asyncrat | f08d555b265bc840ef4d7904f37de7886b276d3b2f85180bb63b0e29445e02b1

Analysis

max time kernel
149s
max time network
154s
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, 06:16

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General

Target

c94fcbd3ca89723863a372a980b7dfcd5ee5ef7cd41042f6aaefd68e51f39ba9.exe
Size

273KB
MD5

fcff087eb0f783dd0aa6d6ade2fd9c2b
SHA1

0b041ce2961a1e1dccbeb734a008f22f391600cc
SHA256

c94fcbd3ca89723863a372a980b7dfcd5ee5ef7cd41042f6aaefd68e51f39ba9
SHA512

63a4d46a1565b86d7be5838c627e03d999f2cd35cabbed960b18ff4791a9410ea0fb8af1703a4a79703046ef86da6a9e765ad52676e4df506279d1a4351435d8
SSDEEP

3072:WdvzDqxs8ORikgogWfiuRXd3YmSffdTKXNXANewGBvskX1pWA/s8sdTP:WFzDqa86hV6uRRqX1evPlwAEdT

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
behavioral32/memory/4912-29-0x0000000000400000-0x0000000000430000-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-1-5-21-3218366390-1258052702-4267193707-1000\Control Panel\International\Geo\Nation	c94fcbd3ca89723863a372a980b7dfcd5ee5ef7cd41042f6aaefd68e51f39ba9.exe

Executes dropped EXE 1 IoCs

pid	Process
540	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-1-5-21-3218366390-1258052702-4267193707-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HiPatch = "C:\\Users\\Admin\\AppData\\Roaming\\HiPatch\\HiPatchService.exe"	c94fcbd3ca89723863a372a980b7dfcd5ee5ef7cd41042f6aaefd68e51f39ba9.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 540 set thread context of 4912	540	HiPatchService.exe	100

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	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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c94fcbd3ca89723863a372a980b7dfcd5ee5ef7cd41042f6aaefd68e51f39ba9.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
2392	timeout.exe

Suspicious behavior: EnumeratesProcesses 25 IoCs

pid	Process
4912	RegAsm.exe
4912	RegAsm.exe
4912	RegAsm.exe
4912	RegAsm.exe
4912	RegAsm.exe
4912	RegAsm.exe
4912	RegAsm.exe
4912	RegAsm.exe
4912	RegAsm.exe
4912	RegAsm.exe
4912	RegAsm.exe
4912	RegAsm.exe
4912	RegAsm.exe
4912	RegAsm.exe
4912	RegAsm.exe
4912	RegAsm.exe
4912	RegAsm.exe
4912	RegAsm.exe
4912	RegAsm.exe
4912	RegAsm.exe
4912	RegAsm.exe
4912	RegAsm.exe
4912	RegAsm.exe
4912	RegAsm.exe
4912	RegAsm.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 4844 wrote to memory of 540	4844	c94fcbd3ca89723863a372a980b7dfcd5ee5ef7cd41042f6aaefd68e51f39ba9.exe	95
PID 4844 wrote to memory of 540	4844	c94fcbd3ca89723863a372a980b7dfcd5ee5ef7cd41042f6aaefd68e51f39ba9.exe	95
PID 4844 wrote to memory of 540	4844	c94fcbd3ca89723863a372a980b7dfcd5ee5ef7cd41042f6aaefd68e51f39ba9.exe	95
PID 4844 wrote to memory of 2896	4844	c94fcbd3ca89723863a372a980b7dfcd5ee5ef7cd41042f6aaefd68e51f39ba9.exe	96
PID 4844 wrote to memory of 2896	4844	c94fcbd3ca89723863a372a980b7dfcd5ee5ef7cd41042f6aaefd68e51f39ba9.exe	96
PID 4844 wrote to memory of 2896	4844	c94fcbd3ca89723863a372a980b7dfcd5ee5ef7cd41042f6aaefd68e51f39ba9.exe	96
PID 2896 wrote to memory of 2392	2896	cmd.exe	98
PID 2896 wrote to memory of 2392	2896	cmd.exe	98
PID 2896 wrote to memory of 2392	2896	cmd.exe	98
PID 540 wrote to memory of 4912	540	HiPatchService.exe	100
PID 540 wrote to memory of 4912	540	HiPatchService.exe	100
PID 540 wrote to memory of 4912	540	HiPatchService.exe	100
PID 540 wrote to memory of 4912	540	HiPatchService.exe	100
PID 540 wrote to memory of 4912	540	HiPatchService.exe	100
PID 540 wrote to memory of 4912	540	HiPatchService.exe	100
PID 540 wrote to memory of 4912	540	HiPatchService.exe	100
PID 540 wrote to memory of 4912	540	HiPatchService.exe	100

C:\Users\Admin\AppData\Local\Temp\c94fcbd3ca89723863a372a980b7dfcd5ee5ef7cd41042f6aaefd68e51f39ba9.exe
"C:\Users\Admin\AppData\Local\Temp\c94fcbd3ca89723863a372a980b7dfcd5ee5ef7cd41042f6aaefd68e51f39ba9.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4844
- 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:540
- - 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:4912
- 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:2896
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 180
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2392

C:\Windows\system32\wbem\WmiApSrv.exe
C:\Windows\system32\wbem\WmiApSrv.exe
1⤵
PID:1804

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
273KB

MD5
0c552e0741b9200999432cd045d9ddb8

SHA1
36c240cca21de76071f4e47d70d8bb8fa928419e

SHA256
af34b53dfe5feb9486ea21c6039acdeeeb4e6c2f064fef04c6dd6f3caecc2ee1

SHA512
2d1a4e902c1c026664512c15cc56467cc6b052865ad4127522ae48aefa065ef2568f8fb4f7efefdbd4e72db17914237b22cd854cfb6b852321a6a36ac2d21044

Download Submit
memory/540-31-0x0000000074400000-0x0000000074BB0000-memory.dmp

Filesize
7.7MB

Download
memory/540-28-0x0000000074400000-0x0000000074BB0000-memory.dmp

Filesize
7.7MB

Download
memory/540-26-0x0000000074400000-0x0000000074BB0000-memory.dmp

Filesize
7.7MB

Download
memory/4844-6-0x0000000074400000-0x0000000074BB0000-memory.dmp

Filesize
7.7MB

Download
memory/4844-0-0x000000007440E000-0x000000007440F000-memory.dmp

Filesize
4KB

Download
memory/4844-12-0x000000007440E000-0x000000007440F000-memory.dmp

Filesize
4KB

Download
memory/4844-5-0x0000000005460000-0x000000000546A000-memory.dmp

Filesize
40KB

Download
memory/4844-25-0x0000000074400000-0x0000000074BB0000-memory.dmp

Filesize
7.7MB

Download
memory/4844-4-0x0000000005470000-0x000000000547A000-memory.dmp

Filesize
40KB

Download
memory/4844-3-0x00000000054A0000-0x0000000005532000-memory.dmp

Filesize
584KB

Download
memory/4844-2-0x0000000005A50000-0x0000000005FF4000-memory.dmp

Filesize
5.6MB

Download
memory/4844-1-0x0000000000A40000-0x0000000000A86000-memory.dmp

Filesize
280KB

Download
memory/4912-29-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download