asyncrat | 10b15742922ef94b94c2b9dfe38253b6baea2cc7f24e21e324c05bd9bf0c8f53

General

Target

7da1a8556a3397000f93d1b8f9c7d6c0N.exe
Size

267KB
MD5

7da1a8556a3397000f93d1b8f9c7d6c0
SHA1

641db6af1d33af15baa681a510b668e0f15e1274
SHA256

10b15742922ef94b94c2b9dfe38253b6baea2cc7f24e21e324c05bd9bf0c8f53
SHA512

27ef144e69fa4b34a5a70bbc58f9366d37eb78ba63ddb48849ba575d9514bb5fcc31b8fdfc97431b4aba36f5491c6c36225b7ab395baf0aa95e47e21a7c7b097
SSDEEP

3072:WdvzDqxs8ORikgogWfiuRXd3YmSffdTKXNXANewGBvskX1pWA/sM:WFzDqa86hV6uRRqX1evPlwAEM

Score

10^/10

asyncrat discovery persistence rat

Malware Config

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat 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/3364-28-0x0000000000400000-0x0000000000430000-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-1-5-21-786284298-625481688-3210388970-1000\Control Panel\International\Geo\Nation	7da1a8556a3397000f93d1b8f9c7d6c0N.exe

Executes dropped EXE 1 IoCs

pid	Process
2480	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-1-5-21-786284298-625481688-3210388970-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HiPatch = "C:\\Users\\Admin\\AppData\\Roaming\\HiPatch\\HiPatchService.exe"	7da1a8556a3397000f93d1b8f9c7d6c0N.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2480 set thread context of 3364	2480	HiPatchService.exe	93

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	7da1a8556a3397000f93d1b8f9c7d6c0N.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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	RegAsm.exe
Key opened	\Registry\Machine\HARDWARE\DESCRIPTION\System\CentralProcessor\0	RegAsm.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
3504	timeout.exe

Suspicious behavior: EnumeratesProcesses 32 IoCs

pid	Process
2480	HiPatchService.exe
2480	HiPatchService.exe
2480	HiPatchService.exe
2480	HiPatchService.exe
2480	HiPatchService.exe
2480	HiPatchService.exe
3364	RegAsm.exe
3364	RegAsm.exe
3364	RegAsm.exe
3364	RegAsm.exe
3364	RegAsm.exe
3364	RegAsm.exe
3364	RegAsm.exe
3364	RegAsm.exe
3364	RegAsm.exe
3364	RegAsm.exe
3364	RegAsm.exe
3364	RegAsm.exe
3364	RegAsm.exe
3364	RegAsm.exe
3364	RegAsm.exe
3364	RegAsm.exe
3364	RegAsm.exe
3364	RegAsm.exe
3364	RegAsm.exe
3364	RegAsm.exe
3364	RegAsm.exe
3364	RegAsm.exe
3364	RegAsm.exe
3364	RegAsm.exe
3364	RegAsm.exe
3364	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2480	HiPatchService.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 516 wrote to memory of 2480	516	7da1a8556a3397000f93d1b8f9c7d6c0N.exe	86
PID 516 wrote to memory of 2480	516	7da1a8556a3397000f93d1b8f9c7d6c0N.exe	86
PID 516 wrote to memory of 2480	516	7da1a8556a3397000f93d1b8f9c7d6c0N.exe	86
PID 516 wrote to memory of 876	516	7da1a8556a3397000f93d1b8f9c7d6c0N.exe	87
PID 516 wrote to memory of 876	516	7da1a8556a3397000f93d1b8f9c7d6c0N.exe	87
PID 516 wrote to memory of 876	516	7da1a8556a3397000f93d1b8f9c7d6c0N.exe	87
PID 876 wrote to memory of 3504	876	cmd.exe	89
PID 876 wrote to memory of 3504	876	cmd.exe	89
PID 876 wrote to memory of 3504	876	cmd.exe	89
PID 2480 wrote to memory of 3592	2480	HiPatchService.exe	90
PID 2480 wrote to memory of 3592	2480	HiPatchService.exe	90
PID 2480 wrote to memory of 3592	2480	HiPatchService.exe	90
PID 2480 wrote to memory of 3996	2480	HiPatchService.exe	91
PID 2480 wrote to memory of 3996	2480	HiPatchService.exe	91
PID 2480 wrote to memory of 3996	2480	HiPatchService.exe	91
PID 2480 wrote to memory of 2192	2480	HiPatchService.exe	92
PID 2480 wrote to memory of 2192	2480	HiPatchService.exe	92
PID 2480 wrote to memory of 2192	2480	HiPatchService.exe	92
PID 2480 wrote to memory of 3364	2480	HiPatchService.exe	93
PID 2480 wrote to memory of 3364	2480	HiPatchService.exe	93
PID 2480 wrote to memory of 3364	2480	HiPatchService.exe	93
PID 2480 wrote to memory of 3364	2480	HiPatchService.exe	93
PID 2480 wrote to memory of 3364	2480	HiPatchService.exe	93
PID 2480 wrote to memory of 3364	2480	HiPatchService.exe	93
PID 2480 wrote to memory of 3364	2480	HiPatchService.exe	93
PID 2480 wrote to memory of 3364	2480	HiPatchService.exe	93

C:\Users\Admin\AppData\Local\Temp\7da1a8556a3397000f93d1b8f9c7d6c0N.exe
"C:\Users\Admin\AppData\Local\Temp\7da1a8556a3397000f93d1b8f9c7d6c0N.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:516
- 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:2480
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
    3⤵
    PID:3592
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
    3⤵
    PID:3996
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
    3⤵
    PID:2192
- - 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:3364
- 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:876
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 180
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:3504

C:\Windows\system32\wbem\WmiApSrv.exe
C:\Windows\system32\wbem\WmiApSrv.exe
1⤵
PID:868

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

3

T1082

System Location Discovery

1

T1614

System Language Discovery

1

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
267KB

MD5
d048715c34e332f3ae592290c49ed22f

SHA1
e8685084ceea6624d8353f2da7ca45b243296682

SHA256
f102741a4042b3af687b262a1b7e283578000aa20439a6793a0cd10619526b2a

SHA512
eadce75840efaaf02bfccd0ee58eb7fca9bd72555552fdd33059b0652bda2f48c91cb05852ba84d114a4e1c510bdc8977aede78d2b940b24cf115727d9a82b4a

Download Submit
memory/516-6-0x0000000005540000-0x000000000554A000-memory.dmp

Filesize
40KB

Download
memory/516-3-0x0000000005490000-0x0000000005522000-memory.dmp

Filesize
584KB

Download
memory/516-4-0x0000000005550000-0x000000000555A000-memory.dmp

Filesize
40KB

Download
memory/516-5-0x0000000074910000-0x00000000750C0000-memory.dmp

Filesize
7.7MB

Download
memory/516-0-0x000000007491E000-0x000000007491F000-memory.dmp

Filesize
4KB

Download
memory/516-2-0x0000000005B50000-0x00000000060F4000-memory.dmp

Filesize
5.6MB

Download
memory/516-25-0x0000000074910000-0x00000000750C0000-memory.dmp

Filesize
7.7MB

Download
memory/516-1-0x0000000000A50000-0x0000000000A96000-memory.dmp

Filesize
280KB

Download
memory/2480-24-0x0000000074910000-0x00000000750C0000-memory.dmp

Filesize
7.7MB

Download
memory/2480-27-0x0000000074910000-0x00000000750C0000-memory.dmp

Filesize
7.7MB

Download
memory/2480-30-0x0000000074910000-0x00000000750C0000-memory.dmp

Filesize
7.7MB

Download
memory/3364-28-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads