asyncrat | e57f5c12f0d16315a298851f3ae86ca19c0c56ea603ca3f7571415a88bc67b5d

General

Target

87944a5ef7ee2c0db8c81da51a2de900N.exe
Size

267KB
MD5

87944a5ef7ee2c0db8c81da51a2de900
SHA1

860ec7241cb7897d20b25df5d5da1042a67ecc44
SHA256

e57f5c12f0d16315a298851f3ae86ca19c0c56ea603ca3f7571415a88bc67b5d
SHA512

291ec1ffad87ddb35a9916b31c70ec0cf6260712ce28d33ac34ff73c1b7eb75aab2da55d37ac7c7cae00583b25d81f4a0764291f0692b7ca5b4ed06db3cd4c84
SSDEEP

3072:WdvzDqxs8ORikgogWfiuRXd3YmSffdTKXNXANewGBvskX1pWA/V:WFzDqa86hV6uRRqX1evPlwAt

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.

resource	yara_rule
behavioral1/memory/2716-37-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral1/memory/2716-36-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral1/memory/2716-35-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral1/memory/2716-32-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral1/memory/2716-31-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def

Executes dropped EXE 1 IoCs

pid	Process
1888	HiPatchService.exe

Loads dropped DLL 1 IoCs

pid	Process
1716	87944a5ef7ee2c0db8c81da51a2de900N.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-1-5-21-2212144002-1172735686-1556890956-1000\Software\Microsoft\Windows\CurrentVersion\Run\HiPatch = "C:\\Users\\Admin\\AppData\\Roaming\\HiPatch\\HiPatchService.exe"	87944a5ef7ee2c0db8c81da51a2de900N.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1888 set thread context of 2716	1888	HiPatchService.exe	33

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	87944a5ef7ee2c0db8c81da51a2de900N.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

pid	Process
2716	RegAsm.exe
2716	RegAsm.exe
2716	RegAsm.exe
2716	RegAsm.exe
2716	RegAsm.exe
2716	RegAsm.exe
2716	RegAsm.exe
2716	RegAsm.exe
2716	RegAsm.exe
2716	RegAsm.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1716 wrote to memory of 1888	1716	87944a5ef7ee2c0db8c81da51a2de900N.exe	30
PID 1716 wrote to memory of 1888	1716	87944a5ef7ee2c0db8c81da51a2de900N.exe	30
PID 1716 wrote to memory of 1888	1716	87944a5ef7ee2c0db8c81da51a2de900N.exe	30
PID 1716 wrote to memory of 1888	1716	87944a5ef7ee2c0db8c81da51a2de900N.exe	30
PID 1716 wrote to memory of 1888	1716	87944a5ef7ee2c0db8c81da51a2de900N.exe	30
PID 1716 wrote to memory of 1888	1716	87944a5ef7ee2c0db8c81da51a2de900N.exe	30
PID 1716 wrote to memory of 1888	1716	87944a5ef7ee2c0db8c81da51a2de900N.exe	30
PID 1716 wrote to memory of 2884	1716	87944a5ef7ee2c0db8c81da51a2de900N.exe	31
PID 1716 wrote to memory of 2884	1716	87944a5ef7ee2c0db8c81da51a2de900N.exe	31
PID 1716 wrote to memory of 2884	1716	87944a5ef7ee2c0db8c81da51a2de900N.exe	31
PID 1716 wrote to memory of 2884	1716	87944a5ef7ee2c0db8c81da51a2de900N.exe	31
PID 1716 wrote to memory of 2884	1716	87944a5ef7ee2c0db8c81da51a2de900N.exe	31
PID 1716 wrote to memory of 2884	1716	87944a5ef7ee2c0db8c81da51a2de900N.exe	31
PID 1716 wrote to memory of 2884	1716	87944a5ef7ee2c0db8c81da51a2de900N.exe	31
PID 1888 wrote to memory of 2716	1888	HiPatchService.exe	33
PID 1888 wrote to memory of 2716	1888	HiPatchService.exe	33
PID 1888 wrote to memory of 2716	1888	HiPatchService.exe	33
PID 1888 wrote to memory of 2716	1888	HiPatchService.exe	33
PID 1888 wrote to memory of 2716	1888	HiPatchService.exe	33
PID 1888 wrote to memory of 2716	1888	HiPatchService.exe	33
PID 1888 wrote to memory of 2716	1888	HiPatchService.exe	33
PID 1888 wrote to memory of 2716	1888	HiPatchService.exe	33
PID 1888 wrote to memory of 2716	1888	HiPatchService.exe	33
PID 1888 wrote to memory of 2716	1888	HiPatchService.exe	33
PID 1888 wrote to memory of 2716	1888	HiPatchService.exe	33
PID 1888 wrote to memory of 2716	1888	HiPatchService.exe	33

C:\Users\Admin\AppData\Local\Temp\87944a5ef7ee2c0db8c81da51a2de900N.exe
"C:\Users\Admin\AppData\Local\Temp\87944a5ef7ee2c0db8c81da51a2de900N.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1716
- 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:1888
- - 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:2716
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Roaming\HiPatch\HiPatchService.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2884

C:\Windows\system32\wbem\WmiApSrv.exe
C:\Windows\system32\wbem\WmiApSrv.exe
1⤵
PID:2260

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

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

Filesize
267KB

MD5
0ca0decbee7218f0c071e1f5ce6f5256

SHA1
8ecf06aee5b2e6a1a645ee3c073e758159e77f5f

SHA256
62b54ad0441c735481bcabb623c504b44a55d5ecc59a4cbdf58351dad9bb6192

SHA512
c7f7a003043225c19f86ef14ae5c761c8f4fc11f35e6fff546a194c8211ed684154dcf61aeb7ba179e91dcaf52ab50ad12d6d4bf9e4d8c3ca4eac8787c24d911

Download Submit
memory/1716-0-0x0000000074D1E000-0x0000000074D1F000-memory.dmp

Filesize
4KB

Download
memory/1716-1-0x00000000001B0000-0x00000000001F6000-memory.dmp

Filesize
280KB

Download
memory/1716-2-0x0000000000290000-0x000000000029A000-memory.dmp

Filesize
40KB

Download
memory/1716-3-0x0000000074D10000-0x00000000753FE000-memory.dmp

Filesize
6.9MB

Download
memory/1716-13-0x0000000074D1E000-0x0000000074D1F000-memory.dmp

Filesize
4KB

Download
memory/1716-22-0x0000000074D10000-0x00000000753FE000-memory.dmp

Filesize
6.9MB

Download
memory/1888-24-0x0000000074D10000-0x00000000753FE000-memory.dmp

Filesize
6.9MB

Download
memory/1888-23-0x0000000000C40000-0x0000000000C86000-memory.dmp

Filesize
280KB

Download
memory/1888-38-0x0000000074D10000-0x00000000753FE000-memory.dmp

Filesize
6.9MB

Download
memory/2716-34-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2716-37-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2716-36-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2716-35-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2716-32-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2716-31-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2716-28-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2716-26-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads