asyncrat | 693b320b7ead59116cf3f84bf544e657fcfd36110b1f27f03d182f9c4ffd2158

General

Target

693b320b7ead59116cf3f84bf544e657fcfd36110b1f27f03d182f9c4ffd2158.exe
Size

267KB
MD5

4499e79f07964fc7d7e2e32f4cd5c2bb
SHA1

17b42d7330c8bc9470d9db20e8a1a28bd399b2b6
SHA256

693b320b7ead59116cf3f84bf544e657fcfd36110b1f27f03d182f9c4ffd2158
SHA512

46e474b304485c41de33c876be4edca4e63aadaa62d2863a46df67e019a21ca5f2e11eb6331683f905c62b5a066496da6ac2442f92378376c5967563ff312992
SSDEEP

3072:WdvzDqxs8ORikgogWfiuRXd3YmSffdTKXNXANewGBvskX1pWA/sD:WFzDqa86hV6uRRqX1evPlwAED

Score

10^/10

asyncrat discovery persistence rat

Malware Config

Extracted

Family

asyncrat

Version

0.4.9G

C2

corporation.warzonedns.com:9341

Mutex

480-28105c055659

Attributes

delay
0
install
false
install_folder
%AppData%

aes.plain

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.

Processes:

resource	yara_rule
behavioral2/memory/4156-29-0x0000000000400000-0x0000000000430000-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

Processes:

693b320b7ead59116cf3f84bf544e657fcfd36110b1f27f03d182f9c4ffd2158.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	693b320b7ead59116cf3f84bf544e657fcfd36110b1f27f03d182f9c4ffd2158.exe

Executes dropped EXE 1 IoCs

Processes:

HiPatchService.exe

pid process

2164 HiPatchService.exe

pid	process
2164	HiPatchService.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

693b320b7ead59116cf3f84bf544e657fcfd36110b1f27f03d182f9c4ffd2158.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HiPatch = "C:\\Users\\Admin\\AppData\\Roaming\\HiPatch\\HiPatchService.exe"	693b320b7ead59116cf3f84bf544e657fcfd36110b1f27f03d182f9c4ffd2158.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

HiPatchService.exe

description pid process target process

PID 2164 set thread context of 4156 2164 HiPatchService.exe RegAsm.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

description	pid	process	target process
PID 2164 set thread context of 4156	2164	HiPatchService.exe	RegAsm.exe

System Location Discovery: System Language Discovery 1 TTPs 5 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

Processes:

timeout.exeRegAsm.exe693b320b7ead59116cf3f84bf544e657fcfd36110b1f27f03d182f9c4ffd2158.exeHiPatchService.execmd.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	693b320b7ead59116cf3f84bf544e657fcfd36110b1f27f03d182f9c4ffd2158.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	HiPatchService.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

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

Processes:

RegAsm.exe

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

Processes:

timeout.exe

pid process

4160 timeout.exe

pid	process
4160	timeout.exe

Suspicious behavior: EnumeratesProcesses 25 IoCs

Processes:

RegAsm.exe

pid	process
4156	RegAsm.exe
4156	RegAsm.exe
4156	RegAsm.exe
4156	RegAsm.exe
4156	RegAsm.exe
4156	RegAsm.exe
4156	RegAsm.exe
4156	RegAsm.exe
4156	RegAsm.exe
4156	RegAsm.exe
4156	RegAsm.exe
4156	RegAsm.exe
4156	RegAsm.exe
4156	RegAsm.exe
4156	RegAsm.exe
4156	RegAsm.exe
4156	RegAsm.exe
4156	RegAsm.exe
4156	RegAsm.exe
4156	RegAsm.exe
4156	RegAsm.exe
4156	RegAsm.exe
4156	RegAsm.exe
4156	RegAsm.exe
4156	RegAsm.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

693b320b7ead59116cf3f84bf544e657fcfd36110b1f27f03d182f9c4ffd2158.execmd.exeHiPatchService.exe

description	pid	process	target process
PID 4208 wrote to memory of 2164	4208	693b320b7ead59116cf3f84bf544e657fcfd36110b1f27f03d182f9c4ffd2158.exe	HiPatchService.exe
PID 4208 wrote to memory of 2164	4208	693b320b7ead59116cf3f84bf544e657fcfd36110b1f27f03d182f9c4ffd2158.exe	HiPatchService.exe
PID 4208 wrote to memory of 2164	4208	693b320b7ead59116cf3f84bf544e657fcfd36110b1f27f03d182f9c4ffd2158.exe	HiPatchService.exe
PID 4208 wrote to memory of 4752	4208	693b320b7ead59116cf3f84bf544e657fcfd36110b1f27f03d182f9c4ffd2158.exe	cmd.exe
PID 4208 wrote to memory of 4752	4208	693b320b7ead59116cf3f84bf544e657fcfd36110b1f27f03d182f9c4ffd2158.exe	cmd.exe
PID 4208 wrote to memory of 4752	4208	693b320b7ead59116cf3f84bf544e657fcfd36110b1f27f03d182f9c4ffd2158.exe	cmd.exe
PID 4752 wrote to memory of 4160	4752	cmd.exe	timeout.exe
PID 4752 wrote to memory of 4160	4752	cmd.exe	timeout.exe
PID 4752 wrote to memory of 4160	4752	cmd.exe	timeout.exe
PID 2164 wrote to memory of 4156	2164	HiPatchService.exe	RegAsm.exe
PID 2164 wrote to memory of 4156	2164	HiPatchService.exe	RegAsm.exe
PID 2164 wrote to memory of 4156	2164	HiPatchService.exe	RegAsm.exe
PID 2164 wrote to memory of 4156	2164	HiPatchService.exe	RegAsm.exe
PID 2164 wrote to memory of 4156	2164	HiPatchService.exe	RegAsm.exe
PID 2164 wrote to memory of 4156	2164	HiPatchService.exe	RegAsm.exe
PID 2164 wrote to memory of 4156	2164	HiPatchService.exe	RegAsm.exe
PID 2164 wrote to memory of 4156	2164	HiPatchService.exe	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\693b320b7ead59116cf3f84bf544e657fcfd36110b1f27f03d182f9c4ffd2158.exe
"C:\Users\Admin\AppData\Local\Temp\693b320b7ead59116cf3f84bf544e657fcfd36110b1f27f03d182f9c4ffd2158.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4208

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:2164

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
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:4156

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\HiPatch\HiPatchService.bat""
2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4752

C:\Windows\SysWOW64\timeout.exe
timeout /t 180
3⤵
- System Location Discovery: System Language Discovery
- Delays execution with timeout.exe
PID:4160

C:\Windows\system32\wbem\WmiApSrv.exe
C:\Windows\system32\wbem\WmiApSrv.exe
1⤵
PID:4764

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

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

Filesize
267KB

MD5
fff01bba3eeb7aa20c30ad76eedbc996

SHA1
788b41bcd425a4906f4b99ee83a1190a4748fa6f

SHA256
8df7afb7e277cb3fb050ab75166ae05a61ea863d2b066dedb483587a22bdb825

SHA512
6b694918735a2f12de70b4eeb852bf55d553714435d5a7040dcab9ff369d7de19db10a01458d0c9c29783a3a25dbdde425c2b1f8c7e1b9be7c41b9d72ed7b4fc

Download Submit
memory/2164-31-0x00000000749C0000-0x0000000075170000-memory.dmp

Filesize
7.7MB

Download
memory/2164-28-0x00000000749C0000-0x0000000075170000-memory.dmp

Filesize
7.7MB

Download
memory/2164-26-0x00000000749C0000-0x0000000075170000-memory.dmp

Filesize
7.7MB

Download
memory/4156-29-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/4208-6-0x0000000004E30000-0x0000000004E3A000-memory.dmp

Filesize
40KB

Download
memory/4208-10-0x00000000749CE000-0x00000000749CF000-memory.dmp

Filesize
4KB

Download
memory/4208-0-0x00000000749CE000-0x00000000749CF000-memory.dmp

Filesize
4KB

Download
memory/4208-25-0x00000000749C0000-0x0000000075170000-memory.dmp

Filesize
7.7MB

Download
memory/4208-5-0x00000000749C0000-0x0000000075170000-memory.dmp

Filesize
7.7MB

Download
memory/4208-4-0x0000000004E40000-0x0000000004E4A000-memory.dmp

Filesize
40KB

Download
memory/4208-3-0x0000000004ED0000-0x0000000004F62000-memory.dmp

Filesize
584KB

Download
memory/4208-2-0x00000000053E0000-0x0000000005984000-memory.dmp

Filesize
5.6MB

Download
memory/4208-1-0x00000000003F0000-0x0000000000436000-memory.dmp

Filesize
280KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads