asyncrat | b9ca3de39b6ff253a9683c6f32666f4882a275e4e7a9df69f4f2787373f88a77

General

Target

b9ca3de39b6ff253a9683c6f32666f4882a275e4e7a9df69f4f2787373f88a77.exe
Size

267KB
MD5

ca543a3a645d3f76aa25727b92b8596d
SHA1

93f60ad73571b2a7579e2ee888bea21e7974c47a
SHA256

b9ca3de39b6ff253a9683c6f32666f4882a275e4e7a9df69f4f2787373f88a77
SHA512

7c1cfe5218e22d325701d91dedb464964a3cbef5db04bf207854c24107dada6e216fb1f046d4e20de53387eebfcf575d51ae96ca58d9554c5e47247d636f949a
SSDEEP

3072:WdvzDqxs8ORikgogWfiuRXd3YmSffdTKXNXANewGBvskX1pWA/s8sds:WFzDqa86hV6uRRqX1evPlwAEds

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/2748-34-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral1/memory/2748-31-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral1/memory/2748-29-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral1/memory/2748-36-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral1/memory/2748-35-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def

Executes dropped EXE 1 IoCs

pid	Process
1600	HiPatchService.exe

Loads dropped DLL 1 IoCs

pid	Process
1976	b9ca3de39b6ff253a9683c6f32666f4882a275e4e7a9df69f4f2787373f88a77.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-1-5-21-1506706701-1246725540-2219210854-1000\Software\Microsoft\Windows\CurrentVersion\Run\HiPatch = "C:\\Users\\Admin\\AppData\\Roaming\\HiPatch\\HiPatchService.exe"	b9ca3de39b6ff253a9683c6f32666f4882a275e4e7a9df69f4f2787373f88a77.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1600 set thread context of 2748	1600	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	b9ca3de39b6ff253a9683c6f32666f4882a275e4e7a9df69f4f2787373f88a77.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	RegAsm.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
2748	RegAsm.exe
2748	RegAsm.exe
2748	RegAsm.exe
2748	RegAsm.exe
2748	RegAsm.exe
2748	RegAsm.exe
2748	RegAsm.exe
2748	RegAsm.exe
2748	RegAsm.exe
2748	RegAsm.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1976 wrote to memory of 1600	1976	b9ca3de39b6ff253a9683c6f32666f4882a275e4e7a9df69f4f2787373f88a77.exe	30
PID 1976 wrote to memory of 1600	1976	b9ca3de39b6ff253a9683c6f32666f4882a275e4e7a9df69f4f2787373f88a77.exe	30
PID 1976 wrote to memory of 1600	1976	b9ca3de39b6ff253a9683c6f32666f4882a275e4e7a9df69f4f2787373f88a77.exe	30
PID 1976 wrote to memory of 1600	1976	b9ca3de39b6ff253a9683c6f32666f4882a275e4e7a9df69f4f2787373f88a77.exe	30
PID 1976 wrote to memory of 1600	1976	b9ca3de39b6ff253a9683c6f32666f4882a275e4e7a9df69f4f2787373f88a77.exe	30
PID 1976 wrote to memory of 1600	1976	b9ca3de39b6ff253a9683c6f32666f4882a275e4e7a9df69f4f2787373f88a77.exe	30
PID 1976 wrote to memory of 1600	1976	b9ca3de39b6ff253a9683c6f32666f4882a275e4e7a9df69f4f2787373f88a77.exe	30
PID 1976 wrote to memory of 2944	1976	b9ca3de39b6ff253a9683c6f32666f4882a275e4e7a9df69f4f2787373f88a77.exe	31
PID 1976 wrote to memory of 2944	1976	b9ca3de39b6ff253a9683c6f32666f4882a275e4e7a9df69f4f2787373f88a77.exe	31
PID 1976 wrote to memory of 2944	1976	b9ca3de39b6ff253a9683c6f32666f4882a275e4e7a9df69f4f2787373f88a77.exe	31
PID 1976 wrote to memory of 2944	1976	b9ca3de39b6ff253a9683c6f32666f4882a275e4e7a9df69f4f2787373f88a77.exe	31
PID 1976 wrote to memory of 2944	1976	b9ca3de39b6ff253a9683c6f32666f4882a275e4e7a9df69f4f2787373f88a77.exe	31
PID 1976 wrote to memory of 2944	1976	b9ca3de39b6ff253a9683c6f32666f4882a275e4e7a9df69f4f2787373f88a77.exe	31
PID 1976 wrote to memory of 2944	1976	b9ca3de39b6ff253a9683c6f32666f4882a275e4e7a9df69f4f2787373f88a77.exe	31
PID 1600 wrote to memory of 2748	1600	HiPatchService.exe	33
PID 1600 wrote to memory of 2748	1600	HiPatchService.exe	33
PID 1600 wrote to memory of 2748	1600	HiPatchService.exe	33
PID 1600 wrote to memory of 2748	1600	HiPatchService.exe	33
PID 1600 wrote to memory of 2748	1600	HiPatchService.exe	33
PID 1600 wrote to memory of 2748	1600	HiPatchService.exe	33
PID 1600 wrote to memory of 2748	1600	HiPatchService.exe	33
PID 1600 wrote to memory of 2748	1600	HiPatchService.exe	33
PID 1600 wrote to memory of 2748	1600	HiPatchService.exe	33
PID 1600 wrote to memory of 2748	1600	HiPatchService.exe	33
PID 1600 wrote to memory of 2748	1600	HiPatchService.exe	33
PID 1600 wrote to memory of 2748	1600	HiPatchService.exe	33

C:\Users\Admin\AppData\Local\Temp\b9ca3de39b6ff253a9683c6f32666f4882a275e4e7a9df69f4f2787373f88a77.exe
"C:\Users\Admin\AppData\Local\Temp\b9ca3de39b6ff253a9683c6f32666f4882a275e4e7a9df69f4f2787373f88a77.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1976
- 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:1600
- - 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:2748
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Roaming\HiPatch\HiPatchService.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2944

C:\Windows\system32\wbem\WmiApSrv.exe
C:\Windows\system32\wbem\WmiApSrv.exe
1⤵
PID:1896

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

Filesize
267KB

MD5
8c1b5a0f226bb21c91cd296d973fa35a

SHA1
b81c0f030564576e03d594ddada0ca52a9a12102

SHA256
2cf73aeba9bffb8f1d9fbe70e0036ca1a6246d654f884ee6b0f9a9f0663f3c42

SHA512
bd587aebe21554ab736023327f78c9af2ec37ab9edaeda3650421ce6fe5478e44555448f0696b9853c8602de39baf0ed760152f0adce2d1e7bfdc85d1809aaca

Download Submit
memory/1600-37-0x0000000073F70000-0x000000007465E000-memory.dmp

Filesize
6.9MB

Download
memory/1600-23-0x0000000000040000-0x0000000000086000-memory.dmp

Filesize
280KB

Download
memory/1600-22-0x0000000073F70000-0x000000007465E000-memory.dmp

Filesize
6.9MB

Download
memory/1976-24-0x0000000073F70000-0x000000007465E000-memory.dmp

Filesize
6.9MB

Download
memory/1976-3-0x0000000073F70000-0x000000007465E000-memory.dmp

Filesize
6.9MB

Download
memory/1976-2-0x0000000000210000-0x000000000021A000-memory.dmp

Filesize
40KB

Download
memory/1976-0-0x0000000073F7E000-0x0000000073F7F000-memory.dmp

Filesize
4KB

Download
memory/1976-1-0x0000000000C50000-0x0000000000C96000-memory.dmp

Filesize
280KB

Download
memory/2748-25-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2748-33-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2748-34-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2748-31-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2748-29-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2748-27-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2748-36-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2748-35-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads