asyncrat | d026f3bf510f55633de34e9eb2181e530be7caf85c4a4aeb6ed5523db45573a3

General

Target

4ed6463ee5bff60d1e2b9323e37f0510N.exe
Size

266KB
MD5

4ed6463ee5bff60d1e2b9323e37f0510
SHA1

4f8c2e8d9b1c32e41f26b53afee0cfb16c61124d
SHA256

d026f3bf510f55633de34e9eb2181e530be7caf85c4a4aeb6ed5523db45573a3
SHA512

db100babd85a6dd27473f30e51f1c7c319d367a43cf1c3309adb1a554a402b9203b10c8d7bd3596b5a100e40141ced6fb3b02d4fab4e24001e38f38ca8d4d94f
SSDEEP

3072:WdvzDqxs8ORikgogWfiuRXd3YmSffdTKXNXANewGBvskX1pWA/sK:WFzDqa86hV6uRRqX1evPlwAEK

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 5 IoCs

A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

resource	yara_rule
behavioral1/memory/2712-34-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral1/memory/2712-31-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral1/memory/2712-29-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral1/memory/2712-36-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral1/memory/2712-35-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def

Executes dropped EXE 1 IoCs

pid	Process
2832	HiPatchService.exe

Loads dropped DLL 1 IoCs

pid	Process
2652	4ed6463ee5bff60d1e2b9323e37f0510N.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-1-5-21-2958949473-3205530200-1453100116-1000\Software\Microsoft\Windows\CurrentVersion\Run\HiPatch = "C:\\Users\\Admin\\AppData\\Roaming\\HiPatch\\HiPatchService.exe"	4ed6463ee5bff60d1e2b9323e37f0510N.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2832 set thread context of 2712	2832	HiPatchService.exe	33

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 4 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	4ed6463ee5bff60d1e2b9323e37f0510N.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	RegAsm.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
2712	RegAsm.exe
2712	RegAsm.exe
2712	RegAsm.exe
2712	RegAsm.exe
2712	RegAsm.exe
2712	RegAsm.exe
2712	RegAsm.exe
2712	RegAsm.exe
2712	RegAsm.exe
2712	RegAsm.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2652 wrote to memory of 2832	2652	4ed6463ee5bff60d1e2b9323e37f0510N.exe	30
PID 2652 wrote to memory of 2832	2652	4ed6463ee5bff60d1e2b9323e37f0510N.exe	30
PID 2652 wrote to memory of 2832	2652	4ed6463ee5bff60d1e2b9323e37f0510N.exe	30
PID 2652 wrote to memory of 2832	2652	4ed6463ee5bff60d1e2b9323e37f0510N.exe	30
PID 2652 wrote to memory of 2832	2652	4ed6463ee5bff60d1e2b9323e37f0510N.exe	30
PID 2652 wrote to memory of 2832	2652	4ed6463ee5bff60d1e2b9323e37f0510N.exe	30
PID 2652 wrote to memory of 2832	2652	4ed6463ee5bff60d1e2b9323e37f0510N.exe	30
PID 2652 wrote to memory of 2776	2652	4ed6463ee5bff60d1e2b9323e37f0510N.exe	31
PID 2652 wrote to memory of 2776	2652	4ed6463ee5bff60d1e2b9323e37f0510N.exe	31
PID 2652 wrote to memory of 2776	2652	4ed6463ee5bff60d1e2b9323e37f0510N.exe	31
PID 2652 wrote to memory of 2776	2652	4ed6463ee5bff60d1e2b9323e37f0510N.exe	31
PID 2652 wrote to memory of 2776	2652	4ed6463ee5bff60d1e2b9323e37f0510N.exe	31
PID 2652 wrote to memory of 2776	2652	4ed6463ee5bff60d1e2b9323e37f0510N.exe	31
PID 2652 wrote to memory of 2776	2652	4ed6463ee5bff60d1e2b9323e37f0510N.exe	31
PID 2832 wrote to memory of 2712	2832	HiPatchService.exe	33
PID 2832 wrote to memory of 2712	2832	HiPatchService.exe	33
PID 2832 wrote to memory of 2712	2832	HiPatchService.exe	33
PID 2832 wrote to memory of 2712	2832	HiPatchService.exe	33
PID 2832 wrote to memory of 2712	2832	HiPatchService.exe	33
PID 2832 wrote to memory of 2712	2832	HiPatchService.exe	33
PID 2832 wrote to memory of 2712	2832	HiPatchService.exe	33
PID 2832 wrote to memory of 2712	2832	HiPatchService.exe	33
PID 2832 wrote to memory of 2712	2832	HiPatchService.exe	33
PID 2832 wrote to memory of 2712	2832	HiPatchService.exe	33
PID 2832 wrote to memory of 2712	2832	HiPatchService.exe	33
PID 2832 wrote to memory of 2712	2832	HiPatchService.exe	33

C:\Users\Admin\AppData\Local\Temp\4ed6463ee5bff60d1e2b9323e37f0510N.exe
"C:\Users\Admin\AppData\Local\Temp\4ed6463ee5bff60d1e2b9323e37f0510N.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2652
- 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:2832
- - 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
    - Suspicious behavior: EnumeratesProcesses
    PID:2712
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Roaming\HiPatch\HiPatchService.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2776

C:\Windows\system32\wbem\WmiApSrv.exe
C:\Windows\system32\wbem\WmiApSrv.exe
1⤵
PID:2264

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

System Information Discovery

1

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
\Users\Admin\AppData\Roaming\HiPatch\HiPatchService.exe

Filesize
267KB

MD5
7e1d1876cea22a4cb6e39874ad8b0149

SHA1
5c1ecf245293c2017bc303452a731585c54b8c85

SHA256
85bc13d1cadd22f327b52c6e926fb4f20343c62ce283596078ca01553a311f27

SHA512
22462dfa8fa6c3ec512a732d034ee7ac3dc9701f1d25fd3bd2cfa7212fef7dcccbbba6cb4af28d213a829caf148eeea1ac2899b74c71b17e44e5b3c7c6772729

Download Submit
memory/2652-24-0x0000000074060000-0x000000007474E000-memory.dmp

Filesize
6.9MB

Download
memory/2652-1-0x0000000000140000-0x0000000000186000-memory.dmp

Filesize
280KB

Download
memory/2652-2-0x00000000002D0000-0x00000000002DA000-memory.dmp

Filesize
40KB

Download
memory/2652-3-0x0000000074060000-0x000000007474E000-memory.dmp

Filesize
6.9MB

Download
memory/2652-0-0x000000007406E000-0x000000007406F000-memory.dmp

Filesize
4KB

Download
memory/2712-29-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2712-34-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2712-33-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2712-31-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2712-27-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2712-25-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2712-36-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2712-35-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2832-23-0x0000000000840000-0x0000000000886000-memory.dmp

Filesize
280KB

Download
memory/2832-22-0x0000000074060000-0x000000007474E000-memory.dmp

Filesize
6.9MB

Download
memory/2832-37-0x0000000074060000-0x000000007474E000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads