-2004_x64
resource
win10v2004-20250314-en
resource tags

arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
submitted
29/03/2025, 19:18

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General

Target

85d9a7d75ece0120c82dd2980532c1c4eb4e5a76e58a228aeec21aebc307a100.exe
Size

262KB
MD5

bb3d025def36b30d2fb3f442995fba03
SHA1

6c19a62c2823afce16fd56c9f7ca3fc34c04d49b
SHA256

85d9a7d75ece0120c82dd2980532c1c4eb4e5a76e58a228aeec21aebc307a100
SHA512

22322032c27e91970b4907cb2d14d889dffdc95f9914788a4f312518bb9b3172eb70bbbd8a32879b28d6fbe24ca721c8424c0c0dac3e247f2424ef318ab789e1
SSDEEP

3072:WdvzDqxs8ORikgogWfiuRXd3YmSffdTKXNXANewGBvskX1pWA/eX:WFzDqa86hV6uRRqX1evPlwAw

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
behavioral2/memory/4804-24-0x0000000000400000-0x0000000000430000-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-1-5-21-3342763580-2723508992-2885672917-1000\Control Panel\International\Geo\Nation	85d9a7d75ece0120c82dd2980532c1c4eb4e5a76e58a228aeec21aebc307a100.exe

Executes dropped EXE 2 IoCs

pid	Process
4644	HiPatchService.exe
2044	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-1-5-21-3342763580-2723508992-2885672917-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HiPatch = "C:\\Users\\Admin\\AppData\\Roaming\\HiPatch\\HiPatchService.exe"	85d9a7d75ece0120c82dd2980532c1c4eb4e5a76e58a228aeec21aebc307a100.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4644 set thread context of 4804	4644	HiPatchService.exe	97
PID 2044 set thread context of 4880	2044	HiPatchService.exe	98

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 7 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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	85d9a7d75ece0120c82dd2980532c1c4eb4e5a76e58a228aeec21aebc307a100.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	HiPatchService.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	HiPatchService.exe

Checks processor information in registry 2 TTPs 4 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
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
4768	timeout.exe

Suspicious behavior: EnumeratesProcesses 50 IoCs

pid	Process
4804	RegAsm.exe
4804	RegAsm.exe
4804	RegAsm.exe
4804	RegAsm.exe
4804	RegAsm.exe
4804	RegAsm.exe
4880	RegAsm.exe
4880	RegAsm.exe
4880	RegAsm.exe
4880	RegAsm.exe
4880	RegAsm.exe
4880	RegAsm.exe
4804	RegAsm.exe
4880	RegAsm.exe
4804	RegAsm.exe
4880	RegAsm.exe
4880	RegAsm.exe
4804	RegAsm.exe
4804	RegAsm.exe
4880	RegAsm.exe
4804	RegAsm.exe
4804	RegAsm.exe
4880	RegAsm.exe
4880	RegAsm.exe
4804	RegAsm.exe
4804	RegAsm.exe
4880	RegAsm.exe
4880	RegAsm.exe
4880	RegAsm.exe
4804	RegAsm.exe
4880	RegAsm.exe
4804	RegAsm.exe
4804	RegAsm.exe
4804	RegAsm.exe
4880	RegAsm.exe
4804	RegAsm.exe
4880	RegAsm.exe
4804	RegAsm.exe
4880	RegAsm.exe
4804	RegAsm.exe
4880	RegAsm.exe
4804	RegAsm.exe
4880	RegAsm.exe
4804	RegAsm.exe
4880	RegAsm.exe
4804	RegAsm.exe
4880	RegAsm.exe
4804	RegAsm.exe
4880	RegAsm.exe
4880	RegAsm.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 4724 wrote to memory of 4644	4724	cmd.exe	92
PID 4724 wrote to memory of 4644	4724	cmd.exe	92
PID 4724 wrote to memory of 4644	4724	cmd.exe	92
PID 2452 wrote to memory of 2044	2452	85d9a7d75ece0120c82dd2980532c1c4eb4e5a76e58a228aeec21aebc307a100.exe	93
PID 2452 wrote to memory of 2044	2452	85d9a7d75ece0120c82dd2980532c1c4eb4e5a76e58a228aeec21aebc307a100.exe	93
PID 2452 wrote to memory of 2044	2452	85d9a7d75ece0120c82dd2980532c1c4eb4e5a76e58a228aeec21aebc307a100.exe	93
PID 2452 wrote to memory of 1032	2452	85d9a7d75ece0120c82dd2980532c1c4eb4e5a76e58a228aeec21aebc307a100.exe	94
PID 2452 wrote to memory of 1032	2452	85d9a7d75ece0120c82dd2980532c1c4eb4e5a76e58a228aeec21aebc307a100.exe	94
PID 2452 wrote to memory of 1032	2452	85d9a7d75ece0120c82dd2980532c1c4eb4e5a76e58a228aeec21aebc307a100.exe	94
PID 1032 wrote to memory of 4768	1032	cmd.exe	96
PID 1032 wrote to memory of 4768	1032	cmd.exe	96
PID 1032 wrote to memory of 4768	1032	cmd.exe	96
PID 4644 wrote to memory of 4804	4644	HiPatchService.exe	97
PID 4644 wrote to memory of 4804	4644	HiPatchService.exe	97
PID 4644 wrote to memory of 4804	4644	HiPatchService.exe	97
PID 4644 wrote to memory of 4804	4644	HiPatchService.exe	97
PID 4644 wrote to memory of 4804	4644	HiPatchService.exe	97
PID 4644 wrote to memory of 4804	4644	HiPatchService.exe	97
PID 4644 wrote to memory of 4804	4644	HiPatchService.exe	97
PID 4644 wrote to memory of 4804	4644	HiPatchService.exe	97
PID 2044 wrote to memory of 4880	2044	HiPatchService.exe	98
PID 2044 wrote to memory of 4880	2044	HiPatchService.exe	98
PID 2044 wrote to memory of 4880	2044	HiPatchService.exe	98
PID 2044 wrote to memory of 4880	2044	HiPatchService.exe	98
PID 2044 wrote to memory of 4880	2044	HiPatchService.exe	98
PID 2044 wrote to memory of 4880	2044	HiPatchService.exe	98
PID 2044 wrote to memory of 4880	2044	HiPatchService.exe	98
PID 2044 wrote to memory of 4880	2044	HiPatchService.exe	98

C:\Users\Admin\AppData\Local\Temp\85d9a7d75ece0120c82dd2980532c1c4eb4e5a76e58a228aeec21aebc307a100.exe
"C:\Users\Admin\AppData\Local\Temp\85d9a7d75ece0120c82dd2980532c1c4eb4e5a76e58a228aeec21aebc307a100.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2452
- 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:2044
- - 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:4880
- 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:1032
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 180
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:4768

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Roaming\HiPatch\HiPatchService.exe
1⤵
- Suspicious use of WriteProcessMemory
PID:4724
- 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:4644
- - 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:4804

C:\Windows\system32\wbem\WmiApSrv.exe
C:\Windows\system32\wbem\WmiApSrv.exe
1⤵
PID:3792

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\Local\Microsoft\CLR_v4.0_32\UsageLogs\HiPatchService.exe.log

Filesize
1KB

MD5
7ebe314bf617dc3e48b995a6c352740c

SHA1
538f643b7b30f9231a3035c448607f767527a870

SHA256
48178f884b8a4dd96e330b210b0530667d9473a7629fc6b4ad12b614bf438ee8

SHA512
0ba9d8f4244c15285e254d27b4bff7c49344ff845c48bc0bf0d8563072fab4d6f7a6abe6b6742e8375a08e9a3b3e5d5dc4937ab428dbe2dd8e62892fda04507e

Download Submit
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
263KB

MD5
4b3c9c825fe3d43945833de7717cc942

SHA1
18fc4b677274cc6391fe1d65eafc377d4eb251a3

SHA256
b26096037501ef2820a92776e0e775ebb0c1a4b09aeb78e614e815604fe5921c

SHA512
eea610377bee310920f8fde68ccab4ae2798ccd315a80cf8e4282322674a3751690cb8190950ac4e0573d2eacd27942504d33d1be1091ee45b03388362caa274

Download Submit
memory/2044-29-0x00000000747D0000-0x0000000074F80000-memory.dmp

Filesize
7.7MB

Download
memory/2044-21-0x00000000747D0000-0x0000000074F80000-memory.dmp

Filesize
7.7MB

Download
memory/2452-5-0x00000000747D0000-0x0000000074F80000-memory.dmp

Filesize
7.7MB

Download
memory/2452-2-0x0000000005640000-0x0000000005BE4000-memory.dmp

Filesize
5.6MB

Download
memory/2452-4-0x0000000005070000-0x000000000507A000-memory.dmp

Filesize
40KB

Download
memory/2452-13-0x00000000747DE000-0x00000000747DF000-memory.dmp

Filesize
4KB

Download
memory/2452-6-0x0000000005060000-0x000000000506A000-memory.dmp

Filesize
40KB

Download
memory/2452-1-0x0000000000640000-0x0000000000686000-memory.dmp

Filesize
280KB

Download
memory/2452-16-0x00000000747D0000-0x0000000074F80000-memory.dmp

Filesize
7.7MB

Download
memory/2452-0-0x00000000747DE000-0x00000000747DF000-memory.dmp

Filesize
4KB

Download
memory/2452-22-0x00000000747D0000-0x0000000074F80000-memory.dmp

Filesize
7.7MB

Download
memory/2452-3-0x0000000005090000-0x0000000005122000-memory.dmp

Filesize
584KB

Download
memory/4644-14-0x00000000747D0000-0x0000000074F80000-memory.dmp

Filesize
7.7MB

Download
memory/4644-26-0x00000000747D0000-0x0000000074F80000-memory.dmp

Filesize
7.7MB

Download
memory/4644-15-0x00000000747D0000-0x0000000074F80000-memory.dmp

Filesize
7.7MB

Download
memory/4804-24-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download