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 5 IoCs

A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

Processes:

resource	yara_rule
behavioral1/memory/2656-38-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral1/memory/2656-37-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral1/memory/2656-36-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral1/memory/2656-31-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral1/memory/2656-33-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def

Executes dropped EXE 1 IoCs

Processes:

HiPatchService.exe

pid process

2460 HiPatchService.exe
Loads dropped DLL 1 IoCs

Processes:

3713bfe60a8aa6b8b1e18c24620be65f1408f558b19ff12d1f36e13cdde0bba4.exe

pid process

2316 3713bfe60a8aa6b8b1e18c24620be65f1408f558b19ff12d1f36e13cdde0bba4.exe

pid	process
2460	HiPatchService.exe

pid	process
2316	3713bfe60a8aa6b8b1e18c24620be65f1408f558b19ff12d1f36e13cdde0bba4.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-1-5-21-3551809350-4263495960-1443967649-1000\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 2460 set thread context of 2656 2460 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 2460 set thread context of 2656	2460	HiPatchService.exe	RegAsm.exe

System Location Discovery: System Language Discovery 1 TTPs 4 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:

RegAsm.exe3713bfe60a8aa6b8b1e18c24620be65f1408f558b19ff12d1f36e13cdde0bba4.exeHiPatchService.execmd.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe
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

Suspicious behavior: EnumeratesProcesses 10 IoCs

Processes:

RegAsm.exe

pid	process
2656	RegAsm.exe
2656	RegAsm.exe
2656	RegAsm.exe
2656	RegAsm.exe
2656	RegAsm.exe
2656	RegAsm.exe
2656	RegAsm.exe
2656	RegAsm.exe
2656	RegAsm.exe
2656	RegAsm.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

3713bfe60a8aa6b8b1e18c24620be65f1408f558b19ff12d1f36e13cdde0bba4.exeHiPatchService.exe

description	pid	process	target process
PID 2316 wrote to memory of 2460	2316	3713bfe60a8aa6b8b1e18c24620be65f1408f558b19ff12d1f36e13cdde0bba4.exe	HiPatchService.exe
PID 2316 wrote to memory of 2460	2316	3713bfe60a8aa6b8b1e18c24620be65f1408f558b19ff12d1f36e13cdde0bba4.exe	HiPatchService.exe
PID 2316 wrote to memory of 2460	2316	3713bfe60a8aa6b8b1e18c24620be65f1408f558b19ff12d1f36e13cdde0bba4.exe	HiPatchService.exe
PID 2316 wrote to memory of 2460	2316	3713bfe60a8aa6b8b1e18c24620be65f1408f558b19ff12d1f36e13cdde0bba4.exe	HiPatchService.exe
PID 2316 wrote to memory of 2460	2316	3713bfe60a8aa6b8b1e18c24620be65f1408f558b19ff12d1f36e13cdde0bba4.exe	HiPatchService.exe
PID 2316 wrote to memory of 2460	2316	3713bfe60a8aa6b8b1e18c24620be65f1408f558b19ff12d1f36e13cdde0bba4.exe	HiPatchService.exe
PID 2316 wrote to memory of 2460	2316	3713bfe60a8aa6b8b1e18c24620be65f1408f558b19ff12d1f36e13cdde0bba4.exe	HiPatchService.exe
PID 2316 wrote to memory of 2084	2316	3713bfe60a8aa6b8b1e18c24620be65f1408f558b19ff12d1f36e13cdde0bba4.exe	cmd.exe
PID 2316 wrote to memory of 2084	2316	3713bfe60a8aa6b8b1e18c24620be65f1408f558b19ff12d1f36e13cdde0bba4.exe	cmd.exe
PID 2316 wrote to memory of 2084	2316	3713bfe60a8aa6b8b1e18c24620be65f1408f558b19ff12d1f36e13cdde0bba4.exe	cmd.exe
PID 2316 wrote to memory of 2084	2316	3713bfe60a8aa6b8b1e18c24620be65f1408f558b19ff12d1f36e13cdde0bba4.exe	cmd.exe
PID 2316 wrote to memory of 2084	2316	3713bfe60a8aa6b8b1e18c24620be65f1408f558b19ff12d1f36e13cdde0bba4.exe	cmd.exe
PID 2316 wrote to memory of 2084	2316	3713bfe60a8aa6b8b1e18c24620be65f1408f558b19ff12d1f36e13cdde0bba4.exe	cmd.exe
PID 2316 wrote to memory of 2084	2316	3713bfe60a8aa6b8b1e18c24620be65f1408f558b19ff12d1f36e13cdde0bba4.exe	cmd.exe
PID 2460 wrote to memory of 2656	2460	HiPatchService.exe	RegAsm.exe
PID 2460 wrote to memory of 2656	2460	HiPatchService.exe	RegAsm.exe
PID 2460 wrote to memory of 2656	2460	HiPatchService.exe	RegAsm.exe
PID 2460 wrote to memory of 2656	2460	HiPatchService.exe	RegAsm.exe
PID 2460 wrote to memory of 2656	2460	HiPatchService.exe	RegAsm.exe
PID 2460 wrote to memory of 2656	2460	HiPatchService.exe	RegAsm.exe
PID 2460 wrote to memory of 2656	2460	HiPatchService.exe	RegAsm.exe
PID 2460 wrote to memory of 2656	2460	HiPatchService.exe	RegAsm.exe
PID 2460 wrote to memory of 2656	2460	HiPatchService.exe	RegAsm.exe
PID 2460 wrote to memory of 2656	2460	HiPatchService.exe	RegAsm.exe
PID 2460 wrote to memory of 2656	2460	HiPatchService.exe	RegAsm.exe
PID 2460 wrote to memory of 2656	2460	HiPatchService.exe	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\3713bfe60a8aa6b8b1e18c24620be65f1408f558b19ff12d1f36e13cdde0bba4.exe
"C:\Users\Admin\AppData\Local\Temp\3713bfe60a8aa6b8b1e18c24620be65f1408f558b19ff12d1f36e13cdde0bba4.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2316

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:2460

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
- Suspicious behavior: EnumeratesProcesses
PID:2656

C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Roaming\HiPatch\HiPatchService.bat""
2⤵
- System Location Discovery: System Language Discovery
PID:2084

C:\Windows\system32\wbem\WmiApSrv.exe
C:\Windows\system32\wbem\WmiApSrv.exe
1⤵
PID:2556

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

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

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
f6651e463591a85817a94ed283b04980

SHA1
f7bc7ebdeabb0e056d9962f8794ede3bb1a94f27

SHA256
837b6a996f9151761aa375ed16e09c1bb8f0931a3fbfd845a5b926e6adb8f8f2

SHA512
3eff9cb50ed6c26b0ac509a940ee95f24c815aac18dfde078ee4801482db4f4fc91ceb6c82b16db52694cfdc884f55dd9edd945ed79e6e89216123bc205a6c2b

Download Submit
memory/2316-25-0x0000000074540000-0x0000000074C2E000-memory.dmp

Filesize
6.9MB

Download
memory/2316-20-0x000000007454E000-0x000000007454F000-memory.dmp

Filesize
4KB

Download
memory/2316-22-0x0000000074540000-0x0000000074C2E000-memory.dmp

Filesize
6.9MB

Download
memory/2316-2-0x0000000000570000-0x000000000057A000-memory.dmp

Filesize
40KB

Download
memory/2316-1-0x0000000000BA0000-0x0000000000BE6000-memory.dmp

Filesize
280KB

Download
memory/2316-0-0x000000007454E000-0x000000007454F000-memory.dmp

Filesize
4KB

Download
memory/2316-3-0x0000000074540000-0x0000000074C2E000-memory.dmp

Filesize
6.9MB

Download
memory/2460-39-0x0000000074540000-0x0000000074C2E000-memory.dmp

Filesize
6.9MB

Download
memory/2460-23-0x0000000000960000-0x00000000009A6000-memory.dmp

Filesize
280KB

Download
memory/2460-24-0x0000000074540000-0x0000000074C2E000-memory.dmp

Filesize
6.9MB

Download
memory/2656-27-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2656-37-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2656-36-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2656-35-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2656-31-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2656-33-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2656-29-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2656-38-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads