asyncrat | e2d1f8e17561974c469215fdc3bc823ef0c3e73dc7408b2dbdab9965483a51e7

Analysis

max time kernel
118s
max time network
25s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
28-07-2024 05:18

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General

Target

569ab084e9eff9ae8176392b2a4ada70N.exe
Size

267KB
MD5

569ab084e9eff9ae8176392b2a4ada70
SHA1

9394b359ee5b5698c44a6a586e3d05e2e4e28697
SHA256

e2d1f8e17561974c469215fdc3bc823ef0c3e73dc7408b2dbdab9965483a51e7
SHA512

1d10d23c05af85078562480a66ff4f1920b302f9f1b12f56e7087d2b044b0b63977b786ea57a32c9c71684efefb751499775859651330072028f738dc0b90e09
SSDEEP

3072:WdvzDqxs8ORikgogWfiuRXd3YmSffdTKXNXANewGBvskX1pWA/s8Wv:WFzDqa86hV6uRRqX1evPlwAEr

Score

10^/10

asyncrat discovery persistence rat

Malware Config

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/3000-29-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral1/memory/3000-34-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral1/memory/3000-36-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral1/memory/3000-35-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral1/memory/3000-31-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def

Executes dropped EXE 1 IoCs

pid	Process
2916	HiPatchService.exe

Loads dropped DLL 1 IoCs

pid	Process
2272	569ab084e9eff9ae8176392b2a4ada70N.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-1-5-21-2958949473-3205530200-1453100116-1000\Software\Microsoft\Windows\CurrentVersion\Run\HiPatch = "C:\\Users\\Admin\\AppData\\Roaming\\HiPatch\\HiPatchService.exe"	569ab084e9eff9ae8176392b2a4ada70N.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2916 set thread context of 3000	2916	HiPatchService.exe	34

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 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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	569ab084e9eff9ae8176392b2a4ada70N.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

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2772	timeout.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
3000	RegAsm.exe
3000	RegAsm.exe
3000	RegAsm.exe
3000	RegAsm.exe
3000	RegAsm.exe
3000	RegAsm.exe
3000	RegAsm.exe
3000	RegAsm.exe
3000	RegAsm.exe
3000	RegAsm.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2272 wrote to memory of 2916	2272	569ab084e9eff9ae8176392b2a4ada70N.exe	30
PID 2272 wrote to memory of 2916	2272	569ab084e9eff9ae8176392b2a4ada70N.exe	30
PID 2272 wrote to memory of 2916	2272	569ab084e9eff9ae8176392b2a4ada70N.exe	30
PID 2272 wrote to memory of 2916	2272	569ab084e9eff9ae8176392b2a4ada70N.exe	30
PID 2272 wrote to memory of 2916	2272	569ab084e9eff9ae8176392b2a4ada70N.exe	30
PID 2272 wrote to memory of 2916	2272	569ab084e9eff9ae8176392b2a4ada70N.exe	30
PID 2272 wrote to memory of 2916	2272	569ab084e9eff9ae8176392b2a4ada70N.exe	30
PID 2272 wrote to memory of 2716	2272	569ab084e9eff9ae8176392b2a4ada70N.exe	31
PID 2272 wrote to memory of 2716	2272	569ab084e9eff9ae8176392b2a4ada70N.exe	31
PID 2272 wrote to memory of 2716	2272	569ab084e9eff9ae8176392b2a4ada70N.exe	31
PID 2272 wrote to memory of 2716	2272	569ab084e9eff9ae8176392b2a4ada70N.exe	31
PID 2272 wrote to memory of 2716	2272	569ab084e9eff9ae8176392b2a4ada70N.exe	31
PID 2272 wrote to memory of 2716	2272	569ab084e9eff9ae8176392b2a4ada70N.exe	31
PID 2272 wrote to memory of 2716	2272	569ab084e9eff9ae8176392b2a4ada70N.exe	31
PID 2716 wrote to memory of 2772	2716	cmd.exe	33
PID 2716 wrote to memory of 2772	2716	cmd.exe	33
PID 2716 wrote to memory of 2772	2716	cmd.exe	33
PID 2716 wrote to memory of 2772	2716	cmd.exe	33
PID 2916 wrote to memory of 3000	2916	HiPatchService.exe	34
PID 2916 wrote to memory of 3000	2916	HiPatchService.exe	34
PID 2916 wrote to memory of 3000	2916	HiPatchService.exe	34
PID 2916 wrote to memory of 3000	2916	HiPatchService.exe	34
PID 2916 wrote to memory of 3000	2916	HiPatchService.exe	34
PID 2916 wrote to memory of 3000	2916	HiPatchService.exe	34
PID 2916 wrote to memory of 3000	2916	HiPatchService.exe	34
PID 2916 wrote to memory of 3000	2916	HiPatchService.exe	34
PID 2916 wrote to memory of 3000	2916	HiPatchService.exe	34
PID 2916 wrote to memory of 3000	2916	HiPatchService.exe	34
PID 2916 wrote to memory of 3000	2916	HiPatchService.exe	34
PID 2916 wrote to memory of 3000	2916	HiPatchService.exe	34

C:\Users\Admin\AppData\Local\Temp\569ab084e9eff9ae8176392b2a4ada70N.exe
"C:\Users\Admin\AppData\Local\Temp\569ab084e9eff9ae8176392b2a4ada70N.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2272
- 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:2916
- - 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:3000
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Roaming\HiPatch\HiPatchService.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2716
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 180
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2772

C:\Windows\system32\wbem\WmiApSrv.exe
C:\Windows\system32\wbem\WmiApSrv.exe
1⤵
PID:2428

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

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
2da3a935eb7db052fdee5847eca870e2

SHA1
c089fe9dd704fb671afa14ce906541f9ab28b96a

SHA256
f4b1e9da588917d8660f4a55b7d90dab396e39941aa7bef008c15d77c080549c

SHA512
7d8a5d51501c35f407225cb195c8d8660ddf99a1e52550d0a80f26d00bfb3c5bc266e8c8b00a722eb9fbfde1de64b37b3a310c2e14c9b18ae29e70e82d6f1eff

Download Submit
memory/2272-24-0x00000000749F0000-0x00000000750DE000-memory.dmp

Filesize
6.9MB

Download
memory/2272-2-0x0000000000240000-0x000000000024A000-memory.dmp

Filesize
40KB

Download
memory/2272-1-0x00000000013E0000-0x0000000001426000-memory.dmp

Filesize
280KB

Download
memory/2272-0-0x00000000749FE000-0x00000000749FF000-memory.dmp

Filesize
4KB

Download
memory/2272-3-0x00000000749F0000-0x00000000750DE000-memory.dmp

Filesize
6.9MB

Download
memory/2916-37-0x00000000749F0000-0x00000000750DE000-memory.dmp

Filesize
6.9MB

Download
memory/2916-21-0x0000000001060000-0x00000000010A6000-memory.dmp

Filesize
280KB

Download
memory/2916-23-0x00000000749F0000-0x00000000750DE000-memory.dmp

Filesize
6.9MB

Download
memory/3000-25-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/3000-34-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/3000-36-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/3000-35-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/3000-33-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/3000-31-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/3000-27-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/3000-29-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download