asyncrat | ae74cd3811dd7af7f1ecebdbee210c8ed6175251f64284361587439983523e04

General

Target

9a6424790f1417195908979b877f51b0N.exe
Size

265KB
MD5

9a6424790f1417195908979b877f51b0
SHA1

e6ae0f82782c3b85a8cf2a2cbe0a3af64ee0b789
SHA256

ae74cd3811dd7af7f1ecebdbee210c8ed6175251f64284361587439983523e04
SHA512

8d7e75cc50dff3289c8d64220283eb9fafb8d74f9e459c9c6a58a324d4f119ad1832247c5ea030b06fa704d498b92bd364ea4165607180247df5beddf90ebf61
SSDEEP

3072:WdvzDqxs8ORikgogWfiuRXd3YmSffdTKXNXANewGBvskX1pWA/m:WFzDqa86hV6uRRqX1evPlwAe

Score

10^/10

asyncrat 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/1132-28-0x0000000000400000-0x0000000000430000-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-1-5-21-701583114-2636601053-947405450-1000\Control Panel\International\Geo\Nation	9a6424790f1417195908979b877f51b0N.exe

Executes dropped EXE 1 IoCs

pid	Process
4216	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-1-5-21-701583114-2636601053-947405450-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HiPatch = "C:\\Users\\Admin\\AppData\\Roaming\\HiPatch\\HiPatchService.exe"	9a6424790f1417195908979b877f51b0N.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4216 set thread context of 1132	4216	HiPatchService.exe	90

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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

evasion

pid	Process
3828	timeout.exe

Suspicious behavior: EnumeratesProcesses 26 IoCs

pid	Process
1132	RegAsm.exe
1132	RegAsm.exe
1132	RegAsm.exe
1132	RegAsm.exe
1132	RegAsm.exe
1132	RegAsm.exe
1132	RegAsm.exe
1132	RegAsm.exe
1132	RegAsm.exe
1132	RegAsm.exe
1132	RegAsm.exe
1132	RegAsm.exe
1132	RegAsm.exe
1132	RegAsm.exe
1132	RegAsm.exe
1132	RegAsm.exe
1132	RegAsm.exe
1132	RegAsm.exe
1132	RegAsm.exe
1132	RegAsm.exe
1132	RegAsm.exe
1132	RegAsm.exe
1132	RegAsm.exe
1132	RegAsm.exe
1132	RegAsm.exe
1132	RegAsm.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 3140 wrote to memory of 4216	3140	9a6424790f1417195908979b877f51b0N.exe	86
PID 3140 wrote to memory of 4216	3140	9a6424790f1417195908979b877f51b0N.exe	86
PID 3140 wrote to memory of 4216	3140	9a6424790f1417195908979b877f51b0N.exe	86
PID 3140 wrote to memory of 4612	3140	9a6424790f1417195908979b877f51b0N.exe	87
PID 3140 wrote to memory of 4612	3140	9a6424790f1417195908979b877f51b0N.exe	87
PID 3140 wrote to memory of 4612	3140	9a6424790f1417195908979b877f51b0N.exe	87
PID 4612 wrote to memory of 3828	4612	cmd.exe	89
PID 4612 wrote to memory of 3828	4612	cmd.exe	89
PID 4612 wrote to memory of 3828	4612	cmd.exe	89
PID 4216 wrote to memory of 1132	4216	HiPatchService.exe	90
PID 4216 wrote to memory of 1132	4216	HiPatchService.exe	90
PID 4216 wrote to memory of 1132	4216	HiPatchService.exe	90
PID 4216 wrote to memory of 1132	4216	HiPatchService.exe	90
PID 4216 wrote to memory of 1132	4216	HiPatchService.exe	90
PID 4216 wrote to memory of 1132	4216	HiPatchService.exe	90
PID 4216 wrote to memory of 1132	4216	HiPatchService.exe	90
PID 4216 wrote to memory of 1132	4216	HiPatchService.exe	90

C:\Users\Admin\AppData\Local\Temp\9a6424790f1417195908979b877f51b0N.exe
"C:\Users\Admin\AppData\Local\Temp\9a6424790f1417195908979b877f51b0N.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:3140
- C:\Users\Admin\AppData\Roaming\HiPatch\HiPatchService.exe
  "C:\Users\Admin\AppData\Roaming\HiPatch\HiPatchService.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:4216
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
    3⤵
    - Checks processor information in registry
    - Suspicious behavior: EnumeratesProcesses
    PID:1132
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\HiPatch\HiPatchService.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4612
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 180
    3⤵
    - Delays execution with timeout.exe
    PID:3828

C:\Windows\system32\wbem\WmiApSrv.exe
C:\Windows\system32\wbem\WmiApSrv.exe
1⤵
PID:3104

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

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
265KB

MD5
97a35db208073485f8a2979c442f1b9b

SHA1
73e607ca8c556e5c91d8fc02550d63cdaf1da1e2

SHA256
9df2b4b8f8feb91d223bba4132b29176196151dbd137a173ff9a606302c1119d

SHA512
174c06c8c0037ad2f0679b8640b22eae64f7821900b80d08c8e6a49331426810f3e96989e4e22f6611ba5b7758deaaf72499acea58c595bb4599fe6ff7562fe9

Download Submit
memory/1132-28-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/3140-6-0x0000000005020000-0x000000000502A000-memory.dmp

Filesize
40KB

Download
memory/3140-5-0x0000000074A00000-0x00000000751B0000-memory.dmp

Filesize
7.7MB

Download
memory/3140-4-0x0000000005030000-0x000000000503A000-memory.dmp

Filesize
40KB

Download
memory/3140-0-0x0000000074A0E000-0x0000000074A0F000-memory.dmp

Filesize
4KB

Download
memory/3140-3-0x0000000004F70000-0x0000000005002000-memory.dmp

Filesize
584KB

Download
memory/3140-25-0x0000000074A00000-0x00000000751B0000-memory.dmp

Filesize
7.7MB

Download
memory/3140-2-0x0000000005460000-0x0000000005A04000-memory.dmp

Filesize
5.6MB

Download
memory/3140-1-0x0000000000540000-0x0000000000586000-memory.dmp

Filesize
280KB

Download
memory/4216-24-0x0000000074A00000-0x00000000751B0000-memory.dmp

Filesize
7.7MB

Download
memory/4216-26-0x0000000074A00000-0x00000000751B0000-memory.dmp

Filesize
7.7MB

Download
memory/4216-30-0x0000000074A00000-0x00000000751B0000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads