asyncrat | df025008bab8a9d1b780276526007d60abaafb894af2cca82bc633c715945ec5

Analysis

max time kernel
150s
max time network
26s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
22/03/2025, 06:10

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General

Target

4478036b24730075b2da4b9c1a601533.exe
Size

272KB
MD5

4478036b24730075b2da4b9c1a601533
SHA1

34dfa5ee56ed334f2ad46e2dfdc024498d27dc56
SHA256

d233b1e7a55864b83d22ab61d24b66a4d68fe503efe6b568bd058833f146f3f9
SHA512

ae887bfc70049ffc72fb250e50f5f1ea6825ce4765c1174a073e804fb1b21fd4032d30e28ff52e49dc61e070aa98ef393646f8824a10f6946eb40566c6cdd7ef
SSDEEP

3072:WdvzDqxs8ORikgogWfiuRXd3YmSffdTKXNXANewGBvskX1pWA/s8sdT3:WFzDqa86hV6uRRqX1evPlwAEd7

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
behavioral13/memory/2652-31-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral13/memory/2652-36-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral13/memory/2652-35-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral13/memory/2652-33-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral13/memory/2652-37-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def

Executes dropped EXE 1 IoCs

pid	Process
2820	HiPatchService.exe

Loads dropped DLL 1 IoCs

pid	Process
2544	4478036b24730075b2da4b9c1a601533.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-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\HiPatch = "C:\\Users\\Admin\\AppData\\Roaming\\HiPatch\\HiPatchService.exe"	4478036b24730075b2da4b9c1a601533.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2820 set thread context of 2652	2820	HiPatchService.exe	32

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	4478036b24730075b2da4b9c1a601533.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
2652	RegAsm.exe
2652	RegAsm.exe
2652	RegAsm.exe
2652	RegAsm.exe
2652	RegAsm.exe
2652	RegAsm.exe
2652	RegAsm.exe
2652	RegAsm.exe
2652	RegAsm.exe
2652	RegAsm.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2544 wrote to memory of 2820	2544	4478036b24730075b2da4b9c1a601533.exe	29
PID 2544 wrote to memory of 2820	2544	4478036b24730075b2da4b9c1a601533.exe	29
PID 2544 wrote to memory of 2820	2544	4478036b24730075b2da4b9c1a601533.exe	29
PID 2544 wrote to memory of 2820	2544	4478036b24730075b2da4b9c1a601533.exe	29
PID 2544 wrote to memory of 2820	2544	4478036b24730075b2da4b9c1a601533.exe	29
PID 2544 wrote to memory of 2820	2544	4478036b24730075b2da4b9c1a601533.exe	29
PID 2544 wrote to memory of 2820	2544	4478036b24730075b2da4b9c1a601533.exe	29
PID 2544 wrote to memory of 2948	2544	4478036b24730075b2da4b9c1a601533.exe	30
PID 2544 wrote to memory of 2948	2544	4478036b24730075b2da4b9c1a601533.exe	30
PID 2544 wrote to memory of 2948	2544	4478036b24730075b2da4b9c1a601533.exe	30
PID 2544 wrote to memory of 2948	2544	4478036b24730075b2da4b9c1a601533.exe	30
PID 2544 wrote to memory of 2948	2544	4478036b24730075b2da4b9c1a601533.exe	30
PID 2544 wrote to memory of 2948	2544	4478036b24730075b2da4b9c1a601533.exe	30
PID 2544 wrote to memory of 2948	2544	4478036b24730075b2da4b9c1a601533.exe	30
PID 2820 wrote to memory of 2652	2820	HiPatchService.exe	32
PID 2820 wrote to memory of 2652	2820	HiPatchService.exe	32
PID 2820 wrote to memory of 2652	2820	HiPatchService.exe	32
PID 2820 wrote to memory of 2652	2820	HiPatchService.exe	32
PID 2820 wrote to memory of 2652	2820	HiPatchService.exe	32
PID 2820 wrote to memory of 2652	2820	HiPatchService.exe	32
PID 2820 wrote to memory of 2652	2820	HiPatchService.exe	32
PID 2820 wrote to memory of 2652	2820	HiPatchService.exe	32
PID 2820 wrote to memory of 2652	2820	HiPatchService.exe	32
PID 2820 wrote to memory of 2652	2820	HiPatchService.exe	32
PID 2820 wrote to memory of 2652	2820	HiPatchService.exe	32
PID 2820 wrote to memory of 2652	2820	HiPatchService.exe	32

C:\Users\Admin\AppData\Local\Temp\4478036b24730075b2da4b9c1a601533.exe
"C:\Users\Admin\AppData\Local\Temp\4478036b24730075b2da4b9c1a601533.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2544
- 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:2820
- - 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:2652
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Roaming\HiPatch\HiPatchService.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2948

C:\Windows\system32\wbem\WmiApSrv.exe
C:\Windows\system32\wbem\WmiApSrv.exe
1⤵
PID:2104

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
272KB

MD5
7291d0c5a6beb9333b6e64e2e011639a

SHA1
a0fa65c3e759fc8ae161fb1f868c4d1d2358e724

SHA256
6ddde072f3e91e30fe3f3774c58d1a377b53b0783d4a4e9d6aadd0a01ec44dbc

SHA512
c1257d710d3b72a03880c13073d20b1ed83ddf73daf5baa84a888301063d74e1439bfc34d8e187e71f70ff7e3cf67c1967b56aa2b37dc1a692ab5572045b7bb4

Download Submit
memory/2544-23-0x0000000073C40000-0x000000007432E000-memory.dmp

Filesize
6.9MB

Download
memory/2544-0-0x0000000073C4E000-0x0000000073C4F000-memory.dmp

Filesize
4KB

Download
memory/2544-9-0x0000000073C4E000-0x0000000073C4F000-memory.dmp

Filesize
4KB

Download
memory/2544-2-0x0000000000660000-0x000000000066A000-memory.dmp

Filesize
40KB

Download
memory/2544-1-0x0000000000CB0000-0x0000000000CF6000-memory.dmp

Filesize
280KB

Download
memory/2544-3-0x0000000073C40000-0x000000007432E000-memory.dmp

Filesize
6.9MB

Download
memory/2652-33-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2652-31-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2652-36-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2652-35-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2652-34-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2652-29-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2652-26-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2652-37-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2820-25-0x0000000073C40000-0x000000007432E000-memory.dmp

Filesize
6.9MB

Download
memory/2820-38-0x0000000073C40000-0x000000007432E000-memory.dmp

Filesize
6.9MB

Download
memory/2820-22-0x00000000012A0000-0x00000000012E6000-memory.dmp

Filesize
280KB

Download