asyncrat | 52a610b0ad89165f4a65a504f9cdd2ecdf8310d96088529fed72463a54fcd6c8

Analysis

max time kernel
148s
max time network
148s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
09-12-2024 16:17

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General

Target

file.exe
Size

785KB
MD5

854ca372c90e86bd9a9dce642d7c1a88
SHA1

11c86768112cfb75a3a9b0b8ef36997e80fedcdf
SHA256

52a610b0ad89165f4a65a504f9cdd2ecdf8310d96088529fed72463a54fcd6c8
SHA512

8e84e56178ecde6b20e3c605e146b001e5a1f4afe3101f299d18278f666ef4f478c68d3ec0dbe48e95960fb23ab970c1be6534627fe2029137b30f9d1f6dee43
SSDEEP

12288:x1M0EGmwx0mUkw1tnPxv8opsdH0dwDIqkR:xuymwZ3UtPxvnps8wY

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
2760	powershell.exe
1920	powershell.exe

Executes dropped EXE 3 IoCs

pid	Process
2960	NotepadUpdate.exe
1324	NotepadUpdate.exe
2984	NotepadUpdate.exe

Loads dropped DLL 3 IoCs

pid	Process
1592	cmd.exe
2960	NotepadUpdate.exe
2960	NotepadUpdate.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2384 set thread context of 2820	2384	file.exe	35
PID 2960 set thread context of 2984	2960	NotepadUpdate.exe	48

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

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1992	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
2860	schtasks.exe
1100	schtasks.exe
1184	schtasks.exe

Suspicious behavior: EnumeratesProcesses 29 IoCs

pid	Process
2760	powershell.exe
2820	file.exe
2820	file.exe
2820	file.exe
2960	NotepadUpdate.exe
2960	NotepadUpdate.exe
1920	powershell.exe
2984	NotepadUpdate.exe
2984	NotepadUpdate.exe
2984	NotepadUpdate.exe
2984	NotepadUpdate.exe
2984	NotepadUpdate.exe
2984	NotepadUpdate.exe
2984	NotepadUpdate.exe
2984	NotepadUpdate.exe
2984	NotepadUpdate.exe
2984	NotepadUpdate.exe
2984	NotepadUpdate.exe
2984	NotepadUpdate.exe
2984	NotepadUpdate.exe
2984	NotepadUpdate.exe
2984	NotepadUpdate.exe
2984	NotepadUpdate.exe
2984	NotepadUpdate.exe
2984	NotepadUpdate.exe
2984	NotepadUpdate.exe
2984	NotepadUpdate.exe
2984	NotepadUpdate.exe
2984	NotepadUpdate.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	2820	file.exe
Token: SeDebugPrivilege	2760	powershell.exe
Token: SeDebugPrivilege	2960	NotepadUpdate.exe
Token: SeDebugPrivilege	1920	powershell.exe
Token: SeDebugPrivilege	2984	NotepadUpdate.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2984	NotepadUpdate.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 2384 wrote to memory of 2760	2384	file.exe	31
PID 2384 wrote to memory of 2760	2384	file.exe	31
PID 2384 wrote to memory of 2760	2384	file.exe	31
PID 2384 wrote to memory of 2760	2384	file.exe	31
PID 2384 wrote to memory of 2860	2384	file.exe	33
PID 2384 wrote to memory of 2860	2384	file.exe	33
PID 2384 wrote to memory of 2860	2384	file.exe	33
PID 2384 wrote to memory of 2860	2384	file.exe	33
PID 2384 wrote to memory of 2820	2384	file.exe	35
PID 2384 wrote to memory of 2820	2384	file.exe	35
PID 2384 wrote to memory of 2820	2384	file.exe	35
PID 2384 wrote to memory of 2820	2384	file.exe	35
PID 2384 wrote to memory of 2820	2384	file.exe	35
PID 2384 wrote to memory of 2820	2384	file.exe	35
PID 2384 wrote to memory of 2820	2384	file.exe	35
PID 2384 wrote to memory of 2820	2384	file.exe	35
PID 2384 wrote to memory of 2820	2384	file.exe	35
PID 2820 wrote to memory of 2208	2820	file.exe	36
PID 2820 wrote to memory of 2208	2820	file.exe	36
PID 2820 wrote to memory of 2208	2820	file.exe	36
PID 2820 wrote to memory of 2208	2820	file.exe	36
PID 2820 wrote to memory of 1592	2820	file.exe	38
PID 2820 wrote to memory of 1592	2820	file.exe	38
PID 2820 wrote to memory of 1592	2820	file.exe	38
PID 2820 wrote to memory of 1592	2820	file.exe	38
PID 2208 wrote to memory of 1100	2208	cmd.exe	40
PID 2208 wrote to memory of 1100	2208	cmd.exe	40
PID 2208 wrote to memory of 1100	2208	cmd.exe	40
PID 2208 wrote to memory of 1100	2208	cmd.exe	40
PID 1592 wrote to memory of 1992	1592	cmd.exe	41
PID 1592 wrote to memory of 1992	1592	cmd.exe	41
PID 1592 wrote to memory of 1992	1592	cmd.exe	41
PID 1592 wrote to memory of 1992	1592	cmd.exe	41
PID 1592 wrote to memory of 2960	1592	cmd.exe	42
PID 1592 wrote to memory of 2960	1592	cmd.exe	42
PID 1592 wrote to memory of 2960	1592	cmd.exe	42
PID 1592 wrote to memory of 2960	1592	cmd.exe	42
PID 1592 wrote to memory of 2960	1592	cmd.exe	42
PID 1592 wrote to memory of 2960	1592	cmd.exe	42
PID 1592 wrote to memory of 2960	1592	cmd.exe	42
PID 2960 wrote to memory of 1920	2960	NotepadUpdate.exe	43
PID 2960 wrote to memory of 1920	2960	NotepadUpdate.exe	43
PID 2960 wrote to memory of 1920	2960	NotepadUpdate.exe	43
PID 2960 wrote to memory of 1920	2960	NotepadUpdate.exe	43
PID 2960 wrote to memory of 1184	2960	NotepadUpdate.exe	45
PID 2960 wrote to memory of 1184	2960	NotepadUpdate.exe	45
PID 2960 wrote to memory of 1184	2960	NotepadUpdate.exe	45
PID 2960 wrote to memory of 1184	2960	NotepadUpdate.exe	45
PID 2960 wrote to memory of 1324	2960	NotepadUpdate.exe	47
PID 2960 wrote to memory of 1324	2960	NotepadUpdate.exe	47
PID 2960 wrote to memory of 1324	2960	NotepadUpdate.exe	47
PID 2960 wrote to memory of 1324	2960	NotepadUpdate.exe	47
PID 2960 wrote to memory of 1324	2960	NotepadUpdate.exe	47
PID 2960 wrote to memory of 1324	2960	NotepadUpdate.exe	47
PID 2960 wrote to memory of 1324	2960	NotepadUpdate.exe	47
PID 2960 wrote to memory of 2984	2960	NotepadUpdate.exe	48
PID 2960 wrote to memory of 2984	2960	NotepadUpdate.exe	48
PID 2960 wrote to memory of 2984	2960	NotepadUpdate.exe	48
PID 2960 wrote to memory of 2984	2960	NotepadUpdate.exe	48
PID 2960 wrote to memory of 2984	2960	NotepadUpdate.exe	48
PID 2960 wrote to memory of 2984	2960	NotepadUpdate.exe	48
PID 2960 wrote to memory of 2984	2960	NotepadUpdate.exe	48
PID 2960 wrote to memory of 2984	2960	NotepadUpdate.exe	48
PID 2960 wrote to memory of 2984	2960	NotepadUpdate.exe	48

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 use of WriteProcessMemory
PID:2384
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\yRnixT.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2760
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\yRnixT" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF067.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2860
- 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:2820
- - 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:2208
  - - 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:1100
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp1B7C.tmp.bat""
    3⤵
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1592
  - - C:\Windows\SysWOW64\timeout.exe
      timeout 3
      4⤵
      System Location Discovery: System Language Discovery
      Delays execution with timeout.exe
      PID:1992
  - - 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:2960
    - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\yRnixT.exe"
        5⤵
        Command and Scripting Interpreter: PowerShell
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:1920
    - - C:\Windows\SysWOW64\schtasks.exe
        
        "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\yRnixT" /XML "C:\Users\Admin\AppData\Local\Temp\tmp66CE.tmp"
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:1184
    - - C:\Users\Admin\AppData\Roaming\NotepadUpdate.exe
        
        "C:\Users\Admin\AppData\Roaming\NotepadUpdate.exe"
        5⤵
        Executes dropped EXE
        
        PID:1324
    - - C:\Users\Admin\AppData\Roaming\NotepadUpdate.exe
        
        "C:\Users\Admin\AppData\Roaming\NotepadUpdate.exe"
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of SetWindowsHookEx
        
        PID:2984

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

Query Registry

T1012

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\Cab9436.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\TarA5E5.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp1B7C.tmp.bat

Filesize
157B

MD5
faad2ab79ddef3a2e6262a055ac6072e

SHA1
979ddacd5cf885c1d216bf425ea597d3ca2c4045

SHA256
2e308bf7c87e1818d6fb1eb07762525f16ee000791119b8b1cf468b4d0bf83df

SHA512
70b51b3c75c362bc3ad167c5d3ab116bc06cb0d38e17714817fb1486255e2ff91a51030bce9d4f4a253e27e0eff2975a93a33c75d36650c8328cf50719bd324f

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpF067.tmp

Filesize
1KB

MD5
3c61f08a46fecee4f6d2e481eae9739c

SHA1
fc6be6fc14367d5d838e2ffd1d4b8f9051c644ce

SHA256
437d53143c6e65b63633f9645ed607bf5349ba56123737b6926b948fd5b5d89d

SHA512
f83485ad1b43067a05c764c7e15ea3e04e7f3ead9bb214a4ae8cf7210de49444c45350c0d19e0fa246bc4daab1b2be6d97a8005df61a5de2e7e4f94a3d647df3

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\YQYGXPCGAXGAD4U3QRIF.temp

Filesize
7KB

MD5
088f3f838f0d6bdba1666f28c37c5b21

SHA1
36ced76f46a0fbd43d7170a0e9d1c3a2419f9632

SHA256
074286ac05eedd60b7f41d46a0b4c0230885929e8808bef30f33c500b0b51bfd

SHA512
e7890023fcad86fffd60abfd5dea167a02d90f8071756fac4693cbe68a7735e5f2f752f0d6cbed281f79794fb8fc19c6ca4a5071956da15cfb0fd58a3abacc5c

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

Filesize
8B

MD5
cf759e4c5f14fe3eec41b87ed756cea8

SHA1
c27c796bb3c2fac929359563676f4ba1ffada1f5

SHA256
c9f9f193409217f73cc976ad078c6f8bf65d3aabcf5fad3e5a47536d47aa6761

SHA512
c7f832aee13a5eb36d145f35d4464374a9e12fa2017f3c2257442d67483b35a55eccae7f7729243350125b37033e075efbc2303839fd86b81b9b4dca3626953b

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

Filesize
785KB

MD5
854ca372c90e86bd9a9dce642d7c1a88

SHA1
11c86768112cfb75a3a9b0b8ef36997e80fedcdf

SHA256
52a610b0ad89165f4a65a504f9cdd2ecdf8310d96088529fed72463a54fcd6c8

SHA512
8e84e56178ecde6b20e3c605e146b001e5a1f4afe3101f299d18278f666ef4f478c68d3ec0dbe48e95960fb23ab970c1be6534627fe2029137b30f9d1f6dee43

Download Submit
memory/2384-25-0x0000000074630000-0x0000000074D1E000-memory.dmp

Filesize
6.9MB

Download
memory/2384-3-0x0000000000920000-0x000000000093E000-memory.dmp

Filesize
120KB

Download
memory/2384-1-0x00000000011A0000-0x0000000001268000-memory.dmp

Filesize
800KB

Download
memory/2384-2-0x0000000074630000-0x0000000074D1E000-memory.dmp

Filesize
6.9MB

Download
memory/2384-4-0x0000000074630000-0x0000000074D1E000-memory.dmp

Filesize
6.9MB

Download
memory/2384-0-0x000000007463E000-0x000000007463F000-memory.dmp

Filesize
4KB

Download
memory/2384-5-0x0000000001030000-0x000000000108C000-memory.dmp

Filesize
368KB

Download
memory/2820-17-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/2820-15-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/2820-13-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/2820-20-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/2820-21-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2820-24-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/2820-22-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/2820-23-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/2960-39-0x00000000001A0000-0x0000000000268000-memory.dmp

Filesize
800KB

Download
memory/2984-63-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/2984-61-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/2984-58-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download