asyncrat | f47794765c365e7724d229da871f381eb461bd084deba063a18c8ca58b994450

Analysis

max time kernel
118s
max time network
120s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
24-07-2024 20:56

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General

Target

0969e21e59f59df0800c57a7afdd7a50N.exe
Size

266KB
MD5

0969e21e59f59df0800c57a7afdd7a50
SHA1

d1cb11da5e5daaa764af3605dc93c7af27658c12
SHA256

f47794765c365e7724d229da871f381eb461bd084deba063a18c8ca58b994450
SHA512

c55aab17b4e8732fbb89027f0559c305d3ca574fea89c770b99fe6336bcc648ae2a38225adf649f0cd36811a86686bb1578241568dde7f30f4cb0d45e8905c5d
SSDEEP

3072:WdvzDqxs8ORikgogWfiuRXd3YmSffdTKXNXANewGBvskX1pWA/sT:WFzDqa86hV6uRRqX1evPlwAET

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/2740-31-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral1/memory/2740-34-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral1/memory/2740-36-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral1/memory/2740-35-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral1/memory/2740-29-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def

Executes dropped EXE 1 IoCs

pid	Process
1712	HiPatchService.exe

Loads dropped DLL 1 IoCs

pid	Process
784	0969e21e59f59df0800c57a7afdd7a50N.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-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Windows\CurrentVersion\Run\HiPatch = "C:\\Users\\Admin\\AppData\\Roaming\\HiPatch\\HiPatchService.exe"	0969e21e59f59df0800c57a7afdd7a50N.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1712 set thread context of 2740	1712	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	0969e21e59f59df0800c57a7afdd7a50N.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 12 IoCs

pid	Process
1712	HiPatchService.exe
1712	HiPatchService.exe
2740	RegAsm.exe
2740	RegAsm.exe
2740	RegAsm.exe
2740	RegAsm.exe
2740	RegAsm.exe
2740	RegAsm.exe
2740	RegAsm.exe
2740	RegAsm.exe
2740	RegAsm.exe
2740	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1712	HiPatchService.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 784 wrote to memory of 1712	784	0969e21e59f59df0800c57a7afdd7a50N.exe	31
PID 784 wrote to memory of 1712	784	0969e21e59f59df0800c57a7afdd7a50N.exe	31
PID 784 wrote to memory of 1712	784	0969e21e59f59df0800c57a7afdd7a50N.exe	31
PID 784 wrote to memory of 1712	784	0969e21e59f59df0800c57a7afdd7a50N.exe	31
PID 784 wrote to memory of 1712	784	0969e21e59f59df0800c57a7afdd7a50N.exe	31
PID 784 wrote to memory of 1712	784	0969e21e59f59df0800c57a7afdd7a50N.exe	31
PID 784 wrote to memory of 1712	784	0969e21e59f59df0800c57a7afdd7a50N.exe	31
PID 784 wrote to memory of 2652	784	0969e21e59f59df0800c57a7afdd7a50N.exe	32
PID 784 wrote to memory of 2652	784	0969e21e59f59df0800c57a7afdd7a50N.exe	32
PID 784 wrote to memory of 2652	784	0969e21e59f59df0800c57a7afdd7a50N.exe	32
PID 784 wrote to memory of 2652	784	0969e21e59f59df0800c57a7afdd7a50N.exe	32
PID 784 wrote to memory of 2652	784	0969e21e59f59df0800c57a7afdd7a50N.exe	32
PID 784 wrote to memory of 2652	784	0969e21e59f59df0800c57a7afdd7a50N.exe	32
PID 784 wrote to memory of 2652	784	0969e21e59f59df0800c57a7afdd7a50N.exe	32
PID 1712 wrote to memory of 2552	1712	HiPatchService.exe	34
PID 1712 wrote to memory of 2552	1712	HiPatchService.exe	34
PID 1712 wrote to memory of 2552	1712	HiPatchService.exe	34
PID 1712 wrote to memory of 2552	1712	HiPatchService.exe	34
PID 1712 wrote to memory of 2552	1712	HiPatchService.exe	34
PID 1712 wrote to memory of 2552	1712	HiPatchService.exe	34
PID 1712 wrote to memory of 2552	1712	HiPatchService.exe	34
PID 1712 wrote to memory of 2740	1712	HiPatchService.exe	35
PID 1712 wrote to memory of 2740	1712	HiPatchService.exe	35
PID 1712 wrote to memory of 2740	1712	HiPatchService.exe	35
PID 1712 wrote to memory of 2740	1712	HiPatchService.exe	35
PID 1712 wrote to memory of 2740	1712	HiPatchService.exe	35
PID 1712 wrote to memory of 2740	1712	HiPatchService.exe	35
PID 1712 wrote to memory of 2740	1712	HiPatchService.exe	35
PID 1712 wrote to memory of 2740	1712	HiPatchService.exe	35
PID 1712 wrote to memory of 2740	1712	HiPatchService.exe	35
PID 1712 wrote to memory of 2740	1712	HiPatchService.exe	35
PID 1712 wrote to memory of 2740	1712	HiPatchService.exe	35
PID 1712 wrote to memory of 2740	1712	HiPatchService.exe	35

C:\Users\Admin\AppData\Local\Temp\0969e21e59f59df0800c57a7afdd7a50N.exe
"C:\Users\Admin\AppData\Local\Temp\0969e21e59f59df0800c57a7afdd7a50N.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:784
- 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:1712
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
    3⤵
    PID:2552
- - 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:2740
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Roaming\HiPatch\HiPatchService.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2652

C:\Windows\system32\wbem\WmiApSrv.exe
C:\Windows\system32\wbem\WmiApSrv.exe
1⤵
PID:2620

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
266KB

MD5
301ff61c2a42c19ed6774c5efdf15f96

SHA1
4d21b192b1c0c3a1c85c7ca22771158da21628c0

SHA256
29c6d849d7c67dfb73e73ed411f07a1e959c322f819c864b493423e1e8162162

SHA512
607511ee6e318ea311fcc4a96826250d2b6334bcb1b0f01d89d1aafd8ae84c726a670a142154684d03a0f9105a973a24afbe779c74be7d562b6cb4f23ac0a7c7

Download Submit
memory/784-23-0x0000000073F30000-0x000000007461E000-memory.dmp

Filesize
6.9MB

Download
memory/784-2-0x00000000002C0000-0x00000000002CA000-memory.dmp

Filesize
40KB

Download
memory/784-1-0x0000000000D60000-0x0000000000DA6000-memory.dmp

Filesize
280KB

Download
memory/784-0-0x0000000073F3E000-0x0000000073F3F000-memory.dmp

Filesize
4KB

Download
memory/784-3-0x0000000073F30000-0x000000007461E000-memory.dmp

Filesize
6.9MB

Download
memory/1712-37-0x0000000073F30000-0x000000007461E000-memory.dmp

Filesize
6.9MB

Download
memory/1712-21-0x00000000010B0000-0x00000000010F6000-memory.dmp

Filesize
280KB

Download
memory/1712-22-0x0000000073F30000-0x000000007461E000-memory.dmp

Filesize
6.9MB

Download
memory/2740-31-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2740-36-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2740-35-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2740-33-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2740-29-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2740-27-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2740-25-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2740-34-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download