asyncrat | 4fe449d036c64073e840b18ba90368b895159740ee8596476e42125477a70ed7

Analysis

max time kernel
143s
max time network
146s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
02-01-2025 19:10

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General

Target

file.exe
Size

551KB
MD5

acb979b81c2acf8de8925ac44a607e48
SHA1

9be1e0bb48c9343c22f292089e4931f0ce739421
SHA256

4fe449d036c64073e840b18ba90368b895159740ee8596476e42125477a70ed7
SHA512

41b4e517540a5b2f225f967424c2d009cc85bb6d77398507770b1b474a4ebfd2361f695f380f6c9291cf627e693ba057b4a05c55b52f5c7e5780d37af4c15a01
SSDEEP

12288:lxX3xXFdZd9HdkGIwHNLfh2AnX9TML8wHbC708POrXNiH19m9IWIu/rqkR:fzrd9HdkGIONLh2AnXkv8PeUL5WIyp

Score

10^/10

asyncrat default discovery execution rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Default

185.208.158.187:4449

Mutex

tnybaidkzovl

Attributes

delay
10
install
true
install_file
NotepadUpdate.exe
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

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2820	powershell.exe
2432	powershell.exe

Executes dropped EXE 4 IoCs

pid	Process
2776	NotepadUpdate.exe
1712	NotepadUpdate.exe
2116	NotepadUpdate.exe
1764	NotepadUpdate.exe

Loads dropped DLL 10 IoCs

pid	Process
2916	cmd.exe
2776	NotepadUpdate.exe
2776	NotepadUpdate.exe
2776	NotepadUpdate.exe
2776	NotepadUpdate.exe
2776	NotepadUpdate.exe
2776	NotepadUpdate.exe
2116	NotepadUpdate.exe
2116	NotepadUpdate.exe
2116	NotepadUpdate.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2220 set thread context of 2848	2220	file.exe	35
PID 2776 set thread context of 2116	2776	NotepadUpdate.exe	49

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 12 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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	NotepadUpdate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	file.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	file.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	NotepadUpdate.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2740	timeout.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 3 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2884	schtasks.exe
2784	schtasks.exe
2340	schtasks.exe

Suspicious behavior: EnumeratesProcesses 37 IoCs

pid	Process
2220	file.exe
2220	file.exe
2220	file.exe
2220	file.exe
2820	powershell.exe
2848	file.exe
2848	file.exe
2848	file.exe
2776	NotepadUpdate.exe
2432	powershell.exe
2776	NotepadUpdate.exe
2776	NotepadUpdate.exe
2776	NotepadUpdate.exe
2776	NotepadUpdate.exe
2776	NotepadUpdate.exe
2116	NotepadUpdate.exe
2116	NotepadUpdate.exe
2116	NotepadUpdate.exe
2116	NotepadUpdate.exe
2116	NotepadUpdate.exe
2116	NotepadUpdate.exe
2116	NotepadUpdate.exe
2116	NotepadUpdate.exe
2116	NotepadUpdate.exe
2116	NotepadUpdate.exe
2116	NotepadUpdate.exe
2116	NotepadUpdate.exe
2116	NotepadUpdate.exe
2116	NotepadUpdate.exe
2116	NotepadUpdate.exe
2116	NotepadUpdate.exe
2116	NotepadUpdate.exe
2116	NotepadUpdate.exe
2116	NotepadUpdate.exe
2116	NotepadUpdate.exe
2116	NotepadUpdate.exe
2116	NotepadUpdate.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	2220	file.exe
Token: SeDebugPrivilege	2848	file.exe
Token: SeDebugPrivilege	2820	powershell.exe
Token: SeDebugPrivilege	2776	NotepadUpdate.exe
Token: SeDebugPrivilege	2432	powershell.exe
Token: SeDebugPrivilege	2116	NotepadUpdate.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2116	NotepadUpdate.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 2220 wrote to memory of 2820	2220	file.exe	30
PID 2220 wrote to memory of 2820	2220	file.exe	30
PID 2220 wrote to memory of 2820	2220	file.exe	30
PID 2220 wrote to memory of 2820	2220	file.exe	30
PID 2220 wrote to memory of 2884	2220	file.exe	31
PID 2220 wrote to memory of 2884	2220	file.exe	31
PID 2220 wrote to memory of 2884	2220	file.exe	31
PID 2220 wrote to memory of 2884	2220	file.exe	31
PID 2220 wrote to memory of 2600	2220	file.exe	34
PID 2220 wrote to memory of 2600	2220	file.exe	34
PID 2220 wrote to memory of 2600	2220	file.exe	34
PID 2220 wrote to memory of 2600	2220	file.exe	34
PID 2220 wrote to memory of 2848	2220	file.exe	35
PID 2220 wrote to memory of 2848	2220	file.exe	35
PID 2220 wrote to memory of 2848	2220	file.exe	35
PID 2220 wrote to memory of 2848	2220	file.exe	35
PID 2220 wrote to memory of 2848	2220	file.exe	35
PID 2220 wrote to memory of 2848	2220	file.exe	35
PID 2220 wrote to memory of 2848	2220	file.exe	35
PID 2220 wrote to memory of 2848	2220	file.exe	35
PID 2220 wrote to memory of 2848	2220	file.exe	35
PID 2848 wrote to memory of 916	2848	file.exe	36
PID 2848 wrote to memory of 916	2848	file.exe	36
PID 2848 wrote to memory of 916	2848	file.exe	36
PID 2848 wrote to memory of 916	2848	file.exe	36
PID 2848 wrote to memory of 2916	2848	file.exe	38
PID 2848 wrote to memory of 2916	2848	file.exe	38
PID 2848 wrote to memory of 2916	2848	file.exe	38
PID 2848 wrote to memory of 2916	2848	file.exe	38
PID 916 wrote to memory of 2784	916	cmd.exe	40
PID 916 wrote to memory of 2784	916	cmd.exe	40
PID 916 wrote to memory of 2784	916	cmd.exe	40
PID 916 wrote to memory of 2784	916	cmd.exe	40
PID 2916 wrote to memory of 2740	2916	cmd.exe	41
PID 2916 wrote to memory of 2740	2916	cmd.exe	41
PID 2916 wrote to memory of 2740	2916	cmd.exe	41
PID 2916 wrote to memory of 2740	2916	cmd.exe	41
PID 2916 wrote to memory of 2776	2916	cmd.exe	42
PID 2916 wrote to memory of 2776	2916	cmd.exe	42
PID 2916 wrote to memory of 2776	2916	cmd.exe	42
PID 2916 wrote to memory of 2776	2916	cmd.exe	42
PID 2916 wrote to memory of 2776	2916	cmd.exe	42
PID 2916 wrote to memory of 2776	2916	cmd.exe	42
PID 2916 wrote to memory of 2776	2916	cmd.exe	42
PID 2776 wrote to memory of 2432	2776	NotepadUpdate.exe	43
PID 2776 wrote to memory of 2432	2776	NotepadUpdate.exe	43
PID 2776 wrote to memory of 2432	2776	NotepadUpdate.exe	43
PID 2776 wrote to memory of 2432	2776	NotepadUpdate.exe	43
PID 2776 wrote to memory of 2432	2776	NotepadUpdate.exe	43
PID 2776 wrote to memory of 2432	2776	NotepadUpdate.exe	43
PID 2776 wrote to memory of 2432	2776	NotepadUpdate.exe	43
PID 2776 wrote to memory of 2340	2776	NotepadUpdate.exe	45
PID 2776 wrote to memory of 2340	2776	NotepadUpdate.exe	45
PID 2776 wrote to memory of 2340	2776	NotepadUpdate.exe	45
PID 2776 wrote to memory of 2340	2776	NotepadUpdate.exe	45
PID 2776 wrote to memory of 2340	2776	NotepadUpdate.exe	45
PID 2776 wrote to memory of 2340	2776	NotepadUpdate.exe	45
PID 2776 wrote to memory of 2340	2776	NotepadUpdate.exe	45
PID 2776 wrote to memory of 1712	2776	NotepadUpdate.exe	47
PID 2776 wrote to memory of 1712	2776	NotepadUpdate.exe	47
PID 2776 wrote to memory of 1712	2776	NotepadUpdate.exe	47
PID 2776 wrote to memory of 1712	2776	NotepadUpdate.exe	47
PID 2776 wrote to memory of 1712	2776	NotepadUpdate.exe	47
PID 2776 wrote to memory of 1712	2776	NotepadUpdate.exe	47

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2220
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\efQsxHSLtNUjTi.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2820
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\efQsxHSLtNUjTi" /XML "C:\Users\Admin\AppData\Local\Temp\tmp60B6.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2884
- C:\Users\Admin\AppData\Local\Temp\file.exe
  "C:\Users\Admin\AppData\Local\Temp\file.exe"
  2⤵
  PID:2600
- C:\Users\Admin\AppData\Local\Temp\file.exe
  "C:\Users\Admin\AppData\Local\Temp\file.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2848
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "NotepadUpdate" /tr '"C:\Users\Admin\AppData\Roaming\NotepadUpdate.exe"' & exit
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:916
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /create /f /sc onlogon /rl highest /tn "NotepadUpdate" /tr '"C:\Users\Admin\AppData\Roaming\NotepadUpdate.exe"'
      4⤵
      System Location Discovery: System Language Discovery
      Scheduled Task/Job: Scheduled Task
      PID:2784
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp8C58.tmp.bat""
    3⤵
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2916
  - - C:\Windows\SysWOW64\timeout.exe
      timeout 3
      4⤵
      System Location Discovery: System Language Discovery
      Delays execution with timeout.exe
      PID:2740
  - - C:\Users\Admin\AppData\Roaming\NotepadUpdate.exe
      "C:\Users\Admin\AppData\Roaming\NotepadUpdate.exe"
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:2776
    - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\efQsxHSLtNUjTi.exe"
        5⤵
        Command and Scripting Interpreter: PowerShell
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:2432
    - - C:\Windows\SysWOW64\schtasks.exe
        
        "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\efQsxHSLtNUjTi" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD77B.tmp"
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:2340
    - - C:\Users\Admin\AppData\Roaming\NotepadUpdate.exe
        
        "C:\Users\Admin\AppData\Roaming\NotepadUpdate.exe"
        5⤵
        Executes dropped EXE
        
        PID:1712
    - - C:\Users\Admin\AppData\Roaming\NotepadUpdate.exe
        
        "C:\Users\Admin\AppData\Roaming\NotepadUpdate.exe"
        5⤵
        Executes dropped EXE
        
        PID:1764
    - - C:\Users\Admin\AppData\Roaming\NotepadUpdate.exe
        
        "C:\Users\Admin\AppData\Roaming\NotepadUpdate.exe"
        5⤵
        Executes dropped EXE
        Loads dropped DLL
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of SetWindowsHookEx
        
        PID:2116

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp60B6.tmp

Filesize
1KB

MD5
fbd87c5033970795c942e5e26de59b9e

SHA1
34a49c5443b4f91666e7c621a6dc94469b9358e4

SHA256
ea90272c556370f731cdc7b61452188f4a83a2cd50cebfcb5e1b7113afbe4022

SHA512
5365bae5114e3910a85e1fa6373ab1738d292597ba2da760342a939be9b4f5f8ab6ef518b1ea86b09892cf29320f0735a4f5945c89233df517bcc7a4834e3953

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp8C58.tmp.bat

Filesize
157B

MD5
f958bf5854dba6a12932c2f4ebddb42c

SHA1
2f87dfa49d2462b662fd7ebd340f1f7262c67f27

SHA256
87cb32dd0ebc96afd064a2b4e8498765ad45983cc74e9e71d7cd0ef0537f2ba9

SHA512
b809c82e404b7a472b19bed0e0bd718923f1391826d81dfd5fccdb485c8e52c731642a00afe3f54cd5475e40861b246a332b64c224cd1fae8f1707574c37d828

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

Filesize
7KB

MD5
8cb63e2fd3244464b050027d4508cd53

SHA1
a2088d10f9bb9f5f66bf1b9fd298272b15b60613

SHA256
ca045cca21639950cf2af80f234cf4c2d726dca5a9783b1bba80f2c34af409ea

SHA512
14bf64e32de0120ef2ac6abbcf9ca8d1a7794cce8d3aabc78132c69d4f96fa82a508631287cf98835b7c3339c0f9710dea644f48786e5cbcd467532f0d9e0b7a

Download Submit
C:\Users\Admin\AppData\Roaming\MyData\DataLogs.conf

Filesize
8B

MD5
cf759e4c5f14fe3eec41b87ed756cea8

SHA1
c27c796bb3c2fac929359563676f4ba1ffada1f5

SHA256
c9f9f193409217f73cc976ad078c6f8bf65d3aabcf5fad3e5a47536d47aa6761

SHA512
c7f832aee13a5eb36d145f35d4464374a9e12fa2017f3c2257442d67483b35a55eccae7f7729243350125b37033e075efbc2303839fd86b81b9b4dca3626953b

Download Submit
\Users\Admin\AppData\Roaming\NotepadUpdate.exe

Filesize
551KB

MD5
acb979b81c2acf8de8925ac44a607e48

SHA1
9be1e0bb48c9343c22f292089e4931f0ce739421

SHA256
4fe449d036c64073e840b18ba90368b895159740ee8596476e42125477a70ed7

SHA512
41b4e517540a5b2f225f967424c2d009cc85bb6d77398507770b1b474a4ebfd2361f695f380f6c9291cf627e693ba057b4a05c55b52f5c7e5780d37af4c15a01

Download Submit
memory/2116-63-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2116-66-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/2116-67-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/2220-6-0x0000000004CB0000-0x0000000004D0E000-memory.dmp

Filesize
376KB

Download
memory/2220-0-0x000000007495E000-0x000000007495F000-memory.dmp

Filesize
4KB

Download
memory/2220-1-0x0000000000170000-0x00000000001FC000-memory.dmp

Filesize
560KB

Download
memory/2220-2-0x0000000074950000-0x000000007503E000-memory.dmp

Filesize
6.9MB

Download
memory/2220-3-0x0000000000520000-0x0000000000538000-memory.dmp

Filesize
96KB

Download
memory/2220-4-0x000000007495E000-0x000000007495F000-memory.dmp

Filesize
4KB

Download
memory/2220-5-0x0000000074950000-0x000000007503E000-memory.dmp

Filesize
6.9MB

Download
memory/2220-26-0x0000000074950000-0x000000007503E000-memory.dmp

Filesize
6.9MB

Download
memory/2776-43-0x0000000000C90000-0x0000000000D1C000-memory.dmp

Filesize
560KB

Download
memory/2848-16-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/2848-23-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/2848-12-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/2848-14-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/2848-22-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/2848-18-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/2848-20-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2848-21-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download