asyncrat | 336fae3f009b86bac7ab40db44ea36cb624c68f6edafcc5fe9d07f2f9d4ef9d9

General

Target

6b4f89fbf1279dceeead559f678d68c0N.exe
Size

266KB
MD5

6b4f89fbf1279dceeead559f678d68c0
SHA1

e87fea96d79a173387899646256e8a4054a82571
SHA256

336fae3f009b86bac7ab40db44ea36cb624c68f6edafcc5fe9d07f2f9d4ef9d9
SHA512

4541d72623e19ca1800c5f92ea34dd4ef0edb7a6dc7787f8314e45420ffff10a0d945fa3f8e54cf900686780ab9dda662a978326633c0e53f5e83e85446bae7d
SSDEEP

3072:WdvzDqxs8ORikgogWfiuRXd3YmSffdTKXNXANewGBvskX1pWA/s2:WFzDqa86hV6uRRqX1evPlwAE2

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/3604-28-0x0000000000400000-0x0000000000430000-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	6b4f89fbf1279dceeead559f678d68c0N.exe

Executes dropped EXE 1 IoCs

pid	Process
3164	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"	6b4f89fbf1279dceeead559f678d68c0N.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3164 set thread context of 3604	3164	HiPatchService.exe	91

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
3148	timeout.exe

Suspicious behavior: EnumeratesProcesses 28 IoCs

pid	Process
3164	HiPatchService.exe
3164	HiPatchService.exe
3604	RegAsm.exe
3604	RegAsm.exe
3604	RegAsm.exe
3604	RegAsm.exe
3604	RegAsm.exe
3604	RegAsm.exe
3604	RegAsm.exe
3604	RegAsm.exe
3604	RegAsm.exe
3604	RegAsm.exe
3604	RegAsm.exe
3604	RegAsm.exe
3604	RegAsm.exe
3604	RegAsm.exe
3604	RegAsm.exe
3604	RegAsm.exe
3604	RegAsm.exe
3604	RegAsm.exe
3604	RegAsm.exe
3604	RegAsm.exe
3604	RegAsm.exe
3604	RegAsm.exe
3604	RegAsm.exe
3604	RegAsm.exe
3604	RegAsm.exe
3604	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3164	HiPatchService.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 412 wrote to memory of 3164	412	6b4f89fbf1279dceeead559f678d68c0N.exe	86
PID 412 wrote to memory of 3164	412	6b4f89fbf1279dceeead559f678d68c0N.exe	86
PID 412 wrote to memory of 3164	412	6b4f89fbf1279dceeead559f678d68c0N.exe	86
PID 412 wrote to memory of 4264	412	6b4f89fbf1279dceeead559f678d68c0N.exe	87
PID 412 wrote to memory of 4264	412	6b4f89fbf1279dceeead559f678d68c0N.exe	87
PID 412 wrote to memory of 4264	412	6b4f89fbf1279dceeead559f678d68c0N.exe	87
PID 4264 wrote to memory of 3148	4264	cmd.exe	89
PID 4264 wrote to memory of 3148	4264	cmd.exe	89
PID 4264 wrote to memory of 3148	4264	cmd.exe	89
PID 3164 wrote to memory of 1920	3164	HiPatchService.exe	90
PID 3164 wrote to memory of 1920	3164	HiPatchService.exe	90
PID 3164 wrote to memory of 1920	3164	HiPatchService.exe	90
PID 3164 wrote to memory of 3604	3164	HiPatchService.exe	91
PID 3164 wrote to memory of 3604	3164	HiPatchService.exe	91
PID 3164 wrote to memory of 3604	3164	HiPatchService.exe	91
PID 3164 wrote to memory of 3604	3164	HiPatchService.exe	91
PID 3164 wrote to memory of 3604	3164	HiPatchService.exe	91
PID 3164 wrote to memory of 3604	3164	HiPatchService.exe	91
PID 3164 wrote to memory of 3604	3164	HiPatchService.exe	91
PID 3164 wrote to memory of 3604	3164	HiPatchService.exe	91

C:\Users\Admin\AppData\Local\Temp\6b4f89fbf1279dceeead559f678d68c0N.exe
"C:\Users\Admin\AppData\Local\Temp\6b4f89fbf1279dceeead559f678d68c0N.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:412
- 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 behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3164
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
    3⤵
    PID:1920
- - 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:3604
- 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:4264
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 180
    3⤵
    - Delays execution with timeout.exe
    PID:3148

C:\Windows\system32\wbem\WmiApSrv.exe
C:\Windows\system32\wbem\WmiApSrv.exe
1⤵
PID:4508

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
df413a5e5975dc2a6f791a353b0d9d95

SHA1
28cec98fb0383d1240d911c0b79b15498e282632

SHA256
0a68253d76755c5d92930e78954b70260ff89b393565f15ca56b5abfe8935b1e

SHA512
0a2ebf454a01ddd8084146757c66b54a7083da14dab4b39aa0ec74b0abc3969894edf4fd5cf554f643d1ec2c7803614733830442ad7f2a9864cfa1beb981fd89

Download Submit
memory/412-6-0x0000000004C00000-0x0000000004C0A000-memory.dmp

Filesize
40KB

Download
memory/412-3-0x0000000004B50000-0x0000000004BE2000-memory.dmp

Filesize
584KB

Download
memory/412-4-0x0000000074920000-0x00000000750D0000-memory.dmp

Filesize
7.7MB

Download
memory/412-5-0x0000000004C20000-0x0000000004C2A000-memory.dmp

Filesize
40KB

Download
memory/412-0-0x000000007492E000-0x000000007492F000-memory.dmp

Filesize
4KB

Download
memory/412-2-0x00000000051D0000-0x0000000005774000-memory.dmp

Filesize
5.6MB

Download
memory/412-24-0x0000000074920000-0x00000000750D0000-memory.dmp

Filesize
7.7MB

Download
memory/412-1-0x0000000000130000-0x0000000000176000-memory.dmp

Filesize
280KB

Download
memory/3164-25-0x0000000074920000-0x00000000750D0000-memory.dmp

Filesize
7.7MB

Download
memory/3164-26-0x0000000074920000-0x00000000750D0000-memory.dmp

Filesize
7.7MB

Download
memory/3164-30-0x0000000074920000-0x00000000750D0000-memory.dmp

Filesize
7.7MB

Download
memory/3604-28-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads