asyncrat | 3713bfe60a8aa6b8b1e18c24620be65f1408f558b19ff12d1f36e13cdde0bba4

General

Target

3713bfe60a8aa6b8b1e18c24620be65f1408f558b19ff12d1f36e13cdde0bba4.exe
Size

268KB
MD5

27e21944f68cafbaff6317bdc87e1e25
SHA1

5b4f54139518903f3ff1ec5c4c2b78692e432c5b
SHA256

3713bfe60a8aa6b8b1e18c24620be65f1408f558b19ff12d1f36e13cdde0bba4
SHA512

eb7d00abd4d865a07b09271980cfd9103d1429193e161b14f299d62adfb26882a526ecdc298c3bc04609007aba495f9198e99ce6e8638e121a416fc1145fae1d
SSDEEP

3072:WdvzDqxs8ORikgogWfiuRXd3YmSffdTKXNXANewGBvskX1pWA/s8DF6:WFzDqa86hV6uRRqX1evPlwAEQF6

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/3560-30-0x0000000000400000-0x0000000000430000-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:

3713bfe60a8aa6b8b1e18c24620be65f1408f558b19ff12d1f36e13cdde0bba4.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	3713bfe60a8aa6b8b1e18c24620be65f1408f558b19ff12d1f36e13cdde0bba4.exe

Executes dropped EXE 1 IoCs

Processes:

HiPatchService.exe

pid process

4480 HiPatchService.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

3713bfe60a8aa6b8b1e18c24620be65f1408f558b19ff12d1f36e13cdde0bba4.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HiPatch = "C:\\Users\\Admin\\AppData\\Roaming\\HiPatch\\HiPatchService.exe"	3713bfe60a8aa6b8b1e18c24620be65f1408f558b19ff12d1f36e13cdde0bba4.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

HiPatchService.exe

description pid process target process

PID 4480 set thread context of 3560 4480 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 4480 set thread context of 3560	4480	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:

3713bfe60a8aa6b8b1e18c24620be65f1408f558b19ff12d1f36e13cdde0bba4.exeHiPatchService.execmd.exetimeout.exeRegAsm.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3713bfe60a8aa6b8b1e18c24620be65f1408f558b19ff12d1f36e13cdde0bba4.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	HiPatchService.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.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

4716 timeout.exe

pid	process
4716	timeout.exe

Suspicious behavior: EnumeratesProcesses 28 IoCs

Processes:

HiPatchService.exeRegAsm.exe

pid	process
4480	HiPatchService.exe
4480	HiPatchService.exe
3560	RegAsm.exe
3560	RegAsm.exe
3560	RegAsm.exe
3560	RegAsm.exe
3560	RegAsm.exe
3560	RegAsm.exe
3560	RegAsm.exe
3560	RegAsm.exe
3560	RegAsm.exe
3560	RegAsm.exe
3560	RegAsm.exe
3560	RegAsm.exe
3560	RegAsm.exe
3560	RegAsm.exe
3560	RegAsm.exe
3560	RegAsm.exe
3560	RegAsm.exe
3560	RegAsm.exe
3560	RegAsm.exe
3560	RegAsm.exe
3560	RegAsm.exe
3560	RegAsm.exe
3560	RegAsm.exe
3560	RegAsm.exe
3560	RegAsm.exe
3560	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

HiPatchService.exe

description pid process

Token: SeDebugPrivilege 4480 HiPatchService.exe

description	pid	process
Token: SeDebugPrivilege	4480	HiPatchService.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

3713bfe60a8aa6b8b1e18c24620be65f1408f558b19ff12d1f36e13cdde0bba4.execmd.exeHiPatchService.exe

description	pid	process	target process
PID 716 wrote to memory of 4480	716	3713bfe60a8aa6b8b1e18c24620be65f1408f558b19ff12d1f36e13cdde0bba4.exe	HiPatchService.exe
PID 716 wrote to memory of 4480	716	3713bfe60a8aa6b8b1e18c24620be65f1408f558b19ff12d1f36e13cdde0bba4.exe	HiPatchService.exe
PID 716 wrote to memory of 4480	716	3713bfe60a8aa6b8b1e18c24620be65f1408f558b19ff12d1f36e13cdde0bba4.exe	HiPatchService.exe
PID 716 wrote to memory of 4396	716	3713bfe60a8aa6b8b1e18c24620be65f1408f558b19ff12d1f36e13cdde0bba4.exe	cmd.exe
PID 716 wrote to memory of 4396	716	3713bfe60a8aa6b8b1e18c24620be65f1408f558b19ff12d1f36e13cdde0bba4.exe	cmd.exe
PID 716 wrote to memory of 4396	716	3713bfe60a8aa6b8b1e18c24620be65f1408f558b19ff12d1f36e13cdde0bba4.exe	cmd.exe
PID 4396 wrote to memory of 4716	4396	cmd.exe	timeout.exe
PID 4396 wrote to memory of 4716	4396	cmd.exe	timeout.exe
PID 4396 wrote to memory of 4716	4396	cmd.exe	timeout.exe
PID 4480 wrote to memory of 408	4480	HiPatchService.exe	RegAsm.exe
PID 4480 wrote to memory of 408	4480	HiPatchService.exe	RegAsm.exe
PID 4480 wrote to memory of 408	4480	HiPatchService.exe	RegAsm.exe
PID 4480 wrote to memory of 3560	4480	HiPatchService.exe	RegAsm.exe
PID 4480 wrote to memory of 3560	4480	HiPatchService.exe	RegAsm.exe
PID 4480 wrote to memory of 3560	4480	HiPatchService.exe	RegAsm.exe
PID 4480 wrote to memory of 3560	4480	HiPatchService.exe	RegAsm.exe
PID 4480 wrote to memory of 3560	4480	HiPatchService.exe	RegAsm.exe
PID 4480 wrote to memory of 3560	4480	HiPatchService.exe	RegAsm.exe
PID 4480 wrote to memory of 3560	4480	HiPatchService.exe	RegAsm.exe
PID 4480 wrote to memory of 3560	4480	HiPatchService.exe	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\3713bfe60a8aa6b8b1e18c24620be65f1408f558b19ff12d1f36e13cdde0bba4.exe
"C:\Users\Admin\AppData\Local\Temp\3713bfe60a8aa6b8b1e18c24620be65f1408f558b19ff12d1f36e13cdde0bba4.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:716

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 behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4480

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
3⤵
PID:408

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:3560

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:4396

C:\Windows\SysWOW64\timeout.exe
timeout /t 180
3⤵
- System Location Discovery: System Language Discovery
- Delays execution with timeout.exe
PID:4716

C:\Windows\system32\wbem\WmiApSrv.exe
C:\Windows\system32\wbem\WmiApSrv.exe
1⤵
PID:1572

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
268KB

MD5
d5513f095084b0c49e2fdd2092bb2bea

SHA1
ab061f04b6cb505b1093aa8a53a4c90c2c141936

SHA256
cb9ceb7b80b025045253499f6fb635ef8508cbb02a1c7f43c175cb0792833e64

SHA512
b04f8c9b0c33bf1129cb0398482827e5bdf300738ad9e0c4fe82498d2a18bf30dd98d3d3a4a59265f1076a93e69f8a59de6be1ccd6e1c01345cd3ebd0574954b

Download Submit
memory/716-5-0x0000000074780000-0x0000000074F30000-memory.dmp

Filesize
7.7MB

Download
memory/716-24-0x0000000074780000-0x0000000074F30000-memory.dmp

Filesize
7.7MB

Download
memory/716-0-0x000000007478E000-0x000000007478F000-memory.dmp

Filesize
4KB

Download
memory/716-4-0x0000000005300000-0x000000000530A000-memory.dmp

Filesize
40KB

Download
memory/716-6-0x00000000052E0000-0x00000000052EA000-memory.dmp

Filesize
40KB

Download
memory/716-10-0x000000007478E000-0x000000007478F000-memory.dmp

Filesize
4KB

Download
memory/716-2-0x0000000005610000-0x0000000005BB4000-memory.dmp

Filesize
5.6MB

Download
memory/716-3-0x0000000005140000-0x00000000051D2000-memory.dmp

Filesize
584KB

Download
memory/716-1-0x0000000000710000-0x0000000000756000-memory.dmp

Filesize
280KB

Download
memory/716-27-0x0000000074780000-0x0000000074F30000-memory.dmp

Filesize
7.7MB

Download
memory/3560-30-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/4480-28-0x0000000074780000-0x0000000074F30000-memory.dmp

Filesize
7.7MB

Download
memory/4480-26-0x0000000074780000-0x0000000074F30000-memory.dmp

Filesize
7.7MB

Download
memory/4480-32-0x0000000074780000-0x0000000074F30000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads