asyncrat | a23fdeddb683f716be744ef3fe9a8ce2c87b02f5e5c1f6c8bdb70881de528304

Analysis

max time kernel
148s
max time network
127s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
22/03/2025, 06:16

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General

Target

cf8d6b1a05c4369c93e7cfd13bf472ffd3ca8206e8ea41e132069d5c485a2a68.exe
Size

273KB
MD5

510563aeed2b9b0098bd9d7555c47e1b
SHA1

98bbc55e43d466ca563aa80eb13ec1a0a822f05f
SHA256

cf8d6b1a05c4369c93e7cfd13bf472ffd3ca8206e8ea41e132069d5c485a2a68
SHA512

6a9740e969f54dbba54373f1ea8f987cacf6846127e888b891d5f69fd0a9ec6056703f4ae498d803c5475a919e9eba128b08300e533131fbfc5fcbc7f7663d78
SSDEEP

3072:WdvzDqxs8ORikgogWfiuRXd3YmSffdTKXNXANewGBvskX1pWA/s8sdTq:WFzDqa86hV6uRRqX1evPlwAEd2

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
behavioral27/memory/2216-37-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral27/memory/2216-36-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral27/memory/2216-35-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral27/memory/2216-32-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral27/memory/2216-31-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def

Executes dropped EXE 1 IoCs

pid	Process
2424	HiPatchService.exe

Loads dropped DLL 1 IoCs

pid	Process
2572	cf8d6b1a05c4369c93e7cfd13bf472ffd3ca8206e8ea41e132069d5c485a2a68.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-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Run\HiPatch = "C:\\Users\\Admin\\AppData\\Roaming\\HiPatch\\HiPatchService.exe"	cf8d6b1a05c4369c93e7cfd13bf472ffd3ca8206e8ea41e132069d5c485a2a68.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2424 set thread context of 2216	2424	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 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	cf8d6b1a05c4369c93e7cfd13bf472ffd3ca8206e8ea41e132069d5c485a2a68.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
2216	RegAsm.exe
2216	RegAsm.exe
2216	RegAsm.exe
2216	RegAsm.exe
2216	RegAsm.exe
2216	RegAsm.exe
2216	RegAsm.exe
2216	RegAsm.exe
2216	RegAsm.exe
2216	RegAsm.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2572 wrote to memory of 2424	2572	cf8d6b1a05c4369c93e7cfd13bf472ffd3ca8206e8ea41e132069d5c485a2a68.exe	31
PID 2572 wrote to memory of 2424	2572	cf8d6b1a05c4369c93e7cfd13bf472ffd3ca8206e8ea41e132069d5c485a2a68.exe	31
PID 2572 wrote to memory of 2424	2572	cf8d6b1a05c4369c93e7cfd13bf472ffd3ca8206e8ea41e132069d5c485a2a68.exe	31
PID 2572 wrote to memory of 2424	2572	cf8d6b1a05c4369c93e7cfd13bf472ffd3ca8206e8ea41e132069d5c485a2a68.exe	31
PID 2572 wrote to memory of 2424	2572	cf8d6b1a05c4369c93e7cfd13bf472ffd3ca8206e8ea41e132069d5c485a2a68.exe	31
PID 2572 wrote to memory of 2424	2572	cf8d6b1a05c4369c93e7cfd13bf472ffd3ca8206e8ea41e132069d5c485a2a68.exe	31
PID 2572 wrote to memory of 2424	2572	cf8d6b1a05c4369c93e7cfd13bf472ffd3ca8206e8ea41e132069d5c485a2a68.exe	31
PID 2572 wrote to memory of 264	2572	cf8d6b1a05c4369c93e7cfd13bf472ffd3ca8206e8ea41e132069d5c485a2a68.exe	32
PID 2572 wrote to memory of 264	2572	cf8d6b1a05c4369c93e7cfd13bf472ffd3ca8206e8ea41e132069d5c485a2a68.exe	32
PID 2572 wrote to memory of 264	2572	cf8d6b1a05c4369c93e7cfd13bf472ffd3ca8206e8ea41e132069d5c485a2a68.exe	32
PID 2572 wrote to memory of 264	2572	cf8d6b1a05c4369c93e7cfd13bf472ffd3ca8206e8ea41e132069d5c485a2a68.exe	32
PID 2572 wrote to memory of 264	2572	cf8d6b1a05c4369c93e7cfd13bf472ffd3ca8206e8ea41e132069d5c485a2a68.exe	32
PID 2572 wrote to memory of 264	2572	cf8d6b1a05c4369c93e7cfd13bf472ffd3ca8206e8ea41e132069d5c485a2a68.exe	32
PID 2572 wrote to memory of 264	2572	cf8d6b1a05c4369c93e7cfd13bf472ffd3ca8206e8ea41e132069d5c485a2a68.exe	32
PID 2424 wrote to memory of 2216	2424	HiPatchService.exe	34
PID 2424 wrote to memory of 2216	2424	HiPatchService.exe	34
PID 2424 wrote to memory of 2216	2424	HiPatchService.exe	34
PID 2424 wrote to memory of 2216	2424	HiPatchService.exe	34
PID 2424 wrote to memory of 2216	2424	HiPatchService.exe	34
PID 2424 wrote to memory of 2216	2424	HiPatchService.exe	34
PID 2424 wrote to memory of 2216	2424	HiPatchService.exe	34
PID 2424 wrote to memory of 2216	2424	HiPatchService.exe	34
PID 2424 wrote to memory of 2216	2424	HiPatchService.exe	34
PID 2424 wrote to memory of 2216	2424	HiPatchService.exe	34
PID 2424 wrote to memory of 2216	2424	HiPatchService.exe	34
PID 2424 wrote to memory of 2216	2424	HiPatchService.exe	34

C:\Users\Admin\AppData\Local\Temp\cf8d6b1a05c4369c93e7cfd13bf472ffd3ca8206e8ea41e132069d5c485a2a68.exe
"C:\Users\Admin\AppData\Local\Temp\cf8d6b1a05c4369c93e7cfd13bf472ffd3ca8206e8ea41e132069d5c485a2a68.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2572
- 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:2424
- - 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:2216
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Roaming\HiPatch\HiPatchService.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  PID:264

C:\Windows\system32\wbem\WmiApSrv.exe
C:\Windows\system32\wbem\WmiApSrv.exe
1⤵
PID:2648

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
273KB

MD5
60d008cd0b8268d737761c62272c5971

SHA1
a4312f87a211fa683b3d2ddd6d4b00d93f5b5040

SHA256
9197565c646b5e2e3d2bdbedbcb6a31245c4de8bddd1116079da4b1cca356987

SHA512
6f982266c511d2cc9c3f02ebc5cb828bce149cb4b096e5091cd6af1f2413d0ff787283b751c3166ea01de2a51320a59e2862b9e6f8e5418c89c1a524793d789f

Download Submit
memory/2216-37-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2216-26-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2216-28-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2216-31-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2216-32-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2216-34-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2216-35-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2216-36-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2424-22-0x00000000013D0000-0x0000000001416000-memory.dmp

Filesize
280KB

Download
memory/2424-23-0x00000000745F0000-0x0000000074CDE000-memory.dmp

Filesize
6.9MB

Download
memory/2424-38-0x00000000745F0000-0x0000000074CDE000-memory.dmp

Filesize
6.9MB

Download
memory/2572-0-0x00000000745FE000-0x00000000745FF000-memory.dmp

Filesize
4KB

Download
memory/2572-24-0x00000000745F0000-0x0000000074CDE000-memory.dmp

Filesize
6.9MB

Download
memory/2572-21-0x00000000745FE000-0x00000000745FF000-memory.dmp

Filesize
4KB

Download
memory/2572-3-0x00000000745F0000-0x0000000074CDE000-memory.dmp

Filesize
6.9MB

Download
memory/2572-2-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/2572-1-0x0000000000930000-0x0000000000976000-memory.dmp

Filesize
280KB

Download