asyncrat | 52a610b0ad89165f4a65a504f9cdd2ecdf8310d96088529fed72463a54fcd6c8

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
09-12-2024 16:35

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General

Target

IAKIZ_file.exe
Size

785KB
MD5

854ca372c90e86bd9a9dce642d7c1a88
SHA1

11c86768112cfb75a3a9b0b8ef36997e80fedcdf
SHA256

52a610b0ad89165f4a65a504f9cdd2ecdf8310d96088529fed72463a54fcd6c8
SHA512

8e84e56178ecde6b20e3c605e146b001e5a1f4afe3101f299d18278f666ef4f478c68d3ec0dbe48e95960fb23ab970c1be6534627fe2029137b30f9d1f6dee43
SSDEEP

12288:x1M0EGmwx0mUkw1tnPxv8opsdH0dwDIqkR:xuymwZ3UtPxvnps8wY

Score

10^/10

asyncrat venomrat 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

VenomRAT 7 IoCs

Detects VenomRAT.

rat

resource	yara_rule
behavioral1/memory/2808-26-0x0000000000400000-0x0000000000418000-memory.dmp	VenomRAT
behavioral1/memory/2808-24-0x0000000000400000-0x0000000000418000-memory.dmp	VenomRAT
behavioral1/memory/2808-23-0x0000000000400000-0x0000000000418000-memory.dmp	VenomRAT
behavioral1/memory/2808-20-0x0000000000400000-0x0000000000418000-memory.dmp	VenomRAT
behavioral1/memory/2808-18-0x0000000000400000-0x0000000000418000-memory.dmp	VenomRAT
behavioral1/memory/1000-63-0x0000000000400000-0x0000000000418000-memory.dmp	VenomRAT
behavioral1/memory/1000-61-0x0000000000400000-0x0000000000418000-memory.dmp	VenomRAT

Venomrat family
venomrat

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
1996	powershell.exe
276	powershell.exe

Executes dropped EXE 2 IoCs

pid	Process
1256	NotepadUpdate.exe
1000	NotepadUpdate.exe

Loads dropped DLL 2 IoCs

pid	Process
2396	cmd.exe
1256	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 2500 set thread context of 2808	2500	IAKIZ_file.exe	35
PID 1256 set thread context of 1000	1256	NotepadUpdate.exe	47

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

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1844	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
1520	schtasks.exe
3024	schtasks.exe
1716	schtasks.exe

Suspicious behavior: EnumeratesProcesses 22 IoCs

pid	Process
1996	powershell.exe
2808	IAKIZ_file.exe
2808	IAKIZ_file.exe
2808	IAKIZ_file.exe
276	powershell.exe
1000	NotepadUpdate.exe
1000	NotepadUpdate.exe
1000	NotepadUpdate.exe
1000	NotepadUpdate.exe
1000	NotepadUpdate.exe
1000	NotepadUpdate.exe
1000	NotepadUpdate.exe
1000	NotepadUpdate.exe
1000	NotepadUpdate.exe
1000	NotepadUpdate.exe
1000	NotepadUpdate.exe
1000	NotepadUpdate.exe
1000	NotepadUpdate.exe
1000	NotepadUpdate.exe
1000	NotepadUpdate.exe
1000	NotepadUpdate.exe
1000	NotepadUpdate.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	2808	IAKIZ_file.exe
Token: SeDebugPrivilege	1996	powershell.exe
Token: SeDebugPrivilege	276	powershell.exe
Token: SeDebugPrivilege	1000	NotepadUpdate.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1000	NotepadUpdate.exe

Suspicious use of WriteProcessMemory 60 IoCs

description	pid	Process	procid_target
PID 2500 wrote to memory of 1996	2500	IAKIZ_file.exe	31
PID 2500 wrote to memory of 1996	2500	IAKIZ_file.exe	31
PID 2500 wrote to memory of 1996	2500	IAKIZ_file.exe	31
PID 2500 wrote to memory of 1996	2500	IAKIZ_file.exe	31
PID 2500 wrote to memory of 1520	2500	IAKIZ_file.exe	32
PID 2500 wrote to memory of 1520	2500	IAKIZ_file.exe	32
PID 2500 wrote to memory of 1520	2500	IAKIZ_file.exe	32
PID 2500 wrote to memory of 1520	2500	IAKIZ_file.exe	32
PID 2500 wrote to memory of 2808	2500	IAKIZ_file.exe	35
PID 2500 wrote to memory of 2808	2500	IAKIZ_file.exe	35
PID 2500 wrote to memory of 2808	2500	IAKIZ_file.exe	35
PID 2500 wrote to memory of 2808	2500	IAKIZ_file.exe	35
PID 2500 wrote to memory of 2808	2500	IAKIZ_file.exe	35
PID 2500 wrote to memory of 2808	2500	IAKIZ_file.exe	35
PID 2500 wrote to memory of 2808	2500	IAKIZ_file.exe	35
PID 2500 wrote to memory of 2808	2500	IAKIZ_file.exe	35
PID 2500 wrote to memory of 2808	2500	IAKIZ_file.exe	35
PID 2808 wrote to memory of 2580	2808	IAKIZ_file.exe	36
PID 2808 wrote to memory of 2580	2808	IAKIZ_file.exe	36
PID 2808 wrote to memory of 2580	2808	IAKIZ_file.exe	36
PID 2808 wrote to memory of 2580	2808	IAKIZ_file.exe	36
PID 2808 wrote to memory of 2396	2808	IAKIZ_file.exe	38
PID 2808 wrote to memory of 2396	2808	IAKIZ_file.exe	38
PID 2808 wrote to memory of 2396	2808	IAKIZ_file.exe	38
PID 2808 wrote to memory of 2396	2808	IAKIZ_file.exe	38
PID 2580 wrote to memory of 3024	2580	cmd.exe	40
PID 2580 wrote to memory of 3024	2580	cmd.exe	40
PID 2580 wrote to memory of 3024	2580	cmd.exe	40
PID 2580 wrote to memory of 3024	2580	cmd.exe	40
PID 2396 wrote to memory of 1844	2396	cmd.exe	41
PID 2396 wrote to memory of 1844	2396	cmd.exe	41
PID 2396 wrote to memory of 1844	2396	cmd.exe	41
PID 2396 wrote to memory of 1844	2396	cmd.exe	41
PID 2396 wrote to memory of 1256	2396	cmd.exe	42
PID 2396 wrote to memory of 1256	2396	cmd.exe	42
PID 2396 wrote to memory of 1256	2396	cmd.exe	42
PID 2396 wrote to memory of 1256	2396	cmd.exe	42
PID 2396 wrote to memory of 1256	2396	cmd.exe	42
PID 2396 wrote to memory of 1256	2396	cmd.exe	42
PID 2396 wrote to memory of 1256	2396	cmd.exe	42
PID 1256 wrote to memory of 276	1256	NotepadUpdate.exe	43
PID 1256 wrote to memory of 276	1256	NotepadUpdate.exe	43
PID 1256 wrote to memory of 276	1256	NotepadUpdate.exe	43
PID 1256 wrote to memory of 276	1256	NotepadUpdate.exe	43
PID 1256 wrote to memory of 1716	1256	NotepadUpdate.exe	45
PID 1256 wrote to memory of 1716	1256	NotepadUpdate.exe	45
PID 1256 wrote to memory of 1716	1256	NotepadUpdate.exe	45
PID 1256 wrote to memory of 1716	1256	NotepadUpdate.exe	45
PID 1256 wrote to memory of 1000	1256	NotepadUpdate.exe	47
PID 1256 wrote to memory of 1000	1256	NotepadUpdate.exe	47
PID 1256 wrote to memory of 1000	1256	NotepadUpdate.exe	47
PID 1256 wrote to memory of 1000	1256	NotepadUpdate.exe	47
PID 1256 wrote to memory of 1000	1256	NotepadUpdate.exe	47
PID 1256 wrote to memory of 1000	1256	NotepadUpdate.exe	47
PID 1256 wrote to memory of 1000	1256	NotepadUpdate.exe	47
PID 1256 wrote to memory of 1000	1256	NotepadUpdate.exe	47
PID 1256 wrote to memory of 1000	1256	NotepadUpdate.exe	47
PID 1256 wrote to memory of 1000	1256	NotepadUpdate.exe	47
PID 1256 wrote to memory of 1000	1256	NotepadUpdate.exe	47
PID 1256 wrote to memory of 1000	1256	NotepadUpdate.exe	47

C:\Users\Admin\AppData\Local\Temp\IAKIZ_file.exe
"C:\Users\Admin\AppData\Local\Temp\IAKIZ_file.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2500
- 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:1996
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\yRnixT" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF509.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:1520
- C:\Users\Admin\AppData\Local\Temp\IAKIZ_file.exe
  "C:\Users\Admin\AppData\Local\Temp\IAKIZ_file.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2808
- - 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:2580
  - - 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:3024
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp203D.tmp.bat""
    3⤵
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2396
  - - C:\Windows\SysWOW64\timeout.exe
      timeout 3
      4⤵
      System Location Discovery: System Language Discovery
      Delays execution with timeout.exe
      PID:1844
  - - 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 use of WriteProcessMemory
      PID:1256
    - - 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:276
    - - C:\Windows\SysWOW64\schtasks.exe
        
        "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\yRnixT" /XML "C:\Users\Admin\AppData\Local\Temp\tmp6835.tmp"
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:1716
    - - 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:1000

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\Cab94A3.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\TarA652.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp203D.tmp.bat

Filesize
157B

MD5
492914f982592ba0dc9e543afdd6ce41

SHA1
17338910419c103b355db214c45c471e98706276

SHA256
efff23ca16a702fb39f6d8f0d0f053be364f9c2be20080d98d7888284e6673d5

SHA512
f2016ad5738900e17a137652e8bda594d806eb8d3bed8702004075640e14c5316305802b0686537682b6b65bf1a38052210b216f2d34425abbba308fbd46174c

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpF509.tmp

Filesize
1KB

MD5
7fccfa84941c23aec307990a3fa7b8c8

SHA1
5b2a474627e58dd879b1b73c5ff628571a2ae3b2

SHA256
8ad7bbfffbdbedf77b8c7bb3702e9061b761b6be51530161e3758480cd0b9b3f

SHA512
72cdc7472b2940c0c7cc7edb1f49a6baab416cde71a9d248ec9b2839fb6ba7490f0fdf06bf1302e8bff5f7fb8226c8d4d41df3e4064923b73c14c7905cf9127b

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

Filesize
7KB

MD5
2aadfb738665dc827544395dbddbc40f

SHA1
c8d8a7a0783cd37207ee5d43de76fbed0bb2b2b5

SHA256
8b767005b5b11d9272f24f1ef772647972b345f39d20e182aad8cb637d597cb4

SHA512
5c61906bdbf32f90852f758ad972a8e63beefcf9ab4574341d40c041d8ff6e3ca8ce2e175b1bbe50f61057e043cded76f87465787986559295dc36c2152ab77f

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/1000-58-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1000-61-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/1000-63-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/1256-41-0x0000000001370000-0x0000000001438000-memory.dmp

Filesize
800KB

Download
memory/2500-6-0x0000000004E70000-0x0000000004ECC000-memory.dmp

Filesize
368KB

Download
memory/2500-0-0x00000000745EE000-0x00000000745EF000-memory.dmp

Filesize
4KB

Download
memory/2500-1-0x0000000001150000-0x0000000001218000-memory.dmp

Filesize
800KB

Download
memory/2500-2-0x00000000745E0000-0x0000000074CCE000-memory.dmp

Filesize
6.9MB

Download
memory/2500-3-0x0000000000350000-0x000000000036E000-memory.dmp

Filesize
120KB

Download
memory/2500-28-0x00000000745E0000-0x0000000074CCE000-memory.dmp

Filesize
6.9MB

Download
memory/2500-4-0x00000000745EE000-0x00000000745EF000-memory.dmp

Filesize
4KB

Download
memory/2500-5-0x00000000745E0000-0x0000000074CCE000-memory.dmp

Filesize
6.9MB

Download
memory/2808-14-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/2808-26-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/2808-24-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/2808-23-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/2808-22-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2808-20-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/2808-16-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/2808-18-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download