asyncrat | 916778d1feed61663c9e8f5c078d00c336ac87a82b685ccb32dbe7ec379576d9

General

Target

916778d1feed61663c9e8f5c078d00c336ac87a82b685ccb32dbe7ec379576d9.exe
Size

266KB
MD5

67882cbc280299f97f801585d1e3eb0c
SHA1

19b1072622634494ec95a85d4521c32e5c7a8647
SHA256

916778d1feed61663c9e8f5c078d00c336ac87a82b685ccb32dbe7ec379576d9
SHA512

aeea3d8f56dc7a1ade886fb6b63f66896f1c9c1f19f8b61155a34f3b7aefe50d59bcfa01943914c03a292a16a694111b103efc7c07e8e927c8f5787dac7827bf
SSDEEP

3072:WdvzDqxs8ORikgogWfiuRXd3YmSffdTKXNXANewGBvskX1pWA/s8V:WFzDqa86hV6uRRqX1evPlwAEI

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/4356-28-0x0000000000400000-0x0000000000430000-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-1-5-21-2636447293-1148739154-93880854-1000\Control Panel\International\Geo\Nation	916778d1feed61663c9e8f5c078d00c336ac87a82b685ccb32dbe7ec379576d9.exe

Executes dropped EXE 1 IoCs

pid	Process
1536	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-1-5-21-2636447293-1148739154-93880854-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HiPatch = "C:\\Users\\Admin\\AppData\\Roaming\\HiPatch\\HiPatchService.exe"	916778d1feed61663c9e8f5c078d00c336ac87a82b685ccb32dbe7ec379576d9.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1536 set thread context of 4356	1536	HiPatchService.exe	98

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
3384	timeout.exe

Suspicious behavior: EnumeratesProcesses 25 IoCs

pid	Process
4356	RegAsm.exe
4356	RegAsm.exe
4356	RegAsm.exe
4356	RegAsm.exe
4356	RegAsm.exe
4356	RegAsm.exe
4356	RegAsm.exe
4356	RegAsm.exe
4356	RegAsm.exe
4356	RegAsm.exe
4356	RegAsm.exe
4356	RegAsm.exe
4356	RegAsm.exe
4356	RegAsm.exe
4356	RegAsm.exe
4356	RegAsm.exe
4356	RegAsm.exe
4356	RegAsm.exe
4356	RegAsm.exe
4356	RegAsm.exe
4356	RegAsm.exe
4356	RegAsm.exe
4356	RegAsm.exe
4356	RegAsm.exe
4356	RegAsm.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 2244 wrote to memory of 1536	2244	916778d1feed61663c9e8f5c078d00c336ac87a82b685ccb32dbe7ec379576d9.exe	92
PID 2244 wrote to memory of 1536	2244	916778d1feed61663c9e8f5c078d00c336ac87a82b685ccb32dbe7ec379576d9.exe	92
PID 2244 wrote to memory of 1536	2244	916778d1feed61663c9e8f5c078d00c336ac87a82b685ccb32dbe7ec379576d9.exe	92
PID 2244 wrote to memory of 448	2244	916778d1feed61663c9e8f5c078d00c336ac87a82b685ccb32dbe7ec379576d9.exe	93
PID 2244 wrote to memory of 448	2244	916778d1feed61663c9e8f5c078d00c336ac87a82b685ccb32dbe7ec379576d9.exe	93
PID 2244 wrote to memory of 448	2244	916778d1feed61663c9e8f5c078d00c336ac87a82b685ccb32dbe7ec379576d9.exe	93
PID 448 wrote to memory of 3384	448	cmd.exe	96
PID 448 wrote to memory of 3384	448	cmd.exe	96
PID 448 wrote to memory of 3384	448	cmd.exe	96
PID 1536 wrote to memory of 4356	1536	HiPatchService.exe	98
PID 1536 wrote to memory of 4356	1536	HiPatchService.exe	98
PID 1536 wrote to memory of 4356	1536	HiPatchService.exe	98
PID 1536 wrote to memory of 4356	1536	HiPatchService.exe	98
PID 1536 wrote to memory of 4356	1536	HiPatchService.exe	98
PID 1536 wrote to memory of 4356	1536	HiPatchService.exe	98
PID 1536 wrote to memory of 4356	1536	HiPatchService.exe	98
PID 1536 wrote to memory of 4356	1536	HiPatchService.exe	98

C:\Users\Admin\AppData\Local\Temp\916778d1feed61663c9e8f5c078d00c336ac87a82b685ccb32dbe7ec379576d9.exe
"C:\Users\Admin\AppData\Local\Temp\916778d1feed61663c9e8f5c078d00c336ac87a82b685ccb32dbe7ec379576d9.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2244
- 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:1536
- - 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:4356
- 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:448
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 180
    3⤵
    - Delays execution with timeout.exe
    PID:3384

C:\Windows\system32\wbem\WmiApSrv.exe
C:\Windows\system32\wbem\WmiApSrv.exe
1⤵
PID:3588

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
266KB

MD5
2b0acb12cc0fa9d544d01be423a83365

SHA1
3b2d4339b45a510aedd98775e98b58000d4511f0

SHA256
4939c8f7ac20fdbb6e006e538bf3491614da30b5a9f901de921dae6740507a11

SHA512
b514d05886539755040a9bc453bcc7c4654b92458bd270760940597a01b528786fb1456c89029b1b02e721fbcb9d2187dfc5020d9fdcb7abe9d385f4f492363c

Download Submit
memory/1536-30-0x0000000074A40000-0x00000000751F0000-memory.dmp

Filesize
7.7MB

Download
memory/1536-27-0x0000000074A40000-0x00000000751F0000-memory.dmp

Filesize
7.7MB

Download
memory/1536-24-0x0000000074A40000-0x00000000751F0000-memory.dmp

Filesize
7.7MB

Download
memory/2244-6-0x00000000050F0000-0x00000000050FA000-memory.dmp

Filesize
40KB

Download
memory/2244-0-0x0000000074A4E000-0x0000000074A4F000-memory.dmp

Filesize
4KB

Download
memory/2244-5-0x0000000074A40000-0x00000000751F0000-memory.dmp

Filesize
7.7MB

Download
memory/2244-4-0x0000000005100000-0x000000000510A000-memory.dmp

Filesize
40KB

Download
memory/2244-25-0x0000000074A40000-0x00000000751F0000-memory.dmp

Filesize
7.7MB

Download
memory/2244-3-0x0000000005160000-0x00000000051F2000-memory.dmp

Filesize
584KB

Download
memory/2244-2-0x0000000005670000-0x0000000005C14000-memory.dmp

Filesize
5.6MB

Download
memory/2244-1-0x00000000006A0000-0x00000000006E6000-memory.dmp

Filesize
280KB

Download
memory/4356-28-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads