asyncrat | bec2caf44369e10717bc1024c82dbb07335141e0cf5e8761b88614323ebc6b35

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
04-01-2025 00:43

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General

Target

bec2caf44369e10717bc1024c82dbb07335141e0cf5e8761b88614323ebc6b35N.exe
Size

271KB
MD5

5fc2787df146f4ea832f2ca787bc4550
SHA1

e2bb26b86e5701d87457bd908d6c7e2454eb6f86
SHA256

bec2caf44369e10717bc1024c82dbb07335141e0cf5e8761b88614323ebc6b35
SHA512

b2601a0964b50d40fd527ccbfdad29f2fdfa84bd65d07a2d91409a3e53bc72724c26b3589a028faefc8c289b83aca058e7a4f0af7c04dee18a21deaf0bf51196
SSDEEP

3072:WdvzDqxs8ORikgogWfiuRXd3YmSffdTKXNXANewGBvskX1pWA/s8sdU:WFzDqa86hV6uRRqX1evPlwAEdU

Score

10^/10

asyncrat discovery persistence rat

Malware Config

Extracted

Family

asyncrat

Version

0.4.9G

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
Asyncrat family
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/2664-37-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral1/memory/2664-36-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral1/memory/2664-35-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral1/memory/2664-32-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral1/memory/2664-30-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def

Executes dropped EXE 1 IoCs

pid	Process
1724	HiPatchService.exe

Loads dropped DLL 1 IoCs

pid	Process
2912	bec2caf44369e10717bc1024c82dbb07335141e0cf5e8761b88614323ebc6b35N.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-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Windows\CurrentVersion\Run\HiPatch = "C:\\Users\\Admin\\AppData\\Roaming\\HiPatch\\HiPatchService.exe"	bec2caf44369e10717bc1024c82dbb07335141e0cf5e8761b88614323ebc6b35N.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1724 set thread context of 2664	1724	HiPatchService.exe	35

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	bec2caf44369e10717bc1024c82dbb07335141e0cf5e8761b88614323ebc6b35N.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 14 IoCs

pid	Process
1724	HiPatchService.exe
1724	HiPatchService.exe
1724	HiPatchService.exe
1724	HiPatchService.exe
2664	RegAsm.exe
2664	RegAsm.exe
2664	RegAsm.exe
2664	RegAsm.exe
2664	RegAsm.exe
2664	RegAsm.exe
2664	RegAsm.exe
2664	RegAsm.exe
2664	RegAsm.exe
2664	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1724	HiPatchService.exe

Suspicious use of WriteProcessMemory 40 IoCs

description	pid	Process	procid_target
PID 2912 wrote to memory of 1724	2912	bec2caf44369e10717bc1024c82dbb07335141e0cf5e8761b88614323ebc6b35N.exe	28
PID 2912 wrote to memory of 1724	2912	bec2caf44369e10717bc1024c82dbb07335141e0cf5e8761b88614323ebc6b35N.exe	28
PID 2912 wrote to memory of 1724	2912	bec2caf44369e10717bc1024c82dbb07335141e0cf5e8761b88614323ebc6b35N.exe	28
PID 2912 wrote to memory of 1724	2912	bec2caf44369e10717bc1024c82dbb07335141e0cf5e8761b88614323ebc6b35N.exe	28
PID 2912 wrote to memory of 1724	2912	bec2caf44369e10717bc1024c82dbb07335141e0cf5e8761b88614323ebc6b35N.exe	28
PID 2912 wrote to memory of 1724	2912	bec2caf44369e10717bc1024c82dbb07335141e0cf5e8761b88614323ebc6b35N.exe	28
PID 2912 wrote to memory of 1724	2912	bec2caf44369e10717bc1024c82dbb07335141e0cf5e8761b88614323ebc6b35N.exe	28
PID 2912 wrote to memory of 2384	2912	bec2caf44369e10717bc1024c82dbb07335141e0cf5e8761b88614323ebc6b35N.exe	29
PID 2912 wrote to memory of 2384	2912	bec2caf44369e10717bc1024c82dbb07335141e0cf5e8761b88614323ebc6b35N.exe	29
PID 2912 wrote to memory of 2384	2912	bec2caf44369e10717bc1024c82dbb07335141e0cf5e8761b88614323ebc6b35N.exe	29
PID 2912 wrote to memory of 2384	2912	bec2caf44369e10717bc1024c82dbb07335141e0cf5e8761b88614323ebc6b35N.exe	29
PID 2912 wrote to memory of 2384	2912	bec2caf44369e10717bc1024c82dbb07335141e0cf5e8761b88614323ebc6b35N.exe	29
PID 2912 wrote to memory of 2384	2912	bec2caf44369e10717bc1024c82dbb07335141e0cf5e8761b88614323ebc6b35N.exe	29
PID 2912 wrote to memory of 2384	2912	bec2caf44369e10717bc1024c82dbb07335141e0cf5e8761b88614323ebc6b35N.exe	29
PID 1724 wrote to memory of 2588	1724	HiPatchService.exe	33
PID 1724 wrote to memory of 2588	1724	HiPatchService.exe	33
PID 1724 wrote to memory of 2588	1724	HiPatchService.exe	33
PID 1724 wrote to memory of 2588	1724	HiPatchService.exe	33
PID 1724 wrote to memory of 2588	1724	HiPatchService.exe	33
PID 1724 wrote to memory of 2588	1724	HiPatchService.exe	33
PID 1724 wrote to memory of 2588	1724	HiPatchService.exe	33
PID 1724 wrote to memory of 2624	1724	HiPatchService.exe	34
PID 1724 wrote to memory of 2624	1724	HiPatchService.exe	34
PID 1724 wrote to memory of 2624	1724	HiPatchService.exe	34
PID 1724 wrote to memory of 2624	1724	HiPatchService.exe	34
PID 1724 wrote to memory of 2624	1724	HiPatchService.exe	34
PID 1724 wrote to memory of 2624	1724	HiPatchService.exe	34
PID 1724 wrote to memory of 2624	1724	HiPatchService.exe	34
PID 1724 wrote to memory of 2664	1724	HiPatchService.exe	35
PID 1724 wrote to memory of 2664	1724	HiPatchService.exe	35
PID 1724 wrote to memory of 2664	1724	HiPatchService.exe	35
PID 1724 wrote to memory of 2664	1724	HiPatchService.exe	35
PID 1724 wrote to memory of 2664	1724	HiPatchService.exe	35
PID 1724 wrote to memory of 2664	1724	HiPatchService.exe	35
PID 1724 wrote to memory of 2664	1724	HiPatchService.exe	35
PID 1724 wrote to memory of 2664	1724	HiPatchService.exe	35
PID 1724 wrote to memory of 2664	1724	HiPatchService.exe	35
PID 1724 wrote to memory of 2664	1724	HiPatchService.exe	35
PID 1724 wrote to memory of 2664	1724	HiPatchService.exe	35
PID 1724 wrote to memory of 2664	1724	HiPatchService.exe	35

C:\Users\Admin\AppData\Local\Temp\bec2caf44369e10717bc1024c82dbb07335141e0cf5e8761b88614323ebc6b35N.exe
"C:\Users\Admin\AppData\Local\Temp\bec2caf44369e10717bc1024c82dbb07335141e0cf5e8761b88614323ebc6b35N.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2912
- 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:1724
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
    3⤵
    PID:2588
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
    3⤵
    PID:2624
- - 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:2664
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Roaming\HiPatch\HiPatchService.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2384

C:\Windows\system32\wbem\WmiApSrv.exe
C:\Windows\system32\wbem\WmiApSrv.exe
1⤵
PID:3016

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

Filesize
271KB

MD5
f580fa4a820113e8007eaac01dfa71d1

SHA1
12bcbc39d517ef7441be2b2af916f0118f3a68c0

SHA256
364ca900644f15f0359086bce056855184f68e6b63f9bce3e09c91fc566dc912

SHA512
a067adadcb47b7ce1b01df100f3581fef5252735e60b5b907951bc67b79b6842aae9f9bdde3d07108adc75deebe194f1326a0d77cfa6c28340588d73743b1f78

Download Submit
memory/1724-24-0x00000000743F0000-0x0000000074ADE000-memory.dmp

Filesize
6.9MB

Download
memory/1724-21-0x0000000001340000-0x0000000001386000-memory.dmp

Filesize
280KB

Download
memory/1724-38-0x00000000743F0000-0x0000000074ADE000-memory.dmp

Filesize
6.9MB

Download
memory/2664-37-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2664-32-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2664-28-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2664-30-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2664-34-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2664-26-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2664-35-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2664-36-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2912-3-0x00000000743F0000-0x0000000074ADE000-memory.dmp

Filesize
6.9MB

Download
memory/2912-25-0x00000000743F0000-0x0000000074ADE000-memory.dmp

Filesize
6.9MB

Download
memory/2912-22-0x00000000743FE000-0x00000000743FF000-memory.dmp

Filesize
4KB

Download
memory/2912-0-0x00000000743FE000-0x00000000743FF000-memory.dmp

Filesize
4KB

Download
memory/2912-1-0x0000000001200000-0x0000000001246000-memory.dmp

Filesize
280KB

Download
memory/2912-2-0x0000000000390000-0x000000000039A000-memory.dmp

Filesize
40KB

Download