asyncrat | aa69530a4b653671c19a51611e198923bde7e05d88a36636cefb0c1c4151e219

Analysis

max time kernel
119s
max time network
28s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
19-08-2024 14:54

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General

Target

b4418aa1113856455c82ff2d515ff760N.exe
Size

267KB
MD5

b4418aa1113856455c82ff2d515ff760
SHA1

6ae6d4694267f7bf8b2446a57070daa51e15db39
SHA256

aa69530a4b653671c19a51611e198923bde7e05d88a36636cefb0c1c4151e219
SHA512

7cfabc3a1b1f0db8aa522bccb4cb240800806c6a8db26528ad4c000e9c32570aefbad5a1eca71178a0a3f93245112d42c89859c17467172390529d01c60ff02b
SSDEEP

3072:WdvzDqxs8ORikgogWfiuRXd3YmSffdTKXNXANewGBvskX1pWA/u:WFzDqa86hV6uRRqX1evPlwAG

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

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/2648-33-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral1/memory/2648-38-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral1/memory/2648-37-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral1/memory/2648-31-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral1/memory/2648-36-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def

Executes dropped EXE 1 IoCs

pid	Process
2872	HiPatchService.exe

Loads dropped DLL 1 IoCs

pid	Process
2960	b4418aa1113856455c82ff2d515ff760N.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-1-5-21-2212144002-1172735686-1556890956-1000\Software\Microsoft\Windows\CurrentVersion\Run\HiPatch = "C:\\Users\\Admin\\AppData\\Roaming\\HiPatch\\HiPatchService.exe"	b4418aa1113856455c82ff2d515ff760N.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2872 set thread context of 2648	2872	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	b4418aa1113856455c82ff2d515ff760N.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 12 IoCs

pid	Process
2872	HiPatchService.exe
2872	HiPatchService.exe
2648	RegAsm.exe
2648	RegAsm.exe
2648	RegAsm.exe
2648	RegAsm.exe
2648	RegAsm.exe
2648	RegAsm.exe
2648	RegAsm.exe
2648	RegAsm.exe
2648	RegAsm.exe
2648	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2872	HiPatchService.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 2960 wrote to memory of 2872	2960	b4418aa1113856455c82ff2d515ff760N.exe	30
PID 2960 wrote to memory of 2872	2960	b4418aa1113856455c82ff2d515ff760N.exe	30
PID 2960 wrote to memory of 2872	2960	b4418aa1113856455c82ff2d515ff760N.exe	30
PID 2960 wrote to memory of 2872	2960	b4418aa1113856455c82ff2d515ff760N.exe	30
PID 2960 wrote to memory of 2872	2960	b4418aa1113856455c82ff2d515ff760N.exe	30
PID 2960 wrote to memory of 2872	2960	b4418aa1113856455c82ff2d515ff760N.exe	30
PID 2960 wrote to memory of 2872	2960	b4418aa1113856455c82ff2d515ff760N.exe	30
PID 2960 wrote to memory of 2904	2960	b4418aa1113856455c82ff2d515ff760N.exe	31
PID 2960 wrote to memory of 2904	2960	b4418aa1113856455c82ff2d515ff760N.exe	31
PID 2960 wrote to memory of 2904	2960	b4418aa1113856455c82ff2d515ff760N.exe	31
PID 2960 wrote to memory of 2904	2960	b4418aa1113856455c82ff2d515ff760N.exe	31
PID 2960 wrote to memory of 2904	2960	b4418aa1113856455c82ff2d515ff760N.exe	31
PID 2960 wrote to memory of 2904	2960	b4418aa1113856455c82ff2d515ff760N.exe	31
PID 2960 wrote to memory of 2904	2960	b4418aa1113856455c82ff2d515ff760N.exe	31
PID 2872 wrote to memory of 2636	2872	HiPatchService.exe	33
PID 2872 wrote to memory of 2636	2872	HiPatchService.exe	33
PID 2872 wrote to memory of 2636	2872	HiPatchService.exe	33
PID 2872 wrote to memory of 2636	2872	HiPatchService.exe	33
PID 2872 wrote to memory of 2636	2872	HiPatchService.exe	33
PID 2872 wrote to memory of 2636	2872	HiPatchService.exe	33
PID 2872 wrote to memory of 2636	2872	HiPatchService.exe	33
PID 2872 wrote to memory of 2648	2872	HiPatchService.exe	34
PID 2872 wrote to memory of 2648	2872	HiPatchService.exe	34
PID 2872 wrote to memory of 2648	2872	HiPatchService.exe	34
PID 2872 wrote to memory of 2648	2872	HiPatchService.exe	34
PID 2872 wrote to memory of 2648	2872	HiPatchService.exe	34
PID 2872 wrote to memory of 2648	2872	HiPatchService.exe	34
PID 2872 wrote to memory of 2648	2872	HiPatchService.exe	34
PID 2872 wrote to memory of 2648	2872	HiPatchService.exe	34
PID 2872 wrote to memory of 2648	2872	HiPatchService.exe	34
PID 2872 wrote to memory of 2648	2872	HiPatchService.exe	34
PID 2872 wrote to memory of 2648	2872	HiPatchService.exe	34
PID 2872 wrote to memory of 2648	2872	HiPatchService.exe	34

C:\Users\Admin\AppData\Local\Temp\b4418aa1113856455c82ff2d515ff760N.exe
"C:\Users\Admin\AppData\Local\Temp\b4418aa1113856455c82ff2d515ff760N.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2960
- 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:2872
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
    3⤵
    PID:2636
- - 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:2648
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Roaming\HiPatch\HiPatchService.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2904

C:\Windows\system32\wbem\WmiApSrv.exe
C:\Windows\system32\wbem\WmiApSrv.exe
1⤵
PID:344

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
49998b091d3b7f8e5e3abdffc7796201

SHA1
76707c52d6e7801f86f0f6df3e0bd343711cb231

SHA256
baccc1d7557c05bd5a0713e90a25fac34856e742d57e81eb574a85186940a9f1

SHA512
b34680d4115d5d0170f4e599014177aa80d0275e9b3364bd55ee8b30c0eb10033e7d85ea555fc68aad665f7372e75507e4d63b02f92f6b9ca212a2a0d3cb1bc9

Download Submit
memory/2648-31-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2648-35-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2648-27-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2648-29-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2648-36-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2648-37-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2648-38-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2648-33-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2872-22-0x0000000000CC0000-0x0000000000D06000-memory.dmp

Filesize
280KB

Download
memory/2872-24-0x0000000074850000-0x0000000074F3E000-memory.dmp

Filesize
6.9MB

Download
memory/2872-39-0x0000000074850000-0x0000000074F3E000-memory.dmp

Filesize
6.9MB

Download
memory/2960-25-0x0000000074850000-0x0000000074F3E000-memory.dmp

Filesize
6.9MB

Download
memory/2960-23-0x0000000074850000-0x0000000074F3E000-memory.dmp

Filesize
6.9MB

Download
memory/2960-3-0x0000000074850000-0x0000000074F3E000-memory.dmp

Filesize
6.9MB

Download
memory/2960-0-0x000000007485E000-0x000000007485F000-memory.dmp

Filesize
4KB

Download
memory/2960-1-0x00000000013A0000-0x00000000013E6000-memory.dmp

Filesize
280KB

Download
memory/2960-2-0x0000000000240000-0x000000000024A000-memory.dmp

Filesize
40KB

Download
memory/2960-9-0x000000007485E000-0x000000007485F000-memory.dmp

Filesize
4KB

Download