asyncrat | fadd3924c86d093fb1c3d1219cf8d00266913c68f7dcf8bec5f46fd89a283db9

General

Target

c3957982acca86c31eefc4e82b586cc0N.exe
Size

266KB
MD5

c3957982acca86c31eefc4e82b586cc0
SHA1

15ecfc4b2d6744a37df13749652fb53eb2701374
SHA256

fadd3924c86d093fb1c3d1219cf8d00266913c68f7dcf8bec5f46fd89a283db9
SHA512

eb16d44e65a477cde38e6e1907b3e68a4c135853b0db5e7acc422d663a15f31252f9277fd777e8a870db2ba81dee18327e098dd5568e046e334a7a35bf8a824d
SSDEEP

3072:WdvzDqxs8ORikgogWfiuRXd3YmSffdTKXNXANewGBvskX1pWA/z:WFzDqa86hV6uRRqX1evPlwAb

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/2880-28-0x0000000000400000-0x0000000000430000-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-1-5-21-3419463127-3903270268-2580331543-1000\Control Panel\International\Geo\Nation	c3957982acca86c31eefc4e82b586cc0N.exe

Executes dropped EXE 1 IoCs

pid	Process
8	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-1-5-21-3419463127-3903270268-2580331543-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HiPatch = "C:\\Users\\Admin\\AppData\\Roaming\\HiPatch\\HiPatchService.exe"	c3957982acca86c31eefc4e82b586cc0N.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 8 set thread context of 2880	8	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 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
1612	timeout.exe

Suspicious behavior: EnumeratesProcesses 25 IoCs

pid	Process
2880	RegAsm.exe
2880	RegAsm.exe
2880	RegAsm.exe
2880	RegAsm.exe
2880	RegAsm.exe
2880	RegAsm.exe
2880	RegAsm.exe
2880	RegAsm.exe
2880	RegAsm.exe
2880	RegAsm.exe
2880	RegAsm.exe
2880	RegAsm.exe
2880	RegAsm.exe
2880	RegAsm.exe
2880	RegAsm.exe
2880	RegAsm.exe
2880	RegAsm.exe
2880	RegAsm.exe
2880	RegAsm.exe
2880	RegAsm.exe
2880	RegAsm.exe
2880	RegAsm.exe
2880	RegAsm.exe
2880	RegAsm.exe
2880	RegAsm.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 2972 wrote to memory of 8	2972	c3957982acca86c31eefc4e82b586cc0N.exe	93
PID 2972 wrote to memory of 8	2972	c3957982acca86c31eefc4e82b586cc0N.exe	93
PID 2972 wrote to memory of 8	2972	c3957982acca86c31eefc4e82b586cc0N.exe	93
PID 2972 wrote to memory of 236	2972	c3957982acca86c31eefc4e82b586cc0N.exe	94
PID 2972 wrote to memory of 236	2972	c3957982acca86c31eefc4e82b586cc0N.exe	94
PID 2972 wrote to memory of 236	2972	c3957982acca86c31eefc4e82b586cc0N.exe	94
PID 236 wrote to memory of 1612	236	cmd.exe	96
PID 236 wrote to memory of 1612	236	cmd.exe	96
PID 236 wrote to memory of 1612	236	cmd.exe	96
PID 8 wrote to memory of 2880	8	HiPatchService.exe	98
PID 8 wrote to memory of 2880	8	HiPatchService.exe	98
PID 8 wrote to memory of 2880	8	HiPatchService.exe	98
PID 8 wrote to memory of 2880	8	HiPatchService.exe	98
PID 8 wrote to memory of 2880	8	HiPatchService.exe	98
PID 8 wrote to memory of 2880	8	HiPatchService.exe	98
PID 8 wrote to memory of 2880	8	HiPatchService.exe	98
PID 8 wrote to memory of 2880	8	HiPatchService.exe	98

C:\Users\Admin\AppData\Local\Temp\c3957982acca86c31eefc4e82b586cc0N.exe
"C:\Users\Admin\AppData\Local\Temp\c3957982acca86c31eefc4e82b586cc0N.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2972
- 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:8
- - 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:2880
- 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:236
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 180
    3⤵
    - Delays execution with timeout.exe
    PID:1612

C:\Windows\system32\wbem\WmiApSrv.exe
C:\Windows\system32\wbem\WmiApSrv.exe
1⤵
PID:4148

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
834d8e975df796bb8e9a4f9b42416da6

SHA1
1ada69d9190546c82919514278ec3ef1e1afd10b

SHA256
2c7288c442b00d18b526242d0d2265d7792359240abc0991c0d97a87a2940511

SHA512
063be3890f2a3a296765681ec5f920649b9649fc90a653d9eb2aaa70fd5c7cde765ed420e09c5ce81a6c9a0f298990adf9d534ea52d3ea610cd34ffcb056126f

Download Submit
memory/8-30-0x0000000074720000-0x0000000074ED0000-memory.dmp

Filesize
7.7MB

Download
memory/8-27-0x0000000074720000-0x0000000074ED0000-memory.dmp

Filesize
7.7MB

Download
memory/8-24-0x0000000074720000-0x0000000074ED0000-memory.dmp

Filesize
7.7MB

Download
memory/2880-28-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2972-5-0x0000000005800000-0x000000000580A000-memory.dmp

Filesize
40KB

Download
memory/2972-0-0x000000007472E000-0x000000007472F000-memory.dmp

Filesize
4KB

Download
memory/2972-6-0x00000000057F0000-0x00000000057FA000-memory.dmp

Filesize
40KB

Download
memory/2972-25-0x0000000074720000-0x0000000074ED0000-memory.dmp

Filesize
7.7MB

Download
memory/2972-4-0x0000000074720000-0x0000000074ED0000-memory.dmp

Filesize
7.7MB

Download
memory/2972-3-0x0000000005830000-0x00000000058C2000-memory.dmp

Filesize
584KB

Download
memory/2972-2-0x0000000005D40000-0x00000000062E4000-memory.dmp

Filesize
5.6MB

Download
memory/2972-1-0x0000000000DB0000-0x0000000000DF6000-memory.dmp

Filesize
280KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads