asyncrat | 4bcbb8983fe7425976c5a1789deff73fb138e80981f5ebfef1f835bcc6757760

Analysis

max time kernel
148s
max time network
149s
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, 06:18

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General

Target

f628fa20e85aaf1cc562cfd512392d3d12da2ef70adc31068f1e3d7f2b0a4f3b.exe
Size

273KB
MD5

3ef5f71fdec671a56a286ea1866bb640
SHA1

04e90d67cfb7cb470ea9e6d48f4fc765b0ddb472
SHA256

f628fa20e85aaf1cc562cfd512392d3d12da2ef70adc31068f1e3d7f2b0a4f3b
SHA512

5e724aef6ad8258cf23363911fb74780ff9b6cd469c0ba478d72de2d86b295ed63901e89a0a05466b2c9a7925244f6b02aef3ab9d06f325a1301eb3aedd431d2
SSDEEP

3072:WdvzDqxs8ORikgogWfiuRXd3YmSffdTKXNXANewGBvskX1pWA/s8sdT/u:WFzDqa86hV6uRRqX1evPlwAEdS

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
behavioral10/memory/5896-29-0x0000000000400000-0x0000000000430000-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	f628fa20e85aaf1cc562cfd512392d3d12da2ef70adc31068f1e3d7f2b0a4f3b.exe

Executes dropped EXE 1 IoCs

pid	Process
432	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"	f628fa20e85aaf1cc562cfd512392d3d12da2ef70adc31068f1e3d7f2b0a4f3b.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 432 set thread context of 5896	432	HiPatchService.exe	102

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	f628fa20e85aaf1cc562cfd512392d3d12da2ef70adc31068f1e3d7f2b0a4f3b.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
4328	timeout.exe

Suspicious behavior: EnumeratesProcesses 27 IoCs

pid	Process
432	HiPatchService.exe
432	HiPatchService.exe
5896	RegAsm.exe
5896	RegAsm.exe
5896	RegAsm.exe
5896	RegAsm.exe
5896	RegAsm.exe
5896	RegAsm.exe
5896	RegAsm.exe
5896	RegAsm.exe
5896	RegAsm.exe
5896	RegAsm.exe
5896	RegAsm.exe
5896	RegAsm.exe
5896	RegAsm.exe
5896	RegAsm.exe
5896	RegAsm.exe
5896	RegAsm.exe
5896	RegAsm.exe
5896	RegAsm.exe
5896	RegAsm.exe
5896	RegAsm.exe
5896	RegAsm.exe
5896	RegAsm.exe
5896	RegAsm.exe
5896	RegAsm.exe
5896	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	432	HiPatchService.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 2508 wrote to memory of 432	2508	f628fa20e85aaf1cc562cfd512392d3d12da2ef70adc31068f1e3d7f2b0a4f3b.exe	96
PID 2508 wrote to memory of 432	2508	f628fa20e85aaf1cc562cfd512392d3d12da2ef70adc31068f1e3d7f2b0a4f3b.exe	96
PID 2508 wrote to memory of 432	2508	f628fa20e85aaf1cc562cfd512392d3d12da2ef70adc31068f1e3d7f2b0a4f3b.exe	96
PID 2508 wrote to memory of 3648	2508	f628fa20e85aaf1cc562cfd512392d3d12da2ef70adc31068f1e3d7f2b0a4f3b.exe	97
PID 2508 wrote to memory of 3648	2508	f628fa20e85aaf1cc562cfd512392d3d12da2ef70adc31068f1e3d7f2b0a4f3b.exe	97
PID 2508 wrote to memory of 3648	2508	f628fa20e85aaf1cc562cfd512392d3d12da2ef70adc31068f1e3d7f2b0a4f3b.exe	97
PID 3648 wrote to memory of 4328	3648	cmd.exe	99
PID 3648 wrote to memory of 4328	3648	cmd.exe	99
PID 3648 wrote to memory of 4328	3648	cmd.exe	99
PID 432 wrote to memory of 3048	432	HiPatchService.exe	101
PID 432 wrote to memory of 3048	432	HiPatchService.exe	101
PID 432 wrote to memory of 3048	432	HiPatchService.exe	101
PID 432 wrote to memory of 5896	432	HiPatchService.exe	102
PID 432 wrote to memory of 5896	432	HiPatchService.exe	102
PID 432 wrote to memory of 5896	432	HiPatchService.exe	102
PID 432 wrote to memory of 5896	432	HiPatchService.exe	102
PID 432 wrote to memory of 5896	432	HiPatchService.exe	102
PID 432 wrote to memory of 5896	432	HiPatchService.exe	102
PID 432 wrote to memory of 5896	432	HiPatchService.exe	102
PID 432 wrote to memory of 5896	432	HiPatchService.exe	102

C:\Users\Admin\AppData\Local\Temp\f628fa20e85aaf1cc562cfd512392d3d12da2ef70adc31068f1e3d7f2b0a4f3b.exe
"C:\Users\Admin\AppData\Local\Temp\f628fa20e85aaf1cc562cfd512392d3d12da2ef70adc31068f1e3d7f2b0a4f3b.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2508
- 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 behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:432
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
    3⤵
    PID:3048
- - 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:5896
- 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:3648
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 180
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:4328

C:\Windows\system32\wbem\WmiApSrv.exe
C:\Windows\system32\wbem\WmiApSrv.exe
1⤵
PID:4480

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
49d2537d2c4bfced84e6d3273e86924c

SHA1
c6d60ccdbf939838d1f2df034891877cff0bed2c

SHA256
8d11cf490bf62b9f385999effcb9a023e4d1a31b99831267b5d77b17e337fe6c

SHA512
d5b1697bc3791b8ed376bb904fc8d2832c4f2c150ab83796cf83ebed18150d69a51af1ae261336f5864f0ff18ff870e981000dff16a4883646190c2c5f66a99a

Download Submit
memory/432-31-0x0000000074F70000-0x0000000075720000-memory.dmp

Filesize
7.7MB

Download
memory/432-26-0x0000000074F70000-0x0000000075720000-memory.dmp

Filesize
7.7MB

Download
memory/432-28-0x0000000074F70000-0x0000000075720000-memory.dmp

Filesize
7.7MB

Download
memory/2508-6-0x0000000005890000-0x000000000589A000-memory.dmp

Filesize
40KB

Download
memory/2508-0-0x0000000074F7E000-0x0000000074F7F000-memory.dmp

Filesize
4KB

Download
memory/2508-10-0x0000000074F7E000-0x0000000074F7F000-memory.dmp

Filesize
4KB

Download
memory/2508-5-0x0000000074F70000-0x0000000075720000-memory.dmp

Filesize
7.7MB

Download
memory/2508-25-0x0000000074F70000-0x0000000075720000-memory.dmp

Filesize
7.7MB

Download
memory/2508-4-0x00000000058A0000-0x00000000058AA000-memory.dmp

Filesize
40KB

Download
memory/2508-3-0x0000000005940000-0x00000000059D2000-memory.dmp

Filesize
584KB

Download
memory/2508-2-0x0000000005EF0000-0x0000000006494000-memory.dmp

Filesize
5.6MB

Download
memory/2508-1-0x0000000000E70000-0x0000000000EB6000-memory.dmp

Filesize
280KB

Download
memory/5896-29-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download