asyncrat | 4bcbb8983fe7425976c5a1789deff73fb138e80981f5ebfef1f835bcc6757760

max time kernel
147s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20250410-en
resource tags

arch:x64arch:x86image:win10v2004-20250410-enlocale:en-usos:windows10-2004-x64system
submitted
25/04/2025, 14:35

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General

Target
f628fa20e85aaf1cc562cfd512392d3d12da2ef70adc31068f1e3d7f2b0a4f3b.exe
Size 273KB
Sample250425-ryf66svsby
SHA256 f628fa20e85aaf1cc562cfd512392d3d12da2ef70adc31068f1e3d7f2b0a4f3b
MD5 3ef5f71fdec671a56a286ea1866bb640
SHA1 04e90d67cfb7cb470ea9e6d48f4fc765b0ddb472
SHA512 5e724aef6ad8258cf23363911fb74780ff9b6cd469c0ba478d72de2d86b295ed63901e89a0a05466b2c9a7925244f6b02aef3ab9d06f325a1301eb3aedd431d2
SSDEEP 3072:WdvzDqxs8ORikgogWfiuRXd3YmSffdTKXNXANewGBvskX1pWA/s8sdT/u:WFzDqa86hV6uRRqX1evPlwAEdS
MD5 SHA1 SHA512 SSDEEP

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
behavioral5/memory/3244-24-0x0000000000400000-0x0000000000430000-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-1-5-21-3630502724-2561614198-3854231964-1000\Control Panel\International\Geo\Nation	f628fa20e85aaf1cc562cfd512392d3d12da2ef70adc31068f1e3d7f2b0a4f3b.exe

Executes dropped EXE 2 IoCs

pid	Process
6076	HiPatchService.exe
5704	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-1-5-21-3630502724-2561614198-3854231964-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HiPatch = "C:\\Users\\Admin\\AppData\\Roaming\\HiPatch\\HiPatchService.exe"	f628fa20e85aaf1cc562cfd512392d3d12da2ef70adc31068f1e3d7f2b0a4f3b.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 6076 set thread context of 3244	6076	HiPatchService.exe	108
PID 5704 set thread context of 2464	5704	HiPatchService.exe	109

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	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe
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	HiPatchService.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.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
5248	timeout.exe

Suspicious behavior: EnumeratesProcesses 52 IoCs

pid	Process
3244	RegAsm.exe
3244	RegAsm.exe
3244	RegAsm.exe
3244	RegAsm.exe
3244	RegAsm.exe
3244	RegAsm.exe
2464	RegAsm.exe
2464	RegAsm.exe
2464	RegAsm.exe
2464	RegAsm.exe
2464	RegAsm.exe
2464	RegAsm.exe
2464	RegAsm.exe
3244	RegAsm.exe
2464	RegAsm.exe
3244	RegAsm.exe
2464	RegAsm.exe
3244	RegAsm.exe
2464	RegAsm.exe
3244	RegAsm.exe
3244	RegAsm.exe
3244	RegAsm.exe
2464	RegAsm.exe
2464	RegAsm.exe
3244	RegAsm.exe
3244	RegAsm.exe
2464	RegAsm.exe
2464	RegAsm.exe
2464	RegAsm.exe
2464	RegAsm.exe
3244	RegAsm.exe
3244	RegAsm.exe
3244	RegAsm.exe
3244	RegAsm.exe
3244	RegAsm.exe
3244	RegAsm.exe
3244	RegAsm.exe
3244	RegAsm.exe
3244	RegAsm.exe
2464	RegAsm.exe
3244	RegAsm.exe
2464	RegAsm.exe
3244	RegAsm.exe
2464	RegAsm.exe
2464	RegAsm.exe
3244	RegAsm.exe
2464	RegAsm.exe
2464	RegAsm.exe
2464	RegAsm.exe
2464	RegAsm.exe
2464	RegAsm.exe
2464	RegAsm.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 4104 wrote to memory of 6076	4104	cmd.exe	98
PID 4104 wrote to memory of 6076	4104	cmd.exe	98
PID 4104 wrote to memory of 6076	4104	cmd.exe	98
PID 2776 wrote to memory of 5704	2776	f628fa20e85aaf1cc562cfd512392d3d12da2ef70adc31068f1e3d7f2b0a4f3b.exe	104
PID 2776 wrote to memory of 5704	2776	f628fa20e85aaf1cc562cfd512392d3d12da2ef70adc31068f1e3d7f2b0a4f3b.exe	104
PID 2776 wrote to memory of 5704	2776	f628fa20e85aaf1cc562cfd512392d3d12da2ef70adc31068f1e3d7f2b0a4f3b.exe	104
PID 2776 wrote to memory of 5708	2776	f628fa20e85aaf1cc562cfd512392d3d12da2ef70adc31068f1e3d7f2b0a4f3b.exe	105
PID 2776 wrote to memory of 5708	2776	f628fa20e85aaf1cc562cfd512392d3d12da2ef70adc31068f1e3d7f2b0a4f3b.exe	105
PID 2776 wrote to memory of 5708	2776	f628fa20e85aaf1cc562cfd512392d3d12da2ef70adc31068f1e3d7f2b0a4f3b.exe	105
PID 5708 wrote to memory of 5248	5708	cmd.exe	107
PID 5708 wrote to memory of 5248	5708	cmd.exe	107
PID 5708 wrote to memory of 5248	5708	cmd.exe	107
PID 6076 wrote to memory of 3244	6076	HiPatchService.exe	108
PID 6076 wrote to memory of 3244	6076	HiPatchService.exe	108
PID 6076 wrote to memory of 3244	6076	HiPatchService.exe	108
PID 6076 wrote to memory of 3244	6076	HiPatchService.exe	108
PID 6076 wrote to memory of 3244	6076	HiPatchService.exe	108
PID 6076 wrote to memory of 3244	6076	HiPatchService.exe	108
PID 6076 wrote to memory of 3244	6076	HiPatchService.exe	108
PID 6076 wrote to memory of 3244	6076	HiPatchService.exe	108
PID 5704 wrote to memory of 2464	5704	HiPatchService.exe	109
PID 5704 wrote to memory of 2464	5704	HiPatchService.exe	109
PID 5704 wrote to memory of 2464	5704	HiPatchService.exe	109
PID 5704 wrote to memory of 2464	5704	HiPatchService.exe	109
PID 5704 wrote to memory of 2464	5704	HiPatchService.exe	109
PID 5704 wrote to memory of 2464	5704	HiPatchService.exe	109
PID 5704 wrote to memory of 2464	5704	HiPatchService.exe	109
PID 5704 wrote to memory of 2464	5704	HiPatchService.exe	109

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:2776
- 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:5704
- - 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:2464
- 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:5708
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 180
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:5248

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:4104
- 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:6076
- - 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:3244

C:\Windows\system32\wbem\WmiApSrv.exe
C:\Windows\system32\wbem\WmiApSrv.exe
1⤵
PID:4212

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

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

HiPatchService.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\HiPatchService.exe.log
Size 1KB
SHA256 48178f884b8a4dd96e330b210b0530667d9473a7629fc6b4ad12b614bf438ee8
MD5 7ebe314bf617dc3e48b995a6c352740c
SHA1 538f643b7b30f9231a3035c448607f767527a870
SHA512 0ba9d8f4244c15285e254d27b4bff7c49344ff845c48bc0bf0d8563072fab4d6f7a6abe6b6742e8375a08e9a3b3e5d5dc4937ab428dbe2dd8e62892fda04507e
MD5 SHA1 SHA512

Submit Download

HiPatchService.bat

Path C:\Users\Admin\AppData\Roaming\HiPatch\HiPatchService.bat
Size 213B
SHA256 9092dbb1ca1767d1966b7f79349dd95a802a68248251bf070c0f1d74d5681d71
MD5 0955cb4b691d44b37f8b6fad48a33b8e
SHA1 9dae759ae014cc124ab6eed7c8035788c124ae4a
SHA512 08b868a028c1e8d29ed643416850df16f58d44668f9193b46bd3934965e5617a0a4015fc52815c5456023dbde01023450d295b76d936a936f26b602e764b0235
MD5 SHA1 SHA512

Submit Download

HiPatchService.exe

Path C:\Users\Admin\AppData\Roaming\HiPatch\HiPatchService.exe
Size 273KB
SHA256 19126aaba056635aaeda71c7898cddeedee86577c81f5ffd4f659c0a21608282
MD5 ea3cede203f503ac247bc986c0dd0c07
SHA1 83266b96b23591b2dcbc4ef504f80402ada5b001
SHA512 069759f2fb07978266d88fcc47d66515636c2ae1f9b05a8126faeb55797c5937546da422dedbf0cb6d74b19b3118fa7390629c0b579eceef89daf9b91d240c60
SSDEEP 3072:WdvzDqxs8ORikgogWfiuRXd3YmSffdTKXNXANewGBvskX1pWA/s8sdT/L:WFzDqa86hV6uRRqX1evPlwAEd/
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/2776-6-0x00000000747D0000-0x0000000074F80000-memory.dmp

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memory/2776-15-0x00000000747DE000-0x00000000747DF000-memory.dmp

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memory/2776-5-0x00000000059A0000-0x00000000059AA000-memory.dmp

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memory/2776-4-0x00000000059B0000-0x00000000059BA000-memory.dmp

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memory/2776-3-0x0000000005900000-0x0000000005992000-memory.dmp

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memory/2776-0-0x00000000747DE000-0x00000000747DF000-memory.dmp

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memory/2776-22-0x00000000747D0000-0x0000000074F80000-memory.dmp

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memory/2776-1-0x0000000000EC0000-0x0000000000F06000-memory.dmp

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memory/2776-16-0x00000000747D0000-0x0000000074F80000-memory.dmp

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memory/2776-2-0x0000000005FD0000-0x0000000006574000-memory.dmp

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memory/3244-24-0x0000000000400000-0x0000000000430000-memory.dmp

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memory/5704-20-0x00000000747D0000-0x0000000074F80000-memory.dmp

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memory/5704-29-0x00000000747D0000-0x0000000074F80000-memory.dmp

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memory/6076-14-0x00000000747D0000-0x0000000074F80000-memory.dmp

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memory/6076-26-0x00000000747D0000-0x0000000074F80000-memory.dmp

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memory/6076-13-0x00000000747D0000-0x0000000074F80000-memory.dmp

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